/* ============================================================
   DIGITAL GATHERING PLACES — TIMELINE SITE
   Art direction: retro-terminal meets editorial archive
   Fonts: VT323 (display), IBM Plex Mono (data), IBM Plex Sans (body)
   Palette: Dark phosphor-screen with neon accent colours per platform
   ============================================================ */

/* ── DESIGN TOKENS ─────────────────────────────────────────── */
:root,
[data-theme="light"] {
  --color-bg:            #f4f2ed;
  --color-surface:       #faf9f6;
  --color-surface-2:     #ffffff;
  --color-surface-offset: #ebe8e2;
  --color-border:        #d8d4cc;
  --color-divider:       #e4e0d8;

  --color-text:          #1a1814;
  --color-text-muted:    #6b6860;
  --color-text-faint:    #a8a7a3;
  --color-text-inverse:  #f4f2ed;

  --color-accent:        #00b89c;
  --color-accent-hover:  #008f79;
  --color-accent-glow:   rgba(0, 184, 156, 0.2);

  --color-spine:         #c8c4bc;
  --color-node-ring:     #9a9892;

  --font-display:        'VT323', 'Courier New', monospace;
  --font-mono:           'IBM Plex Mono', 'Courier New', monospace;
  --font-body:           'IBM Plex Sans', 'Helvetica Neue', sans-serif;

  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl:  clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.09);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-default: 1100px;
}

[data-theme="dark"] {
  --color-bg:             #0d0f0e;
  --color-surface:        #131614;
  --color-surface-2:      #181b19;
  --color-surface-offset: #1e2220;
  --color-border:         #2a2f2c;
  --color-divider:        #222724;

  --color-text:          #d4d8d4;
  --color-text-muted:    #7a8078;
  --color-text-faint:    #4a504a;
  --color-text-inverse:  #0d0f0e;

  --color-accent:        #00d4aa;
  --color-accent-hover:  #00b89c;
  --color-accent-glow:   rgba(0, 212, 170, 0.15);

  --color-spine:         #2a3030;
  --color-node-ring:     #3a4540;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0d0f0e;
    --color-surface:        #131614;
    --color-surface-2:      #181b19;
    --color-surface-offset: #1e2220;
    --color-border:         #2a2f2c;
    --color-divider:        #222724;
    --color-text:          #d4d8d4;
    --color-text-muted:    #7a8078;
    --color-text-faint:    #4a504a;
    --color-text-inverse:  #0d0f0e;
    --color-accent:        #00d4aa;
    --color-accent-hover:  #00b89c;
    --color-accent-glow:   rgba(0, 212, 170, 0.15);
    --color-spine:         #2a3030;
    --color-node-ring:     #3a4540;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  }
}

/* ── BASE RESET ─────────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}
img, svg { display: block; max-width: 100%; }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
p, li { max-width: 70ch; text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.15; }
::selection { background: var(--color-accent-glow); color: var(--color-text); }

/* ── CURSOR BLINK ANIMATION ─────────────────────────────────── */
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }
.cursor-blink { animation: blink 1.2s step-end infinite; }
@keyframes scanline {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes slideIn { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: none; } }
@keyframes nodeGlow { 0%,100% { box-shadow: 0 0 0 0 var(--node-color,var(--color-accent)); } 60% { box-shadow: 0 0 0 8px transparent; } }

/* ── HEADER ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.logo-lockup {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.logo-icon { width: 32px; height: 32px; color: var(--color-accent); flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; gap: 0; }
.logo-title {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.logo-sub {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full, 9999px);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: transparent;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-glow);
}
.theme-toggle {
  width: 34px; height: 34px;
  border-radius: var(--radius-full, 9999px);
  border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition);
  margin-left: var(--space-2);
}
.theme-toggle:hover { color: var(--color-accent); border-color: var(--color-accent); background: var(--color-accent-glow); }

/* ── HERO ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(var(--space-16), 10vw, var(--space-24)) var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  max-width: 100%;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 60% 50% at 20% 50%, var(--color-accent-glow) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 20%, rgba(167, 139, 250, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.hero-scanlines {
  position: absolute;
  inset: 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: 0;
}
.hero-content, .hero-terminal { position: relative; z-index: 1; }
.hero-content { max-width: 560px; }
.hero-pre {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.04em;
  margin-bottom: var(--space-4);
  opacity: 0.8;
}
.hero-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-text);
  line-height: 1.05;
  margin-bottom: var(--space-6);
  letter-spacing: 0.01em;
}
.accent-text { color: var(--color-accent); }
.hero-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; gap: 0; }
.stat-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-accent);
  line-height: 1;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.stat-divider { width: 1px; height: 40px; background: var(--color-border); }

