/* ==========================================================================
   AIRYAIRE - Precision Air Distribution & Ventilation Products
   Ultra-Premium Modern HVAC Product Showcase Stylesheet
   ========================================================================== */

/* --- CSS Variables & Theme Tokens --- */
:root {
  --bg-main: #060b14;
  --bg-secondary: #0b1322;
  --bg-card: rgba(13, 23, 41, 0.75);
  --bg-card-hover: rgba(18, 33, 58, 0.85);
  --bg-glass: rgba(15, 27, 49, 0.6);
  --border-color: rgba(56, 189, 248, 0.14);
  --border-hover: rgba(56, 189, 248, 0.45);
  --border-glow: rgba(0, 229, 255, 0.35);

  --accent-cyan: #00f0ff;
  --accent-blue: #0ea5e9;
  --accent-blue-deep: #0284c7;
  --accent-glow: rgba(14, 165, 233, 0.25);
  --accent-gradient: linear-gradient(135deg, #00f0ff 0%, #0ea5e9 50%, #2563eb 100%);
  --accent-gradient-subtle: linear-gradient(135deg, rgba(0, 240, 255, 0.12) 0%, rgba(14, 165, 233, 0.08) 100%);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #8496ae;
  --text-cyan: #38bdf8;

  --pedestal-bg: linear-gradient(145deg, #ffffff 0%, #f1f5f9 100%);
  --pedestal-border: rgba(226, 232, 240, 0.8);
  --pedestal-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), inset 0 2px 4px rgba(255, 255, 255, 0.8);

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --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-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-secondary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Atmosphere & Grid */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 15% 15%, rgba(14, 165, 233, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 65%, rgba(0, 240, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(37, 99, 235, 0.1) 0%, transparent 60%);
  pointer-events: none;
  z-index: -2;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: rgba(56, 189, 248, 0.3);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(56, 189, 248, 0.6);
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
}

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

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(6, 11, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(6, 11, 20, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  border-bottom-color: rgba(56, 189, 248, 0.25);
}

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

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.brand-logo {
  height: 46px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(14, 165, 233, 0.4));
  transition: transform var(--transition-normal);
}

.brand-wrapper:hover .brand-logo {
  transform: scale(1.03);
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.3);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-cyan);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent-gradient);
  transition: width var(--transition-normal);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #04101e;
  box-shadow: 0 4px 18px rgba(14, 165, 233, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 240, 255, 0.5);
  color: #000;
}

.btn-secondary {
  background: rgba(14, 165, 233, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.btn-secondary:hover {
  background: rgba(14, 165, 233, 0.2);
  border-color: var(--accent-cyan);
  color: #fff;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.82rem;
  border-radius: 6px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 1.4rem;
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 90px 0 60px;
  overflow: hidden;
}

.hero-bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 920px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
}

.hero-title {
  font-size: clamp(1.8rem, 6vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #ffffff;
  word-break: break-word;
}

.hero-title-highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* Hero Stats Bar */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 30px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.stat-item {
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -10px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-color);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* ==========================================================================
   SHOWCASE CONTROLS: SEARCH, FILTERS & VIEW
   ========================================================================== */
.showcase-section {
  padding: 60px 0 100px;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* Filter Bar Container */
.filter-wrapper {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin-bottom: 36px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.filter-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.category-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.category-btn:hover {
  background: rgba(14, 165, 233, 0.15);
  border-color: rgba(56, 189, 248, 0.4);
  color: #fff;
}

.category-btn.active {
  background: var(--accent-gradient);
  border-color: transparent;
  color: #04101e;
  box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
}

.category-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 7px;
  border-radius: 10px;
  font-size: 0.72rem;
  background: rgba(0, 0, 0, 0.25);
  color: inherit;
}

.category-btn.active .category-count {
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
}

/* View Mode Toggles */
.view-modes {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.view-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.view-btn:hover {
  color: var(--text-primary);
}

.view-btn.active {
  background: var(--accent-blue);
  color: #fff;
}

/* Filter Bottom Row: Search & Sub-filters */
.filter-bottom-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-input {
  width: 100%;
  padding: 10px 16px 10px 42px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: var(--font-body);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.2);
  background: rgba(0, 0, 0, 0.6);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: none;
  padding: 4px;
}

