/*
Theme Name: Kiến Trúc Studio
Theme URI: https://kientrucstudio.com
Author: KTS Development
Author URI: https://kientrucstudio.com
Description: Premium WordPress Block Theme cho công ty xây dựng & kiến trúc. Thiết kế Editorial hiện đại với Playfair Display Vietnamese font, Split Text Animation, Masonry Portfolio, Custom Cursor, và Lenis Smooth Scrolling.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: kien-truc-studio
Tags: block-themes, full-site-editing, construction, architecture, portfolio
*/

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */

:root {
  /* Colors */
  --kts-white: #FFFFFF;
  --kts-off-white: #F8F8F6;
  --kts-light-gray: #E8E8E8;
  --kts-mid-gray: #888888;
  --kts-dark-gray: #333333;
  --kts-black: #1A1A1A;
  --kts-accent: #E63946;

  /* Typography */
  --kts-font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --kts-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --kts-space-xs: 0.5rem;
  --kts-space-sm: 1rem;
  --kts-space-md: 1.5rem;
  --kts-space-lg: 2rem;
  --kts-space-xl: 2.5rem;
  --kts-space-2xl: 3rem;
  --kts-space-3xl: 3.5rem;
  --kts-space-4xl: 5rem;

  /* Layout */
  --kts-content-width: 1200px;
  --kts-wide-width: 1440px;

  /* Transitions */
  --kts-ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --kts-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --kts-duration: 0.6s;
  --kts-duration-fast: 0.3s;

  /* Custom Cursor */
  --kts-cursor-size: 12px;
  --kts-cursor-follower-size: 40px;
}

/* ==========================================================================
   CSS RESET & BASE
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: auto;
  /* Lenis handles smooth scroll */
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: hidden;
}

html.lenis,
html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

body {
  font-family: var(--kts-font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--kts-black);
  background-color: var(--kts-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--kts-duration-fast) var(--kts-ease);
}

a:hover {
  color: var(--kts-accent);
}

ul,
ol {
  list-style: none;
}

/* ==========================================================================
   CUSTOM CURSOR
   ========================================================================== */

.kts-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--kts-cursor-size);
  height: var(--kts-cursor-size);
  background: var(--kts-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: width 0.3s var(--kts-ease-out),
    height 0.3s var(--kts-ease-out),
    background 0.3s var(--kts-ease-out),
    opacity 0.3s var(--kts-ease-out);
  mix-blend-mode: difference;
  will-change: transform;
}

.kts-cursor-follower {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--kts-cursor-follower-size);
  height: var(--kts-cursor-follower-size);
  border: 1px solid var(--kts-accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99998;
  transform: translate(-50%, -50%);
  transition: width 0.4s var(--kts-ease-out),
    height 0.4s var(--kts-ease-out),
    border-color 0.4s var(--kts-ease-out),
    opacity 0.4s var(--kts-ease-out);
  will-change: transform;
}

.kts-cursor.is-hover {
  width: 50px;
  height: 50px;
  background: rgba(230, 57, 70, 0.15);
}

.kts-cursor-follower.is-hover {
  width: 60px;
  height: 60px;
  border-color: var(--kts-accent);
}

.kts-cursor.is-hidden,
.kts-cursor-follower.is-hidden {
  opacity: 0;
}

/* Hide on touch devices */
@media (pointer: coarse) {

  .kts-cursor,
  .kts-cursor-follower {
    display: none !important;
  }
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

.arc-container {
  width: 100%;
  max-width: var(--kts-content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--kts-space-lg);
  padding-right: var(--kts-space-lg);
}

.arc-container--wide {
  max-width: var(--kts-wide-width);
}

.arc-full-width {
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}

.arc-section {
  padding-top: var(--kts-space-4xl);
  padding-bottom: var(--kts-space-4xl);
}

.arc-section--compact {
  padding-top: var(--kts-space-3xl);
  padding-bottom: var(--kts-space-3xl);
}

.arc-grid {
  display: grid;
  gap: var(--kts-space-lg);
}

.arc-grid-2 {
  grid-template-columns: 1fr 1fr;
}

.arc-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.arc-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.arc-grid-asymmetric {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--kts-space-lg);
}

.arc-grid-asymmetric--reverse {
  grid-template-columns: 1fr 1.5fr;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

.arc-hero-title {
  font-family: var(--kts-font-heading);
  font-size: clamp(3rem, 7vw, 7rem);
  line-height: 1.0;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--kts-black);
}

.arc-section-title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.arc-subtitle {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.2;
  font-weight: 400;
}

.arc-label {
  font-family: var(--kts-font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--kts-mid-gray);
}

.arc-body {
  font-family: var(--kts-font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--kts-dark-gray);
}

.arc-body--large {
  font-size: 1.125rem;
  line-height: 1.8;
}

.arc-number {
  font-family: var(--kts-font-heading);
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: 1;
  color: var(--kts-accent);
}

.arc-accent-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--kts-accent);
  border-radius: 50%;
}

.arc-accent-dot--pulse {
  animation: kts-pulse 2s ease-in-out infinite;
}

@keyframes kts-pulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }

  50% {
    transform: scale(1.5);
    opacity: 0.6;
  }
}

/* ==========================================================================
   HEADER — 3-Column Grid Layout
   ========================================================================== */

.kts-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  padding: 0 2.5rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  background: var(--kts-white);
  border-bottom: 1px solid var(--kts-light-gray);
  transition: background 0.35s var(--kts-ease),
    box-shadow 0.35s var(--kts-ease),
    height 0.35s var(--kts-ease);
}

.kts-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  height: 64px;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

/* --- Brand column (Left) --- */
.kts-header__brand {
  display: flex;
  align-items: center;
}

.kts-header__logo {
  display: flex;
  align-items: baseline;
  gap: 0.35em;
  text-decoration: none;
  white-space: nowrap;
}

.kts-header__logo-text {
  font-family: var(--kts-font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--kts-black);
  line-height: 1;
  letter-spacing: -0.02em;
}

.kts-header__logo-sub {
  font-family: var(--kts-font-heading);
  font-size: 1.75rem;
  font-weight: 400;
  font-style: italic;
  color: var(--kts-accent);
  line-height: 1;
}

/* --- Navigation (Center column) --- */
.kts-header__nav {
  display: flex;
  align-items: stretch;
  height: 100%;
}

.kts-header__nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  padding: 0 1.1rem;
  font-family: var(--kts-font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--kts-black);
  letter-spacing: 0.01em;
  text-decoration: none;
  position: relative;
  transition: color 0.25s var(--kts-ease);
  white-space: nowrap;
}

.kts-header__nav-item+.kts-header__nav-item {
  border-left: 1px solid rgba(0, 0, 0, 0.07);
}

.kts-header__nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--kts-accent);
  transition: width 0.3s var(--kts-ease);
}

.kts-header__nav-item:hover {
  color: var(--kts-accent);
}

.kts-header__nav-item:hover::after {
  width: 60%;
}

.kts-header__nav-number {
  font-family: var(--kts-font-body);
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--kts-accent);
  letter-spacing: 0.1em;
  line-height: 1;
}

.kts-header__nav-label {
  line-height: 1;
  font-size: 1rem;
}

/* --- Dropdown with sub-services --- */
.kts-header__nav-item--has-dropdown {
  position: relative;
}

.kts-header__nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  padding: 0 1.1rem;
  font-family: var(--kts-font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--kts-black);
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  height: 100%;
  transition: color 0.25s var(--kts-ease);
}

.kts-header__nav-link:hover {
  color: var(--kts-accent);
}

.kts-header__nav-chevron {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  transition: transform 0.25s var(--kts-ease);
  opacity: 0.5;
}

.kts-header__nav-item--has-dropdown:hover .kts-header__nav-chevron {
  transform: translateY(-50%) rotate(180deg);
  opacity: 1;
}

.kts-header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 200px;
  background: var(--kts-white);
  border: 1px solid var(--kts-light-gray);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s var(--kts-ease), transform 0.25s var(--kts-ease), visibility 0.25s;
  z-index: 100;
  padding: 0.5rem 0;
}

.kts-header__nav-item--has-dropdown:hover .kts-header__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.kts-header__dropdown-item {
  display: block;
  padding: 0.6rem 1.25rem;
  font-family: var(--kts-font-body);
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--kts-dark-gray);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}

.kts-header__dropdown-item:hover {
  background: var(--kts-off-white);
  color: var(--kts-accent);
}


/* --- Right column (CTA + Hamburger) --- */
.kts-header__right {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: flex-end;
}

.kts-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.375rem;
  background: var(--kts-black);
  color: var(--kts-white);
  font-family: var(--kts-font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  border: 2px solid var(--kts-black);
  transition: background 0.25s var(--kts-ease), color 0.25s var(--kts-ease);
}

.kts-header__cta:hover {
  background: transparent;
  color: var(--kts-black);
}

/* --- Hamburger (mobile only) --- */
.kts-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  width: 44px;
  height: 44px;
  padding: 10px;
  cursor: pointer;
  background: none;
  border: none;
  gap: 5px;
  flex-shrink: 0;
}

.kts-hamburger__line {
  display: block;
  height: 1.5px;
  background: var(--kts-black);
  border-radius: 1px;
  transition: width 0.3s var(--kts-ease),
    transform 0.3s var(--kts-ease),
    opacity 0.3s var(--kts-ease);
}

.kts-hamburger__line:nth-child(1) {
  width: 24px;
}

.kts-hamburger__line:nth-child(2) {
  width: 16px;
}

.kts-hamburger.is-open .kts-hamburger__line:nth-child(1) {
  width: 22px;
  transform: translateY(3.25px) rotate(45deg);
}

.kts-hamburger.is-open .kts-hamburger__line:nth-child(2) {
  width: 22px;
  transform: translateY(-3.25px) rotate(-45deg);
}

/* ==========================================================================
   MOBILE MENU
   ========================================================================== */

.kts-mobile-menu__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 1099;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--kts-ease);
}

.kts-mobile-menu__overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.kts-mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(85vw, 420px);
  height: 100dvh;
  background: var(--kts-white);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  transition: right 0.5s var(--kts-ease-out);
  overflow: hidden;
}

.kts-mobile-menu.is-open {
  right: 0;
}

.kts-mobile-menu__close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--kts-light-gray);
  cursor: pointer;
  color: var(--kts-black);
  transition: background 0.2s, border-color 0.2s, color 0.2s;
  border-radius: 2px;
}

.kts-mobile-menu__close:hover {
  background: var(--kts-black);
  border-color: var(--kts-black);
  color: var(--kts-white);
}

.kts-mobile-menu__inner {
  flex: 1;
  padding: 5rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.kts-mobile-menu__item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--kts-light-gray);
  text-decoration: none;
  color: var(--kts-black);
  transition: color 0.2s var(--kts-ease);
}

.kts-mobile-menu__item:hover {
  color: var(--kts-accent);
}

.kts-mobile-menu__num {
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--kts-accent);
  flex-shrink: 0;
}

.kts-mobile-menu__name {
  font-family: var(--kts-font-heading);
  font-size: 1.625rem;
  font-weight: 400;
  flex: 1;
  line-height: 1;
}

.kts-mobile-menu__arrow {
  flex-shrink: 0;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.2s, transform 0.2s;
  color: var(--kts-accent);
}

.kts-mobile-menu__item:hover .kts-mobile-menu__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* --- Mobile Menu: Service Sub-Menu Accordion --- */
.kts-mobile-menu__group {
  border-bottom: 1px solid var(--kts-light-gray);
}

.kts-mobile-menu__item--toggle {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  border-bottom: none;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  color: var(--kts-black);
}

.kts-mobile-menu__chevron {
  flex-shrink: 0;
  opacity: 0.4;
  transition: transform 0.3s var(--kts-ease), opacity 0.2s;
}

