/* ============================================================
   skill_pool — terminal aesthetic
   Pure black + phosphor green, scanlines, JetBrains Mono.
   ============================================================ */

:root {
  --bg: #000000;
  --bg-elev: #050805;
  --bg-glass: rgba(0, 18, 8, 0.55);
  --fg: #d5ffd5;
  --fg-dim: #6fa86f;
  --fg-muted: #3d6a3d;
  --accent: #00ff88;
  --accent-dim: #00b860;
  --accent-warn: #ffd200;
  --accent-err: #ff5577;
  --border: #144a14;
  --border-bright: #2a8a2a;
  --shadow-glow: 0 0 14px rgba(0, 255, 136, 0.35);
  --shadow-glow-soft: 0 0 4px rgba(0, 255, 136, 0.15);
  --max-w: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: "JetBrains Mono", "Fira Code", "SF Mono", Menlo, Consolas, monospace;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Subtle CRT scanlines */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  background:
    repeating-linear-gradient(
      0deg,
      rgba(0, 255, 136, 0.025) 0,
      rgba(0, 255, 136, 0.025) 1px,
      transparent 1px,
      transparent 3px
    );
  mix-blend-mode: screen;
}

/* Vignette glow */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 99;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    transparent 55%,
    rgba(0, 0, 0, 0.85) 100%
  );
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dotted var(--accent-dim);
  transition: all 120ms ease;
}

a:hover {
  color: #fff;
  border-bottom-color: #fff;
  text-shadow: var(--shadow-glow);
}

::selection { background: var(--accent); color: #000; }

/* ----- Layout ----- */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ----- Top nav ----- */

.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.topnav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  font-weight: 700;
  font-size: 16px;
  color: var(--accent);
  border: none;
  letter-spacing: -0.02em;
  text-shadow: var(--shadow-glow-soft);
}

.brand::before {
  content: "> ";
  color: var(--fg-dim);
}

.brand .cursor {
  display: inline-block;
  width: 8px;
  background: var(--accent);
  height: 1em;
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1.1s steps(2) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.nav-links {
  display: flex;
  gap: 18px;
  list-style: none;
  margin-left: auto;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--fg-dim);
  border: none;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
  text-shadow: var(--shadow-glow-soft);
}

.search-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-dim);
  padding: 5px 12px;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 120ms ease;
}

.search-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-glow-soft);
}

.search-btn kbd {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 1px 6px;
  font-size: 11px;
  font-family: inherit;
  color: var(--fg-dim);
}

/* ----- Hero ----- */

.hero {
  padding: 80px 0 60px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.08), transparent 70%);
  pointer-events: none;
  filter: blur(40px);
  z-index: -1;
}

.terminal-prompt {
  color: var(--fg-dim);
  font-size: 14px;
  margin-bottom: 12px;
}

.terminal-prompt::before {
  content: "$ ";
  color: var(--accent);
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 18px;
  max-width: 18ch;
}

.hero h1 .accent {
  color: var(--accent);
  text-shadow: var(--shadow-glow);
}

.hero p.lede {
  font-size: 18px;
  color: var(--fg-dim);
  max-width: 60ch;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  font-size: 12px;
  color: var(--fg-muted);
}

.hero-meta span {
  border: 1px solid var(--border);
  padding: 3px 8px;
  letter-spacing: 0.05em;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: all 150ms ease;
}

.btn:hover {
  background: var(--accent);
  color: #000;
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn.btn-ghost {
  border-color: var(--border-bright);
  color: var(--fg-dim);
}

.btn.btn-ghost:hover {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

/* ----- Sections ----- */

section {
  padding: 64px 0;
  position: relative;
}

section.alt {
  background: linear-gradient(180deg, transparent, rgba(0, 255, 136, 0.025), transparent);
}

.section-label {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-label::before {
  content: "// ";
  color: var(--fg-muted);
}

h2 {
  font-size: clamp(24px, 3.5vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--fg);
}

h2 .accent { color: var(--accent); }

h3 {
  font-size: 18px;
  margin: 28px 0 10px;
  color: var(--fg);
  font-weight: 600;
}

h3.with-prompt::before {
  content: "▸ ";
  color: var(--accent);
}

p { margin-bottom: 14px; color: var(--fg-dim); }
p strong { color: var(--fg); }

ul, ol { margin: 14px 0 14px 22px; color: var(--fg-dim); }
li { margin-bottom: 8px; }
li::marker { color: var(--accent); }

/* ----- Cards ----- */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
  margin-top: 32px;
}

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 24px;
  position: relative;
  transition: all 180ms ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color 180ms ease;
}

.card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.card:hover::before { border-color: rgba(0, 255, 136, 0.2); }

.card h3 {
  margin-top: 0;
  color: var(--accent);
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card h3::before {
  content: "[ ";
  color: var(--fg-muted);
}

