/* ============================================================
   Documentary — shared styles
   Dark, glowy, lab-aesthetic.
   ============================================================ */

:root {
  --bg:        #07090f;
  --bg-soft:   #0d1119;
  --bg-card:   #11151f;
  --border:    #1f2533;
  --fg:        #d9e0ee;
  --fg-dim:    #7c8398;
  --fg-mute:   #4b5266;
  --accent:    #00e5b8;
  --accent-2:  #6c8cff;
  --accent-3:  #ff5ec4;
  --warn:      #ffb554;
  --err:       #ff5f6d;
  --mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, ui-monospace, monospace;
  --sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; transition: opacity .2s; }
a:hover { opacity: .8; }

/* === Background particles / gradient === */
.bg-grad {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(108,140,255,0.10), transparent 50%),
    radial-gradient(ellipse 70% 50% at 80% 100%, rgba(0,229,184,0.08), transparent 50%),
    radial-gradient(ellipse 60% 40% at 50% 50%, rgba(255,94,196,0.05), transparent 60%),
    var(--bg);
}
canvas#particles {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

/* === Navigation === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(7,9,15,0.7);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav .logo {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--fg);
}
.nav .logo b {
  color: var(--accent);
  font-weight: 600;
}
.nav .links {
  display: flex;
  gap: 8px;
}
.nav .links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--fg-dim);
  border: 1px solid transparent;
}
.nav .links a:hover, .nav .links a.active {
  color: var(--accent);
  border-color: rgba(0,229,184,0.3);
  background: rgba(0,229,184,0.05);
}

/* === Hero === */
.hero {
  padding: 100px 32px 60px;
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
}
.hero .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  padding: 6px 14px;
  border: 1px solid rgba(0,229,184,0.3);
  border-radius: 20px;
  background: rgba(0,229,184,0.05);
}
.hero h1 {
  margin: 24px 0 12px;
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  background: linear-gradient(135deg, #fff 0%, var(--accent-2) 50%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  font-size: 18px;
  color: var(--fg-dim);
  max-width: 720px;
  margin: 0 auto;
}

/* === Cards === */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 0 32px 80px;
  max-width: 1280px;
  margin: 0 auto;
}
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
}
.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  transition: all .25s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(0,229,184,0.05));
  opacity: 0;
  transition: opacity .25s;
  pointer-events: none;
}
.card:hover {
  border-color: rgba(0,229,184,0.3);
  transform: translateY(-4px);
}
.card:hover::before { opacity: 1; }
.card .num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.card h3 {
  margin: 8px 0 12px;
  font-size: 20px;
  font-weight: 600;
}
.card p {
  color: var(--fg-dim);
  font-size: 14px;
  margin: 0 0 18px;
}
.card .meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-mute);
  letter-spacing: 0.05em;
}
.card .arrow {
  position: absolute;
  bottom: 24px;
  right: 28px;
  color: var(--accent);
  transition: transform .25s;
}
.card:hover .arrow { transform: translateX(4px); }

/* === Pages: layout === */
.page {
  max-width: 1480px;
  margin: 0 auto;
  padding: 32px;
}
.page h2 {
  font-size: 28px;
  margin: 0 0 8px;
  font-weight: 700;
}
.page .sub {
  color: var(--fg-dim);
  margin: 0 0 28px;
  font-size: 14px;
}
.page .breadcrumb {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--fg-mute);
  margin-bottom: 18px;
}
.page .breadcrumb a { color: var(--fg-dim); }

/* === Split panels === */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  min-height: 600px;
}
@media (max-width: 1000px) {
  .split { grid-template-columns: 1fr; }
}

/* === Terminal === */
.terminal {
  background: #06080d;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 600px;
}
.term-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: linear-gradient(180deg, #11141d, #0c0f17);
  border-bottom: 1px solid var(--border);
}
.term-dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: #444;
}
.term-dot.r { background: #ff5f56; }
.term-dot.y { background: #ffbd2e; }
.term-dot.g { background: #27c93f; }
.term-title {
  flex: 1;
  text-align: center;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-mute);
  letter-spacing: 0.05em;
}
.term-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.55;
  color: #c0c8d8;
  scroll-behavior: smooth;
}
.term-body::-webkit-scrollbar { width: 6px; }
.term-body::-webkit-scrollbar-track { background: transparent; }
.term-body::-webkit-scrollbar-thumb { background: #1a1f2c; border-radius: 3px; }