.kts-mobile-menu__item--toggle[aria-expanded="true"] .kts-mobile-menu__chevron {
  transform: rotate(180deg);
  opacity: 1;
}

.kts-mobile-menu__sub {
  display: none;
  flex-direction: column;
  padding: 0 0 0.75rem 2.5rem;
}

.kts-mobile-menu__sub[aria-hidden="false"] {
  display: flex;
}

.kts-mobile-menu__sub-item {
  display: block;
  padding: 0.5rem 0;
  font-family: var(--kts-font-body);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--kts-dark-gray);
  text-decoration: none;
  transition: color 0.2s;
}

.kts-mobile-menu__sub-item:hover {
  color: var(--kts-accent);
}


.kts-mobile-menu__footer {
  padding: 1.25rem 2rem;
  border-top: 1px solid var(--kts-light-gray);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.kts-mobile-menu__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.625rem 1.25rem;
  background: var(--kts-accent);
  color: var(--kts-white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.2s;
}

.kts-mobile-menu__cta:hover {
  background: var(--kts-black);
  color: var(--kts-white);
}

.kts-mobile-menu__socials {
  display: flex;
  gap: 1.25rem;
}

.kts-mobile-menu__socials a {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--kts-mid-gray);
  text-decoration: none;
  transition: color 0.2s;
}

.kts-mobile-menu__socials a:hover {
  color: var(--kts-black);
}

/* ==========================================================================
   SOCIAL SIDEBAR
   ========================================================================== */

.kts-social-sidebar {
  position: fixed;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.kts-social-sidebar__link {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--kts-mid-gray);
  text-decoration: none;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  transition: color 0.2s var(--kts-ease);
  padding: 0.2rem 0;
}

.kts-social-sidebar__link:hover {
  color: var(--kts-accent);
}

.kts-social-sidebar__divider {
  display: block;
  width: 1px;
  height: 2rem;
  background: var(--kts-light-gray);
  margin: 0.15rem 0;
}

.kts-social-sidebar__label {
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--kts-mid-gray);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.arc-hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  overflow: hidden;
}

.arc-hero__media {
  position: relative;
  overflow: hidden;
}

.arc-hero__slider {
  position: relative;
  width: 100%;
  height: 100%;
}

.arc-hero__slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s var(--kts-ease);
}

.arc-hero__slide.is-active {
  opacity: 1;
}

.arc-hero__slide img,
.arc-hero__slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.arc-hero__slide-number {
  position: absolute;
  top: var(--kts-space-xl);
  left: var(--kts-space-xl);
  font-family: var(--kts-font-heading);
  font-size: clamp(8rem, 15vw, 15rem);
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
  pointer-events: none;
}

.arc-hero__play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: var(--kts-space-sm);
  color: var(--kts-white);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 10;
  cursor: pointer;
  background: none;
  border: none;
}

.arc-hero__play-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--kts-black);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--kts-duration-fast) var(--kts-ease);
}

.arc-hero__play-icon:hover {
  transform: scale(1.1);
}

.arc-hero__play-icon svg {
  width: 18px;
  height: 18px;
  fill: var(--kts-white);
  margin-left: 3px;
}

.arc-hero__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--kts-space-4xl) var(--kts-space-3xl);
  position: relative;
}

.arc-hero__info-box {
  position: absolute;
  top: var(--kts-space-xl);
  right: var(--kts-space-xl);
  background: var(--kts-off-white);
  padding: var(--kts-space-sm) var(--kts-space-md);
  font-size: 0.8125rem;
}

.arc-hero__info-box span {
  display: block;
  color: var(--kts-dark-gray);
}

.arc-hero__label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--kts-mid-gray);
  margin-bottom: var(--kts-space-md);
}

.arc-hero__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(3rem, 6vw, 6rem);
  line-height: 1.05;
  font-weight: 400;
  color: var(--kts-black);
  margin-bottom: var(--kts-space-lg);
}

/* Split text chars */
.arc-hero__title .split-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.5s var(--kts-ease-out),
    transform 0.5s var(--kts-ease-out);
}

.arc-hero__title.is-visible .split-char {
  opacity: 1;
  transform: translateY(0);
}

.arc-hero__about {
  max-width: 360px;
}

.arc-hero__about-label {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--kts-space-xs);
}

.arc-hero__about-text {
  font-size: 0.875rem;
  color: var(--kts-dark-gray);
  line-height: 1.6;
}

/* Slider Navigation */
.arc-hero__nav {
  position: absolute;
  bottom: var(--kts-space-xl);
  right: var(--kts-space-3xl);
  display: flex;
  align-items: center;
  gap: var(--kts-space-lg);
  z-index: 5;
}

.arc-hero__nav-list {
  display: flex;
  gap: var(--kts-space-md);
}

.arc-hero__nav-item {
  font-family: var(--kts-font-heading);
  font-size: 0.875rem;
  color: var(--kts-mid-gray);
  cursor: pointer;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--kts-duration-fast) var(--kts-ease);
}

.arc-hero__nav-item.is-active {
  color: var(--kts-black);
}

.arc-hero__nav-item.is-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--kts-black);
}

.arc-hero__arrows {
  display: flex;
  gap: var(--kts-space-sm);
}

.arc-hero__arrow {
  width: 40px;
  height: 40px;
  border: 1px solid var(--kts-light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: none;
  transition: border-color var(--kts-duration-fast) var(--kts-ease),
    background var(--kts-duration-fast) var(--kts-ease);
}

.arc-hero__arrow:hover {
  border-color: var(--kts-black);
  background: var(--kts-black);
}

.arc-hero__arrow:hover svg {
  stroke: var(--kts-white);
}

.arc-hero__arrow svg {
  width: 16px;
  height: 16px;
  stroke: var(--kts-black);
  fill: none;
  stroke-width: 2;
}

/* ==========================================================================
   ABOUT / INTRO SECTION
   ========================================================================== */

.arc-about {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-xl);
  align-items: start;
  padding: var(--kts-space-xl) 0;
}

.arc-about__content {
  padding-right: var(--kts-space-xl);
}

.arc-about__heading {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  line-height: 1.3;
  margin-bottom: var(--kts-space-lg);
}

.arc-about__heading em {
  font-style: italic;
  color: var(--kts-accent);
}

.arc-about__text {
  font-size: 0.9375rem;
  color: var(--kts-dark-gray);
  line-height: 1.8;
}

.arc-about__visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-md);
  position: relative;
}

.arc-about__image {
  overflow: hidden;
}

.arc-about__image img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform var(--kts-duration) var(--kts-ease);
}

.arc-about__image:hover img {
  transform: scale(1.03);
}

.arc-about__image--offset {
  margin-top: var(--kts-space-xl);
}

.arc-about__stats {
  position: absolute;
  bottom: var(--kts-space-md);
  right: 0;
  display: flex;
  gap: var(--kts-space-md);
}

/* ==========================================================================
   ABOUT SECTION — DYNAMIC STACKED VARIANT
   ========================================================================== */

.arc-about--dynamic .arc-about__content {
  padding-right: var(--kts-space-3xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* CTA link */
.arc-about__cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: var(--kts-space-lg);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kts-accent);
  text-decoration: none;
  transition: gap 0.3s var(--kts-ease);
}

.arc-about__cta-link:hover {
  gap: 1rem;
}

.arc-about__cta-link svg {
  transition: transform 0.3s var(--kts-ease);
}

.arc-about__cta-link:hover svg {
  transform: translateX(4px);
}

/* Stacked visual container */
.arc-about__visual--stacked {
  display: block;
  position: relative;
  height: 480px;
  min-height: 420px;
}

/* Primary image — large, back layer */
.arc-about__image--primary {
  position: absolute;
  top: 0;
  right: 0;
  width: 72%;
  height: 360px;
  overflow: hidden;
  border-radius: 4px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.15),
    0 8px 24px rgba(0, 0, 0, 0.08);
  z-index: 1;
}

.arc-about__image--primary img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--kts-ease-out);
}

.arc-about__image--primary:hover img {
  transform: scale(1.05);
}

/* Gradient overlay on primary image */
.arc-about__image-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
  pointer-events: none;
  z-index: 2;
}

/* Secondary image — overlapping, shifted left */
.arc-about__image--secondary {
  position: absolute;
  bottom: 60px;
  left: 0;
  width: 48%;
  height: 260px;
  overflow: hidden;
  border-radius: 4px;
  box-shadow:
    0 24px 48px rgba(0, 0, 0, 0.2),
    0 12px 24px rgba(0, 0, 0, 0.1);
  z-index: 3;
  border: 3px solid var(--kts-white);
}

.arc-about__image--secondary img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s var(--kts-ease-out);
}

.arc-about__image--secondary:hover img {
  transform: scale(1.06);
}

/* Tertiary image — small accent, top-left  */
.arc-about__image--tertiary {
  position: absolute;
  top: 30px;
  left: -20px;
  width: 140px;
  height: 140px;
  overflow: hidden;
  border-radius: 4px;
  box-shadow:
    0 16px 40px rgba(0, 0, 0, 0.2),
    0 6px 16px rgba(0, 0, 0, 0.1);
  z-index: 4;
  border: 3px solid var(--kts-white);
  transition: transform 0.6s var(--kts-ease);
}

.arc-about__image--tertiary:hover {
  transform: translateY(-8px) rotate(-2deg);
}

.arc-about__image--tertiary img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Floating glassmorphism stat cards */
.arc-about__float-stats {
  position: absolute;
  bottom: 0;
  right: 10%;
  display: flex;
  gap: var(--kts-space-sm);
  z-index: 5;
}

.arc-about__float-stat {
  background: rgba(26, 26, 26, 0.92);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  padding: var(--kts-space-md) var(--kts-space-lg);
  text-align: center;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
  min-width: 120px;
  transition: transform 0.4s var(--kts-ease), box-shadow 0.4s var(--kts-ease);
}

.arc-about__float-stat:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5);
}

.arc-about__float-stat-number {
  font-family: var(--kts-font-heading);
  font-size: 2rem;
  font-weight: 400;
  color: #FFFFFF;
  line-height: 1;
  display: inline;
}

.arc-about__float-stat-plus {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  color: var(--kts-accent);
  display: inline;
  font-weight: 700;
}

.arc-about__float-stat-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 0.375rem;
}

/* Decorative line */
.arc-about__deco-line {
  position: absolute;
  top: 50%;
  right: -30px;
  width: 60px;
  height: 2px;
  background: var(--kts-accent);
  z-index: 1;
  animation: decoLineSlide 3s ease-in-out infinite alternate;
}

/* Decorative pulsing dot */
.arc-about__deco-dot {
  position: absolute;
  top: 15%;
  right: 10%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--kts-accent);
  z-index: 6;
  animation: decoDotPulse 2s ease-in-out infinite;
}

@keyframes decoLineSlide {
  0% {
    transform: translateX(0);
    opacity: 0.4;
  }

  100% {
    transform: translateX(20px);
    opacity: 1;
  }
}

@keyframes decoDotPulse {

  0%,
  100% {
    transform: scale(1);
    opacity: 0.6;
  }

  50% {
    transform: scale(1.4);
    opacity: 1;
  }
}

/* --- Dark mode adjustments for stacked about --- */
[data-theme="dark"] .arc-about__image--secondary {
  border-color: #222;
}

[data-theme="dark"] .arc-about__image--tertiary {
  border-color: #222;
}

[data-theme="dark"] .arc-about__float-stat {
  background: rgba(20, 20, 20, 0.9);
  border-color: rgba(255, 255, 255, 0.1);
}

.arc-stat {
  background: var(--kts-accent);
  color: var(--kts-white);
  padding: var(--kts-space-md) var(--kts-space-lg);
  text-align: center;
}

.arc-stat__number {
  font-family: var(--kts-font-heading);
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: 4px;
}

