/* ============================================================
   RUBBER GASKETS - Vertex Rubber India | style.css
   Core Design System: Variables, Typography, Grid, Utilities,
   Buttons, Forms, Cards, Navigation, Footer
   ============================================================ */

/* ----- CSS Custom Properties ----- */
:root {
  /* Brand Colors */
  --primary: #0a0a0a;
  --primary-light: #1a1a1a;
  --secondary: #ff6b00;
  --secondary-hover: #e06000;
  --secondary-light: rgba(255, 107, 0, 0.12);
  --accent: #00bcd4;
  --accent-hover: #00a0b5;
  --accent-light: rgba(0, 188, 212, 0.10);

  /* Neutral Palette */
  --white: #ffffff;
  --off-white: #f8f9fa;
  --gray-50: #f1f3f5;
  --gray-100: #e9ecef;
  --gray-200: #dee2e6;
  --gray-300: #ced4da;
  --gray-400: #adb5bd;
  --gray-500: #6c757d;
  --gray-600: #495057;
  --gray-700: #343a40;
  --gray-800: #212529;
  --gray-900: #16181b;

  /* Text Colors */
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-muted: #888;
  --text-light-muted: rgba(255,255,255,0.65);
  --text-dark: #1a1a2e;

  /* Backgrounds */
  --bg-dark: #0a0a0a;
  --bg-section: #0f0f0f;
  --bg-card: #161618;
  --bg-card-hover: #1e1e22;
  --bg-elevated: #1a1a20;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0a0a0a 0%, #1a0a00 50%, #0a0a0a 100%);
  --gradient-card: linear-gradient(145deg, #161618, #1a1a20);
  --gradient-accent: linear-gradient(135deg, #ff6b00, #ff8c00);
  --gradient-cta: linear-gradient(135deg, #ff6b00 0%, #ff8c00 50%, #ff6b00 100%);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(255,107,0,0.15);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 5rem 2rem;
  --container-max: 1240px;
  --container-narrow: 900px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

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

ul, ol {
  list-style: none;
}

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--white);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); letter-spacing: -0.015em; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

p { color: var(--text-secondary); line-height: 1.8; }

.highlight { color: var(--secondary); }
.highlight-accent { color: var(--accent); }

/* ----- Container ----- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ----- Sections ----- */
.section {
  padding: var(--section-padding);
  position: relative;
}

.section-alt {
  background: var(--bg-section);
}

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

.section-dark {
  background: var(--primary);
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3.5rem;
}

.section-header .subtitle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--secondary);
  margin-bottom: 1rem;
  padding: 0.4rem 1.2rem;
  background: var(--secondary-light);
  border-radius: var(--radius-full);
}

.section-header .subtitle i {
  font-size: 0.8rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* ----- Grid Layouts ----- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--gradient-accent);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(255,107,0,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255,107,0,0.4);
  color: var(--white);
}

.btn-secondary {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
  border-color: var(--secondary);
  background: rgba(255,107,0,0.1);
  transform: translateY(-2px);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--secondary);
  border: 1.5px solid var(--secondary);
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem;
}

.btn-outline:hover {
  background: var(--secondary);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 0.6rem 1.4rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
}

/* ----- Forms & Inputs ----- */
.form-group {
  margin-bottom: 1.2rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(255,107,0,0.15);
}

.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 xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23888' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--secondary);
}

.form-error {
  font-size: 0.8rem;
  color: #ff4444;
  margin-top: 0.3rem;
}

/* ----- Cards ----- */
.card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,107,0,0.15);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-light);
  border-radius: var(--radius-md);
  font-size: 1.4rem;
  color: var(--secondary);
  margin-bottom: 1.2rem;
}

/* ----- Product Cards (from blueprint) ----- */
.product-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: rgba(255,107,0,0.2);
}

.product-card-img {
  height: 200px;
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

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

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

.product-card-img.no-img {
  background: linear-gradient(135deg, var(--bg-elevated), var(--bg-card));
}

.product-icon-placeholder {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-light);
  border-radius: var(--radius-full);
  font-size: 1.8rem;
  color: var(--secondary);
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 0.3rem 0.8rem;
  background: var(--gradient-accent);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card-body {
  padding: 1.5rem;
}

.product-card-body h3 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
}

.product-card-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* ----- Icon Cards (materials, why choose) ----- */
.icon-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition-base);
}

.icon-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,107,0,0.15);
  box-shadow: var(--shadow-card);
  background: var(--bg-card-hover);
}

.icon-card .icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-light);
  border-radius: var(--radius-full);
  font-size: 1.5rem;
  color: var(--secondary);
  transition: all var(--transition-base);
}

.icon-card:hover .icon-wrap {
  background: var(--secondary);
  color: var(--white);
  transform: scale(1.1);
}

.icon-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.icon-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.icon-card .temp-range {
  display: inline-block;
  margin-top: 0.8rem;
  padding: 0.3rem 1rem;
  background: rgba(0,188,212,0.1);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

/* ----- Why Choose / Features Grid ----- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.why-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  transition: all var(--transition-base);
}

