/* ==========================================================================
   JOMETRY / D'WALL ARCHITECTURAL DESIGN SYSTEM - COMPONENTS
   ========================================================================== */

/* Header & Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-rule);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid var(--color-rule);
}

[data-theme="dark"] .navbar.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
}

.navbar .container,
.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  gap: var(--space-md);
}

/* Brand Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.brand-logo:hover {
  opacity: 0.85;
}

.brand-symbol {
  width: 28px;
  height: 28px;
  background: var(--color-ink);
  color: var(--color-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-subtle);
}

[data-theme="dark"] .brand-symbol {
  background: #ffffff;
  color: #0b0d11;
}

.brand-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink);
  line-height: 1;
}

.brand-edition {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--color-service-blue);
  font-weight: 600;
  background: var(--color-service-blue-light);
  padding: 2px 6px;
  border-radius: 2px;
}

[data-theme="dark"] .brand-edition {
  background: var(--color-service-bg);
}

/* Desktop Navigation */
.desktop-nav {
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  padding: 6px 10px;
  border-radius: var(--radius-subtle);
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-ink);
  background: var(--color-paper-alt);
}

.nav-link.active {
  color: var(--color-ink);
  font-weight: 600;
  background: var(--color-paper-alt);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  background: rgba(255, 255, 255, 0.08);
}

/* Nav Actions Area */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Clean Icon Theme Toggle */
.btn-theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-paper-card);
  border: 1px solid var(--color-rule);
  color: var(--color-ink);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
}

.btn-theme-toggle:hover {
  background: var(--color-paper-alt);
  border-color: var(--color-ink-soft);
  transform: scale(1.05);
}

[data-theme="dark"] .btn-theme-toggle {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
}

[data-theme="dark"] .btn-theme-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
}

.theme-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
}

/* Enquire CTA Button */
.btn-nav-action {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--color-ink);
  color: var(--color-paper) !important;
  border: 1px solid var(--color-ink);
  padding: 7px 18px;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-subtle);
  white-space: nowrap;
}

.btn-nav-action:hover {
  background: var(--color-service-blue);
  border-color: var(--color-service-blue);
  color: #ffffff !important;
  box-shadow: 0 2px 10px var(--color-service-blue-glow);
}

[data-theme="dark"] .btn-nav-action {
  background: #ffffff;
  color: #0b0d11 !important;
  border-color: #ffffff;
}

[data-theme="dark"] .btn-nav-action:hover {
  background: var(--color-service-blue);
  border-color: var(--color-service-blue);
  color: #ffffff !important;
}

/* Mobile Hamburger Toggle Button */
.btn-mobile-menu {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 36px;
  height: 36px;
  background: var(--color-paper-card);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-subtle);
  padding: 8px 7px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-mobile-menu:hover {
  background: var(--color-paper-alt);
  border-color: var(--color-ink-soft);
}

.btn-mobile-menu .hamburger-bar {
  width: 100%;
  height: 2px;
  background-color: var(--color-ink);
  transition: all 0.25s ease;
  border-radius: 1px;
}

/* Mobile Menu Drawer Overlay */
.mobile-menu-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 340px;
  background: var(--color-paper);
  border-left: 1px solid var(--color-rule);
  box-shadow: var(--shadow-floating);
  z-index: 10000;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  padding: 24px;
  overflow-y: auto;
}

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

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-rule);
}

.btn-mobile-close {
  background: none;
  border: 1px solid var(--color-rule);
  font-size: 1.4rem;
  line-height: 1;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-subtle);
  cursor: pointer;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-mobile-close:hover {
  background: var(--color-paper-alt);
  border-color: var(--color-ink);
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: auto;
}

.mobile-nav-link {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  text-decoration: none;
  padding: 12px 14px;
  border-radius: var(--radius-subtle);
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.mobile-nav-link .nav-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-service-blue);
  font-weight: 600;
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
  color: var(--color-ink);
  font-weight: 600;
}

.mobile-menu-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--color-rule);
}

