/* ============================================================
   BeardGit — landing page
   Aesthetic: craft-brutalist · editorial · terminal-craft
   ============================================================ */

/* ---------- Theme tokens ---------- */
:root {
  /* Brand constants (unchanged across themes) */
  --brand-orange: #FF6A16;
  --brand-orange-deep: #BC4C00;
  --brand-beard: #7A3E18;
  --brand-beard-dark: #4B1D0D;
  --brand-green: #3FB950;
  --brand-blue: #2F81F7;

  /* Semantic tokens — default to DARK (GitHub dark + BeardGit orange) */
  --bg: #0D1117;
  --bg-elev: #161B22;
  --bg-panel: #21262D;
  --fg: #E6EDF3;
  --fg-dim: #C9D1D9;
  --fg-muted: #8B949E;
  --rule: #21262D;
  --rule-strong: #30363D;
  --accent: #FF6A16;
  --accent-ink: #0D1117;
  --grid-dot: rgba(201, 209, 217, 0.05);

  /* Code / syntax (reuse for mock screenshots) */
  --code-bg: #010409;
  --code-kw: #FF7B72;
  --code-str: #A5D6FF;
  --code-fn: #E6EDF3;
  --code-cm: #8B949E;
  --code-num: #79C0FF;

  /* App mock chrome */
  --mock-chrome: #161B22;
  --mock-surface: #0D1117;
  --mock-panel: #0D1117;
  --mock-line: #30363D;
  --mock-text: #E6EDF3;
  --mock-text-dim: #8B949E;
  --mock-active: rgba(255, 106, 22, 0.14);

  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #FFFFFF;
  --bg-elev: #F6F8FA;
  --bg-panel: #EAEEF2;
  --fg: #1F2328;
  --fg-dim: #424A53;
  --fg-muted: #59636E;
  --rule: #D1D9E0;
  --rule-strong: #AFB8C1;
  --accent: #BC4C00;
  --accent-ink: #FFFFFF;
  --grid-dot: rgba(31, 35, 40, 0.06);

  --code-bg: #F6F8FA;
  --code-kw: #CF222E;
  --code-str: #0A3069;
  --code-fn: #1F2328;
  --code-cm: #6E7781;
  --code-num: #0550AE;

  --mock-chrome: #F6F8FA;
  --mock-surface: #FFFFFF;
  --mock-panel: #F6F8FA;
  --mock-line: #D1D9E0;
  --mock-text: #1F2328;
  --mock-text-dim: #59636E;
  --mock-active: rgba(188, 76, 0, 0.10);

  color-scheme: light;
}

/* System-auto when no manual choice (data-theme=auto or unset) */
@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] {
    --bg: #FFFFFF;
    --bg-elev: #F6F8FA;
    --bg-panel: #EAEEF2;
    --fg: #1F2328;
    --fg-dim: #424A53;
    --fg-muted: #59636E;
    --rule: #D1D9E0;
    --rule-strong: #AFB8C1;
    --accent: #BC4C00;
    --accent-ink: #FFFFFF;
    --grid-dot: rgba(31, 35, 40, 0.06);

    --code-bg: #F6F8FA;
    --code-kw: #CF222E;
    --code-str: #0A3069;
    --code-fn: #1F2328;
    --code-cm: #6E7781;
    --code-num: #0550AE;

    --mock-chrome: #F6F8FA;
    --mock-surface: #FFFFFF;
    --mock-panel: #F6F8FA;
    --mock-line: #D1D9E0;
    --mock-text: #1F2328;
    --mock-text-dim: #59636E;
    --mock-active: rgba(188, 76, 0, 0.10);

    color-scheme: light;
  }
}

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

html {
  font-family: "Fira Code", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 16px;
  line-height: 1.55;
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 80% 50% at 80% 0%, rgba(255, 106, 22, 0.06), transparent 70%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(47, 129, 247, 0.05), transparent 70%),
    var(--bg);
}

@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] body {
    background:
      radial-gradient(ellipse 80% 50% at 80% 0%, rgba(188, 76, 0, 0.05), transparent 70%),
      radial-gradient(ellipse 60% 40% at 0% 100%, rgba(9, 105, 218, 0.04), transparent 70%),
      var(--bg);
  }
}
[data-theme="light"] body {
  background:
    radial-gradient(ellipse 80% 50% at 80% 0%, rgba(188, 76, 0, 0.05), transparent 70%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(9, 105, 218, 0.04), transparent 70%),
    var(--bg);
}

/* Film-grain overlay (very subtle — GitHub-style surfaces prefer clarity) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.18;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.35 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

/* Dot grid */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, black 0%, black 70%, transparent 100%);
}