.why-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255,107,0,0.15);
  box-shadow: var(--shadow-card);
}

.why-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-light);
  border-radius: var(--radius-md);
  font-size: 1.2rem;
  color: var(--secondary);
  margin-bottom: 1rem;
}

.why-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.why-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ----- Tables ----- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.spec-table thead {
  background: var(--bg-elevated);
}

.spec-table th {
  padding: 1rem 1.2rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--secondary);
  border-bottom: 2px solid rgba(255,107,0,0.2);
}

.spec-table td {
  padding: 0.9rem 1.2rem;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.spec-table tbody tr {
  transition: background var(--transition-fast);
}

.spec-table tbody tr:hover {
  background: rgba(255,107,0,0.04);
}

/* ----- FAQ Accordion ----- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-md);
  margin-bottom: 0.8rem;
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: rgba(255,107,0,0.1);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 1.5rem;
  background: transparent;
  border: none;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
}

.faq-question i {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--secondary);
}

.faq-item.active .faq-question {
  color: var(--secondary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-answer-inner {
  padding: 0 1.5rem 1.2rem;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ----- Trust Indicators / Stats ----- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-item {
  text-align: center;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.stat-item:hover {
  border-color: rgba(255,107,0,0.15);
  transform: translateY(-2px);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--secondary);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ----- Badge / Tag ----- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.2rem;
  background: var(--secondary-light);
  color: var(--secondary);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--secondary);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ----- Breadcrumb ----- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 1rem 0;
  font-size: 0.85rem;
}

.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

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

.breadcrumb span {
  color: var(--text-primary);
}

.breadcrumb .sep {
  color: var(--text-muted);
  font-size: 0.7rem;
}

/* ----- Timeline (Manufacturing Process) ----- */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 100%;
  background: linear-gradient(to bottom, var(--secondary), var(--accent));
  border-radius: var(--radius-full);
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 2.5rem;
  position: relative;
}

.timeline-item:nth-child(odd) {
  flex-direction: row;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
}

.timeline-content {
  width: calc(50% - 2rem);
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition-base);
}

.timeline-content:hover {
  border-color: rgba(255,107,0,0.15);
  transform: translateY(-2px);
}

.timeline-content h3 {
  font-size: 1.05rem;
  margin-bottom: 0.3rem;
  color: var(--secondary);
}

.timeline-content p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background: var(--secondary);
  border: 4px solid var(--bg-dark);
  border-radius: 50%;
  z-index: 2;
  top: 1.5rem;
}

.timeline-step {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: -0.5rem;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--secondary);
  background: var(--bg-dark);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  z-index: 3;
}

/* ----- Material Comparison Table ----- */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  overflow-x: auto;
  display: block;
}

.compare-table thead th {
  background: var(--bg-elevated);
  padding: 1rem;
  text-align: center;
  font-weight: 700;
  color: var(--white);
  border-bottom: 2px solid rgba(255,107,0,0.2);
}

.compare-table thead th:first-child {
  text-align: left;
  color: var(--secondary);
}

.compare-table thead th.highlight-col {
  background: linear-gradient(135deg, rgba(255,107,0,0.15), rgba(255,107,0,0.05));
}

.compare-table td {
  padding: 0.8rem 1rem;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  color: var(--text-secondary);
}

.compare-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text-primary);
}

.compare-table tbody tr:hover {
  background: rgba(255,107,0,0.04);
}

.rating-dot {
  display: inline-flex;
  gap: 3px;
}

.rating-dot span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gray-600);
}

.rating-dot span.filled {
  background: var(--secondary);
}

.rating-dot span.half {
  background: linear-gradient(90deg, var(--secondary) 50%, var(--gray-600) 50%);
}

/* ----- CTA Banner ----- */
.cta-banner {
  background: var(--gradient-hero);
  border: 1px solid rgba(255,107,0,0.1);
  border-radius: var(--radius-xl);
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,107,0,0.08), transparent 60%);
  pointer-events: none;
}

.cta-banner h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 1rem;
}

.cta-banner p {
  color: var(--text-light-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ----- Content Sections (for pages) ----- */
.content-section {
  padding: 3rem 0;
}

.content-section h2 {
  margin-bottom: 1.5rem;
}

.content-section h3 {
  margin-bottom: 1rem;
  margin-top: 2rem;
}

.content-section p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.content-section ul, .content-section ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.content-section ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.content-section ul li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-size: 0.6rem;
  top: 0.4rem;
}

.content-section ol li {
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ----- Features List (for material pages) ----- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 1.2rem;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.feature-item:hover {
  border-color: rgba(255,107,0,0.1);
  background: var(--bg-card-hover);
}

.feature-item i {
  color: var(--secondary);
  font-size: 1.1rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.feature-item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.feature-item p {
  font-size: 0.83rem;
  color: var(--text-muted);
}

/* ----- Page Hero (inner pages) ----- */
.page-hero {
  padding: 6rem 2rem 4rem;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255,107,0,0.06), transparent 60%);
  pointer-events: none;
}

.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin-bottom: 1rem;
}

.page-hero p {
  color: var(--text-light-muted);
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1rem;
}