/* Breakpoints for Navigation */
@media (max-width: 1080px) {
  .desktop-nav {
    display: none;
  }
  .btn-mobile-menu {
    display: flex;
  }
}

@media (max-width: 480px) {
  .btn-nav-action {
    display: none;
  }
}

/* Badges & Status Tags */
.status-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-subtle);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.status-badge.production {
  background-color: var(--color-service-bg);
  color: var(--color-service-blue);
  border: 1px solid rgba(29, 91, 143, 0.25);
}

.status-badge.development {
  background-color: #fdf5ef;
  color: var(--color-status-development);
  border: 1px solid rgba(168, 85, 31, 0.25);
}

.status-badge.testing {
  background-color: #fcf8f0;
  color: var(--color-status-testing);
  border: 1px solid rgba(138, 106, 59, 0.25);
}

/* Stat Band */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--color-rule);
  border-bottom: 1px solid var(--color-rule);
  margin: var(--space-lg) 0;
}

.stat-item b {
  display: block;
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-ink);
  line-height: 1;
  margin-bottom: var(--space-xxs);
}

.stat-item span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
}

/* Comparison Box (Conventional vs D'WALL) */
.comparison-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--color-rule);
  margin: var(--space-md) 0;
  background: #fff;
}

.comparison-col {
  padding: var(--space-md) var(--space-lg);
}

.comparison-col.old {
  background: var(--color-paper-alt);
  border-right: 1px solid var(--color-rule);
}

.comparison-col h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.comparison-col.old h4 { color: var(--color-ink-faint); }
.comparison-col.new h4 { color: var(--color-service-blue); }

.comparison-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--color-ink-soft);
}

.comparison-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-rule);
  display: flex;
  gap: var(--space-xs);
}

.comparison-list li:last-child {
  border-bottom: none;
}

.comparison-list li::before {
  content: attr(data-step);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ink-faint);
  min-width: 24px;
}

.comparison-tally {
  margin-top: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-ink);
}

/* Sequence Steps (Access in 3 moves) */
.sequence-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin: var(--space-md) 0;
}

.sequence-card {
  border: 1px solid var(--color-rule);
  background: #fff;
}

.sequence-media {
  height: 200px;
  background: var(--color-paper-alt);
  border-bottom: 1px dashed var(--color-rule);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  text-align: center;
}

.sequence-ref {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-service-blue);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
}

.sequence-desc {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-faint);
  line-height: 1.4;
}

.sequence-caption {
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: center;
  background: #fff;
  border-top: 1px solid var(--color-rule);
  color: var(--color-ink);
  font-weight: 500;
}

/* Product Cards & Filters */
.filter-bar {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-rule);
  padding-bottom: var(--space-xs);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid transparent;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--color-ink-soft);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--color-ink);
}

.filter-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text) !important;
  border-color: var(--btn-primary-border);
}

.product-card {
  background: #fff;
  border: 1px solid var(--color-rule);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition-fast);
  position: relative;
}

.product-card:hover {
  border-color: var(--color-ink);
}

.product-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.product-title {
  font-size: 1.4rem;
  margin-bottom: 4px;
}

.product-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-faint);
  text-transform: uppercase;
}

.product-card-body p {
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.product-card-footer {
  margin-top: auto;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn-secondary {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-rule);
  padding: 8px 14px;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--color-ink);
  background: var(--color-paper-alt);
}

/* Specification Tables */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: var(--space-sm) 0;
}

.spec-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink-faint);
  border-bottom: 1.5px solid var(--color-ink);
  padding: 8px 0;
  font-weight: 500;
}

.spec-table td {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-rule);
  color: var(--color-ink-soft);
  vertical-align: top;
}

.spec-table td:first-child {
  color: var(--color-ink);
  font-weight: 500;
  width: 32%;
}

.spec-table td:last-child {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
  width: 25%;
}

/* Technical Diagram Wrapper */
.diagram-wrap {
  border: 1px solid var(--color-rule);
  padding: var(--space-md);
  background: #fff;
  margin-top: var(--space-sm);
}