.arc-stat__label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.85;
}

/* ==========================================================================
   AWARDS SECTION
   ========================================================================== */

.arc-awards {
  padding: var(--kts-space-lg) 0;
  border-top: 1px solid var(--kts-light-gray);
  border-bottom: 1px solid var(--kts-light-gray);
}

.arc-awards__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--kts-space-xl);
}

.arc-awards__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 400;
}

.arc-awards__logos {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--kts-space-xl);
  flex-wrap: wrap;
}

.arc-awards__logo-item {
  font-family: var(--kts-font-body);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--kts-dark-gray);
  letter-spacing: -0.01em;
  opacity: 0.5;
  transition: opacity 0.3s;
}

.arc-awards__logo-item:hover {
  opacity: 1;
}

.arc-awards__logo {
  height: 30px;
  opacity: 0.4;
  transition: opacity var(--kts-duration-fast) var(--kts-ease);
  filter: grayscale(100%);
}

.arc-awards__logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

/* ==========================================================================
   SELECTED WORKS (MASONRY PORTFOLIO)
   ========================================================================== */

.arc-works {
  padding: var(--kts-space-xl) 0;
}

.arc-works__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--kts-space-lg);
}

.arc-works__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
}

.arc-works__title em {
  font-style: italic;
}

.arc-works__view-all {
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--kts-mid-gray);
  border-bottom: 1px solid var(--kts-mid-gray);
  padding-bottom: 2px;
  transition: color var(--kts-duration-fast) var(--kts-ease),
    border-color var(--kts-duration-fast) var(--kts-ease);
}

.arc-works__view-all:hover {
  color: var(--kts-accent);
  border-color: var(--kts-accent);
}

/* Masonry Grid */
.arc-works__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto;
  gap: var(--kts-space-lg);
}

.arc-works__item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.arc-works__item--tall {
  grid-row: span 2;
}

.arc-works__item--wide {
  grid-column: span 2;
}

.arc-works__item-image {
  width: 100%;
  height: 100%;
  min-height: 300px;
  object-fit: cover;
  transition: transform 0.8s var(--kts-ease-out);
}

.arc-works__item:hover .arc-works__item-image {
  transform: scale(1.05);
}

.arc-works__item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26, 26, 26, 0.8) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.5s var(--kts-ease);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--kts-space-lg);
}

.arc-works__item:hover .arc-works__item-overlay {
  opacity: 1;
}

.arc-works__item-category {
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--kts-accent);
  margin-bottom: var(--kts-space-xs);
}

.arc-works__item-title {
  font-family: var(--kts-font-heading);
  font-size: 1.5rem;
  color: var(--kts-white);
  line-height: 1.2;
}

.arc-works__item-dot {
  position: absolute;
  top: var(--kts-space-md);
  left: var(--kts-space-md);
  width: 12px;
  height: 12px;
  background: var(--kts-accent);
  border-radius: 50%;
  opacity: 0;
  transform: scale(0);
  transition: opacity var(--kts-duration-fast) var(--kts-ease),
    transform var(--kts-duration-fast) var(--kts-ease);
}

.arc-works__item:hover .arc-works__item-dot {
  opacity: 1;
  transform: scale(1);
}

/* ==========================================================================
   PARTNERS SECTION
   ========================================================================== */

.arc-partners {
  padding: var(--kts-space-xl) 0;
  background: var(--kts-off-white);
}

.arc-partners__header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-3xl);
  margin-bottom: var(--kts-space-lg);
  align-items: start;
}

.arc-partners__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.15;
  font-weight: 400;
}

.arc-partners__text {
  font-size: 0.9375rem;
  color: var(--kts-dark-gray);
  line-height: 1.8;
}

.arc-partners__text strong {
  color: var(--kts-black);
  font-weight: 600;
}

.arc-partners__logos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--kts-space-xl);
  align-items: center;
}

.arc-partners__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  opacity: 0.35;
  transition: opacity var(--kts-duration-fast) var(--kts-ease);
  filter: grayscale(100%);
}

.arc-partners__logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

.arc-partners__logo img {
  max-height: 100%;
  width: auto;
}

.arc-partners__logo-text {
  font-family: var(--kts-font-body);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--kts-black);
}

/* ==========================================================================
   STUDIO SHOWCASE SECTION
   ========================================================================== */

.arc-studio {
  padding: var(--kts-space-xl) 0;
}

.arc-studio__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: var(--kts-space-md);
}

.arc-studio__item {
  overflow: hidden;
  position: relative;
}

.arc-studio__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--kts-ease-out);
}

.arc-studio__item:hover img {
  transform: scale(1.03);
}

.arc-studio__item--wide {
  grid-column: span 2;
}

.arc-studio__item--tall {
  grid-row: span 2;
}

/* ==========================================================================
   NEWS ARCHIVE SECTION
   ========================================================================== */

.arc-news {
  padding: var(--kts-space-4xl) 0;
  background: var(--kts-off-white);
}

.arc-news__header {
  margin-bottom: var(--kts-space-lg);
}

.arc-news__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
}

.arc-news__title em {
  font-style: italic;
}

.arc-news__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-lg);
}

.arc-news__card {
  background: var(--kts-white);
  overflow: hidden;
  transition: transform var(--kts-duration-fast) var(--kts-ease),
    box-shadow var(--kts-duration-fast) var(--kts-ease);
}

.arc-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
}

.arc-news__card-image {
  overflow: hidden;
  height: 220px;
}

.arc-news__card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--kts-ease-out);
}

.arc-news__card:hover .arc-news__card-image img {
  transform: scale(1.05);
}

.arc-news__card-content {
  padding: var(--kts-space-lg);
}

.arc-news__card-meta {
  display: flex;
  align-items: center;
  gap: var(--kts-space-sm);
  margin-bottom: var(--kts-space-sm);
}

.arc-news__card-category {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--kts-accent);
  background: rgba(230, 57, 70, 0.08);
  padding: 4px 10px;
}

.arc-news__card-date {
  font-size: 0.75rem;
  color: var(--kts-mid-gray);
}

.arc-news__card-title {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  line-height: 1.3;
  margin-bottom: var(--kts-space-xs);
}

.arc-news__card-title a:hover {
  color: var(--kts-accent);
}

.arc-news__card-excerpt {
  font-size: 0.875rem;
  color: var(--kts-dark-gray);
  line-height: 1.6;
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */

.arc-cta {
  position: relative;
  padding: var(--kts-space-4xl) 0;
  background: var(--kts-black);
  color: var(--kts-white);
  overflow: hidden;
}

.arc-cta__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.arc-cta__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.arc-cta__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.arc-cta__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1.1;
  font-weight: 400;
  margin-bottom: var(--kts-space-lg);
}

.arc-cta__title em {
  font-style: italic;
  color: var(--kts-accent);
}

.arc-cta__button {
  display: inline-flex;
  align-items: center;
  gap: var(--kts-space-sm);
  padding: 1rem 2.5rem;
  background: var(--kts-accent);
  color: var(--kts-white);
  font-family: var(--kts-font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: background var(--kts-duration-fast) var(--kts-ease),
    transform var(--kts-duration-fast) var(--kts-ease);
}

.arc-cta__button:hover {
  background: var(--kts-white);
  color: var(--kts-black);
  transform: translateY(-2px);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.kts-footer {
  background: var(--kts-black);
  color: var(--kts-white);
  padding-top: var(--kts-space-4xl);
}

.kts-footer a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--kts-duration-fast) var(--kts-ease);
}

.kts-footer a:hover {
  color: var(--kts-white);
}

.kts-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--kts-space-3xl);
  padding-bottom: var(--kts-space-3xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.kts-footer__brand {
  font-family: var(--kts-font-heading);
  font-size: 1.75rem;
  color: var(--kts-white);
  margin-bottom: var(--kts-space-md);
}

.kts-footer__desc {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
  max-width: 320px;
}

.kts-footer__heading {
  font-family: var(--kts-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--kts-white);
  margin-bottom: var(--kts-space-lg);
}

.kts-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--kts-space-sm);
}

.kts-footer__link {
  font-size: 0.875rem;
}

.kts-footer__newsletter-text {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--kts-space-md);
}

.kts-footer__newsletter-form {
  display: flex;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.kts-footer__newsletter-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--kts-white);
  font-family: var(--kts-font-body);
  font-size: 0.875rem;
  padding: var(--kts-space-xs) 0;
  outline: none;
}

.kts-footer__newsletter-input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.kts-footer__newsletter-btn {
  background: none;
  border: none;
  color: var(--kts-white);
  cursor: pointer;
  padding: var(--kts-space-xs);
  transition: color var(--kts-duration-fast) var(--kts-ease);
}

.kts-footer__newsletter-btn:hover {
  color: var(--kts-accent);
}

.kts-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--kts-space-lg) 0;
}

.kts-footer__copyright {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.35);
}

.kts-footer__social {
  display: flex;
  gap: var(--kts-space-md);
}

.kts-footer__social-link {
  font-size: 0.8125rem;
  font-weight: 500;
}

/* ==========================================================================
   INNER PAGE STYLES
   ========================================================================== */

.arc-page-header {
  padding: calc(var(--kts-space-4xl) + 80px) 0 var(--kts-space-3xl);
  text-align: center;
}

.arc-page-header__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 1.05;
}

.arc-page-header__breadcrumb {
  margin-top: var(--kts-space-md);
  font-size: 0.8125rem;
  color: var(--kts-mid-gray);
}

.arc-page-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--kts-space-3xl) var(--kts-space-lg);
}

.arc-page-content p {
  margin-bottom: var(--kts-space-md);
}

/* --- Full-width page hero image --- */
.arc-page-hero-image {
  width: 100%;
  height: 55vh;
  overflow: hidden;
}

.arc-page-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Alternate section bg --- */
.arc-section--alt {
  background: var(--kts-off-white);
}

/* --- Content block (Vision / Mission cards) --- */
.arc-content-block {
  padding: var(--kts-space-xl);
  border: 1px solid var(--kts-light-gray);
  background: var(--kts-white);
  transition: box-shadow 0.3s var(--kts-ease);
}

.arc-content-block:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.arc-content-block__title {
  font-family: var(--kts-font-heading);
  font-size: 1.5rem;
  font-weight: 400;
  margin-top: var(--kts-space-md);
  margin-bottom: var(--kts-space-sm);
}

.arc-content-block__text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--kts-dark-gray);
}

/* --- Feature list with check icons --- */
.arc-feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--kts-space-md);
}

.arc-feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--kts-dark-gray);
}

.arc-feature-list__item svg {
  flex-shrink: 0;
  margin-top: 0.25rem;
  color: var(--kts-accent);
}

/* --- Stats grid (2x2) --- */
.arc-about__stats--grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-lg);
}

.arc-cta__subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--kts-space-sm);
  margin-bottom: var(--kts-space-lg);
}

/* 404 */
.arc-404 {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
  padding: var(--kts-space-4xl) var(--kts-space-lg);
}

.arc-404__number {
  font-family: var(--kts-font-heading);
  font-size: clamp(8rem, 20vw, 20rem);
  line-height: 1;
  color: var(--kts-light-gray);
}

.arc-404__text {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  margin: var(--kts-space-lg) 0;
}

.arc-404__button {
  display: inline-flex;
  align-items: center;
  gap: var(--kts-space-xs);
  padding: 1rem 2rem;
  background: var(--kts-black);
  color: var(--kts-white);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: background var(--kts-duration-fast) var(--kts-ease);
}

.arc-404__button:hover {
  background: var(--kts-accent);
  color: var(--kts-white);
}

/* Blog Cards Grid */
.arc-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-lg);
}

/* Search page */
.arc-search-form {
  display: flex;
  max-width: 600px;
  margin: 0 auto var(--kts-space-3xl);
  border-bottom: 2px solid var(--kts-black);
}

