/* HeliPedia - Global Aerospace Encyclopedia Stylesheet */
:root {
  --bg-primary: #0a0f1d;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(30, 41, 59, 0.95);
  --bg-glass: rgba(15, 23, 42, 0.75);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(0, 210, 255, 0.4);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-cyan: #00d2ff;
  --accent-cyan-glow: rgba(0, 210, 255, 0.25);
  --accent-amber: #f59e0b;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-blue: #3b82f6;

  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px var(--accent-cyan-glow);
}

/* Light Theme Mode */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-color: #e2e8f0;
  --border-hover: #0284c7;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent-cyan: #0284c7;
  --accent-cyan-glow: rgba(2, 132, 199, 0.15);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 210, 255, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

/* RTL Support for Arabic */
[dir="rtl"] {
  text-align: right;
  direction: rtl;
}

[dir="rtl"] .search-input {
  padding-left: 1rem;
  padding-right: 2.75rem;
}

[dir="rtl"] .search-icon {
  left: auto;
  right: 1rem;
}

[dir="rtl"] .spec-bar-fill {
  transform-origin: right center;
}

/* Container */
.container {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-logo svg {
  width: 36px;
  height: 36px;
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 8px var(--accent-cyan));
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 30%, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .brand-name {
  background: linear-gradient(135deg, #0f172a 30%, var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-select-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.lang-select {
  appearance: none;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.45rem 2rem 0.45rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: var(--transition-fast);
}

.lang-select:hover, .lang-select:focus {
  border-color: var(--accent-cyan);
}

.theme-toggle-btn, .fav-toggle-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.theme-toggle-btn:hover, .fav-toggle-btn:hover {
  border-color: var(--accent-cyan);
}

/* Hero Section */
.hero-section {
  padding: 3rem 0 2rem;
  text-align: center;
  position: relative;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.hero-tagline {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 2rem;
}

.stats-ribbon {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.stat-pill {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.4rem 1.2rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stat-pill strong {
  color: var(--accent-cyan);
}

/* Search & Filter Bar */
.filter-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-card);
}

.search-box-row {
  position: relative;
  margin-bottom: 1rem;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem 0.85rem 2.85rem;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px var(--accent-cyan-glow);
}

.filter-controls-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.filter-select {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-select:focus, .filter-select:hover {
  border-color: var(--accent-cyan);
}

.filter-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.reset-filters-btn {
  background: transparent;
  border: none;
  color: var(--accent-cyan);
  cursor: pointer;
  font-size: 0.85rem;
  text-decoration: underline;
}

/* Ad Containers (AdSense compliant) */
.ad-slot-wrapper {
  margin: 1.5rem auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ad-label {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  font-weight: 600;
}

.ad-box {
  background: rgba(0, 0, 0, 0.2);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  min-height: 90px;
  width: 100%;
  max-width: 970px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

[data-theme="light"] .ad-box {
  background: #f1f5f9;
}

/* Helicopter Grid */
.helicopters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

/* Helicopter Card */
.heli-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  backdrop-filter: blur(8px);
  position: relative;
}

.heli-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.card-header-visual {
  height: 170px;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.95), rgba(10, 15, 29, 0.7));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem;
  overflow: hidden;
}

.card-badge-role {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: rgba(0, 210, 255, 0.15);
  border: 1px solid var(--accent-cyan);
  color: var(--accent-cyan);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

[dir="rtl"] .card-badge-role {
  left: auto;
  right: 0.75rem;
}

.card-badge-status {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.card-badge-status.retired {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.card-badge-status.prototype {
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

[dir="rtl"] .card-badge-status {
  right: auto;
  left: 0.75rem;
}

.card-silhouette {
  width: 130px;
  height: 90px;
  color: var(--accent-cyan);
  opacity: 0.85;
  transition: transform var(--transition-normal);
  filter: drop-shadow(0 4px 12px rgba(0, 210, 255, 0.3));
}

.heli-card:hover .card-silhouette {
  transform: scale(1.08) rotate(-2deg);
}

.card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-meta-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-country-flag {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.card-mfr {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Quick Specs Bars */
.card-specs-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
}

[data-theme="light"] .card-specs-list {
  background: #f8fafc;
}

.spec-item {
  display: flex;
  flex-direction: column;
}

.spec-key {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.spec-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}

.btn-primary {
  flex: 1;
  background: var(--accent-cyan);
  color: #000;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: var(--transition-fast);
}

.btn-primary:hover {
  background: #38bdf8;
  box-shadow: 0 0 12px var(--accent-cyan);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.btn-secondary.active {
  background: rgba(0, 210, 255, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Modal View */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-backdrop.open {
  display: flex;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-card);
  position: relative;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 10;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.25rem;
}

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

.modal-body {
  padding: 1.5rem;
}

.modal-section-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 1.5rem 0 0.75rem;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.4rem;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

.specs-table th, .specs-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

[dir="rtl"] .specs-table th, [dir="rtl"] .specs-table td {
  text-align: right;
}

.specs-table th {
  color: var(--text-muted);
  font-weight: 600;
  width: 38%;
}

.specs-table td {
  color: var(--text-primary);
  font-weight: 500;
}

.variants-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.variant-tag {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* Comparison Dock (Sticky bottom) */
.comparison-dock {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%) translateY(150%);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  padding: 0.75rem 1.25rem;
  z-index: 800;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px var(--accent-cyan-glow);
  transition: transform var(--transition-normal);
}

.comparison-dock.active {
  transform: translateX(-50%) translateY(0);
}

.dock-items-preview {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dock-chip {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Comparison Table View */
.comparison-grid {
  display: grid;
  grid-template-columns: 200px repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  overflow-x: auto;
  margin-top: 1rem;
}

/* CMP Banner (Consent Management Platform - Google Funding Choices compliant) */
.cmp-banner-overlay {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--accent-cyan);
  padding: 1.25rem;
  z-index: 1200;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.7);
  display: none;
}

.cmp-banner-overlay.show {
  display: block;
}

.cmp-banner-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.cmp-text-block h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--accent-cyan);
}

.cmp-text-block p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 800px;
}

.cmp-actions-block {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-cmp {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-cmp-accept {
  background: var(--accent-cyan);
  color: #000;
}

.btn-cmp-reject {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-cmp-settings {
  background: transparent;
  color: var(--text-muted);
  text-decoration: underline;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 1.5rem;
  color: var(--text-secondary);
}

.footer-top {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-col h4 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-links-list {
  list-style: none;
}

.footer-links-list li {
  margin-bottom: 0.5rem;
}

.footer-links-list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: stretch;
  }
  
  .header-controls {
    justify-content: space-between;
  }

  .filter-controls-row {
    grid-template-columns: 1fr;
  }

  .comparison-dock {
    width: 92%;
    flex-direction: column;
    gap: 0.75rem;
  }

  .cmp-banner-content {
    flex-direction: column;
    align-items: stretch;
  }
}