.term-line { white-space: pre-wrap; word-break: break-all; }
.term-prompt { color: var(--accent); }
.term-user { color: var(--accent-2); }
.term-cmd { color: #f0f3fa; }
.term-info { color: var(--fg-dim); }
.term-warn { color: var(--warn); }
.term-err { color: var(--err); }
.term-success { color: var(--accent); }
.term-key { color: var(--accent-3); }
.term-val { color: #e9c87a; }
.term-emit { color: #9ee8d0; }
.term-tag {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  letter-spacing: 0.06em;
  margin-right: 6px;
}
.tag-info { background: rgba(108,140,255,0.18); color: var(--accent-2); }
.tag-ok { background: rgba(0,229,184,0.18); color: var(--accent); }
.tag-gen { background: rgba(255,94,196,0.18); color: var(--accent-3); }

.cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1s infinite;
}
@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* === Viz panels === */
.viz {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 600px;
}
.viz-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.viz-head h4 {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--mono);
  letter-spacing: 0.05em;
  color: var(--fg);
}
.viz-head .tags {
  display: flex;
  gap: 6px;
}
.viz-head .pill {
  font-family: var(--mono);
  font-size: 10px;
  padding: 3px 9px;
  border-radius: 10px;
  background: rgba(0,229,184,0.1);
  border: 1px solid rgba(0,229,184,0.3);
  color: var(--accent);
  letter-spacing: 0.04em;
}
.viz-body {
  flex: 1;
  position: relative;
  background:
    radial-gradient(ellipse at center, rgba(108,140,255,0.06), transparent 70%),
    #050709;
}
.viz-stage {
  position: absolute;
  inset: 0;
}
.viz-foot {
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-dim);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.viz-foot .k { color: var(--fg-mute); }
.viz-foot .v { color: var(--accent); }

/* SMILES strip */
.smiles-strip {
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  background: #06080d;
  font-family: var(--mono);
  font-size: 13px;
  word-break: break-all;
  color: var(--fg);
  min-height: 40px;
  letter-spacing: 0.02em;
}
.smiles-strip .tok {
  display: inline-block;
  animation: tok-in .18s ease;
}
.smiles-strip .tok.symbol { color: var(--accent); }
.smiles-strip .tok.bracket { color: var(--accent-2); }
.smiles-strip .tok.digit { color: var(--warn); }
.smiles-strip .tok.special { color: var(--accent-3); }
@keyframes tok-in {
  0% { opacity: 0; transform: translateY(-3px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* === Controls === */
.controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #08090e;
  border-top: 1px solid var(--border);
}
.btn {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 7px 14px;
  background: rgba(0,229,184,0.1);
  color: var(--accent);
  border: 1px solid rgba(0,229,184,0.4);
  border-radius: 6px;
  cursor: pointer;
  transition: all .15s;
}
.btn:hover {
  background: rgba(0,229,184,0.2);
  box-shadow: 0 0 18px rgba(0,229,184,0.25);
}
.btn:active { transform: scale(0.97); }
.btn.alt { color: var(--accent-2); background: rgba(108,140,255,0.1); border-color: rgba(108,140,255,0.4); }
.btn.alt:hover { background: rgba(108,140,255,0.2); box-shadow: 0 0 18px rgba(108,140,255,0.25); }

input[type=range] {
  -webkit-appearance: none;
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 0 12px rgba(0,229,184,0.6);
}
input[type=range]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 0;
}

/* Stats overlay */
.stats {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 5;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-dim);
  background: rgba(7,9,15,0.6);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  backdrop-filter: blur(8px);
  pointer-events: none;
}
.stats div { margin: 1px 0; }
.stats .k { color: var(--fg-mute); display: inline-block; min-width: 64px; }
.stats .v { color: var(--accent); }

/* Footer */
.foot {
  padding: 32px;
  text-align: center;
  color: var(--fg-mute);
  font-family: var(--mono);
  font-size: 11px;
  border-top: 1px solid var(--border);
  margin-top: 60px;
}
.foot a { color: var(--fg-dim); }

/* Loading dots */
.loader {
  display: inline-block;
}
.loader::after {
  content: '...';
  animation: loader 1.5s infinite;
}
@keyframes loader {
  0% { content: '.'; }
  33% { content: '..'; }
  66% { content: '...'; }
}