.diagram-caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-faint);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: center;
}

.callout-box {
  border-left: 3px solid var(--color-service-blue);
  background: var(--color-service-bg);
  padding: var(--space-md);
  margin: var(--space-md) 0;
}

.callout-box.clay {
  border-left-color: var(--color-acoustic-clay);
  background: var(--color-acoustic-bg);
}

.callout-box.moss {
  border-left-color: var(--color-living-moss);
  background: var(--color-living-bg);
}

.callout-box h4 {
  margin-bottom: var(--space-xs);
}

.callout-box p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(18, 21, 26, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #fff;
  border: 1px solid var(--color-ink);
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-xl);
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-ink-faint);
}

.modal-close:hover { color: var(--color-ink); }

/* Form Controls */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
  color: var(--color-ink);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--color-rule);
  background: var(--color-paper);
  color: var(--color-ink);
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-ink);
  background: #fff;
}

.btn-primary {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text) !important;
  border: 1px solid var(--btn-primary-border);
  padding: 12px 24px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: var(--radius-subtle);
  font-weight: 500;
}

.btn-primary:hover {
  background: var(--btn-primary-hover-bg);
  color: var(--btn-primary-hover-text) !important;
  border-color: var(--btn-primary-hover-border);
}

.btn-hero-primary {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: #ffffff !important;
  color: #0b0d11 !important;
  border: 1px solid #ffffff !important;
  padding: 12px 24px;
  border-radius: var(--radius-subtle);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-hero-primary:hover {
  background: var(--color-service-blue) !important;
  color: #ffffff !important;
  border-color: var(--color-service-blue) !important;
  transform: translateY(-1px);
}

.btn-hero-secondary {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #ffffff !important;
  background: rgba(255, 255, 255, 0.08) !important;
  border: 1px solid rgba(255, 255, 255, 0.28) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 12px 24px;
  border-radius: var(--radius-subtle);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.2) !important;
  border-color: rgba(255, 255, 255, 0.75) !important;
  color: #ffffff !important;
  transform: translateY(-1px);
}

/* Concept Visual Badge Overlay */
.concept-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #fff;
  border: 1px solid var(--color-status-development);
  color: var(--color-status-development);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 8px;
  font-weight: 500;
}

/* ==========================================================================
   UPGRADED ARCHITECTURAL COMPONENTS
   ========================================================================== */

/* Header Progress Bar */
.scroll-progress-container {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: transparent;
}
.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-service-blue);
  transition: width 0.1s linear;
}

/* Hero Section & Pillar Tabs */
.hero-wrapper {
  position: relative;
  background: var(--color-ink-deep);
  color: #fff;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: var(--space-xl) 0 var(--space-lg);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8,9,11,0.65) 0%, rgba(8,9,11,0.85) 60%, rgba(8,9,11,0.98) 100%);
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
}

.hero-pillar-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.hero-pillar-tab {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 8px 18px;
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.hero-pillar-tab:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
}

.hero-pillar-tab.active {
  background: #ffffff;
  color: #0b0d11 !important;
  border-color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .hero-pillar-tab.active {
  background: var(--color-service-blue) !important;
  color: #ffffff !important;
  border-color: var(--color-service-blue) !important;
  box-shadow: 0 4px 16px rgba(20, 88, 153, 0.45);
}

.hero-metric-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #fff;
  margin-bottom: var(--space-md);
}

/* Card Thumbnails */
.card-thumb-wrap {
  width: 100%;
  height: 190px;
  overflow: hidden;
  background: #20242c;
  position: relative;
  border-bottom: 1px solid var(--color-rule);
}

.card-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-normal);
}

.product-card:hover .card-thumb-img {
  transform: scale(1.05);
}

.prod-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(15, 17, 21, 0.88);
  backdrop-filter: blur(6px);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-subtle);
  border: 1px solid rgba(255,255,255,0.2);
}

