/* ============================================
   IndusBrush — Design System
   Premium Light Corporate Industrial Theme
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

/* --- Design Tokens --- */
:root {
  /* Colors - Light Premium Corporate */
  --bg-primary:     #FFFFFF;
  --bg-secondary:   #F8FAFC;
  --bg-tertiary:    #F1F5F9;
  --bg-card:        #FFFFFF;
  --bg-card-hover:  #FFFFFF;
  
  /* Accents */
  --accent-primary: #1E3A8A; /* Premium Deep Blue */
  --accent-secondary:#E15A24; /* Industrial Rust Orange */
  --accent-hover:   #2563EB; /* Bright Blue */
  --accent-orange-hover: #F97316;
  --accent-glow:    rgba(30, 58, 138, 0.08);
  --accent-subtle:  rgba(30, 58, 138, 0.04);
  
  /* Text */
  --text-primary:   #0F172A; /* Slate 900 */
  --text-secondary: #475569; /* Slate 600 */
  --text-muted:     #64748B; /* Slate 500 */
  --text-accent:    #1E3A8A;
  
  /* Borders */
  --border:         #E2E8F0; /* Slate 200 */
  --border-light:   #F1F5F9; /* Slate 100 */
  --border-focus:   #94A3B8; /* Slate 400 */
  
  /* Indicators */
  --success:        #10B981;
  --warning:        #F59E0B;
  --steel:          #64748B;
  --white:          #FFFFFF;

  /* Typography */
  --font-heading:   'Outfit', 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body:      'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-mono:      'JetBrains Mono', monospace;

  /* Font Sizes */
  --fs-hero:    clamp(2.5rem, 5vw, 4rem);
  --fs-h1:      clamp(2rem, 4vw, 3.25rem);
  --fs-h2:      clamp(1.5rem, 3vw, 2.25rem);
  --fs-h3:      clamp(1.2rem, 2vw, 1.6rem);
  --fs-h4:      1.25rem;
  --fs-body:    1rem;
  --fs-small:   0.875rem;
  --fs-xs:      0.75rem;
  --fs-spec:    0.9375rem;

  /* Spacing */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  4rem;
  --space-4xl:  5.5rem;
  --space-5xl:  7rem;

  /* Layout */
  --max-width:     1200px;
  --max-narrow:    840px;
  --header-height: 88px;
  --border-radius: 16px;
  --radius-sm:     8px;
  --radius-lg:     24px;
  --radius-pill:   999px;

  /* Shadows - Extremely subtle, premium look */
  --shadow-sm:   0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
  --shadow-md:   0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-lg:   0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 10px 20px rgba(30, 58, 138, 0.06);

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast:   150ms;
  --duration-normal: 300ms;
  --duration-slow:   500ms;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

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

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: all var(--duration-fast) var(--ease-out);
}

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

ul, ol {
  list-style: none;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--max-narrow);
}

.section {
  padding: var(--space-4xl) 0;
}

.section--sm {
  padding: var(--space-2xl) 0;
}

.section--dark {
  background-color: var(--bg-secondary);
}

.text-center { text-align: center; }
.text-accent { color: var(--accent-primary); }
.text-muted  { color: var(--text-secondary); }
.text-mono   { font-family: var(--font-mono); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); margin-bottom: var(--space-md); }
h3 { font-size: var(--fs-h3); margin-bottom: var(--space-sm); }
h4 { font-size: var(--fs-h4); margin-bottom: var(--space-xs); }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-md);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 2px;
  background: var(--accent-secondary);
}

.section-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
  margin-top: var(--space-xs);
}

.section-subtitle.centered {
  margin: 0 auto;
}

p + p {
  margin-top: var(--space-md);
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: all var(--duration-normal) var(--ease-out);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  height: 80px;
}

.site-header .container {
  height: 100%;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-xl);
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-image {
  height: 62px;
  width: auto;
  object-fit: contain;
  transition: height var(--duration-normal) var(--ease-out);
}

.site-header.scrolled .logo-image {
  height: 52px !important;
}

.logo-brand {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--accent-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}

