/* ==========================================================================
   TABBU HOME / LUXURY TILES & INTERIOR THEME
   Inspired by Luxury Architectural Design
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;600;700;800&family=Montserrat:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

:root {
  --color-bg-dark: #1a1b1d;
  --color-bg-panel: #222326;
  --color-bg-card: #26282c;
  --color-gold: #c5a880;
  --color-gold-hover: #dfc199;
  --color-gold-dark: #8e724b;
  --color-text-main: #ffffff;
  --color-text-muted: #b2b7be;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-gold: rgba(197, 168, 128, 0.4);
  --font-heading: 'Montserrat', sans-serif;
  --font-serif: 'Cinzel', serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-alt: 'Montserrat', sans-serif;
  --left-panel-width: 170px;
  --transition-smooth: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-dark);
  color: var(--color-text-muted);
  line-height: 1.8;
  font-size: 15.5px;
  font-weight: 400;
  letter-spacing: 0.1px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

ul {
  list-style: none;
}

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

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 100;
  padding: 25px 60px 25px calc(var(--left-panel-width) + 40px);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  transition: var(--transition-smooth);
  background: linear-gradient(180deg, rgba(20,20,22,0.65) 0%, rgba(20,20,22,0) 100%);
}

.header-brand {
  display: none;
  align-items: center;
  margin-right: auto;
}

.header-brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-brand-icon {
  width: 32px;
  height: 32px;
}

.header-brand-text {
  font-family: var(--font-heading);
  font-size: 16px;
  letter-spacing: 4px;
  color: var(--color-gold);
  font-weight: 500;
}

.site-header.scrolled {
  position: fixed;
  left: 0;
  width: 100%;
  background: rgba(26, 27, 29, 0.96);
  backdrop-filter: blur(15px);
  padding: 8px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.site-header.scrolled .header-brand {
  display: flex;
  flex-shrink: 0;
}

/* Main Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-alt);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #ffffff;
  padding: 8px 4px;
  display: flex;
  align-items: center;
  gap: 5px;
  position: relative;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-gold);
  transition: var(--transition-smooth);
}

.nav-link:hover, .nav-link.active {
  color: var(--color-gold);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-link svg {
  width: 10px;
  height: 10px;
  transition: transform 0.3s ease;
}

.nav-item:hover > .nav-link svg {
  transform: rotate(180deg);
}

/* Dropdown Submenu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 210px;
  background: #252629;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-top: 2px solid var(--color-gold);
  box-shadow: 0 15px 35px rgba(0,0,0,0.5);
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: var(--transition-smooth);
  z-index: 110;
}

.dropdown-menu.dropdown-scroll {
  max-height: 380px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-gold) #1a1a1c;
}

.dropdown-menu.dropdown-scroll::-webkit-scrollbar {
  width: 5px;
}

.dropdown-menu.dropdown-scroll::-webkit-scrollbar-thumb {
  background: var(--color-gold);
  border-radius: 4px;
}

.dropdown-menu.dropdown-scroll::-webkit-scrollbar-track {
  background: #1e1f21;
}

.nav-item:hover > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  position: relative;
}

.dropdown-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  font-family: var(--font-alt);
  font-size: 13px;
  color: #cfd2d6;
  letter-spacing: 1px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  transition: var(--transition-smooth);
}

.dropdown-link:hover {
  background: rgba(197, 168, 128, 0.1);
  color: var(--color-gold);
  padding-left: 25px;
}

.dropdown-link svg {
  width: 10px;
  height: 10px;
}

/* Nested 2nd-level dropdown */
.dropdown-submenu {
  position: absolute;
  top: -10px;
  left: 100%;
  min-width: 200px;
  background: #222325;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 2px solid var(--color-gold);
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: var(--transition-smooth);
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
}

.dropdown-item:hover > .dropdown-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* Header Action Icons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: 35px;
}

.btn-search {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-search:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: scale(1.05);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 5px;
}