/* Terminal widget */
.hero-terminal {
  background: #080b09;
  border: 1px solid #1e2a24;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,212,170,0.1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
[data-theme="light"] .hero-terminal {
  background: #0f1a14;
  border-color: #1a2e20;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2), 0 0 0 1px rgba(0,184,156,0.2);
}
.terminal-bar {
  background: #1a2420;
  padding: var(--space-2) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.terminal-title {
  margin-left: var(--space-4);
  color: #5a7068;
  font-size: var(--text-xs);
}
.terminal-body {
  padding: var(--space-5) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.t-line { display: flex; gap: var(--space-3); line-height: 1.5; }
.t-prompt { color: #00d4aa; }
.t-cmd { color: #c8d8c8; }
.t-comment { color: #3a5a48; font-style: italic; }
.t-key { color: #a8d8b8; min-width: 60px; }
.t-val { color: #6ab88a; }
.t-blink { color: #00d4aa; animation: blink 1s step-end infinite; }

/* ── YEAR NAV ───────────────────────────────────────────────── */
.year-nav {
  position: sticky;
  top: 61px;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.year-nav-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  overflow-x: auto;
  scrollbar-width: none;
}
.year-nav-inner::-webkit-scrollbar { display: none; }
.year-nav-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  white-space: nowrap;
  flex-shrink: 0;
}
.year-pills { display: flex; gap: var(--space-2); }
.year-pill {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  color: var(--color-text-faint);
  white-space: nowrap;
  transition: all var(--transition);
}
.year-pill:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-glow);
}
.year-pill.has-event { color: var(--color-text-muted); }

/* ── TIMELINE SECTION ───────────────────────────────────────── */
.timeline-section {
  padding: var(--space-16) var(--space-6);
}
.timeline-spine-wrapper {
  max-width: var(--content-default);
  margin: 0 auto;
  position: relative;
}
.timeline-spine {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--color-spine) 5%, var(--color-spine) 95%, transparent);
  transform: translateX(-50%);
}
.timeline-events {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Year anchor */
.year-anchor {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-8) 0 var(--space-4);
}
.year-anchor-label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text-faint);
  background: var(--color-bg);
  padding: var(--space-1) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  position: relative;
  z-index: 2;
  letter-spacing: 0.05em;
}
.year-anchor.active-year .year-anchor-label {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-glow);
}

/* Timeline event card */
.tl-event {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  align-items: start;
  gap: 0;
  padding: var(--space-3) 0;
  opacity: 1;
  transition: opacity var(--transition);
}
.tl-event.hidden { display: none; }
.tl-event:nth-child(even) .tl-card { grid-column: 3; }
.tl-event:nth-child(even) .tl-spacer { grid-column: 1; order: -1; }

.tl-spacer { /* empty */ }
.tl-node-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: var(--space-5);
}
.tl-node {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 3px solid var(--color-bg);
  position: relative;
  z-index: 2;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}
.tl-node:hover {
  transform: scale(1.4);
}

.tl-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.tl-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-color, var(--color-accent));
  opacity: 0.7;
}
.tl-card:hover {
  border-color: var(--card-color, var(--color-accent));
  box-shadow: 0 4px 20px rgba(0,0,0,0.15), 0 0 0 1px var(--card-color, var(--color-accent));
  transform: translateY(-2px);
}
.tl-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}
.tl-card-emoji { font-size: 1.5rem; }
.tl-card-name {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--card-color, var(--color-accent));
}
.tl-card-fullname {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  display: block;
}
.tl-card-badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: var(--radius-full, 9999px);
  border: 1px solid;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.badge-active { color: #4ade80; border-color: #4ade80; background: rgba(74,222,128,0.1); }
.badge-closed { color: var(--color-text-faint); border-color: var(--color-border); }

.tl-card-event {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-3);
}
.tl-card-meta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.tl-card-stat {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.tl-card-stat-val {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
  font-weight: 600;
}
.tl-card-stat-label {
  font-size: 0.65rem;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.tl-card-peek {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
  font-style: italic;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-3);
  line-height: 1.5;
}

/* ── MILESTONES ─────────────────────────────────────────────── */
.milestones-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-6);
}
.milestones-inner, .cards-inner {
  max-width: var(--content-default);
  margin: 0 auto;
}
.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: 0.02em;
}
.section-sub {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-8);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.milestones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}
.milestone-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: all var(--transition);
}
.milestone-card:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-offset);
}
.milestone-year {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-accent);
  line-height: 1;
}
.milestone-event {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.milestone-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.milestone-platforms {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-1);
}
.milestone-platform-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: var(--radius-full, 9999px);
  border: 1px solid var(--color-border);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── PLATFORM GRID ──────────────────────────────────────────── */
.cards-section {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-6);
}
.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-5);
}
.platform-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
  overflow: hidden;
}
.platform-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: radial-gradient(ellipse at bottom, var(--card-color-alpha, rgba(0,212,170,0.04)), transparent);
  pointer-events: none;
}
.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--card-color, var(--color-accent));
}
.platform-card-top {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.platform-emoji { font-size: 2rem; }
.platform-name-block { flex: 1; }
.platform-name {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-1);
}
.platform-fullname {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.platform-years {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  margin-top: var(--space-1);
  display: inline-block;
}
.platform-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
}
.platform-peak {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}
.platform-peak-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  display: block;
  margin-bottom: var(--space-1);
}
.platform-peak-val {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
}
.platform-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.platform-slang {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.slang-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-text-faint);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
}
.read-more-btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--card-color, var(--color-accent));
  border: 1px solid var(--card-color, var(--color-accent));
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition);
  flex-shrink: 0;
}
.read-more-btn:hover { background: var(--color-accent-glow); }

