/* =====================================================
   RETRO HOME COMPUTERS ARCHIVE
   Design System — style.css
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@300;400;500;600&family=Space+Mono:wght@400;700&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  /* Colour Palette */
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #14141e;
  --bg-card-hover: #1a1a28;
  --surface: #1e1e2e;
  --surface-hover: #252540;
  --border: rgba(255, 255, 255, 0.07);
  --border-bright: rgba(255, 255, 255, 0.15);

  /* Brand Colours */
  --amber: #f5a623;
  --amber-glow: rgba(245, 166, 35, 0.15);
  --amber-dim: #b8791a;
  --green-crt: #00ff41;
  --green-crt-dim: rgba(0, 255, 65, 0.6);
  --cyan: #00d4ff;
  --purple: #a855f7;
  --red-retro: #ff3b3b;

  /* Typography Colours */
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #606075;
  --text-amber: var(--amber);
  --text-green: var(--green-crt);

  /* Typography */
  --font-heading: 'Space Grotesk', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --font-display: 'Space Mono', monospace;

  /* 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: 6rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-amber: 0 0 30px rgba(245, 166, 35, 0.2);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-card-hover: 0 20px 60px rgba(0, 0, 0, 0.7), 0 0 40px rgba(245, 166, 35, 0.08);
}

[data-theme="light"] {
  /* Colour Palette */
  --bg-primary: #e8e3d3;
  --bg-secondary: #dfd9c6;
  --bg-card: #f4f0e6;
  --bg-card-hover: #ffffff;
  --surface: #d8d1bc;
  --surface-hover: #cec6b0;
  --border: rgba(0, 0, 0, 0.12);
  --border-bright: rgba(0, 0, 0, 0.25);

  /* Brand Colours */
  --amber: #b24112;
  --amber-glow: rgba(178, 65, 18, 0.15);

  /* Typography Colours */
  --text-primary: #222222;
  --text-secondary: #555555;
  --text-muted: #777777;

  /* Shadows adjustments for light mode */
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-card-hover: 0 20px 60px rgba(0, 0, 0, 0.2), 0 0 40px rgba(178, 65, 18, 0.1);
}

[data-theme="light"] .nav {
  background: rgba(232, 227, 211, 0.9);
}

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

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

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

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.03) 2px,
      rgba(0, 0, 0, 0.03) 4px);
  pointer-events: none;
  z-index: 9999;
}

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

.mono,
code {
  font-family: var(--font-mono);
}

.display-text {
  font-family: var(--font-display);
}

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

a:hover {
  color: var(--text-primary);
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--surface);
  border-radius: 3px;
}

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

/* =====================================================
   NAVIGATION
   ===================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition-base);
}

.nav.scrolled {
  padding: var(--space-sm) var(--space-2xl);
  border-bottom-color: var(--border-bright);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
  background: var(--amber);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.nav-brand-text {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.1;
}

.nav-brand-text span {
  display: block;
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--amber);
}

.nav-search {
  position: relative;
}

.nav-search input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: var(--space-sm) var(--space-md) var(--space-sm) 36px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  width: 220px;
  transition: all var(--transition-base);
  outline: none;
}

.nav-search input::placeholder {
  color: var(--text-muted);
}

.nav-search input:focus {
  background: var(--surface-hover);
  border-color: var(--amber);
  width: 280px;
  box-shadow: 0 0 0 3px var(--amber-glow);
}

.nav-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
  pointer-events: none;
}

/* =====================================================
   HERO SECTION
   ===================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 60px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('images/hero-banner.png') center/cover no-repeat;
  filter: brightness(0.25) saturate(0.8);
  transform: scale(1.05);
  transition: transform 10s ease;
}

.hero:hover .hero-bg {
  transform: scale(1.0);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center top, rgba(245, 166, 35, 0.08) 0%, transparent 60%),
    linear-gradient(to bottom, transparent 40%, var(--bg-primary) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  padding: 0 var(--space-xl);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(245, 166, 35, 0.1);
  border: 1px solid rgba(245, 166, 35, 0.3);
  border-radius: 100px;
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--space-xl);
  animation: fadeInDown 0.6s ease;
}

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

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.7s ease 0.1s both;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--amber), #ff8c00, var(--amber));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
  animation: fadeInUp 0.7s ease 0.2s both;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.7s ease 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: 100px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--amber);
  color: #0a0a0f;
}

.btn-primary:hover {
  background: #fff3d6;
  color: #0a0a0f;
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(245, 166, 35, 0.4);
}

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

.btn-secondary:hover {
  background: var(--surface);
  border-color: var(--amber);
  color: var(--amber);
  transform: translateY(-2px);
}

.hero-stats {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-3xl);
  animation: fadeInUp 0.7s ease 0.5s both;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--amber);
  display: block;
}