/* ==========================================================================
   LEFT SIDEBAR PANEL (Logo, Social Icons, Slider Arrows - ONLY IN HERO BANNER)
   ========================================================================== */
.left-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--left-panel-width);
  height: 100%;
  background: var(--color-bg-panel);
  border-right: 1px solid rgba(255, 255, 255, 0.05);
  z-index: 25;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 30px 15px 35px 15px;
  box-shadow: 5px 0 25px rgba(0, 0, 0, 0.35);
}

/* Logo Block */
.brand-logo-wrapper {
  text-align: center;
  width: 100%;
}

.brand-logo-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.brand-custom-logo {
  max-height: 120px;
  width: auto;
  max-width: 145px;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.45));
  margin-bottom: 8px;
  transition: var(--transition-smooth);
}

.brand-custom-logo:hover {
  transform: scale(1.04);
}

.header-custom-logo {
  max-height: 65px;
  width: auto;
  max-width: 210px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.45));
  transition: var(--transition-smooth);
}

.brand-icon-svg {
  width: 54px;
  height: 54px;
  filter: drop-shadow(0 2px 8px rgba(197, 168, 128, 0.3));
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 5px;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-top: 2px;
}

.brand-slogan {
  font-family: 'Cinzel', serif;
  font-size: 10.5px;
  letter-spacing: 1.5px;
  color: #b2b7be;
  font-style: italic;
  text-transform: none;
  line-height: 1.4;
  margin-top: 4px;
}

/* Social Left Bar */
.social-left-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
  width: 100%;
  margin: auto 0;
}

.social-left-bar::before {
  content: '';
  width: 1px;
  height: 50px;
  background: rgba(255, 255, 255, 0.15);
  margin-bottom: 8px;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #8c8f94;
  transition: var(--transition-smooth);
}

.social-link svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
}

.social-link:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: rotate(360deg) scale(1.1);
  box-shadow: 0 0 15px rgba(197, 168, 128, 0.25);
}

/* Slider Controls in Left Panel */
.slider-nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.slider-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: transparent;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.slider-btn svg {
  width: 14px;
  height: 14px;
}

.slider-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: rgba(197, 168, 128, 0.1);
  transform: scale(1.08);
}

/* ==========================================================================
   HERO BANNER & SLIDER
   ========================================================================== */
.hero-slider-section {
  position: relative;
  min-height: 100vh;
  margin-left: 0;
  width: 100%;
  overflow: hidden;
  background: #121314;
}

.slider-container {
  position: relative;
  width: 100%;
  height: 100vh;
}

.slide-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), transform 6s ease-out;
  transform: scale(1.08);
  background-size: cover;
  background-position: center;
}

.slide-item.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

/* Dark Overlays */
.slide-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.55) 100%),
              linear-gradient(180deg, rgba(20,20,22,0.4) 0%, rgba(20,20,22,0.65) 100%);
}

/* Watermark Typography (Matches user screenshot: "UNI TILES / TABBU HOME" running across) */
.hero-watermark {
  position: absolute;
  top: 18%;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-around;
  pointer-events: none;
  z-index: 10;
  user-select: none;
  overflow: hidden;
}

.watermark-text {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 68px);
  font-weight: 500;
  letter-spacing: 8px;
  color: rgba(255, 255, 255, 0.22);
  text-transform: uppercase;
  white-space: nowrap;
  text-shadow: 0 0 20px rgba(255, 255, 255, 0.15);
  animation: watermarkPulse 6s ease-in-out infinite alternate;
}

@keyframes watermarkPulse {
  0% { opacity: 0.15; transform: translateY(0); }
  100% { opacity: 0.35; transform: translateY(-4px); }
}

/* Luxury Geometric Corner Frames */
.hero-frame-corner {
  position: absolute;
  width: 120px;
  height: 120px;
  pointer-events: none;
  z-index: 12;
}