/* ----- Info Box / Highlight ----- */
.info-box {
  background: var(--bg-card);
  border-left: 4px solid var(--secondary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.info-box p {
  color: var(--text-primary);
  margin: 0;
  font-size: 0.95rem;
}

/* ----- Download Buttons ----- */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.download-btn:hover {
  border-color: var(--secondary);
  background: var(--secondary-light);
  color: var(--secondary);
}

.download-btn i {
  font-size: 1.1rem;
}

/* ----- Search Bar ----- */
.search-bar {
  position: relative;
  max-width: 500px;
}

.search-bar input {
  width: 100%;
  padding: 0.8rem 1rem 0.8rem 2.8rem;
  background: var(--bg-card);
  border: 1.5px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-fast);
}

.search-bar input:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(255,107,0,0.15);
}

.search-bar i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ----- Scrollbar ----- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-600);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* ----- Selection ----- */
::selection {
  background: rgba(255,107,0,0.3);
  color: var(--white);
}

/* ----- Utility Classes ----- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.gap-1 { gap: 1rem; }
.gap-2 { gap: 2rem; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

.hidden { display: none !important; }
.visible { display: block !important; }

.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;
}

/* ----- Navigation (Navbar) ----- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.navbar.hidden-nav {
  transform: translateY(-100%);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--white);
}

.nav-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.brand-sub {
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.nav-links a {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--secondary);
  background: var(--secondary-light);
}

.nav-links .nav-cta {
  background: var(--gradient-accent);
  color: var(--white);
  padding: 0.5rem 1.2rem;
  font-weight: 600;
  margin-left: 0.5rem;
}

.nav-links .nav-cta:hover {
  color: var(--white);
  box-shadow: 0 4px 15px rgba(255,107,0,0.3);
  transform: translateY(-1px);
}

/* Hamburger Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

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

/* Mobile Menu */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 360px;
    height: 100vh;
    background: var(--primary);
    flex-direction: column;
    align-items: stretch;
    padding: 5rem 2rem 2rem;
    gap: 0.3rem;
    transition: right var(--transition-base);
    z-index: 1000;
    box-shadow: -4px 0 20px rgba(0,0,0,0.5);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
  }

  .nav-links .nav-cta {
    margin-left: 0;
    margin-top: 0.5rem;
    text-align: center;
    padding: 0.8rem 1rem;
  }

  body.no-scroll {
    overflow: hidden;
  }
}

/* ----- Floating Elements ----- */
.whatsapp-float,
.phone-call-float {
  position: fixed;
  right: 1.5rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--white);
  font-size: 1.3rem;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  z-index: 999;
  transition: all var(--transition-base);
  text-decoration: none;
}

.whatsapp-float {
  bottom: 6rem;
  background: #25d366;
}

.phone-call-float {
  bottom: 1.5rem;
  background: var(--secondary);
}

.whatsapp-float:hover,
.phone-call-float:hover {
  transform: scale(1.1);
  color: var(--white);
}

.back-to-top {
  position: fixed;
  left: 1.5rem;
  bottom: 1.5rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 1rem;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}

/* ----- Footer ----- */
.footer {
  background: var(--primary);
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer-about h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
}

.footer-about h3 span {
  color: var(--secondary);
}

.footer-about p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.footer-social {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.footer-social a:hover {
  background: var(--secondary);
  color: var(--white);
}

.footer-certificates {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.footer-cert {
  padding: 0.2rem 0.6rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.footer h4 {
  font-size: 0.9rem;
  color: var(--white);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links a i {
  font-size: 0.6rem;
  color: var(--secondary);
}

.footer-links a:hover {
  color: var(--secondary);
  padding-left: 0.3rem;
}

.footer-contact p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.footer-contact p i {
  color: var(--secondary);
  margin-top: 0.25rem;
  width: 14px;
  flex-shrink: 0;
}

.footer-contact a {
  color: var(--text-light-muted);
  text-decoration: none;
}

.footer-contact a:hover {
  color: var(--secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 1.5rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.25);
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--secondary);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer-about {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .nav-container {
    height: 56px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .whatsapp-float,
  .phone-call-float {
    width: 44px;
    height: 44px;
    font-size: 1.1rem;
    right: 1rem;
  }

  .whatsapp-float {
    bottom: 5rem;
  }

  .phone-call-float {
    bottom: 1rem;
  }

  .back-to-top {
    left: 1rem;
    bottom: 1rem;
    width: 38px;
    height: 38px;
    font-size: 0.85rem;
  }
}

/* ----- Inner Page Nav ----- */
.page-nav {
  background: var(--bg-section);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding: 0.8rem 0;
  position: sticky;
  top: 70px;
  z-index: 10;
  overflow-x: auto;
}

.page-nav-inner {
  display: flex;
  gap: 0.3rem;
  white-space: nowrap;
}

.page-nav-inner a {
  padding: 0.5rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.page-nav-inner a:hover,
.page-nav-inner a.active {
  color: var(--secondary);
  background: var(--secondary-light);
}