/* ==========================================================================
   SDTS - SHARON DESIGN TECHNOLOGY SOLUTIONS / SHARON LIGHTINGS
   Comprehensive Architectural Acoustic Lighting Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Brand Color Palette */
  --sdts-red: #e62e2d;
  --sdts-red-hover: #ff3b30;
  --sdts-red-glow: rgba(230, 46, 45, 0.4);
  --sdts-amber: #ff9800;
  --sdts-amber-light: #ffb74d;
  --sdts-gold: #ffc107;
  --sdts-gold-glow: rgba(255, 183, 77, 0.35);

  /* Architectural Dark Canvas */
  --bg-darkest: #07090e;
  --bg-dark: #0d111a;
  --bg-card: rgba(19, 25, 38, 0.85);
  --bg-card-hover: rgba(26, 35, 53, 0.95);
  --bg-glass: rgba(15, 20, 31, 0.7);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(230, 46, 45, 0.5);
  --border-glow: rgba(255, 152, 0, 0.3);

  /* Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* Elevation & Lighting Shadows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 20px 45px -15px rgba(0, 0, 0, 0.8);
  --shadow-glow-red: 0 0 25px rgba(230, 46, 45, 0.35);
  --shadow-glow-gold: 0 0 30px rgba(255, 183, 77, 0.3);

  /* Transition Speeds */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-darkest);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(230, 46, 45, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(255, 152, 0, 0.04) 0%, transparent 40%);
  background-attachment: fixed;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 700;
}

p {
  color: var(--text-secondary);
}

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

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-padding {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-subtitle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--sdts-red);
  margin-bottom: 0.75rem;
  background: rgba(230, 46, 45, 0.1);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(230, 46, 45, 0.25);
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 40%, #cbd5e1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(7, 9, 14, 0.96);
  border-bottom-color: rgba(230, 46, 45, 0.2);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

/* Logo Design */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.logo-graphic {
  position: relative;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sunburst-icon {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 8px rgba(230, 46, 45, 0.6));
  animation: sunGlow 4s ease-in-out infinite alternate;
}

@keyframes sunGlow {
  0% { filter: drop-shadow(0 0 6px rgba(230, 46, 45, 0.5)); }
  100% { filter: drop-shadow(0 0 14px rgba(255, 152, 0, 0.8)); }
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  line-height: 1;
}

.brand-title .highlight {
  color: var(--sdts-red);
}

.brand-subtitle {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--sdts-amber-light);
  font-weight: 600;
  margin-top: 3px;
}

/* Navigation Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.8rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.4rem 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--sdts-red), var(--sdts-amber));
  transition: width var(--transition-normal);
  border-radius: 2px;
}

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

.nav-cta-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Phone Quick Badge */
.phone-quick-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.phone-quick-badge:hover {
  border-color: var(--sdts-red);
  background: rgba(230, 46, 45, 0.15);
  color: #fff;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--sdts-red) 0%, #c62828 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--sdts-red-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ff4747 0%, var(--sdts-red) 100%);
  box-shadow: 0 6px 25px rgba(230, 46, 45, 0.6);
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.btn-amber {
  background: linear-gradient(135deg, var(--sdts-amber) 0%, #e65100 100%);
  color: #fff;
  box-shadow: 0 4px 18px rgba(255, 152, 0, 0.35);
}

.btn-amber:hover {
  background: linear-gradient(135deg, var(--sdts-amber-light) 0%, var(--sdts-amber) 100%);
  box-shadow: 0 6px 25px rgba(255, 152, 0, 0.55);
  transform: translateY(-2px);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: #fff;
}

/* Mobile Nav Drawer */
.mobile-menu {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: calc(100vh - 80px);
  background: rgba(7, 9, 14, 0.98);
  backdrop-filter: blur(20px);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  z-index: 999;
  border-top: 1px solid var(--border-subtle);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu .nav-link {
  font-size: 1.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Hero Section Styling
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 4rem;
  overflow: hidden;
}