.corner-top-right {
  top: 40px;
  right: 40px;
  border-top: 1px solid var(--color-border-gold);
  border-right: 1px solid var(--color-border-gold);
}

.corner-bottom-right {
  bottom: 40px;
  right: 40px;
  border-bottom: 1px solid var(--color-border-gold);
  border-right: 1px solid var(--color-border-gold);
}

.corner-bottom-left {
  bottom: 40px;
  left: 40px;
  border-bottom: 1px solid var(--color-border-gold);
  border-left: 1px solid var(--color-border-gold);
}

/* Hero Caption Details */
.hero-caption-box {
  position: absolute;
  bottom: 70px;
  right: 70px;
  z-index: 15;
  text-align: right;
  max-width: 600px;
}

.caption-subtitle {
  font-family: var(--font-alt);
  font-size: 13px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 10px;
  font-weight: 600;
}

.caption-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 46px);
  color: #ffffff;
  font-weight: 400;
  letter-spacing: 6px;
  text-transform: uppercase;
  line-height: 1.25;
  margin-bottom: 18px;
}

.caption-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 32px;
  border: 1px solid var(--color-gold);
  color: #ffffff;
  font-family: var(--font-alt);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(5px);
  transition: var(--transition-smooth);
}

.caption-btn:hover {
  background: var(--color-gold);
  color: #121314;
  box-shadow: 0 0 25px rgba(197, 168, 128, 0.4);
}

/* Slider Pagination Indicators */
.slider-pagination {
  position: absolute;
  bottom: 45px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 15;
}

.page-dot {
  width: 35px;
  height: 3px;
  background: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.page-dot.active {
  background: var(--color-gold);
  width: 55px;
}

/* ==========================================================================
   CONTENT WRAPPER & SECTIONS (About, Products, Categories, Projects, Footer)
   ========================================================================== */
.content-wrapper {
  margin-left: 0;
  width: 100%;
  position: relative;
  background-color: var(--color-bg-dark);
}

.section-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 90px 40px;
}

.section-tag {
  font-family: var(--font-alt);
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--color-gold);
  text-transform: uppercase;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 12px;
}

.section-heading {
  font-family: var(--font-heading);
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #ffffff;
  margin-bottom: 25px;
  line-height: 1.35;
}

.divider-gold {
  width: 60px;
  height: 2px;
  background: var(--color-gold);
  margin-bottom: 35px;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  margin-bottom: 22px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #c5c9cf;
  font-weight: 400;
  letter-spacing: 0.15px;
}

.about-text strong {
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.about-text em {
  color: var(--color-gold-hover);
  font-style: italic;
  font-weight: 500;
}

/* Showroom Slider */
.about-slider-wrapper {
  position: relative;
  width: 100%;
}

.about-slider-box {
  position: relative;
  width: 100%;
  height: 420px;
  overflow: hidden;
  background: var(--color-bg-card);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.about-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, transform 1.2s ease;
  transform: scale(1.04);
}

.about-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.about-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Bottom Left Navigation Buttons */
.about-slider-nav {
  position: absolute;
  bottom: 25px;
  left: 25px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

.about-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(30, 30, 33, 0.45);
  backdrop-filter: blur(4px);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.about-nav-btn svg {
  width: 14px;
  height: 14px;
}

.about-nav-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: rgba(30, 30, 33, 0.85);
  transform: scale(1.08);
}

/* Bottom Right Badge */
.about-slider-badge {
  position: absolute;
  bottom: 0;
  right: 0;
  background: #252629;
  padding: 16px 30px;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-gold);
  z-index: 10;
  box-shadow: -5px -5px 20px rgba(0, 0, 0, 0.25);
}

/* Bottom Dot Indicators */
.about-slider-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.about-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.about-dot.active, .about-dot:hover {
  border-color: var(--color-gold);
  background: transparent;
  transform: scale(1.15);
  box-shadow: 0 0 6px rgba(197, 168, 128, 0.4);
}