.product-card-desc {
  font-size: 0.88rem;
  color: var(--color-ink-soft);
  line-height: 1.45;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-spec-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-faint);
  background: var(--color-paper-subtle);
  padding: 6px 10px;
  border-radius: var(--radius-subtle);
  border: 1px solid var(--color-rule-subtle);
}

/* Tile Layout Studio */
.studio-container {
  background: var(--color-ink);
  color: #fff;
  padding: var(--space-xl);
  border-radius: var(--radius-card);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-card);
}

.studio-grid-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  background: #08090b;
  padding: 16px;
  border-radius: var(--radius-subtle);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 2px 12px rgba(0, 0, 0, 0.6);
}

.tile-rotation-badge {
  position: absolute;
  bottom: 6px;
  right: 6px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: rgba(0, 0, 0, 0.65);
  color: rgba(255, 255, 255, 0.8);
  padding: 2px 5px;
  border-radius: 2px;
  pointer-events: none;
}

.studio-controls-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.preset-btn-group, .finish-btn-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.preset-btn, .finish-swatch-btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 6px 12px;
  cursor: pointer;
  border-radius: var(--radius-subtle);
  transition: all var(--transition-fast);
}

.preset-btn:hover, .finish-swatch-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.preset-btn.active, .finish-swatch-btn.active {
  background: #ffffff;
  color: #0b0d11 !important;
  border-color: #ffffff;
  font-weight: 600;
}

[data-theme="dark"] .preset-btn.active,
[data-theme="dark"] .finish-swatch-btn.active {
  background: var(--color-service-blue) !important;
  color: #ffffff !important;
  border-color: var(--color-service-blue) !important;
}

/* Contextual Engineering Stepper & Layer Tabs */
.cavity-layer-tab, .leak-step-btn, .acoustic-preset-btn {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--color-paper-card);
  color: var(--color-ink-soft);
  border: 1px solid var(--color-rule);
  padding: 8px 16px;
  cursor: pointer;
  border-radius: var(--radius-subtle);
  transition: all var(--transition-fast);
}

.cavity-layer-tab:hover, .leak-step-btn:hover, .acoustic-preset-btn:hover {
  color: var(--color-ink);
  border-color: var(--color-ink-faint);
  background: var(--color-paper-alt);
}

.cavity-layer-tab.active {
  background: var(--color-service-blue) !important;
  color: #ffffff !important;
  border-color: var(--color-service-blue) !important;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(20, 88, 153, 0.35);
}

.leak-step-btn.active {
  background: var(--color-living-moss) !important;
  color: #ffffff !important;
  border-color: var(--color-living-moss) !important;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(36, 77, 45, 0.35);
}

.acoustic-preset-btn.active {
  background: var(--color-acoustic-clay) !important;
  color: #ffffff !important;
  border-color: var(--color-acoustic-clay) !important;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(168, 85, 31, 0.35);
}

/* Variant Comparison Active State */
.btn-compare.active {
  background: var(--btn-primary-bg) !important;
  color: var(--btn-primary-text) !important;
  border-color: var(--btn-primary-border) !important;
}

.btn-toggle-backlit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  background: rgba(245, 158, 11, 0.15);
  color: #ffc247;
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 8px 16px;
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

.btn-toggle-backlit:hover, .btn-toggle-backlit.active {
  background: #f59e0b;
  color: #000;
  border-color: #f59e0b;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.5);
  font-weight: 600;
}

/* Acoustic Simulator UI */
.slider-container {
  background: #fff;
  border: 1px solid var(--color-rule);
  padding: var(--space-lg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-subtle);
}

.custom-range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #e2e8f0;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
  margin: 16px 0;
}

.custom-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-acoustic-clay);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(166, 77, 45, 0.4);
  border: 2px solid #fff;
  transition: transform 0.15s ease;
}

.custom-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.acoustic-metric-card {
  background: var(--color-paper-alt);
  padding: 14px 18px;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-subtle);
}

.acoustic-metric-val {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-acoustic-clay);
}