.card h3::after {
  content: " ]";
  color: var(--fg-muted);
}

.card p {
  font-size: 13px;
  color: var(--fg-dim);
  margin: 0;
}

/* ----- Code blocks ----- */

pre, code {
  font-family: inherit;
}

pre {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  overflow-x: auto;
  margin: 18px 0;
  font-size: 13px;
  line-height: 1.6;
  position: relative;
}

pre code { color: var(--fg); }

pre .comment { color: var(--fg-muted); font-style: italic; }
pre .cmd     { color: var(--accent); }
pre .arg     { color: var(--accent-warn); }
pre .ok      { color: var(--accent); }
pre .err     { color: var(--accent-err); }

p code, li code {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 1px 6px;
  font-size: 0.9em;
  color: var(--accent);
}

/* ----- Tables ----- */

table {
  width: 100%;
  margin: 20px 0;
  border-collapse: collapse;
  border: 1px solid var(--border);
  font-size: 13px;
}

th, td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: var(--bg-elev);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 11px;
}

td { color: var(--fg-dim); }
tr:last-child td { border-bottom: none; }

/* ----- Demo video ----- */

.demo-frame {
  background: var(--bg-elev);
  border: 1px solid var(--border-bright);
  padding: 0;
  margin: 40px 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
}

.demo-frame .titlebar {
  background: #0a1a0a;
  border-bottom: 1px solid var(--border);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--fg-muted);
}

.demo-frame .dots {
  display: flex;
  gap: 6px;
  margin-right: 10px;
}

.demo-frame .dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.demo-frame .dots span:nth-child(1) { background: #ff5577; }
.demo-frame .dots span:nth-child(2) { background: var(--accent-warn); }
.demo-frame .dots span:nth-child(3) { background: var(--accent); }

.demo-frame video,
.demo-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* ----- Two-up media tabs ----- */

.media-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 0;
  border-bottom: 1px solid var(--border);
  padding: 0 12px;
  background: #0a1a0a;
}

.media-tab {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--fg-muted);
  padding: 8px 14px;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: all 120ms ease;
}

.media-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.media-tab:hover { color: var(--fg); }

.media-pane { display: none; }
.media-pane.active { display: block; }

/* ----- Mermaid styling ----- */

.mermaid {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: 24px;
  margin: 24px 0;
  overflow-x: auto;
  text-align: center;
}

.mermaid svg { max-width: 100%; height: auto; }

/* ----- Search modal ----- */

.search-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: none;
  padding-top: 12vh;
}

.search-modal.open { display: block; }

.search-box {
  max-width: 640px;
  margin: 0 auto;
  background: var(--bg-elev);
  border: 1px solid var(--border-bright);
  box-shadow: var(--shadow-glow);
}

.search-input-row {
  display: flex;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}

.search-input-row::before {
  content: "$";
  color: var(--accent);
  font-weight: 700;
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--fg);
  font-family: inherit;
  font-size: 16px;
  caret-color: var(--accent);
}

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

.search-results {
  max-height: 60vh;
  overflow-y: auto;
}

.search-result {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  border-left: 2px solid transparent;
}

.search-result:hover,
.search-result.selected {
  background: rgba(0, 255, 136, 0.05);
  border-left-color: var(--accent);
}

.search-result-title {
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 3px;
}

.search-result-context {
  color: var(--fg-muted);
  font-size: 12px;
}

.search-result-section {
  color: var(--fg-dim);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.search-empty {
  padding: 24px 18px;
  color: var(--fg-muted);
  text-align: center;
  font-size: 13px;
}

/* ----- Toc / sidebar ----- */

.doc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 48px;
  padding: 48px 0;
}

.toc {
  position: sticky;
  top: 80px;
  align-self: start;
  font-size: 13px;
}

.toc-label {
  color: var(--fg-muted);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li { margin-bottom: 6px; }
.toc a {
  color: var(--fg-dim);
  border: none;
  padding-left: 12px;
  border-left: 1px solid var(--border);
  display: block;
  transition: all 100ms ease;
}

.toc a:hover, .toc a.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

/* ----- Footer ----- */

footer {
  border-top: 1px solid var(--border);
  margin-top: 80px;
  padding: 40px 0 60px;
  color: var(--fg-muted);
  font-size: 12px;
}

footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

footer a {
  color: var(--fg-dim);
  border: none;
  margin-right: 18px;
}

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

/* ----- Callout ----- */

.callout {
  border-left: 3px solid var(--accent);
  background: rgba(0, 255, 136, 0.04);
  padding: 14px 18px;
  margin: 20px 0;
  font-size: 14px;
}

.callout strong { color: var(--accent); }

.callout.warn { border-left-color: var(--accent-warn); background: rgba(255, 210, 0, 0.04); }
.callout.warn strong { color: var(--accent-warn); }

/* ----- Responsive ----- */

@media (max-width: 768px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }
  .toc { display: none; }
  .nav-links { gap: 10px; }
  .nav-links a { font-size: 11px; }
  .hero { padding: 48px 0 32px; }
}

/* ----- Boot animation for hero ----- */

.boot-line {
  opacity: 0;
  animation: typeIn 400ms ease forwards;
}

.boot-line:nth-child(1) { animation-delay: 100ms; }
.boot-line:nth-child(2) { animation-delay: 250ms; }
.boot-line:nth-child(3) { animation-delay: 400ms; }
.boot-line:nth-child(4) { animation-delay: 600ms; }

@keyframes typeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}