.logo-brand span {
  color: var(--accent-secondary);
}

/* --- Navigation --- */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.main-nav a {
  position: relative;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent-primary);
  background: var(--bg-tertiary);
}

.main-nav a.active {
  color: var(--accent-primary);
  background: rgba(30, 58, 138, 0.05);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-sm));
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 260px;
  padding: var(--space-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out),
              transform var(--duration-normal) var(--ease-out);
  z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 10px var(--space-md);
  font-size: var(--fs-small);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  background: transparent;
  transition: all var(--duration-fast);
}

.nav-dropdown-menu a:hover {
  color: var(--accent-primary);
  background: var(--bg-secondary);
  padding-left: calc(var(--space-md) + 4px);
}

.nav-dropdown-menu a .menu-icon {
  width: 20px;
  font-size: 1.1rem;
  text-align: center;
  flex-shrink: 0;
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header-phone {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  color: var(--text-secondary);
  white-space: nowrap;
}

.header-phone .phone-icon {
  font-size: 1.1rem;
  color: var(--accent-secondary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.7rem 1.5rem;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--duration-normal) var(--ease-out);
}

.btn--primary {
  background: var(--accent-secondary);
  color: var(--white);
  box-shadow: 0 4px 10px rgba(225, 90, 36, 0.15);
}

.btn--primary:hover {
  background: var(--accent-orange-hover);
  color: var(--white);
  box-shadow: 0 6px 14px rgba(225, 90, 36, 0.25);
  transform: translateY(-1px);
}

.btn--secondary {
  background: var(--accent-primary);
  color: var(--white);
  box-shadow: 0 4px 10px rgba(30, 58, 138, 0.1);
}

.btn--secondary:hover {
  background: var(--accent-hover);
  color: var(--white);
  box-shadow: 0 6px 14px rgba(30, 58, 138, 0.2);
  transform: translateY(-1px);
}

.btn--tertiary {
  background: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--border);
}

.btn--tertiary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
}

.btn--large {
  padding: 0.95rem 2.2rem;
  font-size: var(--fs-body);
  border-radius: var(--radius-sm);
}

.btn--pill {
  border-radius: var(--radius-pill);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  background-color: var(--bg-secondary);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 30%, rgba(30, 58, 138, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 20% 85%, rgba(225, 90, 36, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--accent-primary);
  background: rgba(30, 58, 138, 0.05);
  border: 1px solid rgba(30, 58, 138, 0.1);
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xl);
}

.hero h1 {
  font-size: var(--fs-hero);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.hero h1 .highlight {
  color: var(--accent-primary);
}

.hero-description {
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-2xl);
  max-width: 640px;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--border);
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-family: var(--font-mono);
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--accent-primary);
}

.hero-stat-label {
  font-size: var(--fs-small);
  color: var(--text-muted);
  margin-top: var(--space-xs);
  font-weight: 500;
}

/* Hero grid pattern background */
.hero-grid {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  opacity: 0.4;
  background-image: radial-gradient(var(--border) 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  pointer-events: none;
}

/* --- Product Cards Grid --- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
}

.product-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  padding: var(--space-2xl);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out);
}

.product-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  color: var(--accent-primary);
  transition: all var(--duration-normal) var(--ease-out);
}

.product-card:hover .product-card-icon {
  background: var(--accent-primary);
  color: var(--white);
  border-color: var(--accent-primary);
}

.product-card h3 {
  font-size: var(--fs-h4);
  margin-bottom: var(--space-sm);
  font-weight: 700;
  color: var(--text-primary);
}

.product-card p {
  color: var(--text-secondary);
  font-size: var(--fs-small);
  line-height: 1.6;
  flex-grow: 1;
}

.product-card-specs {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.product-card-spec {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.product-card-spec strong {
  display: block;
  color: var(--text-primary);
  font-size: var(--fs-small);
  margin-bottom: 2px;
}

.product-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-lg);
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--accent-primary);
}

.product-card-link::after {
  content: '→';
  transition: transform var(--duration-fast);
}

.product-card:hover .product-card-link::after {
  transform: translateX(4px);
}

/* --- Feature Pillars --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.feature-item {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  transition: all var(--duration-normal) var(--ease-out);
}