.search-clear:hover {
  color: var(--text-primary);
}

.material-select {
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-family: var(--font-body);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.material-select:focus {
  border-color: var(--accent-cyan);
}

.filter-results-count {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-left: auto;
  white-space: nowrap;
}

/* ==========================================================================
   PRODUCT GRID & CARDS
   ========================================================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

/* Product Card */
.product-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.6), 0 0 25px rgba(14, 165, 233, 0.2);
  background: var(--bg-card-hover);
}

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

/* Card Header & Badges */
.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.product-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.card-page-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Product Pedestal / Image Viewer */
.product-pedestal {
  position: relative;
  width: 100%;
  height: 220px;
  background: var(--pedestal-bg);
  border: 1px solid var(--pedestal-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  margin-bottom: 20px;
  overflow: hidden;
  box-shadow: var(--pedestal-shadow);
  cursor: pointer;
}

.product-pedestal::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #0ea5e9, #00f0ff);
  opacity: 0.7;
}

.product-img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  transition: transform var(--transition-normal);
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.25));
}

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

.pedestal-overlay-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(6, 11, 20, 0.75);
  backdrop-filter: blur(8px);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  opacity: 0;
  transform: translateY(-4px);
  transition: all var(--transition-fast);
}

.product-pedestal:hover .pedestal-overlay-btn {
  opacity: 1;
  transform: translateY(0);
}

/* Card Content */
.product-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-category-name {
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.product-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

/* PDF Bullet Points */
.product-bullets {
  list-style: none;
  margin-bottom: 18px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  padding: 12px 14px;
  border-left: 2px solid var(--accent-blue);
}

.product-bullet-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 6px;
}

.product-bullet-item:last-child {
  margin-bottom: 0;
}

.bullet-marker {
  color: var(--accent-cyan);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.1;
}

/* Card Specs Pill Tags */
.specs-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.spec-pill {
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.spec-pill strong {
  color: var(--text-secondary);
  font-weight: 600;
}

/* Card Actions */
.card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.card-actions .btn {
  flex: 1;
}

.btn-compare-card {
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}

.btn-compare-card:hover,
.btn-compare-card.active {
  background: rgba(14, 165, 233, 0.2);
  border-color: var(--accent-cyan);
  color: #fff;
}

/* ==========================================================================
   SPEC TABLE VIEW (ALTERNATIVE VIEW)
   ========================================================================== */
.products-table-wrapper {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow-x: auto;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.products-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.products-table th {
  background: rgba(0, 0, 0, 0.4);
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.products-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  vertical-align: middle;
}

.products-table tr:hover td {
  background: rgba(14, 165, 233, 0.05);
}

.table-img-cell {
  width: 70px;
}

.table-img-thumb {
  width: 60px;
  height: 50px;
  object-fit: contain;
  background: #fff;
  border-radius: 4px;
  padding: 4px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  grid-column: 1 / -1;
}

.empty-state-icon {
  font-size: 3rem;
  color: var(--accent-blue);
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.empty-state-text {
  color: var(--text-muted);
  margin-bottom: 20px;
}

/* ==========================================================================
   INTERACTIVE HVAC CFM / SIZING ESTIMATOR TOOL
   ========================================================================== */
.calculator-section {
  padding: 80px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(11, 19, 34, 0.8) 50%, transparent 100%);
  position: relative;
}

.calculator-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

.calculator-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
}

.calculator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 30px;
}

.calc-inputs-group {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
}

.form-label-desc {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 14px rgba(0, 240, 255, 0.25);
  background: rgba(0, 0, 0, 0.6);
}

.dimension-inputs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

/* Calculator Result Display */
.calc-results-box {
  background: rgba(6, 11, 20, 0.7);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.results-header {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1.1;
}

.metric-unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 4px;
}

.recommended-equip-box {
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: 8px;
  padding: 18px;
}

.equip-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.equip-list {
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.equip-list li {
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.equip-list li::before {
  content: '✓';
  color: var(--accent-cyan);
  font-weight: bold;
}