/* ==========================================================================
   PROJECTS SECTION (DỰ ÁN)
   ========================================================================== */
.projects-section {
  padding-top: 50px;
  padding-bottom: 90px;
}

.projects-main-title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-gold);
  font-weight: 600;
  margin-bottom: 35px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.project-card {
  position: relative;
  background: var(--color-bg-card);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  cursor: pointer;
}

.project-img-wrapper {
  position: relative;
  width: 100%;
  height: 440px;
  overflow: hidden;
}

.project-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card:hover .project-img-wrapper img {
  transform: scale(1.08);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.15) 45%, rgba(15,16,18,0.9) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  text-align: center;
  padding: 40px 30px 30px 30px;
  transition: all 0.5s ease;
}

.project-card:hover .project-overlay {
  background: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.3) 40%, rgba(12,13,15,0.95) 100%);
}

.project-info-wrap {
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  transform: translateY(30px);
}

.project-card:hover .project-info-wrap {
  transform: translateY(0);
}

.project-category {
  font-family: var(--font-alt);
  font-size: 11px;
  letter-spacing: 5px;
  color: var(--color-gold);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 6px;
  display: block;
}

.project-name {
  font-family: var(--font-heading);
  font-size: 21px;
  letter-spacing: 6px;
  color: #ffffff;
  text-transform: uppercase;
  font-weight: 400;
  line-height: 1.3;
}

/* Horizontal white line expanding on hover */
.project-line {
  width: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.4);
  margin: 12px auto 10px auto;
  transition: width 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.project-card:hover .project-line {
  width: 100%;
}

/* Arrow sliding up below the line */
.project-arrow {
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1) 0.08s;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 24px;
}

.project-arrow svg {
  width: 26px;
  height: 26px;
  stroke-width: 1.5;
  transition: transform 0.3s ease;
}

.project-card:hover .project-arrow {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover .project-arrow svg {
  transform: translateX(5px);
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .project-img-wrapper {
    height: 320px;
  }
}

/* Category Grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
  margin-top: 40px;
}

.category-card {
  position: relative;
  height: 320px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  group: pointer;
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.category-card:hover img {
  transform: scale(1.1);
}

.category-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.1) 0%, rgba(15,16,18,0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 25px;
  transition: var(--transition-smooth);
}

.category-card:hover .category-overlay {
  background: linear-gradient(180deg, rgba(0,0,0,0.2) 0%, rgba(197,168,128,0.7) 100%);
}

.category-title {
  font-family: var(--font-heading);
  font-size: 20px;
  color: #fff;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.category-desc {
  font-size: 13px;
  color: #ccc;
  margin-top: 5px;
}

/* Footer */
.site-footer {
  background: #18191a;
  border-top: 1px solid var(--color-border);
  padding: 70px 40px 30px 40px;
  color: #9ba0a6;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  max-width: 1240px;
  margin: 0 auto;
}

.footer-col h4 {
  font-family: var(--font-heading);
  color: #ffffff;
  font-size: 16px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 25px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 2px;
  background: var(--color-gold);
}

.footer-col ul li {
  margin-bottom: 12px;
  font-size: 14px;
}

.footer-col ul li a:hover {
  color: var(--color-gold);
  padding-left: 5px;
}

.footer-bottom {
  max-width: 1240px;
  margin: 50px auto 0 auto;
  padding-top: 25px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

/* Search Modal */
.search-modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 16, 18, 0.95);
  backdrop-filter: blur(15px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-modal-box {
  width: 90%;
  max-width: 650px;
  position: relative;
}

.search-input {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--color-gold);
  padding: 15px 0;
  font-size: 26px;
  color: #ffffff;
  font-family: var(--font-heading);
  letter-spacing: 2px;
  outline: none;
}