.feature-item:hover {
  border-color: var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--accent-primary);
  transition: all var(--duration-normal);
}

.feature-item:hover .feature-icon {
  background: var(--accent-primary);
  color: var(--white);
  border-color: var(--accent-primary);
}

.feature-item h3 {
  font-size: var(--fs-body);
  margin-bottom: var(--space-sm);
  font-weight: 700;
}

.feature-item p {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Industries Horizontal Scroll --- */
.industries-scroll {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  padding: var(--space-md) 0;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.industries-scroll::-webkit-scrollbar {
  display: none;
}

.industry-tag {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--text-secondary);
  scroll-snap-align: start;
  transition: all var(--duration-fast);
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.industry-tag:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.industry-tag .tag-icon {
  font-size: 1.15rem;
}

/* --- Stats Counter Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
}

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

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: var(--fs-h1);
  font-weight: 700;
  color: var(--accent-primary);
  line-height: 1;
}

.stat-label {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  font-weight: 500;
}

/* --- Specification Tables --- */
.spec-table-container {
  overflow-x: auto;
  border-radius: var(--border-radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-spec);
}

.spec-table thead {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.spec-table th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.spec-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table tr:hover td {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.spec-table td:first-child {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.spec-table .spec-value {
  font-family: var(--font-mono);
  color: var(--accent-primary);
  font-weight: 600;
}

.spec-table .spec-badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: 4px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

/* --- Material Comparison Table --- */
.material-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-small);
}

.material-table thead {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.material-table thead th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.material-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}

.material-table tr:hover td {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.material-table td:first-child {
  font-weight: 600;
  color: var(--text-primary);
}

.material-type {
  display: inline-block;
  padding: 3px 8px;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid transparent;
}

.material-type--synthetic {
  background: rgba(37, 99, 235, 0.05);
  color: #2563EB;
  border-color: rgba(37, 99, 235, 0.1);
}

.material-type--metal {
  background: rgba(71, 85, 105, 0.05);
  color: #475569;
  border-color: rgba(71, 85, 105, 0.1);
}

.material-type--natural {
  background: rgba(5, 150, 105, 0.05);
  color: #059669;
  border-color: rgba(5, 150, 105, 0.1);
}

.temp-range {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--accent-secondary);
  font-weight: 600;
}

/* --- Application Cards --- */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.application-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-sm);
}

.application-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.application-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: rgba(30, 58, 138, 0.05);
  border-radius: var(--radius-sm);
  color: var(--accent-primary);
  flex-shrink: 0;
}

.application-card h4 {
  font-size: var(--fs-body);
  margin-bottom: var(--space-sm);
  font-weight: 700;
}

.application-card p {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- CTA Section --- */
.cta-section {
  position: relative;
  padding: var(--space-4xl) 0;
  text-align: center;
  overflow: hidden;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(225, 90, 36, 0.03), transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  margin-bottom: var(--space-md);
}

.cta-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  font-size: clamp(1rem, 1.2vw, 1.1rem);
  line-height: 1.6;
}

.cta-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Page Hero (Product / About / Contact) --- */
.page-hero {
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  position: relative;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(30, 58, 138, 0.03), transparent 50%);
  pointer-events: none;
}

.page-hero .section-label {
  margin-bottom: var(--space-sm);
}

.page-hero h1 {
  margin-bottom: var(--space-sm);
  color: var(--text-primary);
}

.page-hero .hero-description {
  margin-bottom: 0;
  max-width: 720px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb .sep {
  color: var(--border);
}

/* --- Bristle Pattern Visual Cards --- */
.pattern-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.pattern-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  box-shadow: var(--shadow-sm);
}

.pattern-card:hover {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pattern-visual {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent-primary);
}

.pattern-card h4 {
  font-size: var(--fs-small);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.pattern-card p {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Channel Size Visual --- */
.channel-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: var(--space-md);
}

.channel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  text-align: center;
  transition: all var(--duration-normal);
  box-shadow: var(--shadow-sm);
}