/* Biofilter Air Flow & Leak Defense */
.biofilter-container {
  background: #fff;
  border: 1px solid var(--color-rule);
  padding: var(--space-lg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-subtle);
}

.fan-control-group {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.fan-speed-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 6px 14px;
  border: 1px solid var(--color-rule);
  background: #fff;
  cursor: pointer;
  border-radius: var(--radius-subtle);
  transition: all var(--transition-fast);
}

.fan-speed-btn.active {
  background: var(--color-living-moss);
  color: #fff;
  border-color: var(--color-living-moss);
}

/* Slide-out Spec Drawer */
.drawer-overlay {
  position: fixed;
  inset: 0;
  z-index: 1050;
  background: rgba(15, 17, 21, 0.65);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  display: flex;
  justify-content: flex-end;
}

.drawer-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.drawer-container {
  width: 100%;
  max-width: 580px;
  height: 100%;
  background: #fff;
  overflow-y: auto;
  padding: var(--space-xl);
  box-shadow: var(--shadow-floating);
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.drawer-overlay.active .drawer-container {
  transform: translateX(0);
}

.drawer-close {
  align-self: flex-end;
  background: transparent;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--color-ink-faint);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.drawer-close:hover {
  color: var(--color-ink);
}

/* Spec Builder Output */
.spec-code-box {
  background: var(--color-ink-deep);
  color: #60a5fa;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  padding: 14px 18px;
  border-radius: var(--radius-subtle);
  border: 1px solid rgba(255, 255, 255, 0.15);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
  overflow-x: auto;
}

.csi-spec-box {
  background: #f8fafc;
  border: 1px solid var(--color-rule);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: #334155;
  white-space: pre-wrap;
  border-radius: var(--radius-subtle);
  max-height: 240px;
  overflow-y: auto;
}

/* ==========================================================================
   THEME TOGGLE & ADVANCED HOVER ANIMATIONS
   ========================================================================== */

/* Global Theme Transition */
body, .navbar, .product-card, .sequence-card, .comparison-box, 
.diagram-wrap, .spec-table, .modal-content, .drawer-container, 
.slider-container, .biofilter-container, .callout-box, .stat-item,
.form-input, .form-select, .form-textarea, .csi-spec-box {
  transition: background-color 0.28s ease, border-color 0.28s ease, color 0.28s ease, box-shadow 0.28s ease;
}

/* Theme Toggle Button */
.btn-theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-paper-subtle);
  color: var(--color-ink);
  border: 1px solid var(--color-rule);
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  user-select: none;
}

.btn-theme-toggle:hover {
  background: var(--color-ink);
  color: var(--color-paper);
  border-color: var(--color-ink);
  transform: translateY(-1px);
  box-shadow: var(--shadow-subtle);
}

.theme-icon {
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-theme-toggle:hover .theme-icon {
  transform: rotate(25deg);
}

/* Button Shimmer Sweep Effect */
.btn-primary, .btn-nav-action {
  position: relative;
  overflow: hidden;
}

.btn-primary::after, .btn-nav-action::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent 30%, rgba(255, 255, 255, 0.22) 50%, transparent 70%);
  transform: rotate(30deg) translateX(-120%);
  transition: transform 0.65s ease;
  pointer-events: none;
}

.btn-primary:hover::after, .btn-nav-action:hover::after {
  transform: rotate(30deg) translateX(120%);
}

/* Navbar Link Hover Fluid Animation */
.nav-link {
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-ink);
  transition: width 0.28s cubic-bezier(0.16, 1, 0.3, 1), left 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
  left: 0;
}

/* Dark mode specific component adjustments */
[data-theme="dark"] .navbar {
  background: rgba(9, 10, 14, 0.92);
  border-bottom-color: var(--color-rule);
}

[data-theme="dark"] .brand-symbol {
  background: #fff;
  color: var(--color-ink-deep);
}

[data-theme="dark"] .brand-logo {
  color: #fff;
}

[data-theme="dark"] .comparison-box {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
}

[data-theme="dark"] .comparison-col.old {
  background: var(--color-paper-alt);
  border-right-color: var(--color-rule);
}