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

.btn-close-search {
  position: absolute;
  top: -50px;
  right: 0;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 28px;
  cursor: pointer;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
/* ==========================================================================
   RESPONSIVE DESIGN (TABLETS & MOBILE OPTIMIZATIONS)
   Desktop layout is 100% preserved. Mobile layout is polished and luxury.
   ========================================================================== */
@media (max-width: 1199px) {
  :root {
    --left-panel-width: 120px;
  }
  .nav-menu {
    gap: 16px;
  }
  .nav-link {
    font-size: 12px;
    letter-spacing: 1.5px;
  }
  .brand-title {
    font-size: 14px;
    letter-spacing: 3px;
  }
}

@media (max-width: 991px) {
  :root {
    --left-panel-width: 0px;
  }

  /* 1. Hide Left Panel on Mobile & Free Up Screen Width */
  .left-panel {
    display: none !important;
  }

  /* 2. Top Header & Mobile Navbar */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    padding: 12px 20px;
    justify-content: space-between;
    background: rgba(20, 21, 24, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
    z-index: 1000;
  }

  .site-header.scrolled {
    padding: 10px 20px;
    background: rgba(16, 17, 19, 0.98);
  }

  .header-brand {
    display: flex !important;
    align-items: center;
    margin-right: auto;
  }

  .header-custom-logo {
    max-height: 42px;
    max-width: 140px;
    width: auto;
    object-fit: contain;
  }

  .header-brand-icon {
    width: 28px;
    height: 28px;
  }

  .header-brand-text {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 2px;
    color: #ffffff;
    display: inline-block;
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: 12px;
  }

  .btn-search {
    width: 36px;
    height: 36px;
    border-color: rgba(255, 255, 255, 0.2);
  }

  .mobile-menu-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(197, 168, 128, 0.35);
    border-radius: 8px;
    color: var(--color-gold);
    cursor: pointer;
    transition: var(--transition-smooth);
  }

  .mobile-menu-toggle:active {
    transform: scale(0.92);
    background: rgba(197, 168, 128, 0.15);
  }

  /* Mobile Slide-Down Menu Drawer */
  .nav-menu {
    position: fixed;
    top: 62px;
    left: 0;
    right: 0;
    width: 100%;
    max-height: calc(100vh - 62px);
    overflow-y: auto;
    background: #191a1d;
    border-bottom: 2px solid var(--color-gold);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.85);
    padding: 20px 24px 30px 24px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    z-index: 999;
  }

  .nav-menu.open {
    display: flex !important;
    animation: mobileMenuSlideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  .nav-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    width: 100%;
  }

  .nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    font-size: 13.5px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: #ffffff;
    text-transform: uppercase;
  }

  .nav-link.active,
  .nav-link:hover {
    color: var(--color-gold);
  }

  .nav-item.has-dropdown > .nav-link svg {
    transition: transform 0.3s ease;
  }

  .nav-item.open > .nav-link svg {
    transform: rotate(180deg);
  }

  .dropdown-menu {
    position: static !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    background: rgba(0, 0, 0, 0.25) !important;
    border: none !important;
    border-left: 2px solid var(--color-gold) !important;
    border-radius: 6px;
    box-shadow: none !important;
    padding: 6px 0 6px 12px !important;
    margin: 4px 0 12px 6px;
    display: none;
  }

  .nav-item.open .dropdown-menu {
    display: block !important;
  }

  .dropdown-link {
    padding: 9px 12px;
    font-size: 13px;
    color: #b2b7be;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  }

  .dropdown-link:hover {
    color: var(--color-gold);
    background: transparent;
    padding-left: 16px;
  }

  /* 3. Hero Slider on Mobile */
  .hero-slider-section {
    margin-left: 0 !important;
    width: 100% !important;
    height: 80vh !important;
    min-height: 520px !important;
    max-height: 640px !important;
    padding-top: 0 !important;
    position: relative !important;
  }

