/* ==========================================================================
   INDEX POP VAULT | Design System: AI Interface & Editorial 8-Col Grid
   Color Palette: Gold Onyx
   ========================================================================== */

:root {
  --bg-core: #080705;
  --bg-surface: #100F0C;
  --bg-elevated: #17150F;
  --bg-card: #14120D;
  --border-subtle: #2A2620;
  --border-active: #4A4234;
  --accent-gold: #D4AF37;
  --accent-gold-glow: rgba(212, 175, 55, 0.15);
  --accent-gold-dim: #997E24;
  --text-primary: #FBF7EC;
  --text-secondary: #B5AC98;
  --text-muted: #756D5E;
  --status-live: #4EBD83;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --max-width: 1240px;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Newsreader", "Playfair Display", Georgia, serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-core);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(212, 175, 55, 0.06), transparent),
    linear-gradient(rgba(42, 38, 32, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 38, 32, 0.15) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  background-position: 0 0, 0 0, 0 0;
}

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

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: #F0CF65;
}

/* --- Container & 8-Column Editorial Grid --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.grid-8 {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 16px;
}

.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-5 { grid-column: span 5; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }
.col-2 { grid-column: span 2; }

@media (max-width: 992px) {
  .grid-8 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .col-8, .col-6, .col-5 { grid-column: span 4; }
  .col-4, .col-3 { grid-column: span 2; }
  .col-2 { grid-column: span 2; }
}

@media (max-width: 640px) {
  .grid-8 {
    grid-template-columns: 1fr;
  }
  .col-8, .col-6, .col-5, .col-4, .col-3, .col-2 { grid-column: span 1; }
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* --- Non-Sticky Slim Header (Max 56px) --- */
.site-header {
  position: relative;
  height: 56px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-primary);
  font-weight: 700;
}

.brand-icon {
  width: 22px;
  height: 22px;
  stroke: var(--accent-gold);
  fill: none;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-desktop a {
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 6px 4px;
  position: relative;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--accent-gold);
}

.nav-desktop a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-gold);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  background: rgba(78, 189, 131, 0.1);
  color: var(--status-live);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(78, 189, 131, 0.25);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--status-live);
  box-shadow: 0 0 8px var(--status-live);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
}

.mobile-drawer {
  display: none;
  position: absolute;
  top: 56px;
  left: 0;
  width: 100%;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-active);
  padding: 20px;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 16px 32px rgba(0,0,0,0.8);
}

.mobile-drawer.open {
  display: flex;
}

@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .mobile-menu-btn { display: block; }
}

/* --- Telemetry HUD / Hero Section --- */
.hero-section {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.telemetry-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.telemetry-strip span {
  color: var(--accent-gold);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.hero-title em {
  font-style: italic;
  color: var(--accent-gold);
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 820px;
  margin-bottom: 28px;
}

/* --- NOVEL CARD ARCHITECTURE: Modular Data-Grid Card --- */
.card-data-grid {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card-data-grid:hover {
  transform: translateY(-3px);
  border-color: var(--accent-gold-dim);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(212, 175, 55, 0.2);
}

.card-header-telemetry {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.tele-metric {
  display: flex;
  flex-direction: column;
}

.tele-label {
  color: var(--text-muted);
  font-size: 0.62rem;
}

.tele-value {
  color: var(--accent-gold);
  font-weight: 600;
}

.card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, opacity 0.3s ease;
  opacity: 0.85;
}

.card-data-grid:hover .card-media img {
  transform: scale(1.04);
  opacity: 1;
}

.card-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(16, 15, 12, 0.85);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.card-body {
  padding: 20px 18px 16px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-route-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-gold);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-weight: 500;
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}

.card-footer-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.btn-telemetry {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-telemetry:hover {
  background: var(--accent-gold);
  color: #080705;
  border-color: var(--accent-gold);
  font-weight: 600;
}

.btn-primary {
  background: var(--accent-gold);
  color: #080705;
  border: 1px solid var(--accent-gold);
  font-weight: 600;
}

.btn-primary:hover {
  background: #F0CF65;
  color: #080705;
}

/* --- Section Headings --- */
.section-header {
  margin: 48px 0 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--accent-gold);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 400;
}

/* --- In-Depth Detail Layout (Sub-pages) --- */
.article-header {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.telemetry-dossier {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 32px 0;
}

.dossier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.dossier-item {
  background: var(--bg-elevated);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-gold);
}

.dossier-item .kpi-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.dossier-item .kpi-val {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--text-primary);
  font-weight: 600;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--text-primary);
  margin: 36px 0 16px;
  font-weight: 500;
}

.article-content h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text-primary);
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.highlight-box {
  background: rgba(212, 175, 55, 0.04);
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 28px 0;
}

/* --- Data Table Styling (Legal & Telemetry) --- */
.data-table-wrapper {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

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

.data-table th {
  background: var(--bg-surface);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent-gold);
  border-bottom: 1px solid var(--border-subtle);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

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

.data-table tr:nth-child(even) {
  background: rgba(23, 21, 15, 0.5);
}

/* --- Interactive Forms (Contact & Calculator) --- */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--bg-core);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 2px var(--accent-gold-glow);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

/* --- Cookie Consent Banner (Persistent) --- */
.cookie-banner {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 32px);
  max-width: 980px;
  background: #14120DEE;
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.85);
  z-index: 999;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.cookie-banner.show {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.cookie-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 580px;
}

.cookie-actions {
  display: flex;
  gap: 10px;
}

/* --- Footer --- */
.site-footer {
  margin-top: auto;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0 32px;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.footer-top {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--accent-gold);
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--text-secondary);
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  gap: 12px;
}