.arc-search-form input[type="search"] {
  flex: 1;
  border: none;
  font-family: var(--kts-font-heading);
  font-size: 1.5rem;
  padding: var(--kts-space-sm) 0;
  background: none;
  outline: none;
}

.arc-search-form button {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--kts-space-sm);
}

/* Projects filter tabs */
.arc-filter-tabs {
  display: flex;
  gap: var(--kts-space-lg);
  margin-bottom: var(--kts-space-3xl);
  justify-content: center;
  flex-wrap: wrap;
}

.arc-filter-tab {
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--kts-mid-gray);
  cursor: pointer;
  padding-bottom: 4px;
  border: none;
  background: none;
  position: relative;
  transition: color var(--kts-duration-fast) var(--kts-ease);
}

.arc-filter-tab.is-active,
.arc-filter-tab:hover {
  color: var(--kts-black);
}

.arc-filter-tab.is-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--kts-accent);
}

/* Services */
.arc-service-card {
  padding: var(--kts-space-xl);
  border: 1px solid var(--kts-light-gray);
  transition: border-color var(--kts-duration-fast) var(--kts-ease),
    transform var(--kts-duration-fast) var(--kts-ease);
}

.arc-service-card:hover {
  border-color: var(--kts-accent);
  transform: translateY(-4px);
}

.arc-service-card__number {
  font-family: var(--kts-font-heading);
  font-size: 3rem;
  color: var(--kts-light-gray);
  margin-bottom: var(--kts-space-md);
}

.arc-service-card__title {
  font-family: var(--kts-font-heading);
  font-size: 1.5rem;
  margin-bottom: var(--kts-space-sm);
}

.arc-service-card__text {
  font-size: 0.875rem;
  color: var(--kts-dark-gray);
  line-height: 1.7;
}

/* ==========================================================================
   SCROLL ANIMATIONS
   ========================================================================== */

.arc-fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--kts-ease-out),
    transform 0.8s var(--kts-ease-out);
}

.arc-fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.arc-slide-up {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.8s var(--kts-ease-out),
    transform 0.8s var(--kts-ease-out);
}

.arc-slide-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.arc-stagger>* {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s var(--kts-ease-out),
    transform 0.6s var(--kts-ease-out);
}

.arc-stagger.is-visible>*:nth-child(1) {
  transition-delay: 0s;
}

.arc-stagger.is-visible>*:nth-child(2) {
  transition-delay: 0.1s;
}

.arc-stagger.is-visible>*:nth-child(3) {
  transition-delay: 0.2s;
}

.arc-stagger.is-visible>*:nth-child(4) {
  transition-delay: 0.3s;
}

.arc-stagger.is-visible>*:nth-child(5) {
  transition-delay: 0.4s;
}

.arc-stagger.is-visible>*:nth-child(6) {
  transition-delay: 0.5s;
}

.arc-stagger.is-visible>*:nth-child(7) {
  transition-delay: 0.6s;
}

.arc-stagger.is-visible>*:nth-child(8) {
  transition-delay: 0.7s;
}

.arc-stagger.is-visible>* {
  opacity: 1;
  transform: translateY(0);
}

.arc-scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s var(--kts-ease-out),
    transform 0.8s var(--kts-ease-out);
}

.arc-scale-in.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */

.arc-services {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.arc-services__card {
  position: relative;
  padding: var(--kts-space-2xl) var(--kts-space-lg);
  border-right: 1px solid var(--kts-light-gray);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--kts-space-md);
  transition: background 0.4s var(--kts-ease);
  overflow: hidden;
}

.arc-services__card:last-child {
  border-right: none;
}

.arc-services__card:hover {
  background: var(--kts-black);
}

.arc-services__card:hover .arc-services__number,
.arc-services__card:hover .arc-services__name,
.arc-services__card:hover .arc-services__desc,
.arc-services__card:hover .arc-services__link {
  color: var(--kts-white);
}

.arc-services__card:hover .arc-services__icon {
  background: var(--kts-accent);
  color: var(--kts-white);
}

.arc-services__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--kts-light-gray);
  transition: all 0.3s var(--kts-ease);
  border-radius: 2px;
}

.arc-services__number {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--kts-accent);
  transition: color 0.3s;
}

.arc-services__name {
  font-family: var(--kts-font-heading);
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--kts-black);
  line-height: 1.3;
  transition: color 0.3s;
}

.arc-services__desc {
  font-size: 0.875rem;
  color: var(--kts-mid-gray);
  line-height: 1.7;
  transition: color 0.3s;
}

.arc-services__link {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kts-accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
  transition: color 0.3s;
}

.arc-services__link svg {
  transition: transform 0.25s;
}

.arc-services__card:hover .arc-services__link svg {
  transform: translateX(4px);
}

/* --- Service Card Body & Accordion Toggle --- */
/* Toggle button: hidden on desktop, visible on mobile */
.arc-services__toggle {
  display: none;
  position: absolute;
  top: var(--kts-space-md);
  right: var(--kts-space-md);
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--kts-light-gray);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s;
}

.arc-services__toggle:hover {
  border-color: var(--kts-accent);
}

.arc-services__chevron {
  transition: transform 0.3s var(--kts-ease);
}

.arc-services__card[data-open] .arc-services__chevron {
  transform: rotate(180deg);
}

/* Body: always visible on desktop */
.arc-services__body {
  display: flex;
  flex-direction: column;
  gap: var(--kts-space-md);
}


/* ==========================================================================
   SERVICES V2 — IMAGE BACKGROUND CARDS
   ========================================================================== */

.arc-services-v2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--kts-space-md);
}

.arc-services-v2__card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 380px;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: #FFFFFF;
}

.arc-services-v2__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--kts-ease-out), filter 0.6s ease;
  z-index: 1;
}

.arc-services-v2__card:hover .arc-services-v2__bg {
  transform: scale(1.08);
  filter: brightness(0.7);
}

.arc-services-v2__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.75) 0%,
      rgba(0, 0, 0, 0.3) 40%,
      rgba(0, 0, 0, 0.1) 100%);
  z-index: 2;
}

.arc-services-v2__content {
  position: relative;
  z-index: 3;
  padding: var(--kts-space-xl) var(--kts-space-lg);
}

.arc-services-v2__number {
  font-family: var(--kts-font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  opacity: 0.7;
  display: block;
  margin-bottom: var(--kts-space-xs);
}

.arc-services-v2__name {
  font-family: var(--kts-font-heading);
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.2;
  margin: 0 0 var(--kts-space-sm);
  color: #FFFFFF;
}

.arc-services-v2__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  color: #FFFFFF;
  margin-bottom: var(--kts-space-sm);
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.arc-services-v2__card:hover .arc-services-v2__arrow {
  background: var(--kts-accent);
  border-color: var(--kts-accent);
  transform: rotate(0deg) scale(1.1);
}

.arc-services-v2__desc {
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

@media (max-width: 768px) {
  .arc-services-v2 {
    grid-template-columns: 1fr;
  }

  .arc-services-v2__card {
    min-height: 300px;
  }
}


/* ==========================================================================
   ABOUT SECTION V3 — Full-bleed image + dark glass card
   ========================================================================== */

.arc-about-v3 {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.arc-about-v3__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.arc-about-v3__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right,
      rgba(0, 0, 0, 0.55) 0%,
      rgba(0, 0, 0, 0.2) 50%,
      rgba(0, 0, 0, 0.05) 100%);
  z-index: 2;
}

.arc-about-v3 .arc-container {
  position: relative;
  z-index: 3;
}

.arc-about-v3__card {
  max-width: 520px;
  background: rgba(20, 20, 20, 0.75);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0;
  padding: var(--kts-space-3xl) var(--kts-space-2xl);
  color: #FFFFFF;
}

.arc-about-v3__tagline {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--kts-accent);
  margin-bottom: var(--kts-space-md);
}

.arc-about-v3__heading {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  line-height: 1.25;
  color: #FFFFFF;
  margin: 0 0 var(--kts-space-lg);
}

.arc-about-v3__heading em {
  font-style: italic;
  color: var(--kts-accent);
}

.arc-about-v3__desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 var(--kts-space-xl);
}

.arc-about-v3__stats {
  display: flex;
  gap: var(--kts-space-xl);
  margin-bottom: var(--kts-space-xl);
  padding-bottom: var(--kts-space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.arc-about-v3__stat {
  display: flex;
  flex-direction: column;
}

.arc-about-v3__stat-number {
  font-family: var(--kts-font-heading);
  font-size: 2rem;
  font-weight: 400;
  color: #FFFFFF;
  line-height: 1;
}

/* Removed ::after '+' sign per user request */

.arc-about-v3__stat-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

.arc-about-v3__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #FFFFFF;
  text-decoration: none;
  transition: color 0.3s ease, gap 0.3s ease;
}

.arc-about-v3__cta:hover {
  color: var(--kts-accent);
  gap: 0.75rem;
}

@media (max-width: 768px) {
  .arc-about-v3 {
    min-height: 480px;
  }

  .arc-about-v3__card {
    max-width: 100%;
    padding: var(--kts-space-xl) var(--kts-space-lg);
  }

  .arc-about-v3__stats {
    gap: var(--kts-space-lg);
  }

  .arc-about-v3__stat-number {
    font-size: 1.5rem;
  }
}


/* ==========================================================================
   CEO QUOTE SECTION
   ========================================================================== */

.arc-ceo-quote {
  overflow: hidden;
}

.arc-ceo-quote__inner {
  display: grid;
  grid-template-columns: 0.45fr 0.55fr;
  gap: 0;
  min-height: 480px;
}

.arc-ceo-quote__image {
  position: relative;
  overflow: hidden;
}

.arc-ceo-quote__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  aspect-ratio: 4 / 3;
}

.arc-ceo-quote__content {
  padding: var(--kts-space-3xl) var(--kts-space-3xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.arc-ceo-quote__intro {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--kts-text-secondary);
  margin-bottom: var(--kts-space-xl);
}

.arc-ceo-quote__intro p {
  margin: 0 0 var(--kts-space-md);
}

.arc-ceo-quote__blockquote {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.5;
  color: var(--kts-black);
  margin: 0 0 var(--kts-space-xl);
  position: relative;
  padding-left: 0;
}

.arc-ceo-quote__blockquote::before {
  content: '\201C';
  font-size: 4rem;
  color: var(--kts-accent);
  position: absolute;
  top: -1.5rem;
  left: -0.5rem;
  line-height: 1;
  font-family: Georgia, serif;
}

.arc-ceo-quote__author {
  display: flex;
  align-items: center;
  gap: var(--kts-space-md);
}

.arc-ceo-quote__author-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--kts-accent);
  flex-shrink: 0;
}

.arc-ceo-quote__author-info {
  display: flex;
  flex-direction: column;
}

.arc-ceo-quote__author-role {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kts-text-secondary);
}

.arc-ceo-quote__author-name {
  font-family: var(--kts-font-heading);
  font-size: 1rem;
  font-weight: 400;
  color: var(--kts-black);
}

@media (max-width: 768px) {
  .arc-ceo-quote__inner {
    grid-template-columns: 1fr;
  }

  .arc-ceo-quote__image {
    height: 360px;
  }

  .arc-ceo-quote__content {
    padding: var(--kts-space-xl) var(--kts-space-lg);
  }
}


/* ==========================================================================
   WHY CHOOSE US SECTION
   ========================================================================== */

.arc-why {
  overflow: hidden;
}

.arc-why__header {
  text-align: center;
  margin-bottom: var(--kts-space-3xl);
}

.arc-why__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2rem, 3.5vw, 3.5rem);
  font-weight: 400;
  color: var(--kts-black);
  line-height: 1.15;
  margin-bottom: var(--kts-space-md);
}