.hero-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  background-size: cover;
  background-position: center;
  filter: brightness(0.35) contrast(1.1);
  transform: scale(1.05);
  animation: slowZoom 20s infinite alternate ease-in-out;
}

@keyframes slowZoom {
  0% { transform: scale(1); }
  100% { transform: scale(1.08); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background: linear-gradient(
    180deg, 
    rgba(7, 9, 14, 0.4) 0%, 
    rgba(7, 9, 14, 0.8) 70%, 
    rgba(7, 9, 14, 1) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 880px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(230, 46, 45, 0.15);
  border: 1px solid rgba(230, 46, 45, 0.4);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: #ff7675;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 15px rgba(230, 46, 45, 0.2);
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero-title .glow-red {
  color: var(--sdts-red);
  text-shadow: 0 0 25px rgba(230, 46, 45, 0.5);
}

.hero-title .glow-amber {
  color: var(--sdts-amber-light);
  text-shadow: 0 0 30px rgba(255, 183, 77, 0.4);
}

.hero-description {
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: #cbd5e1;
  margin-bottom: 2.5rem;
  max-width: 680px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  align-items: center;
  margin-bottom: 3.5rem;
}

/* Hero Trust Badges */
.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.badge-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sdts-amber-light);
  font-size: 1.25rem;
}

.badge-text-box h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
}

.badge-text-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Interactive Acoustic Audio/Noise Slider Simulation
   ========================================================================== */
.acoustic-sim-card {
  background: linear-gradient(135deg, rgba(26, 33, 49, 0.85) 0%, rgba(13, 17, 26, 0.95) 100%);
  border: 1px solid rgba(230, 46, 45, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(230, 46, 45, 0.1);
  position: relative;
  overflow: hidden;
}

.acoustic-sim-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.nrc-badge {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.4rem 1.1rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.wave-visualizer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  height: 70px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-md);
  padding: 0 1.5rem;
  margin: 1.5rem 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.wave-bar {
  width: 6px;
  height: 30px;
  background: var(--sdts-red);
  border-radius: 4px;
  transition: height 0.15s ease, background 0.3s ease;
}

.sim-slider-container {
  margin: 2rem 0 1rem 0;
}

.sim-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #1e293b;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}

.sim-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--sdts-red);
  cursor: pointer;
  box-shadow: 0 0 15px var(--sdts-red-glow);
  border: 2px solid #ffffff;
}

.sim-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--sdts-red);
  cursor: pointer;
  box-shadow: 0 0 15px var(--sdts-red-glow);
  border: 2px solid #ffffff;
}

.sim-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* ==========================================================================
   Cards & Grids
   ========================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(230, 46, 45, 0.4);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(230, 46, 45, 0.15);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--sdts-red), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: rgba(230, 46, 45, 0.12);
  border: 1px solid rgba(230, 46, 45, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sdts-red);
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
}

.feature-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ==========================================================================
   Product Cards & Showcase
   ========================================================================== */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 152, 0, 0.4);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 152, 0, 0.15);
}

.product-image-box {
  position: relative;
  width: 100%;
  height: 270px;
  background: #0f1523;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-image-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image-box img {
  transform: scale(1.08);
}

.product-badge-tag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(7, 9, 14, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: var(--sdts-amber-light);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
}

.product-content {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-name {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.product-summary {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex: 1;
}

.product-specs-list {
  list-style: none;
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
}

.product-specs-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #cbd5e1;
}

.product-specs-list li svg {
  color: var(--sdts-red);
  flex-shrink: 0;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.cct-tags {
  display: flex;
  gap: 0.35rem;
}

.cct-tag {
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--text-secondary);
}

/* ==========================================================================
   Filter Buttons
   ========================================================================== */
.filter-tabs-wrapper {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-family: 'Outfit', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--sdts-red);
  color: #ffffff;
  border-color: var(--sdts-red);
  box-shadow: 0 4px 15px var(--sdts-red-glow);
}