/* ==========================================================================
   MANUFACTURING & QUALITY EXCELLENCE SECTION
   ========================================================================== */
.quality-section {
  padding: 80px 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.feature-box {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition-normal);
}

.feature-box:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}

.feature-icon-wrapper {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: var(--accent-gradient-subtle);
  border: 1px solid rgba(56, 189, 248, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-cyan);
  margin-bottom: 18px;
}

.feature-heading {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   DOWNLOAD CATALOGUE BANNER
   ========================================================================== */
.catalogue-banner-section {
  padding: 40px 0;
}

.catalogue-banner {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(37, 99, 235, 0.1) 100%);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.catalogue-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.banner-text-side {
  max-width: 600px;
  position: relative;
  z-index: 1;
}

.banner-heading {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.banner-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.banner-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}

/* ==========================================================================
   CONTACT / RFQ SECTION
   ========================================================================== */
.contact-section {
  padding: 80px 0 100px;
  position: relative;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  margin-top: 40px;
}

.contact-info-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-detail-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin: 28px 0;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-text-group h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.contact-text-group p,
.contact-text-group a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.contact-text-group a:hover {
  color: var(--accent-cyan);
}

/* Quick Action Buttons in Contact Box */
.direct-channels {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* RFQ Form */
.rfq-form-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

/* ==========================================================================
   PRODUCT DETAIL MODAL
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 8, 16, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 35px rgba(0, 240, 255, 0.15);
  transform: scale(0.92) translateY(20px);
  transition: all var(--transition-normal);
  position: relative;
}

.modal-backdrop.open .modal-container {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.modal-body {
  padding: 36px;
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 36px;
}

.modal-img-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-img-pedestal {
  background: var(--pedestal-bg);
  border: 1px solid var(--pedestal-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 300px;
  box-shadow: var(--pedestal-shadow);
  position: relative;
}

.modal-img-pedestal img {
  max-width: 95%;
  max-height: 95%;
  object-fit: contain;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

.modal-details-col {
  display: flex;
  flex-direction: column;
}

.modal-category {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--accent-cyan);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.modal-title {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

/* Specs Table Inside Modal */
.modal-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
}

.modal-specs-table td {
  padding: 10px 14px;
  font-size: 0.86rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.modal-specs-table td:first-child {
  font-weight: 600;
  color: var(--text-muted);
  width: 38%;
  background: rgba(255, 255, 255, 0.02);
}

.modal-specs-table td:last-child {
  color: var(--text-primary);
}

/* Modal Actions */
.modal-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   PRODUCT COMPARISON FLOATING DRAWER & MODAL
   ========================================================================== */
.compare-drawer {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: rgba(11, 19, 34, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-full);
  padding: 12px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 240, 255, 0.25);
  z-index: 999;
  transition: transform var(--transition-bounce);
}

.compare-drawer.show {
  transform: translateX(-50%) translateY(0);
}

.compare-drawer-items {
  display: flex;
  align-items: center;
  gap: 12px;
}

.compare-thumb-wrapper {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #fff;
  padding: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--accent-blue);
}

.compare-thumb-wrapper img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

.compare-thumb-remove {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ef4444;
  color: #fff;
  border: none;
  font-size: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Compare Matrix Modal */
.compare-matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.compare-matrix-table th,
.compare-matrix-table td {
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.88rem;
}

.compare-matrix-table th {
  background: rgba(0, 0, 0, 0.4);
  color: #fff;
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: rgba(11, 19, 34, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  color: #fff;
  font-size: 0.88rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition-fast);
  pointer-events: auto;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #03060c;
  border-top: 1px solid var(--border-color);
  padding: 70px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 18px 0 20px;
  line-height: 1.6;
}

.footer-col-title {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--accent-cyan);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-link:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   RESPONSIVE DESIGN (BREAKPOINTS)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .stat-item:nth-child(2)::after {
    display: none;
  }
  .contact-grid,
  .calculator-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .modal-grid {
    grid-template-columns: 1fr;
  }
}