.arc-why__subtitle {
  font-size: 1rem;
  color: var(--kts-mid-gray);
  max-width: 48ch;
  margin: 0 auto;
  line-height: 1.7;
}

.arc-why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-lg);
}

.arc-why__card {
  padding: var(--kts-space-xl) var(--kts-space-lg);
  border: 1px solid var(--kts-light-gray);
  text-align: center;
  transition: border-color 0.3s var(--kts-ease),
    transform 0.3s var(--kts-ease),
    box-shadow 0.3s var(--kts-ease);
  position: relative;
  overflow: hidden;
}

.arc-why__card:hover {
  border-color: var(--kts-accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

.arc-why__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--kts-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--kts-ease);
}

.arc-why__card:hover::before {
  transform: scaleX(1);
}

.arc-why__card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--kts-space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--kts-off-white);
  border-radius: 50%;
  color: var(--kts-accent);
}

.arc-why__card-number {
  font-family: var(--kts-font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--kts-accent);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.arc-why__card-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--kts-mid-gray);
  margin-bottom: var(--kts-space-md);
}

.arc-why__card-name {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  color: var(--kts-black);
  margin-bottom: var(--kts-space-sm);
}

.arc-why__card-desc {
  font-size: 0.875rem;
  color: var(--kts-mid-gray);
  line-height: 1.7;
}

/* ==========================================================================
   QUOTE FORM SECTION
   ========================================================================== */

.arc-quote {
  background: var(--kts-black);
  padding: var(--kts-space-4xl) 0;
  position: relative;
  overflow: hidden;
}

.arc-quote::before {
  content: 'BÁO GIÁ';
  position: absolute;
  top: 50%;
  left: -5%;
  transform: translateY(-50%);
  font-family: var(--kts-font-heading);
  font-size: 15vw;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.02);
  white-space: nowrap;
  pointer-events: none;
}

.arc-quote__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-3xl);
  align-items: center;
}

.arc-quote__content h2 {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.75rem, 2.5vw, 2.5rem);
  font-weight: 400;
  color: var(--kts-white);
  line-height: 1.2;
  margin-bottom: var(--kts-space-md);
}

.arc-quote__content p {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  margin-bottom: var(--kts-space-lg);
}

.arc-quote__highlight {
  display: flex;
  gap: var(--kts-space-xl);
}

.arc-quote__highlight-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.8125rem;
}

.arc-quote__highlight-item svg {
  color: var(--kts-accent);
  flex-shrink: 0;
}

.arc-quote__form {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--kts-space-xl);
}

.arc-quote__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-md);
  margin-bottom: var(--kts-space-md);
}

.arc-quote__input,
.arc-quote__select,
.arc-quote__textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--kts-white);
  font-family: var(--kts-font-body);
  font-size: 0.875rem;
  transition: border-color 0.25s;
}

.arc-quote__input::placeholder,
.arc-quote__textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.arc-quote__input:focus,
.arc-quote__select:focus,
.arc-quote__textarea:focus {
  outline: none;
  border-color: var(--kts-accent);
}

.arc-quote__select {
  appearance: none;
  cursor: pointer;
}

.arc-quote__select option {
  background: var(--kts-black);
  color: var(--kts-white);
}

.arc-quote__textarea {
  resize: vertical;
  min-height: 100px;
  margin-bottom: var(--kts-space-md);
}

.arc-quote__submit {
  width: 100%;
  padding: 1rem;
  background: var(--kts-accent);
  color: var(--kts-white);
  border: none;
  font-family: var(--kts-font-body);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.25s;
}

.arc-quote__submit:hover {
  background: #cf2f3c;
}

/* ==========================================================================
   SERVICE DETAIL PAGE
   ========================================================================== */

.arc-service-detail-img {
  width: 100%;
  height: 450px;
  object-fit: cover;
  border-radius: 4px;
}

.arc-service-detail-row {
  align-items: center;
  gap: 4rem;
}

.arc-service-detail-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.arc-service-detail-title {
  font-family: var(--kts-font-heading);
  font-size: 2.5rem;
  margin-bottom: var(--kts-space-md);
  color: var(--kts-black);
}

.arc-service-detail-number {
  font-family: var(--kts-font-mono, monospace);
  font-size: 0.875rem;
  color: var(--kts-accent);
  margin-bottom: var(--kts-space-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.arc-service-detail-text {
  color: var(--kts-gray);
  line-height: 1.8;
  margin-bottom: var(--kts-space-lg);
}

.arc-service-detail-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--kts-space-lg) 0;
}

.arc-service-detail-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--kts-black);
  font-size: 0.9375rem;
}

.arc-service-detail-list li svg {
  color: var(--kts-accent);
  flex-shrink: 0;
}

.arc-service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--kts-black);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color var(--kts-duration-fast) var(--kts-ease);
  cursor: pointer;
}

.arc-service-link:hover {
  color: var(--kts-accent);
}

@media (min-width: 769px) {
  .arc-order-md-2 {
    order: 2;
  }

  .arc-order-md-1 {
    order: 1;
  }
}

/* ==========================================================================
   BLOG POSTS GRID
   ========================================================================== */

.arc-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-xl);
}

@media (max-width: 1024px) {
  .arc-posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .arc-posts-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   ARTICLE BODY
   ========================================================================== */

.arc-article-body {
  max-width: 720px;
  margin: var(--kts-space-xl) auto 0;
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--kts-black);
}

.arc-article-body h2 {
  font-family: var(--kts-font-heading);
  font-size: 1.75rem;
  font-weight: 400;
  margin: var(--kts-space-2xl) 0 var(--kts-space-md);
  color: var(--kts-black);
}

.arc-article-body p {
  margin-bottom: var(--kts-space-md);
  color: var(--kts-gray);
}

.arc-article-lead {
  font-size: 1.1875rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--kts-black);
  border-left: 3px solid var(--kts-accent);
  padding-left: var(--kts-space-md);
  margin-bottom: var(--kts-space-xl);
}

.arc-article-body figure {
  margin: var(--kts-space-xl) 0;
}

.arc-article-body figure img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 4px;
}

.arc-article-body figcaption {
  font-size: 0.8125rem;
  color: var(--kts-gray);
  text-align: center;
  margin-top: var(--kts-space-sm);
  font-style: italic;
}

.arc-article-body blockquote {
  margin: var(--kts-space-xl) 0;
  padding: var(--kts-space-lg) var(--kts-space-xl);
  background: var(--kts-off-white);
  border-left: 4px solid var(--kts-accent);
  border-radius: 0 4px 4px 0;
}

.arc-article-body blockquote p {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--kts-black);
  margin-bottom: 0;
}

.arc-article-body ul,
.arc-article-body ol {
  margin: 0 0 var(--kts-space-md) var(--kts-space-md);
  color: var(--kts-gray);
}

.arc-article-body li {
  margin-bottom: 0.5rem;
}

/* Related Posts */
.arc-related-posts {
  margin-top: var(--kts-space-2xl);
  padding-top: var(--kts-space-2xl);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.arc-related-posts .arc-section-title {
  font-size: 1.75rem;
  margin-bottom: var(--kts-space-xl);
}

/* ==========================================================================
   CONTACT PAGE
   ========================================================================== */

.arc-contact-info-card {
  background: var(--kts-white);
  padding: var(--kts-space-xl);
  text-align: center;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 4px;
  transition: box-shadow var(--kts-duration-fast) var(--kts-ease);
}

.arc-contact-info-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.arc-contact-info-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--kts-space-md);
  background: rgba(200, 50, 50, 0.08);
  border-radius: 50%;
  color: var(--kts-accent);
}

.arc-contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.arc-contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.arc-contact-form__input,
.arc-contact-form__textarea {
  padding: 1rem 0;
  border: none;
  border-bottom: 1px solid #E8E8E8;
  font-family: inherit;
  font-size: 0.9375rem;
  outline: none;
  background: none;
  transition: border-color var(--kts-duration-fast) var(--kts-ease);
  width: 100%;
}

.arc-contact-form__input:focus,
.arc-contact-form__textarea:focus {
  border-color: var(--kts-accent);
}

.arc-contact-form__textarea {
  resize: vertical;
}

.arc-contact-form__submit {
  align-self: flex-start;
}

.arc-map-container {
  height: 400px;
  overflow: hidden;
  border-radius: 4px;
}

.arc-map-container iframe {
  border: 0;
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   REDESIGN 2026 — NEW COMPONENTS
   ========================================================================== */

/* --- Immersive Page Hero with Overlay --- */
.arc-hero-page {
  position: relative;
  width: 100%;
  height: 75vh;
  min-height: 500px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
}

.arc-hero-page__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.arc-hero-page__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.arc-hero-page__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg,
      rgba(26, 26, 26, 0.15) 0%,
      rgba(26, 26, 26, 0.65) 100%);
}

.arc-hero-page__content {
  position: relative;
  z-index: 3;
  padding: var(--kts-space-3xl) var(--kts-space-xl);
  max-width: var(--kts-wide-width);
  width: 100%;
  margin: 0 auto;
}

.arc-hero-page__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(2.75rem, 6vw, 5rem);
  font-weight: 400;
  line-height: 1.08;
  color: var(--kts-white);
  margin-bottom: var(--kts-space-sm);
}

.arc-hero-page__title em {
  font-style: italic;
  color: rgba(255, 255, 255, 0.75);
}

.arc-hero-page__breadcrumb {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.05em;
}

.arc-hero-page__breadcrumb a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  transition: color 0.3s;
}

.arc-hero-page__breadcrumb a:hover {
  color: var(--kts-white);
}

.arc-hero-page--short {
  height: 50vh;
  min-height: 380px;
}

/* --- Asymmetric Split Section --- */
.arc-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--kts-space-3xl);
  align-items: center;
}

.arc-split--reverse {
  direction: rtl;
}

.arc-split--reverse>* {
  direction: ltr;
}

.arc-split--55-45 {
  grid-template-columns: 55fr 45fr;
}

.arc-split--60-40 {
  grid-template-columns: 60fr 40fr;
}

.arc-split--40-60 {
  grid-template-columns: 40fr 60fr;
}

.arc-split__media {
  position: relative;
  overflow: hidden;
}

.arc-split__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  transition: transform 0.8s var(--kts-ease-out);
}

.arc-split__media:hover img {
  transform: scale(1.03);
}

.arc-split__media--offset {
  margin-top: 3rem;
}

.arc-split__media--rounded {
  border-radius: 4px;
  overflow: hidden;
}

.arc-split__label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--kts-accent);
  margin-bottom: var(--kts-space-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.arc-split__label::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--kts-accent);
}

.arc-split__heading {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--kts-space-lg);
}

.arc-split__heading em {
  font-style: italic;
}

.arc-split__text {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--kts-dark-gray);
  margin-bottom: var(--kts-space-md);
}

.arc-split__text:last-of-type {
  margin-bottom: 0;
}

/* --- Scroll Reveal Animation --- */
.arc-reveal {
  opacity: 0;
  clip-path: inset(0 0 15% 0);
  transition: opacity 1s var(--kts-ease-out),
    clip-path 1s var(--kts-ease-out);
}

.arc-reveal.is-visible {
  opacity: 1;
  clip-path: inset(0 0 0 0);
}

.arc-reveal-up {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s var(--kts-ease-out),
    transform 0.8s var(--kts-ease-out);
}

.arc-reveal-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Service Card V2 (with image) --- */
.arc-card-v2-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--kts-space-lg);
}

.arc-card-v2 {
  position: relative;
  overflow: hidden;
  background: var(--kts-white);
  border: 1px solid var(--kts-light-gray);
  transition: border-color 0.4s var(--kts-ease),
    box-shadow 0.4s var(--kts-ease);
}

.arc-card-v2:hover {
  border-color: var(--kts-accent);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
}