[data-theme="dark"] .comparison-col.new {
  background: var(--color-service-blue-light) !important;
}

[data-theme="dark"] .sequence-card {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
}

[data-theme="dark"] .sequence-media {
  background: var(--color-paper-alt);
  border-bottom-color: var(--color-rule);
}

[data-theme="dark"] .sequence-caption {
  background: var(--color-paper-card);
  border-top-color: var(--color-rule);
  color: var(--color-ink);
}

[data-theme="dark"] .product-card {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
}

[data-theme="dark"] .product-card:hover {
  border-color: var(--color-ink-faint);
}

[data-theme="dark"] .slider-container, 
[data-theme="dark"] .biofilter-container,
[data-theme="dark"] .diagram-wrap {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
}

[data-theme="dark"] .diagram-wrap svg,
[data-theme="dark"] .biofilter-container svg {
  background: #0e1117 !important;
  border-color: var(--color-rule) !important;
}

[data-theme="dark"] .spec-table th {
  border-bottom-color: var(--color-ink);
  color: var(--color-ink-faint);
}

[data-theme="dark"] .spec-table td {
  border-bottom-color: var(--color-rule);
}

[data-theme="dark"] .spec-table tbody tr:hover {
  background: var(--color-paper-subtle);
}

[data-theme="dark"] .modal-content,
[data-theme="dark"] .drawer-container {
  background: var(--color-paper-card);
  border-color: var(--color-rule);
  color: var(--color-ink);
}

[data-theme="dark"] .csi-spec-box {
  background: #080a0e;
  border-color: var(--color-rule);
  color: #94a3b8;
}

[data-theme="dark"] .btn-secondary {
  border-color: var(--color-rule);
  color: var(--color-ink);
}

[data-theme="dark"] .btn-secondary:hover {
  background: var(--color-paper-subtle);
  border-color: var(--color-ink-faint);
}

[data-theme="dark"] .btn-primary,
[data-theme="dark"] .btn-nav-action {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text) !important;
  border-color: var(--btn-primary-border);
}

[data-theme="dark"] .btn-primary:hover,
[data-theme="dark"] .btn-nav-action:hover {
  background: var(--btn-primary-hover-bg);
  color: var(--btn-primary-hover-text) !important;
  border-color: var(--btn-primary-hover-border);
}

[data-theme="dark"] .btn-hero-primary {
  background: var(--btn-hero-primary-bg) !important;
  color: var(--btn-hero-primary-text) !important;
  border-color: var(--btn-hero-primary-border) !important;
}

[data-theme="dark"] .btn-hero-primary:hover {
  background: var(--btn-hero-primary-hover-bg) !important;
  color: var(--btn-hero-primary-hover-text) !important;
  border-color: var(--btn-hero-primary-hover-border) !important;
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
  background: var(--color-paper-alt);
  border-color: var(--color-rule);
  color: var(--color-ink);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .form-select:focus,
[data-theme="dark"] .form-textarea:focus {
  background: var(--color-paper-card);
  border-color: var(--color-service-blue);
}

[data-theme="dark"] .acoustic-metric-card,
[data-theme="dark"] #leak-step-card {
  background: var(--color-paper-alt) !important;
  border-color: var(--color-rule) !important;
}

[data-theme="dark"] .fan-speed-btn {
  background: var(--color-paper-alt);
  border-color: var(--color-rule);
  color: var(--color-ink-soft);
}

[data-theme="dark"] .fan-speed-btn.active {
  background: var(--color-living-moss);
  color: #fff;
  border-color: var(--color-living-moss);
}

/* Card Image Zoom Effect */
.card-thumb-wrap {
  position: relative;
  overflow: hidden;
}

.card-thumb-wrap img {
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), filter 0.5s ease;
}

.product-card:hover .card-thumb-wrap img {
  transform: scale(1.06);
  filter: brightness(1.05);
}