/* Laptop & Small Desktop Navigation (993px - 1200px) */
@media (max-width: 1200px) and (min-width: 993px) {
  .nav-links {
    gap: 18px;
  }
  .nav-link {
    font-size: 0.88rem;
  }
  .brand-badge {
    display: none;
  }
}

/* Tablet & Mobile Navigation Breakpoint (<= 992px) */
@media (max-width: 992px) {
  .container {
    padding: 0 16px;
  }
  .site-header {
    height: 70px;
  }
  .nav-inner {
    height: 70px;
  }
  .brand-wrapper {
    gap: 10px;
  }
  .brand-logo {
    height: 38px;
  }
  .brand-badge {
    display: none;
  }
  .nav-links, .nav-actions .btn-download-nav {
    display: none;
  }
  .nav-actions {
    gap: 8px;
  }
  .nav-actions .btn-primary {
    padding: 8px 14px;
    font-size: 0.82rem;
  }
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    font-size: 1.3rem;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: #060b14;
    border-bottom: 2px solid var(--accent-cyan);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.9);
    z-index: 1001;
    gap: 14px;
  }
  .nav-links.mobile-open .nav-link {
    font-size: 1.05rem;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  .hero-section {
    padding: 100px 0 35px;
  }
  .hero-title {
    font-size: 2.1rem;
    line-height: 1.22;
  }
  .hero-description {
    font-size: 0.95rem;
    margin-bottom: 24px;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    gap: 12px;
    margin-bottom: 35px;
  }
  .hero-buttons .btn {
    width: 100%;
  }
  .hero-stats {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 16px;
  }
  .stat-item::after {
    display: none !important;
  }
  .products-grid {
    grid-template-columns: 1fr;
  }
  .filter-top-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .category-tabs {
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }
  .category-btn {
    white-space: nowrap;
  }
  /* Calculator Responsive Styles */
  .calculator-card {
    padding: 20px 16px;
    border-radius: var(--radius-md);
  }
  .calculator-grid {
    gap: 24px;
    margin-top: 16px;
  }
  .calc-results-box {
    padding: 18px 14px;
  }
  .dimension-inputs,
  .form-grid-2 {
    grid-template-columns: 1fr;
  }
  .metrics-row {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .metric-card {
    padding: 12px 8px;
    text-align: center;
  }
  .metric-value {
    font-size: 1.45rem;
  }
  .metric-label {
    font-size: 0.68rem;
    letter-spacing: 0.2px;
  }
  .rec-card {
    padding: 12px 14px;
  }
  /* Product Detail Modal Mobile */
  .modal-backdrop {
    padding: 10px;
  }
  .modal-container {
    max-height: 94vh;
    border-radius: var(--radius-md);
  }
  .modal-body {
    padding: 20px 14px;
  }
  .modal-close-btn {
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    font-size: 1rem;
  }
  .modal-img-pedestal {
    height: 200px;
    padding: 10px;
  }
  .modal-title {
    font-size: 1.35rem;
  }
  .modal-actions {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  .modal-actions .btn {
    width: 100%;
  }
  /* Compare Floating Drawer Mobile */
  .compare-drawer {
    width: calc(100% - 20px);
    max-width: 360px;
    padding: 10px 14px;
    gap: 10px;
    bottom: 12px;
    justify-content: space-between;
  }
  .compare-drawer-actions {
    gap: 8px;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .catalogue-banner {
    padding: 24px 16px;
    text-align: center;
  }
  .banner-actions {
    justify-content: center;
    width: 100%;
    flex-direction: column;
    gap: 10px;
  }
  .banner-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .site-header {
    height: 64px;
    background: rgba(6, 11, 20, 0.98);
  }
  .nav-inner {
    height: 64px;
  }
  .nav-links.mobile-open {
    top: 64px;
  }
  .brand-logo {
    height: 32px;
  }
  .nav-actions .btn-primary {
    display: none; /* Keep header uncluttered so hamburger toggle is comfortably right-aligned */
  }
  .hero-section {
    padding: 90px 0 35px;
  }
  .hero-title {
    font-size: 1.7rem;
  }
  .hero-pill {
    font-size: 0.72rem;
    padding: 4px 10px;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .contact-card, .form-card {
    padding: 20px 14px;
  }
  .metrics-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}