.arc-card-v2__image {
  position: relative;
  width: 100%;
  height: 260px;
  overflow: hidden;
}

.arc-card-v2__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--kts-ease-out);
}

.arc-card-v2:hover .arc-card-v2__image img {
  transform: scale(1.05);
}

.arc-card-v2__number {
  position: absolute;
  top: var(--kts-space-md);
  left: var(--kts-space-md);
  font-family: var(--kts-font-heading);
  font-size: 3.5rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.4);
  z-index: 2;
  line-height: 1;
}

.arc-card-v2__body {
  padding: var(--kts-space-xl);
}

.arc-card-v2__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--kts-light-gray);
  border-radius: 2px;
  margin-bottom: var(--kts-space-md);
  transition: all 0.3s var(--kts-ease);
}

.arc-card-v2:hover .arc-card-v2__icon {
  background: var(--kts-accent);
  border-color: var(--kts-accent);
  color: var(--kts-white);
}

.arc-card-v2__title {
  font-family: var(--kts-font-heading);
  font-size: 1.375rem;
  font-weight: 400;
  margin-bottom: var(--kts-space-sm);
  line-height: 1.3;
}

.arc-card-v2__desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--kts-dark-gray);
  margin-bottom: var(--kts-space-lg);
}

.arc-card-v2__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--kts-black);
  text-decoration: none;
  transition: color 0.3s var(--kts-ease), gap 0.3s var(--kts-ease);
}

.arc-card-v2__link:hover {
  color: var(--kts-accent);
  gap: 0.85rem;
}

/* --- Stats Bar V2 --- */
.arc-stats-v2 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  z-index: 4;
}

.arc-stats-v2--overlap {
  margin-top: -30px;
  max-width: var(--kts-content-width);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--kts-space-lg);
}

.arc-stats-v2__item {
  background: var(--kts-white);
  padding: var(--kts-space-xl) var(--kts-space-lg);
  text-align: center;
  border: 1px solid var(--kts-light-gray);
  margin-left: -1px;
  transition: box-shadow 0.3s var(--kts-ease);
}

.arc-stats-v2__item:first-child {
  margin-left: 0;
}

.arc-stats-v2__item:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  z-index: 2;
}

.arc-stats-v2__number {
  font-family: var(--kts-font-heading);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 400;
  color: var(--kts-accent);
  line-height: 1.1;
}

.arc-stats-v2__plus {
  font-family: var(--kts-font-heading);
  font-size: 1.5rem;
  color: var(--kts-accent);
}

.arc-stats-v2__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--kts-mid-gray);
  margin-top: var(--kts-space-xs);
}

/* --- Process / Numbered Steps --- */
.arc-process {
  counter-reset: process-step;
}

.arc-process__step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--kts-space-lg);
  padding: var(--kts-space-xl) 0;
  border-bottom: 1px solid var(--kts-light-gray);
  align-items: start;
}

.arc-process__step:last-child {
  border-bottom: none;
}

.arc-process__number {
  font-family: var(--kts-font-heading);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--kts-light-gray);
  line-height: 1.1;
  transition: color 0.3s;
}

.arc-process__step:hover .arc-process__number {
  color: var(--kts-accent);
}

.arc-process__title {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: var(--kts-space-xs);
}

.arc-process__desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--kts-dark-gray);
}

/* --- Blog Grid V2 --- */
.arc-blog-v2-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-xl);
}

.arc-blog-v2-card {
  background: var(--kts-white);
  border: 1px solid var(--kts-light-gray);
  overflow: hidden;
  transition: border-color 0.3s var(--kts-ease),
    box-shadow 0.3s var(--kts-ease),
    transform 0.4s var(--kts-ease-out);
}

.arc-blog-v2-card:hover {
  border-color: var(--kts-accent);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.arc-blog-v2-card__image {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
}

.arc-blog-v2-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--kts-ease-out);
}

.arc-blog-v2-card:hover .arc-blog-v2-card__image img {
  transform: scale(1.05);
}

.arc-blog-v2-card__category {
  position: absolute;
  top: var(--kts-space-md);
  left: var(--kts-space-md);
  background: var(--kts-accent);
  color: var(--kts-white);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  z-index: 2;
}

.arc-blog-v2-card__body {
  padding: var(--kts-space-lg);
}

.arc-blog-v2-card__date {
  font-size: 0.75rem;
  color: var(--kts-mid-gray);
  margin-bottom: var(--kts-space-sm);
}

.arc-blog-v2-card__title {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.35;
  margin-bottom: var(--kts-space-sm);
}

.arc-blog-v2-card__title a {
  color: var(--kts-black);
  text-decoration: none;
  transition: color 0.3s;
}

.arc-blog-v2-card__title a:hover {
  color: var(--kts-accent);
}

.arc-blog-v2-card__excerpt {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--kts-dark-gray);
}

/* --- Featured Article Card --- */
.arc-featured-article {
  display: grid;
  grid-template-columns: 60fr 40fr;
  gap: 0;
  border: 1px solid var(--kts-light-gray);
  overflow: hidden;
  background: var(--kts-white);
  margin-bottom: var(--kts-space-3xl);
}

.arc-featured-article__image {
  position: relative;
  overflow: hidden;
  min-height: 400px;
}

.arc-featured-article__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--kts-ease-out);
}

.arc-featured-article:hover .arc-featured-article__image img {
  transform: scale(1.03);
}

.arc-featured-article__badge {
  position: absolute;
  top: var(--kts-space-lg);
  left: var(--kts-space-lg);
  background: var(--kts-accent);
  color: var(--kts-white);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  z-index: 2;
}

.arc-featured-article__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--kts-space-2xl);
}

.arc-featured-article__category {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--kts-accent);
  margin-bottom: var(--kts-space-md);
}

.arc-featured-article__title {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: var(--kts-space-md);
}

.arc-featured-article__title a {
  color: var(--kts-black);
  text-decoration: none;
  transition: color 0.3s;
}

.arc-featured-article__title a:hover {
  color: var(--kts-accent);
}

.arc-featured-article__excerpt {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--kts-dark-gray);
  margin-bottom: var(--kts-space-lg);
}

.arc-featured-article__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--kts-black);
  text-decoration: none;
  transition: color 0.3s, gap 0.3s;
}

.arc-featured-article__link:hover {
  color: var(--kts-accent);
  gap: 0.85rem;
}

/* --- Vision / Mission Split --- */
.arc-vision-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 400px;
}

.arc-vision-split__panel {
  padding: var(--kts-space-3xl) var(--kts-space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.arc-vision-split__panel--dark {
  background: var(--kts-black);
  color: var(--kts-white);
}

.arc-vision-split__panel--dark .arc-vision-split__text {
  color: rgba(255, 255, 255, 0.7);
}

.arc-vision-split__panel--light {
  background: var(--kts-off-white);
}

.arc-vision-split__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  margin-bottom: var(--kts-space-lg);
  opacity: 0.6;
}

.arc-vision-split__panel--dark .arc-vision-split__icon {
  border-color: var(--kts-accent);
  color: var(--kts-accent);
}

.arc-vision-split__title {
  font-family: var(--kts-font-heading);
  font-size: 1.75rem;
  font-weight: 400;
  margin-bottom: var(--kts-space-md);
}

.arc-vision-split__text {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--kts-dark-gray);
}

/* --- "Why Us" Icons Grid --- */
.arc-why-v2 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-lg);
}

.arc-why-v2__item {
  text-align: center;
  padding: var(--kts-space-xl);
}

.arc-why-v2__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--kts-space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(230, 57, 70, 0.08);
  color: var(--kts-accent);
}

.arc-why-v2__title {
  font-family: var(--kts-font-heading);
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: var(--kts-space-xs);
}

.arc-why-v2__desc {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--kts-dark-gray);
}

/* --- Service Detail V2 (sub-pages) --- */
.arc-service-v2-intro {
  max-width: 720px;
}

.arc-service-v2-intro__lead {
  font-family: var(--kts-font-heading);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 400;
  line-height: 1.7;
  color: var(--kts-dark-gray);
}

.arc-service-v2-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--kts-space-lg);
}

.arc-service-v2-feature {
  padding: var(--kts-space-xl);
  border: 1px solid var(--kts-light-gray);
  background: var(--kts-white);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.arc-service-v2-feature:hover {
  border-color: var(--kts-accent);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.arc-service-v2-feature__icon {
  color: var(--kts-accent);
  margin-bottom: var(--kts-space-md);
}

.arc-service-v2-feature__title {
  font-family: var(--kts-font-heading);
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: var(--kts-space-xs);
}

.arc-service-v2-feature__text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--kts-dark-gray);
}

/* --- Breadcrumb SEO Links --- */
.arc-breadcrumb {
  font-size: 0.8125rem;
  color: var(--kts-mid-gray);
  margin-top: var(--kts-space-sm);
}

.arc-breadcrumb a {
  color: var(--kts-mid-gray);
  text-decoration: none;
  transition: color 0.3s;
}

.arc-breadcrumb a:hover {
  color: var(--kts-accent);
}

.arc-breadcrumb__sep {
  margin: 0 0.5rem;
  opacity: 0.5;
}

/* ==========================================================================
   REDESIGN 2026 — RESPONSIVE
   ========================================================================== */

@media (max-width: 1024px) {

  .arc-split,
  .arc-split--55-45,
  .arc-split--60-40,
  .arc-split--40-60 {
    grid-template-columns: 1fr;
    gap: var(--kts-space-xl);
  }

  .arc-split--reverse {
    direction: ltr;
  }

  .arc-split__media--offset {
    margin-top: 0;
  }

  .arc-card-v2-grid {
    grid-template-columns: 1fr;
  }

  .arc-stats-v2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .arc-stats-v2--overlap {
    margin-top: -40px;
  }

  .arc-blog-v2-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .arc-featured-article {
    grid-template-columns: 1fr;
  }

  .arc-featured-article__image {
    min-height: 280px;
  }

  .arc-vision-split {
    grid-template-columns: 1fr;
  }

  .arc-why-v2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .arc-service-v2-features {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .arc-hero-page {
    height: 55vh;
    min-height: 360px;
  }

  .arc-hero-page__content {
    padding: var(--kts-space-xl) var(--kts-space-md);
  }

  .arc-hero-page__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .arc-stats-v2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .arc-stats-v2--overlap {
    margin-top: -30px;
    padding: 0 var(--kts-space-md);
  }

  .arc-stats-v2__item {
    padding: var(--kts-space-md) var(--kts-space-sm);
  }

  .arc-process__step {
    grid-template-columns: 50px 1fr;
    gap: var(--kts-space-md);
  }

  .arc-process__number {
    font-size: 1.75rem;
  }

  .arc-blog-v2-grid {
    grid-template-columns: 1fr;
  }

  .arc-blog-v2-card__image {
    height: 200px;
  }

  .arc-why-v2 {
    grid-template-columns: 1fr;
  }

  .arc-service-v2-features {
    grid-template-columns: 1fr;
  }

  .arc-vision-split__panel {
    padding: var(--kts-space-xl) var(--kts-space-lg);
  }
}

@media (max-width: 768px) {
  .arc-contact-form__row {
    grid-template-columns: 1fr;
  }

  .arc-service-detail-row {
    gap: 2rem;
  }

  .arc-service-detail-img {
    height: 300px;
  }
}

/* ==========================================================================
   RESPONSIVE — TABLET (≤ 1024px)
   ========================================================================== */

/* ==========================================================================
   UTILITIES & ABOUT PAGE SPECIFIC
   ========================================================================== */