  .slider-container {
    height: 100% !important;
  }

  .slide-item {
    background-position: center center !important;
  }

  .slide-overlay {
    background: linear-gradient(180deg, rgba(20,20,22,0.45) 0%, rgba(20,20,22,0.15) 35%, rgba(15,16,18,0.75) 75%, rgba(15,16,18,0.96) 100%) !important;
  }

  .hero-watermark {
    display: none !important;
  }

  .hero-frame-corner {
    display: none !important;
  }

  .hero-caption-box {
    position: absolute !important;
    bottom: 35px !important;
    left: 20px !important;
    right: 20px !important;
    width: auto !important;
    max-width: 100% !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    padding: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    text-align: left !important;
    z-index: 15 !important;
  }

  .caption-subtitle {
    font-size: 11px !important;
    letter-spacing: 3px !important;
    color: var(--color-gold) !important;
    margin-bottom: 8px !important;
    font-weight: 600 !important;
    text-transform: uppercase !important;
    text-shadow: 0 2px 8px rgba(0,0,0,0.85) !important;
  }

  .caption-title {
    font-size: 22px !important;
    letter-spacing: 1.5px !important;
    color: #ffffff !important;
    line-height: 1.35 !important;
    margin-bottom: 18px !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    text-shadow: 0 3px 16px rgba(0,0,0,0.95) !important;
  }

  .caption-btn {
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
    width: auto !important;
    padding: 10px 22px !important;
    font-size: 11.5px !important;
    font-weight: 600 !important;
    letter-spacing: 2px !important;
    text-transform: uppercase !important;
    color: #ffffff !important;
    border: 1px solid var(--color-gold) !important;
    background: rgba(20, 21, 24, 0.45) !important;
    backdrop-filter: blur(6px) !important;
    -webkit-backdrop-filter: blur(6px) !important;
    border-radius: 4px !important;
    box-shadow: 0 4px 15px rgba(0,0,0,0.35) !important;
  }

  .slider-pagination {
    position: absolute !important;
    bottom: 12px !important;
    right: 20px !important;
    left: auto !important;
    transform: none !important;
    gap: 6px !important;
    z-index: 20 !important;
  }

  /* 4. Global Content Wrapper & General Sections */
  .content-wrapper {
    margin-left: 0 !important;
    width: 100% !important;
    overflow-x: hidden !important;
  }

  .section-container {
    padding: 45px 18px !important;
  }

  .section-tag,
  .categories-section-tag {
    font-size: 11px !important;
    letter-spacing: 3px !important;
  }

  .section-heading,
  .categories-section-heading {
    font-size: 22px !important;
    letter-spacing: 2px !important;
    line-height: 1.3 !important;
  }

  .divider-gold {
    width: 50px !important;
    height: 2px !important;
    margin: 12px 0 20px 0 !important;
  }

  /* 5. About / Showroom Section */
  .about-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: 24px !important;
  }

  .about-text p {
    font-size: 14.5px !important;
    line-height: 1.75 !important;
    margin-bottom: 14px !important;
  }

  .about-slider-box {
    height: 260px !important;
    border-radius: 10px !important;
  }

  /* 6. Categories Section */
  .categories-header-wrap {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 16px !important;
    margin-bottom: 22px !important;
  }

  .categories-nav-btns {
    align-self: flex-end !important;
  }

  .category-slider-card {
    height: 320px !important;
  }

  .category-card-title {
    font-size: 18px !important;
    letter-spacing: 2px !important;
  }

  /* 7. Projects Grid */
  .projects-grid {
    grid-template-columns: 1fr !important;
    gap: 22px !important;
  }

  .project-img-wrapper {
    height: 270px !important;
    border-radius: 10px !important;
  }

  .project-overlay {
    background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.4) 40%, rgba(15,16,18,0.95) 100%) !important;
    padding: 24px 20px 20px 20px !important;
  }

  .project-info-wrap {
    transform: translateY(0) !important;
  }

  .project-line {
    width: 60px !important;
  }

  .project-arrow {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }

  .project-name {
    font-size: 18px !important;
    letter-spacing: 3px !important;
  }