.hero-stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  animation: fadeIn 1s ease 1s both;
}

.scroll-arrow {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: bounceDown 2s infinite;
}

@keyframes bounceDown {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(6px);
  }
}

/* =====================================================
   TIMELINE SECTION
   ===================================================== */

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

.section-header {
  text-align: center;
  padding: 0 var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--amber);
  margin-bottom: var(--space-md);
  display: block;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-bottom: var(--space-md);
}

.section-subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Decade Filter Bar */
.filter-bar {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  padding: 0 var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--amber);
  color: #0a0a0f;
  border-color: var(--amber);
  box-shadow: 0 4px 20px rgba(245, 166, 35, 0.3);
}

/* Timeline Container */
.timeline-container {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* The vertical timeline line */
.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom,
      transparent,
      var(--amber) 5%,
      var(--amber) 95%,
      transparent);
  transform: translateX(-50%);
  opacity: 0.3;
}

/* Decade markers */
.decade-marker {
  text-align: center;
  position: relative;
  z-index: 2;
  margin: var(--space-3xl) 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.decade-marker::before,
.decade-marker::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-bright));
}

.decade-marker::after {
  background: linear-gradient(to left, transparent, var(--border-bright));
}

.decade-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  white-space: nowrap;
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg-secondary);
}

/* Timeline Items */
.timeline-items {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
}

/* Computer Card */
.computer-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  text-decoration: none;
  display: block;
}

.computer-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.computer-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-bright);
  box-shadow: var(--shadow-card-hover);
  background: var(--bg-card-hover);
}

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

.card-image {
  position: relative;
  height: 240px;
  overflow: hidden;
  background: var(--bg-secondary);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  filter: saturate(0.9);
}

.computer-card:hover .card-image img {
  transform: scale(1.08);
  filter: saturate(1.1);
}

.card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-secondary), var(--surface));
  color: var(--text-muted);
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.card-image-placeholder .placeholder-icon {
  font-size: 3rem;
  opacity: 0.4;
}

.card-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-bright);
  border-radius: 100px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--amber);
  font-weight: 600;
}

.card-country {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.card-body {
  padding: var(--space-lg);
  position: relative;
  z-index: 1;
}

.card-year-line {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.card-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--amber);
  font-weight: 600;
}

.card-type {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.card-separator {
  width: 3px;
  height: 3px;
  background: var(--border-bright);
  border-radius: 50%;
}

.card-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.computer-card:hover .card-name {
  color: var(--amber);
}

.card-manufacturer {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: var(--space-md);
}

.card-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-lg);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.card-spec {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.card-spec-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.card-spec-value {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.card-arrow {
  position: absolute;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 32px;
  height: 32px;
  background: var(--surface);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: all var(--transition-base);
  z-index: 1;
}

.computer-card:hover .card-arrow {
  background: var(--amber);
  color: #0a0a0f;
  transform: translateX(4px);
}

/* No results message */
.no-results {
  text-align: center;
  padding: var(--space-4xl);
  color: var(--text-muted);
  font-family: var(--font-mono);
  grid-column: 1 / -1;
  display: none;
}

.no-results.visible {
  display: block;
}

/* =====================================================
   FOOTER
   ===================================================== */

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-3xl) var(--space-2xl);
  margin-top: var(--space-4xl);
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-3xl);
  align-items: start;
}

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

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-primary);
}

.footer-brand-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 280px;
}

.footer-crt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--green-crt-dim);
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: rgba(0, 255, 65, 0.03);
  border: 1px solid rgba(0, 255, 65, 0.1);
  border-radius: var(--radius-sm);
}

.footer-crt::before {
  content: '> ';
  color: var(--green-crt);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.footer-links-group h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin-bottom: var(--space-md);
}

.footer-links-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links-group a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-links-group a:hover {
  color: var(--amber);
}

.footer-bottom {
  max-width: 1400px;
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-bottom p {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* =====================================================
   DETAIL PAGE STYLES
   ===================================================== */

/* Back navigation */
.back-nav {
  padding: calc(60px + var(--space-xl)) var(--space-2xl) var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

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

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

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

/* Detail Hero */
.detail-hero {
  position: relative;
  background: var(--bg-secondary);
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.detail-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-2xl) var(--space-3xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.detail-hero-content {
  position: relative;
  z-index: 1;
}

.detail-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.detail-year-badge {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--amber);
  background: var(--amber-glow);
  border: 1px solid rgba(245, 166, 35, 0.3);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.1em;
}

.detail-type-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.detail-title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  line-height: 1.1;
}

.detail-manufacturer {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.detail-tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: italic;
  border-left: 3px solid var(--amber);
  padding-left: var(--space-md);
  margin-bottom: var(--space-xl);
}