.arc-mb-2xl {
  margin-bottom: var(--kts-space-2xl) !important;
}

.arc-mt-xl {
  margin-top: var(--kts-space-xl) !important;
}

.arc-mt-2xl {
  margin-top: var(--kts-space-2xl) !important;
}

.arc-mt-1-5 {
  margin-top: 1.5rem !important;
}

.arc-text-center {
  text-align: center !important;
}

.arc-text-white {
  color: var(--kts-white) !important;
}

.arc-bg-white {
  background: var(--kts-white) !important;
}

.arc-flex-col-center {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.arc-grid-4-cols {
  grid-template-columns: repeat(4, 1fr) !important;
}

.arc-factory-img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 4px;
}

.arc-factory-heading {
  font-family: var(--kts-font-heading);
  font-size: 2rem;
  margin-bottom: 1rem;
  font-weight: 400;
}

.arc-img-darken {
  filter: brightness(0.6);
}

.arc-btn--solid-accent {
  background: var(--kts-accent) !important;
  border-color: var(--kts-accent) !important;
  color: var(--kts-white) !important;
}

.arc-btn--solid-accent:hover {
  background: var(--kts-white) !important;
  border-color: var(--kts-white) !important;
  color: var(--kts-black) !important;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.kts-footer {
  background: var(--kts-black);
  color: var(--kts-white);
  padding: var(--kts-space-3xl) 0 0;
}

.kts-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--kts-space-xl);
}

.kts-footer__brand {
  font-family: var(--kts-font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--kts-space-md);
  letter-spacing: -0.02em;
}

.kts-footer__desc {
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

.kts-footer__heading {
  font-family: var(--kts-font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--kts-space-lg);
  color: var(--kts-white);
}

.kts-footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.kts-footer__link {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.2s var(--kts-ease);
  cursor: pointer;
}

.kts-footer__link:hover {
  color: var(--kts-accent);
}

.kts-footer__newsletter-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--kts-space-md);
}

.kts-footer__newsletter-form {
  display: flex;
  gap: 0;
}

.kts-footer__newsletter-input {
  flex: 1;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-right: none;
  color: var(--kts-white);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}

.kts-footer__newsletter-input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.kts-footer__newsletter-input:focus {
  border-color: var(--kts-accent);
}

.kts-footer__newsletter-btn {
  padding: 0.75rem 1rem;
  background: var(--kts-accent);
  border: 1px solid var(--kts-accent);
  color: var(--kts-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s var(--kts-ease), transform 0.2s;
}

.kts-footer__newsletter-btn:hover {
  background: #c0392b;
  transform: translateX(2px);
}

.kts-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--kts-space-lg) 0;
  margin-top: var(--kts-space-3xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.kts-footer__copyright {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

.kts-footer__social {
  display: flex;
  gap: var(--kts-space-md);
}

.kts-footer__social-link {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  transition: color 0.2s var(--kts-ease);
  cursor: pointer;
}

.kts-footer__social-link:hover {
  color: var(--kts-accent);
}

@media (max-width: 1024px) {

  /* Collapse 3-col grid to 2-col: brand | right */
  .kts-header {
    grid-template-columns: 1fr auto;
    padding: 0 1.5rem;
  }

  .kts-header__nav {
    display: none;
  }

  .kts-hamburger {
    display: flex;
  }

  .kts-social-sidebar {
    display: none;
  }

  .kts-header__cta {
    display: none;
  }

  .arc-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .arc-hero__media {
    height: 50vh;
  }

  .arc-hero__content {
    padding: var(--kts-space-xl);
  }

  .arc-about {
    grid-template-columns: 1fr;
    gap: var(--kts-space-xl);
  }

  .arc-about__content {
    padding-right: 0;
  }

  .arc-services {
    grid-template-columns: 1fr 1fr;
  }

  .arc-services__card {
    border-bottom: 1px solid var(--kts-light-gray);
  }

  .arc-services__card:nth-child(2) {
    border-right: none;
  }

  /* Show accordion toggle on tablet */
  .arc-services__toggle {
    display: flex;
  }

  /* Body hidden by default on tablet */
  .arc-services__body {
    display: none;
  }

  /* Body visible when card is open */
  .arc-services__card[data-open] .arc-services__body {
    display: flex;
  }

  /* Hover doesn't work on mobile — disable hover bg change on touch devices */
  @media (hover: none) {
    .arc-services__card:hover {
      background: var(--kts-white);
    }

    .arc-services__card:hover .arc-services__name,
    .arc-services__card:hover .arc-services__desc,
    .arc-services__card:hover .arc-services__number {
      color: inherit;
    }
  }

  .arc-works__grid {
    grid-template-columns: 1fr 1fr;
  }

  .arc-works__item--wide {
    grid-column: span 1;
  }

  .arc-why__grid {
    grid-template-columns: 1fr 1fr;
  }

  .arc-quote__inner {
    grid-template-columns: 1fr;
    gap: var(--kts-space-xl);
  }

  .arc-partners__header {
    grid-template-columns: 1fr;
  }

  .arc-partners__logos {
    grid-template-columns: repeat(3, 1fr);
  }

  .arc-studio__grid {
    grid-template-columns: 1fr 1fr;
  }

  .arc-news__grid {
    grid-template-columns: 1fr 1fr;
  }

  .kts-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--kts-space-xl);
  }

  .arc-grid-3 {
    grid-template-columns: 1fr 1fr;
  }

  .arc-grid-4 {
    grid-template-columns: 1fr 1fr;
  }

  .arc-posts-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ==========================================================================
   RESPONSIVE — MOBILE (≤ 768px)
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --kts-space-4xl: 3rem;
    --kts-space-3xl: 2rem;
  }

  .arc-container {
    padding-left: var(--kts-space-md);
    padding-right: var(--kts-space-md);
  }

  /* Responsive footer */
  .kts-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--kts-space-xl);
  }

  .kts-footer__bottom {
    flex-direction: column;
    gap: var(--kts-space-sm);
    text-align: center;
  }

  .arc-page-hero-image {
    height: 35vh;
  }

  .arc-hero__media {
    height: 40vh;
  }

  .arc-hero__content {
    padding: var(--kts-space-lg);
  }

  .arc-hero__title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  /* Fix: hero nav no longer overlaps "VỀ CHÚNG TÔI" text on mobile */
  .arc-hero__nav {
    position: static;
    margin-top: var(--kts-space-lg);
    justify-content: flex-start;
  }

  .arc-hero__info-box {
    display: none;
  }

  /* Hide desktop dropdown on mobile */
  .kts-header__dropdown {
    display: none;
  }

  /* Compact service cards on mobile */
  .arc-services {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .arc-services__card {
    padding: var(--kts-space-md);
    position: relative;
  }

  .arc-services__icon {
    width: 40px;
    height: 40px;
  }

  .arc-services__icon svg {
    width: 18px;
    height: 18px;
  }

  .arc-services__name {
    font-size: 1.125rem;
  }

  .arc-services__number {
    font-size: 0.625rem;
  }

  .arc-services__toggle {
    width: 28px;
    height: 28px;
    top: var(--kts-space-sm);
    right: var(--kts-space-sm);
  }

  .arc-about__visual {
    grid-template-columns: 1fr;
  }

  .arc-about__image--offset {
    margin-top: 0;
  }

  .arc-about__stats {
    position: relative;
    bottom: auto;
    right: auto;
    margin-top: var(--kts-space-md);
  }

  /* Stacked about — mobile */
  .arc-about__visual--stacked {
    height: auto;
    min-height: auto;
    display: flex;
    flex-direction: column;
    gap: var(--kts-space-md);
  }

  .arc-about__image--primary,
  .arc-about__image--secondary {
    position: relative;
    top: auto;
    right: auto;
    left: auto;
    bottom: auto;
    width: 100%;
    height: 220px;
    border: none;
  }

  .arc-about__image--tertiary {
    display: none;
  }

  .arc-about__float-stats {
    position: relative;
    right: auto;
    bottom: auto;
    justify-content: center;
  }

  .arc-about__deco-line,
  .arc-about__deco-dot {
    display: none;
  }

  .arc-about--dynamic .arc-about__content {
    padding-right: 0;
  }

  .arc-awards__logos {
    gap: var(--kts-space-lg);
    justify-content: center;
  }

  .arc-services {
    grid-template-columns: 1fr;
  }

  .arc-services__card {
    border-right: none;
    border-bottom: 1px solid var(--kts-light-gray);
  }

  .arc-why__grid {
    grid-template-columns: 1fr;
  }

  .arc-quote__inner {
    grid-template-columns: 1fr;
  }

  .arc-quote__form-row {
    grid-template-columns: 1fr;
  }

  .arc-quote__highlight {
    flex-direction: column;
    gap: var(--kts-space-sm);
  }

  .arc-works__grid {
    grid-template-columns: 1fr;
  }

  .arc-works__item--tall {
    grid-row: span 1;
  }

  .arc-works__item-image {
    min-height: 250px;
  }

  .arc-partners__logos {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--kts-space-lg);
  }

  .arc-studio__grid {
    grid-template-columns: 1fr;
  }

  .arc-studio__item--wide {
    grid-column: span 1;
  }

  .arc-news__grid {
    grid-template-columns: 1fr;
  }

  .kts-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--kts-space-lg);
  }

  .kts-footer__bottom {
    flex-direction: column;
    gap: var(--kts-space-sm);
    text-align: center;
  }

  .arc-grid-2,
  .arc-grid-3,
  .arc-grid-4 {
    grid-template-columns: 1fr;
  }

  .arc-grid-asymmetric,
  .arc-grid-asymmetric--reverse {
    grid-template-columns: 1fr;
  }

  .arc-posts-grid {
    grid-template-columns: 1fr;
  }

  /* CTA buttons touch-friendly but compact */
  .arc-cta__button,
  .arc-404__button {
    min-height: 48px;
    min-width: 48px;
    padding: 0.875rem 1.75rem;
  }

  .kts-header__cta {
    padding: 0.5rem 1rem;
    font-size: 0.6875rem;
    min-height: 0;
    min-width: 0;
  }

  .kts-header__logo {
    font-size: 1.2rem;
  }

  .kts-header {
    padding: 0.75rem 1rem;
  }

  .arc-filter-tabs {
    gap: var(--kts-space-sm);
  }

  .arc-filter-tab {
    padding: var(--kts-space-xs) var(--kts-space-sm);
  }

  .arc-page-header {
    padding-top: calc(var(--kts-space-3xl) + 60px);
  }
}

/* ==========================================================================
   WORDPRESS BLOCK OVERRIDES
   ========================================================================== */

.wp-block-post-content {
  max-width: var(--kts-content-width);
  margin-left: auto;
  margin-right: auto;
}

.wp-site-blocks {
  overflow-x: hidden;
}

.wp-block-group.alignfull {
  max-width: none;
}

.wp-block-separator {
  border-color: var(--kts-light-gray);
}

.wp-block-image img {
  height: auto;
}

.kts-front-page .wp-site-blocks>*+* {
  margin-block-start: 0;
}

/* ==========================================================================
   FLOATING SIDEBAR WIDGET (Theme Toggle + Scroll to Top)
   ========================================================================== */

.kts-fab {
  position: fixed;
  left: 24px;
  bottom: 50%;
  transform: translateY(50%);
  z-index: 9990;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-radius: 48px;
  padding: 16px 10px;
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08), 0 1px 4px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.06);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--kts-ease), transform 0.4s var(--kts-ease);
}

.kts-fab.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* --- Theme Toggle --- */
.kts-fab__toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.kts-fab__label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--kts-font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--kts-mid-gray);
  -webkit-user-select: none;
  user-select: none;
  transition: color 0.3s ease;
}

.kts-fab__label--dark {
  color: var(--kts-dark-gray);
}

[data-theme="dark"] .kts-fab__label--dark {
  color: var(--kts-mid-gray);
}

[data-theme="dark"] .kts-fab__label--light {
  color: var(--kts-dark-gray);
}

.kts-fab__switch {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--kts-light-gray);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
  position: relative;
  color: var(--kts-dark-gray);
}