  /* 8. Collections Section on Mobile */
  .collection-showcase-section {
    padding: 30px 0 45px 0 !important;
  }

  .collection-header-wrap {
    padding: 0 16px !important;
    margin-bottom: 16px !important;
  }

  .collection-subtitle {
    font-size: 11px !important;
    letter-spacing: 2.5px !important;
    margin-bottom: 4px !important;
  }

  .collection-main-title {
    font-size: 22px !important;
    letter-spacing: 1.5px !important;
    margin-bottom: 12px !important;
    line-height: 1.25 !important;
  }

  .collection-category-tabs {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 8px !important;
    margin-top: 10px !important;
    padding: 2px 2px 10px 2px !important;
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
  }

  .collection-category-tabs::-webkit-scrollbar {
    display: none !important;
  }

  .collection-tab-btn {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
    font-size: 12px !important;
    padding: 8px 18px !important;
    border-radius: 20px !important;
    background: rgba(255, 255, 255, 0.06) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    color: #c0c4cc !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
  }

  .collection-tab-btn.active {
    background: var(--color-gold, #c5a880) !important;
    border-color: var(--color-gold, #c5a880) !important;
    color: #121315 !important;
    font-weight: 700 !important;
    box-shadow: 0 4px 14px rgba(197, 168, 128, 0.35) !important;
  }

  .collection-slider-viewport {
    height: 52vh !important;
    min-height: 300px !important;
    max-height: 440px !important;
    margin-top: 5px !important;
  }

  .collection-slide-item {
    width: 88% !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5) !important;
  }

  .collection-slide-item.prev-peek {
    left: calc(50% - 92%) !important;
    transform: scale(0.9) !important;
    opacity: 0.4 !important;
  }

  .collection-slide-item.next-peek {
    left: calc(50% + 4%) !important;
    transform: scale(0.9) !important;
    opacity: 0.4 !important;
  }

  .collection-nav-arrow {
    width: 38px !important;
    height: 38px !important;
    background: rgba(20, 21, 24, 0.85) !important;
    border-color: rgba(255, 255, 255, 0.25) !important;
  }

  .collection-nav-arrow svg {
    width: 18px !important;
    height: 18px !important;
  }

  .collection-nav-arrow.prev { left: 10px !important; }
  .collection-nav-arrow.next { right: 10px !important; }

  .collection-dots-bar {
    margin-top: 14px !important;
    gap: 6px !important;
  }

  .collection-dot {
    width: 8px !important;
    height: 8px !important;
  }

  .collection-dot.active {
    width: 22px !important;
    height: 8px !important;
    background: var(--color-gold, #c5a880) !important;
  }

  /* 9. Blog Grid */
  .blog-grid {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }

  /* 10. Consultation Form Box */
  .consultation-form-box {
    padding: 24px 18px !important;
    border-radius: 12px !important;
  }

  /* 10. Footer */
  .site-footer {
    padding: 45px 18px 25px 18px !important;
  }

  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 28px !important;
  }

  .footer-bottom {
    flex-direction: column !important;
    gap: 12px !important;
    text-align: center !important;
    margin-top: 30px !important;
    padding-top: 18px !important;
  }
}

@media (max-width: 576px) {
  .section-heading,
  .categories-section-heading {
    font-size: 20px !important;
    letter-spacing: 1.5px !important;
  }

  .hero-caption-box {
    bottom: 24px !important;
    left: 16px !important;
    right: 16px !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    box-shadow: none !important;
  }

  .caption-title {
    font-size: 19px !important;
    letter-spacing: 1px !important;
    margin-bottom: 14px !important;
  }

  .about-slider-box {
    height: 230px !important;
  }

  .project-img-wrapper {
    height: 240px !important;
  }
}

@keyframes mobileMenuSlideDown {
  0% {
    opacity: 0;
    transform: translateY(-12px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}