/* ── MODAL ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  max-width: 720px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(0,0,0,0.5);
  transform: scale(0.96) translateY(20px);
  transition: transform 200ms cubic-bezier(0.16,1,0.3,1);
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}
.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}
.modal-close {
  position: sticky;
  top: var(--space-4);
  float: right;
  margin: var(--space-4) var(--space-4) 0 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 1.25rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  z-index: 10;
  background: var(--color-surface);
}
.modal-close:hover { color: var(--color-text); border-color: var(--color-text); }
.modal-content { padding: var(--space-6) var(--space-8) var(--space-8); clear: both; }

.modal-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.modal-emoji { font-size: 3rem; }
.modal-title-block { flex: 1; }
.modal-platform-name {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  line-height: 1;
  margin-bottom: var(--space-1);
}
.modal-platform-fullname {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}
.modal-meta-row {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}
.modal-meta-item { display: flex; flex-direction: column; gap: 2px; }
.modal-meta-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
}
.modal-meta-val {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text);
}

.modal-section { margin-bottom: var(--space-6); }
.modal-section-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.modal-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-divider);
}
.modal-body-text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.modal-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.modal-features li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-offset);
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--modal-color, var(--color-accent));
  max-width: none;
}
.modal-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.modal-tl-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
}
.modal-tl-item:last-child { border-bottom: none; }
.modal-tl-year {
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--modal-color, var(--color-accent));
  min-width: 48px;
  flex-shrink: 0;
  line-height: 1.4;
}
.modal-tl-event {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.modal-interface-box {
  background: #080b09;
  border: 1px solid #1e2a24;
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #6ab88a;
  line-height: 1.7;
}
[data-theme="light"] .modal-interface-box {
  background: #0f1a14;
  border-color: #1a2e20;
}
.modal-commands {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-3);
}
.modal-commands li {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: #00d4aa;
  max-width: none;
}
.modal-commands li::before { content: '> '; color: #3a5a48; }
.modal-slang-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.modal-slang-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full, 9999px);
  border: 1px solid;
  color: var(--modal-color, var(--color-accent));
  border-color: var(--modal-color, var(--color-accent));
  background: var(--modal-color-alpha, var(--color-accent-glow));
}
.modal-screenshot-box {
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
  font-style: italic;
  position: relative;
}
.modal-screenshot-box::before {
  content: '"';
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--modal-color, var(--color-accent));
  opacity: 0.3;
  position: absolute;
  top: var(--space-2);
  left: var(--space-3);
  line-height: 1;
}

/* ── FOOTER ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) var(--space-6);
}
.footer-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 60ch;
  line-height: 1.7;
}

/* ── ANIMATIONS ON ENTRY ────────────────────────────────────── */
.tl-card { animation: fadeIn 0.4s ease both; }
.platform-card { animation: fadeIn 0.4s ease both; }
.milestone-card { animation: fadeIn 0.4s ease both; }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-terminal { display: none; }
  .timeline-spine { left: 24px; transform: none; }
  .tl-event {
    grid-template-columns: 48px 1fr;
    grid-template-rows: auto;
  }
  .tl-event .tl-spacer { display: none; }
  .tl-event .tl-node-col { grid-column: 1; grid-row: 1; }
  .tl-event .tl-card { grid-column: 2; grid-row: 1; }
  .tl-event:nth-child(even) .tl-card { grid-column: 2; }
  .tl-event:nth-child(even) .tl-spacer { display: none; }
  .year-anchor { justify-content: flex-start; padding-left: 8px; }
  .platform-grid { grid-template-columns: 1fr; }
  .milestones-grid { grid-template-columns: 1fr; }
  .modal-content { padding: var(--space-4) var(--space-5) var(--space-6); }
  .modal-header { flex-direction: column; }
}

@media (max-width: 520px) {
  .header-inner { gap: var(--space-2); }
  .logo-sub { display: none; }
  .filter-btn[data-filter="network"] { display: none; }
  .hero-heading { font-size: var(--text-2xl); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-node-ring); }