.kts-fab__switch:hover {
  background: var(--kts-off-white);
  border-color: var(--kts-accent);
  transform: scale(1.1);
}

.kts-fab__icon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.kts-fab__icon--sun {
  opacity: 1;
  transform: rotate(0deg);
}

.kts-fab__icon--moon {
  opacity: 0;
  transform: rotate(-90deg);
}

[data-theme="dark"] .kts-fab__icon--sun {
  opacity: 0;
  transform: rotate(90deg);
}

[data-theme="dark"] .kts-fab__icon--moon {
  opacity: 1;
  transform: rotate(0deg);
}

/* --- Divider --- */
.kts-fab__divider {
  width: 1px;
  height: 24px;
  background: var(--kts-light-gray);
  margin: 12px 0;
  transition: background 0.3s ease;
}

/* --- Scroll to Top --- */
.kts-fab__scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--kts-dark-gray);
  transition: color 0.3s ease;
}

.kts-fab__scroll:hover {
  color: var(--kts-accent);
}

.kts-fab__scroll-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--kts-font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  -webkit-user-select: none;
  user-select: none;
}

.kts-fab__scroll-line {
  display: block;
  width: 1px;
  height: 28px;
  background: currentColor;
  position: relative;
  transition: height 0.3s ease;
}

.kts-fab__scroll:hover .kts-fab__scroll-line {
  height: 40px;
}

/* --- Dark theme widget overrides --- */
[data-theme="dark"] .kts-fab {
  background: rgba(30, 30, 30, 0.92);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .kts-fab__switch {
  border-color: rgba(255, 255, 255, 0.15);
  color: #E0E0E0;
}

[data-theme="dark"] .kts-fab__switch:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--kts-accent);
}

[data-theme="dark"] .kts-fab__divider {
  background: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .kts-fab__scroll {
  color: #E0E0E0;
}

/* --- Mobile: smaller, bottom-left compact --- */
@media (max-width: 768px) {
  .kts-fab {
    left: 8px;
    bottom: 12px;
    transform: none;
    padding: 6px 5px;
    border-radius: 24px;
    gap: 4px;
  }

  .kts-fab__label {
    font-size: 0.4rem;
    letter-spacing: 0.06em;
  }

  .kts-fab__switch {
    width: 22px;
    height: 22px;
  }

  .kts-fab__icon svg {
    width: 12px;
    height: 12px;
  }

  .kts-fab__divider {
    width: 12px;
    margin: 2px 0;
  }

  .kts-fab__scroll-text {
    font-size: 0.4rem;
    letter-spacing: 0.06em;
  }

  .kts-fab__scroll-line {
    height: 14px;
  }
}

/* ==========================================================================
   DARK THEME — Color System Override
   ========================================================================== */

[data-theme="dark"] {
  --kts-white: #141414;
  --kts-off-white: #1A1A1A;
  --kts-light-gray: #2A2A2A;
  --kts-mid-gray: #888888;
  --kts-dark-gray: #E0E0E0;
  --kts-black: #F5F5F5;
}

/* --- Body & global transitions --- */
body {
  transition: background-color 0.5s ease, color 0.5s ease;
}

[data-theme="dark"] body,
[data-theme="dark"] .wp-site-blocks {
  background-color: #111111;
  color: #E0E0E0;
}

/* --- Header dark mode --- */
[data-theme="dark"] .kts-header {
  background: rgba(17, 17, 17, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .kts-header.scrolled {
  background: rgba(17, 17, 17, 0.98);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .kts-header__logo-text,
[data-theme="dark"] .kts-header__nav-label,
[data-theme="dark"] .kts-header__nav-number {
  color: #E0E0E0;
}

[data-theme="dark"] .kts-header__nav-item:hover .kts-header__nav-label {
  color: var(--kts-accent);
}

[data-theme="dark"] .kts-header__dropdown {
  background: #1E1E1E;
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .kts-header__dropdown-item {
  color: #C0C0C0;
}

[data-theme="dark"] .kts-header__dropdown-item:hover {
  color: var(--kts-accent);
  background: rgba(255, 255, 255, 0.04);
}

[data-theme="dark"] .kts-header__cta {
  border-color: rgba(255, 255, 255, 0.2);
  color: #E0E0E0;
}

/* --- Mobile menu dark mode --- */
[data-theme="dark"] .kts-mobile-menu {
  background: #111111;
}

[data-theme="dark"] .kts-mobile-menu__link {
  color: #E0E0E0;
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

/* --- Section backgrounds --- */
[data-theme="dark"] .arc-section {
  background-color: #111111;
}

[data-theme="dark"] .arc-section--alt {
  background-color: #161616;
}

/* --- Typography colors --- */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: #F0F0F0;
}

[data-theme="dark"] p,
[data-theme="dark"] li,
[data-theme="dark"] span,
[data-theme="dark"] td {
  color: #C8C8C8;
}

[data-theme="dark"] em {
  color: #F0F0F0;
}

[data-theme="dark"] a {
  color: #D0D0D0;
}

[data-theme="dark"] a:hover {
  color: var(--kts-accent);
}

/* --- Hero page overlay — darker for dark mode --- */
[data-theme="dark"] .arc-hero-page__overlay {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.65) 0%, rgba(0, 0, 0, 0.85) 100%);
}

/* --- Cards & boxes --- */
[data-theme="dark"] .arc-card-v2 {
  background: #1A1A1A;
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .arc-card-v2__body {
  background: #1A1A1A;
}

[data-theme="dark"] .arc-card-v2__title,
[data-theme="dark"] .arc-card-v2__desc {
  color: #C8C8C8;
}

[data-theme="dark"] .arc-card-v2__link {
  color: var(--kts-accent);
}

[data-theme="dark"] .arc-service-card {
  background: #1A1A1A;
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .arc-bg-white {
  background: #1A1A1A !important;
}

/* --- Stats bar --- */
[data-theme="dark"] .arc-stats-v2__item {
  background: #1A1A1A;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .arc-stats-v2__label {
  color: #999;
}

/* --- Vision split --- */
[data-theme="dark"] .arc-vision-split__panel--dark {
  background: #0A0A0A;
}

[data-theme="dark"] .arc-vision-split__panel--light {
  background: #1A1A1A;
  color: #E0E0E0;
}

[data-theme="dark"] .arc-vision-split__title {
  color: #F0F0F0;
}

[data-theme="dark"] .arc-vision-split__text {
  color: #C0C0C0;
}

/* --- Process steps --- */
[data-theme="dark"] .arc-process__step {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .arc-process__title,
[data-theme="dark"] .arc-process__number {
  color: #F0F0F0;
}

[data-theme="dark"] .arc-process__desc {
  color: #B0B0B0;
}

/* --- Why V2 items --- */
[data-theme="dark"] .arc-why-v2__item {
  border-color: rgba(255, 255, 255, 0.08);
}

/* --- Service V2 features --- */
[data-theme="dark"] .arc-service-v2-feature {
  background: #1A1A1A;
  border-color: rgba(255, 255, 255, 0.06);
}

/* --- Blog V2 cards --- */
[data-theme="dark"] .arc-blog-v2-card {
  background: #1A1A1A;
}

[data-theme="dark"] .arc-blog-v2-card__title a {
  color: #F0F0F0;
}

[data-theme="dark"] .arc-blog-v2-card__excerpt {
  color: #B0B0B0;
}

/* --- Feature list --- */
[data-theme="dark"] .arc-feature-list__item {
  color: #C8C8C8;
}

[data-theme="dark"] .arc-feature-list__item svg {
  color: var(--kts-accent);
}

/* --- Split section --- */
[data-theme="dark"] .arc-split__label {
  color: var(--kts-accent);
}

[data-theme="dark"] .arc-split__heading {
  color: #F0F0F0;
}

[data-theme="dark"] .arc-split__text {
  color: #C0C0C0;
}

/* --- Footer dark mode --- */
[data-theme="dark"] .kts-footer {
  background: #0A0A0A;
}

[data-theme="dark"] .kts-footer__brand {
  color: #F0F0F0;
}

[data-theme="dark"] .kts-footer__bottom {
  border-top-color: rgba(255, 255, 255, 0.08);
}

/* --- CTA section --- */
[data-theme="dark"] .arc-cta {
  background: #0D0D0D;
}

/* --- Custom cursor --- */
[data-theme="dark"] .kts-cursor {
  background: #E0E0E0;
}

[data-theme="dark"] .kts-cursor-follower {
  border-color: #E0E0E0;
}

/* --- Homepage specific sections --- */
[data-theme="dark"] .kts-about,
[data-theme="dark"] .kts-services,
[data-theme="dark"] .kts-projects,
[data-theme="dark"] .kts-hero {
  background-color: #111111;
}

[data-theme="dark"] .kts-service-card {
  background: #1A1A1A;
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .kts-project-card {
  background: #1A1A1A;
}

/* --- Form inputs --- */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background: #1E1E1E;
  border-color: rgba(255, 255, 255, 0.12);
  color: #E0E0E0;
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: #666;
}

/* --- Breadcrumb page header --- */
[data-theme="dark"] .arc-page-header {
  background: #111111;
}

/* --- WP blocks --- */
[data-theme="dark"] .wp-block-separator {
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .wp-block-quote {
  border-left-color: var(--kts-accent);
  color: #C8C8C8;
}

/* --- Hamburger dark mode --- */
[data-theme="dark"] .kts-hamburger__line {
  background: #E0E0E0;
}

/* --- Quote / Báo giá section (always dark background) --- */
[data-theme="dark"] .arc-quote {
  background: #0D0D0D;
}

[data-theme="dark"] .arc-quote__content h2 {
  color: #F0F0F0;
}

[data-theme="dark"] .arc-quote__content p {
  color: rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .arc-quote__highlight-item {
  color: rgba(255, 255, 255, 0.8);
}

[data-theme="dark"] .arc-quote__form {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .arc-quote__input,
[data-theme="dark"] .arc-quote__select,
[data-theme="dark"] .arc-quote__textarea {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: #F0F0F0;
}

[data-theme="dark"] .arc-quote__input::placeholder,
[data-theme="dark"] .arc-quote__textarea::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

[data-theme="dark"] .arc-quote__select option {
  background: #0D0D0D;
  color: #F0F0F0;
}

/* --- News / Knowledge cards dark mode --- */
[data-theme="dark"] .arc-news__card {
  background: #1A1A1A;
}

[data-theme="dark"] .arc-news__card-content {
  background: #1A1A1A;
}

[data-theme="dark"] .arc-news__card-title a {
  color: #F0F0F0;
}

[data-theme="dark"] .arc-news__card-excerpt {
  color: #B0B0B0;
}

[data-theme="dark"] .arc-news__card-date {
  color: #888;
}

/* --- About section dark mode --- */
[data-theme="dark"] .arc-about__text {
  color: #C0C0C0;
}

/* --- Services cards dark mode --- */
[data-theme="dark"] .arc-services__card {
  background: #141414;
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .arc-services__card:hover {
  background: #000000;
}

[data-theme="dark"] .arc-services__card:hover .arc-services__number,
[data-theme="dark"] .arc-services__card:hover .arc-services__name,
[data-theme="dark"] .arc-services__card:hover .arc-services__desc,
[data-theme="dark"] .arc-services__card:hover .arc-services__link {
  color: #FFFFFF;
}

[data-theme="dark"] .arc-services__desc {
  color: #B0B0B0;
}

/* --- Why section dark mode --- */
[data-theme="dark"] .arc-why__card {
  background: #1A1A1A;
  border-color: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .arc-why__card-desc {
  color: #B0B0B0;
}

/* --- Awards logos dark mode --- */
[data-theme="dark"] .arc-awards__logo-item {
  color: #888;
  border-color: rgba(255, 255, 255, 0.08);
}