/* ==========================================================================
   Color Swatch Studio (From Brochure Pages 30-31)
   ========================================================================== */
.color-studio-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
}

.color-preview-stage {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3rem;
  background: rgba(0, 0, 0, 0.35);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.fixture-render-box {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  background: radial-gradient(circle at center, rgba(255,255,255,0.03) 0%, transparent 70%);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.fixture-drum-visual {
  width: 220px;
  height: 140px;
  border-radius: 110px / 40px;
  background: #f43f5e;
  position: relative;
  box-shadow: 0 15px 35px rgba(0,0,0,0.6);
  transition: background-color 0.4s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fixture-drum-visual::before {
  content: '';
  position: absolute;
  top: -15px;
  left: 0;
  width: 100%;
  height: 50px;
  border-radius: 50%;
  background: inherit;
  filter: brightness(1.2);
}

.fixture-drum-visual::after {
  content: '';
  position: absolute;
  bottom: 0px;
  left: 10%;
  width: 80%;
  height: 25px;
  border-radius: 50%;
  background: #fffbdf;
  box-shadow: 0 0 35px 12px #fff7b2;
}

.swatches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(75px, 1fr));
  gap: 0.85rem;
  max-height: 380px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.swatches-grid::-webkit-scrollbar {
  width: 6px;
}

.swatches-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.swatch-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.swatch-tile:hover,
.swatch-tile.active {
  border-color: var(--sdts-red);
  background: rgba(255, 255, 255, 0.08);
  transform: scale(1.06);
}

.swatch-color-pill {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.swatch-name {
  font-size: 0.68rem;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.1;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   Modular Joint Diagrams (From Brochure Pages 18-19)
   ========================================================================== */
.modular-diagrams-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.joint-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  transition: all var(--transition-normal);
}

.joint-card:hover {
  border-color: var(--sdts-red);
  transform: translateY(-4px);
}

.joint-visual {
  height: 110px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.joint-visual svg {
  max-width: 100%;
  max-height: 100%;
}

.joint-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.35rem;
}

.joint-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Services Section (Per User Comment: "Add Service")
   ========================================================================== */
.service-hero-card {
  background: linear-gradient(135deg, rgba(230, 46, 45, 0.12) 0%, rgba(13, 17, 26, 0.95) 100%);
  border: 1px solid rgba(230, 46, 45, 0.3);
  border-radius: var(--radius-lg);
  padding: 3rem;
  margin-bottom: 3.5rem;
  box-shadow: var(--shadow-lg);
}

.service-workflow-step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.step-number {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--sdts-red);
  color: #fff;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px var(--sdts-red-glow);
}

/* ==========================================================================
   Form & Quote Builder (From Brochure Page 32)
   ========================================================================== */
.quote-form-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #cbd5e1;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.15rem;
  background: rgba(10, 14, 22, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--sdts-red);
  box-shadow: 0 0 0 3px rgba(230, 46, 45, 0.2);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #040609;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 5rem;
  padding-bottom: 2rem;
  position: relative;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand-bio {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 1.25rem 0 1.75rem 0;
  max-width: 380px;
}

.footer-col-title {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 1.25rem;
  font-weight: 700;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--sdts-red);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link-item {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-link-item:hover {
  color: #fff;
  transform: translateX(3px);
}

.contact-info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-info-item svg {
  color: var(--sdts-red);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Toast Alert Message */
.toast-msg {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #10b981;
  color: #ffffff;
  padding: 1rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 9999;
  transform: translateY(150%);
  transition: transform var(--transition-normal);
}

.toast-msg.show {
  transform: translateY(0);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .color-preview-stage {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta-wrap .phone-quick-badge {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .grid-3, .grid-2, .grid-4 {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .form-row-2 {
    grid-template-columns: 1fr;
  }
  .hero-section {
    padding-top: 120px;
    text-align: center;
  }
  .hero-content {
    margin: 0 auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-badges-row {
    justify-content: center;
  }
}