.detail-hero-image {
  position: relative;
  z-index: 1;
}

.detail-hero-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}

.detail-hero-image .image-placeholder {
  aspect-ratio: 1;
  background: var(--surface);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.image-placeholder .icon {
  font-size: 5rem;
  opacity: 0.3;
}

.detail-hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background: radial-gradient(ellipse at right, var(--amber), transparent 70%);
}

/* Detail Body */
.detail-body {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl);
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

/* Sections */
.detail-section {
  margin-bottom: var(--space-3xl);
}

.detail-section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--amber);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.detail-section-label::after {
  content: '';
  height: 1px;
  background: var(--border);
  flex: 1;
}

.detail-section h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.detail-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

/* Highlights List */
.highlights-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.highlights-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.5;
  padding: var(--space-md);
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  transition: border-color var(--transition-fast);
}

.highlights-list li:hover {
  border-color: var(--amber);
}

.highlight-icon {
  color: var(--amber);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Sidebar Specs */
.detail-sidebar {
  position: sticky;
  top: 80px;
}

.specs-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.specs-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.spec-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

.spec-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.spec-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.spec-value {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.4;
}

/* Famous Users & Games */
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 4px 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tag:hover {
  border-color: var(--amber);
  color: var(--amber);
}

/* Navigation between computers */
.computer-nav {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-xl) var(--space-2xl);
}

.computer-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: var(--space-xl);
}

.computer-nav-btn {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-xl);
  text-decoration: none;
  transition: all var(--transition-base);
  flex: 1;
  max-width: 340px;
}

.computer-nav-btn:hover {
  border-color: var(--amber);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.computer-nav-btn.prev {
  flex-direction: row;
}

.computer-nav-btn.next {
  flex-direction: row-reverse;
  text-align: right;
  margin-left: auto;
}

.nav-btn-icon {
  font-size: 1.5rem;
  color: var(--amber);
  flex-shrink: 0;
}

.nav-btn-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-btn-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.nav-btn-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.nav-btn-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--amber);
}

/* =====================================================
   ANIMATIONS
   ===================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Staggered reveals */
.reveal:nth-child(2) {
  transition-delay: 0.1s;
}

.reveal:nth-child(3) {
  transition-delay: 0.2s;
}

.reveal:nth-child(4) {
  transition-delay: 0.3s;
}

.reveal:nth-child(5) {
  transition-delay: 0.4s;
}

.reveal:nth-child(6) {
  transition-delay: 0.1s;
}

.reveal:nth-child(7) {
  transition-delay: 0.2s;
}

.reveal:nth-child(8) {
  transition-delay: 0.3s;
}

.reveal:nth-child(9) {
  transition-delay: 0.1s;
}

.reveal:nth-child(10) {
  transition-delay: 0.2s;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-width: 1024px) {
  .detail-body {
    grid-template-columns: 1fr;
  }

  .detail-sidebar {
    position: static;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
}

@media (max-width: 768px) {
  .nav {
    padding: var(--space-md);
  }

  .nav-links {
    display: none;
  }

  .nav-search input {
    width: 160px;
  }

  .nav-search input:focus {
    width: 200px;
  }

  .hero-stats {
    gap: var(--space-xl);
  }

  .hero-stat-number {
    font-size: 1.4rem;
  }

  .timeline-items {
    grid-template-columns: 1fr;
  }

  .detail-hero-inner {
    grid-template-columns: 1fr;
  }

  .detail-hero-image {
    order: -1;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .computer-nav-inner {
    flex-direction: column;
  }

  .computer-nav-btn {
    max-width: none;
  }

  .computer-nav-btn.next {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    gap: var(--space-lg);
  }

  .filter-bar {
    gap: var(--space-xs);
  }

  .filter-btn {
    font-size: 0.7rem;
    padding: 6px 12px;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.text-amber {
  color: var(--amber);
}

.text-green {
  color: var(--green-crt);
}

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

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

.font-mono {
  font-family: var(--font-mono);
}

.hidden {
  display: none !important;
}

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

/* ---- Enhanced Context Sections ---- */
.detail-context-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
  margin-top: var(--space-xl);
}

.context-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  height: 100%;
}

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

.context-box h3 {
  font-size: 0.9rem;
  color: var(--amber);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.context-box p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 0;
  color: var(--text-secondary);
}

/* ---- Software Showcase ---- */
.software-showcase {
  margin-top: var(--space-xl);
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.screenshot-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  transition: all var(--transition-base);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screenshot-item:hover {
  transform: scale(1.02);
  border-color: var(--amber);
  box-shadow: 0 10px 40px rgba(245, 166, 35, 0.2);
}

.screenshot-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.1) brightness(0.9);
}

.screenshot-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-md);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.95), transparent);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-align: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.screenshot-item:hover .screenshot-caption {
  opacity: 1;
}

@media (max-width: 768px) {
  .detail-context-grid {
    grid-template-columns: 1fr;
  }
}