.channel-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-1px);
}

.channel-number {
  font-family: var(--font-mono);
  font-size: var(--fs-h3);
  font-weight: 700;
  color: var(--accent-primary);
}

.channel-size {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-primary);
  margin-top: var(--space-xs);
  font-weight: 600;
}

.channel-duty {
  font-size: 10px;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

/* --- About Page --- */
.process-timeline {
  display: flex;
  gap: 0;
  align-items: flex-start;
  overflow-x: auto;
  padding: var(--space-lg) 0;
}

.process-step {
  flex: 1;
  min-width: 180px;
  text-align: center;
  position: relative;
  padding: 0 var(--space-md);
}

.process-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -8px;
  top: 24px;
  font-size: 1.25rem;
  color: var(--accent-secondary);
  z-index: 1;
}

.process-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
  font-family: var(--font-mono);
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--accent-primary);
  background: rgba(30, 58, 138, 0.05);
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
}

.process-step h4 {
  font-size: var(--fs-small);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.process-step p {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Contact / Quote Form --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-3xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.form-label .required {
  color: var(--accent-secondary);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px var(--space-md);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  color: var(--text-primary);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--duration-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.08);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.file-upload {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  background: var(--bg-secondary);
  transition: all var(--duration-fast);
}

.file-upload:hover {
  border-color: var(--accent-primary);
  background: rgba(30, 58, 138, 0.02);
}

.file-upload input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-upload-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--accent-primary);
}

.file-upload-text {
  font-size: var(--fs-small);
  color: var(--text-secondary);
}

.file-upload-text strong {
  color: var(--accent-primary);
}

/* Contact Info sidebar */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info-card {
  padding: var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
}

.contact-info-card h4 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--fs-body);
  margin-bottom: var(--space-md);
  font-weight: 700;
}

.contact-info-card h4 .info-icon {
  color: var(--accent-secondary);
}

.contact-info-card p,
.contact-info-card a {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  line-height: 1.7;
}

.contact-info-card a:hover {
  color: var(--accent-primary);
}

.response-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  background: rgba(16, 185, 129, 0.05);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-sm);
  font-size: var(--fs-small);
  font-weight: 600;
  color: #059669;
  justify-content: center;
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.4fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand .logo-brand {
  font-size: 1.35rem;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 280px;
}

.footer-heading {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
}

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

.footer-links a {
  font-size: var(--fs-small);
  color: var(--text-secondary);
  padding: 2px 0;
  transition: all var(--duration-fast);
}

.footer-links a:hover {
  color: var(--accent-primary);
  padding-left: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--fs-small);
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.footer-contact-item .fc-icon {
  color: var(--accent-secondary);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
}

.footer-copyright {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* --- WhatsApp Floating Button --- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25D366;
  color: white;
  font-size: 1.5rem;
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
  text-decoration: none;
  transition: transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-fast);
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
  color: white;
}

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

/* --- Mobile Menu --- */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--text-primary);
  font-size: 1.5rem;
}

.mobile-nav {
  display: none;
}

/* --- Hamburger Icon --- */
.hamburger {
  width: 22px;
  height: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Problem Statement Block --- */
.problem-block {
  position: relative;
  padding: var(--space-xl);
  background: var(--bg-secondary);
  border-left: 4px solid var(--accent-secondary);
  border-radius: var(--radius-sm);
  border-top: 1px solid var(--border);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.problem-block p {
  font-size: clamp(1.02rem, 1.3vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: italic;
  font-weight: 500;
}

/* --- Misc Utilities --- */
.divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-2xl) 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: 4px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.badge--success {
  background: rgba(16, 185, 129, 0.05);
  color: #059669;
  border-color: rgba(16, 185, 129, 0.1);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.text-block h2 {
  margin-bottom: var(--space-sm);
}

.text-block p {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.text-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.text-block ul li {
  padding-left: var(--space-xl);
  position: relative;
  color: var(--text-secondary);
  font-size: var(--fs-small);
  line-height: 1.6;
}

.text-block ul li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-secondary);
  font-weight: 700;
}

/* Map container */
.map-container {
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16 / 9;
}

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