/* Theme-adaptive Cards & Sections */
.stats-section {
  background: var(--color-paper-card);
  border-bottom: 1px solid var(--color-rule);
  padding: var(--space-lg) 0;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.stats-section .stat-item b {
  color: var(--color-ink);
}

.stats-section .stat-item span {
  color: var(--color-ink-faint);
}

.spec-package-card {
  background: var(--color-paper-card);
  color: var(--color-ink);
  padding: var(--space-xl);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-rule);
  box-shadow: var(--shadow-card);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.cavity-info-card {
  background: var(--color-paper-card);
  border: 1px solid var(--color-rule);
  padding: var(--space-lg);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.table-theme-card {
  background: var(--color-paper-card);
  padding: var(--space-md);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

/* ==========================================================================
   INTERACTIVE SIMULATION WIDGETS & CONTROLS
   ========================================================================== */

.sim-step-btn, .raceway-tier-tab, .facade-cct-btn, .cct-select-btn, .leak-step-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--color-paper-card);
  color: var(--color-ink-soft);
  border: 1px solid var(--color-rule);
  padding: 8px 14px;
  cursor: pointer;
  border-radius: var(--radius-subtle);
  transition: all var(--transition-fast);
}

.sim-step-btn:hover, .raceway-tier-tab:hover, .facade-cct-btn:hover, .cct-select-btn:hover, .leak-step-btn:hover {
  background: var(--color-paper-alt);
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.sim-step-btn.active, .raceway-tier-tab.active, .facade-cct-btn.active, .cct-select-btn.active, .leak-step-btn.active {
  background: var(--color-ink);
  color: #fff !important;
  border-color: var(--color-ink);
  font-weight: 600;
}

[data-theme="dark"] .sim-step-btn,
[data-theme="dark"] .raceway-tier-tab,
[data-theme="dark"] .facade-cct-btn,
[data-theme="dark"] .cct-select-btn,
[data-theme="dark"] .leak-step-btn {
  background: var(--color-paper-card);
  color: var(--color-ink-soft);
  border-color: var(--color-rule);
}

[data-theme="dark"] .sim-step-btn.active,
[data-theme="dark"] .raceway-tier-tab.active {
  background: var(--color-service-blue);
  color: #fff !important;
  border-color: var(--color-service-blue);
}

[data-theme="dark"] .leak-step-btn.active {
  background: var(--color-living-moss);
  color: #fff !important;
  border-color: var(--color-living-moss);
}

[data-theme="dark"] .facade-cct-btn.active,
[data-theme="dark"] .cct-select-btn.active {
  background: var(--color-backlit-amber);
  color: #0b0d11 !important;
  border-color: var(--color-backlit-amber);
}

/* Backlit Toggle Button */
.btn-toggle-backlit {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-backlit-amber);
  border: 1px solid var(--color-backlit-amber);
  padding: 8px 18px;
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  font-weight: 600;
}

.btn-toggle-backlit:hover {
  background: var(--color-backlit-amber);
  color: #0b0d11;
}

.btn-toggle-backlit.active {
  background: var(--color-backlit-amber);
  color: #0b0d11;
  box-shadow: 0 0 16px var(--color-backlit-glow);
}

/* Spec Code Box */
.spec-code-box {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-service-blue);
  background: var(--color-paper-card);
  border: 1px dashed var(--color-service-blue);
  padding: 12px 16px;
  border-radius: var(--radius-subtle);
  margin-bottom: 12px;
  word-break: break-all;
}

/* Custom Range Slider */
.custom-range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--color-rule);
  border-radius: var(--radius-pill);
  outline: none;
  margin: 14px 0;
  transition: background var(--transition-fast);
}

.custom-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-ink);
  border: 2px solid #fff;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  transition: transform 0.15s ease, background 0.15s ease;
}

.custom-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: var(--color-service-blue);
}

[data-theme="dark"] .custom-range-slider {
  background: var(--color-rule);
}

[data-theme="dark"] .custom-range-slider::-webkit-slider-thumb {
  background: var(--color-service-blue);
  border-color: #090a0e;
}