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

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: "Fraunces", "Iowan Old Style", Georgia, serif;
  font-weight: 500;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  letter-spacing: -0.01em;
  margin: 0;
}
.italic { font-style: italic; font-variation-settings: "opsz" 144, "SOFT" 100; }
.mono { font-family: "Fira Code", ui-monospace, monospace; font-feature-settings: "liga" 1, "calt" 1; }
.eyebrow {
  font-family: "Fira Code", monospace;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--fg-muted);
}

a { color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--rule-strong); transition: color .2s, border-color .2s; }
a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- Layout primitives ---------- */
.wrap { max-width: 1360px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 3rem); position: relative; z-index: 2; }

section { padding: clamp(3.25rem, 6vw, 5.5rem) 0; position: relative; }
section + section { border-top: 1px solid var(--rule); }

/* ---------- Top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
  /* padding-block (not the shorthand) so we don't clobber the
     horizontal padding inherited from .wrap; otherwise the brand and
     theme toggle sit flush against the viewport edges on wide screens. */
  padding-block: 0.9rem;
}
.brand { display: flex; align-items: center; gap: 0.6rem; }
/* Light plate only where it's needed (dark bg). Light themes show the logo raw. */
.brand-mark {
  width: 30px;
  height: 30px;
  padding: 0;
  background: transparent;
  border-radius: 8px;
  transition: transform .2s cubic-bezier(.2,.7,.3,1), box-shadow .2s, background .2s;
}
.brand:hover .brand-mark { transform: rotate(-4deg); }

/* Default root = dark tokens → plate on */
:root:not([data-theme="light"]) .brand-mark {
  width: 34px;
  height: 34px;
  padding: 4px;
  background: #F6F8FA;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04),
              0 4px 12px -8px color-mix(in oklab, var(--accent) 55%, transparent);
}
/* But if system is light AND user left it on auto, reset back to raw */
@media (prefers-color-scheme: light) {
  :root[data-theme="auto"] .brand-mark {
    width: 30px;
    height: 30px;
    padding: 0;
    background: transparent;
    box-shadow: none;
  }
}

.brand-name { font-family: "Fraunces", serif; font-weight: 500; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand-version { color: var(--fg-muted); font-size: 0.72rem; letter-spacing: 0.12em; }
.nav-links { display: flex; gap: 1.6rem; }
.nav-links a { border: none; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--fg-dim); }
.nav-links a:hover { color: var(--accent); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.7rem;
  border: 1px solid var(--rule-strong);
  background: var(--bg-elev);
  color: var(--fg);
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: border-color .18s, color .18s, background .18s;
  border-radius: 6px;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); background: var(--bg-panel); }
.theme-toggle svg { width: 15px; height: 15px; stroke-width: 2; }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(3rem, 6vw, 5rem); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.hero-meta { display: flex; gap: 0.8rem; align-items: center; margin-bottom: 2rem; flex-wrap: wrap; }
.badge {
  display: inline-flex; gap: 0.45rem; align-items: center;
  padding: 0.28rem 0.6rem;
  border: 1px solid var(--rule-strong);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--fg-dim);
  text-transform: uppercase;
}
.badge-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 10px var(--accent); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.45; } }

.hero-title {
  font-size: clamp(3rem, 8.2vw, 7.2rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
}
.hero-title .lead { display: block; }
.hero-title .accent { color: var(--accent); }
.hero-title .italic { color: var(--fg); }
.hero-title .caret { display: inline-block; width: 0.55ch; height: 0.85em; vertical-align: -0.08em; background: var(--accent); margin-left: 0.08em; animation: blink 1.15s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-sub {
  max-width: 38ch;
  font-size: clamp(0.98rem, 1.1vw, 1.08rem);
  color: var(--fg-dim);
  line-height: 1.6;
  margin-bottom: 2.2rem;
}

.cta-row { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 2.6rem; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 1.3rem;
  border: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 6px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
  transition:
    transform .18s cubic-bezier(.2,.7,.3,1),
    background .18s,
    color .18s,
    border-color .18s,
    box-shadow .18s,
    filter .18s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: #FF8A3D; /* slightly lighter, still vivid — keeps white text readable */
  border-color: #FF8A3D;
  color: #FFFFFF;
  box-shadow: 0 10px 24px -10px color-mix(in oklab, var(--accent) 75%, transparent);
}
.btn-primary:active {
  background: var(--brand-orange-deep);
  border-color: var(--brand-orange-deep);
}
.btn-primary svg { color: #FFFFFF; }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--rule-strong); }
.btn-ghost:hover {
  background: var(--bg-elev);
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 14px -8px color-mix(in oklab, var(--accent) 60%, transparent);
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn svg { width: 16px; height: 16px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
}
.stat-num { font-family: "Fraunces", serif; font-size: clamp(1.6rem, 2.4vw, 2.2rem); line-height: 1; color: var(--fg); }
.stat-num .italic { color: var(--accent); }
.stat-lbl { color: var(--fg-muted); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; margin-top: 0.4rem; }

/* ---------- Hero commit-graph visual ---------- */
.hero-graph {
  position: relative;
  aspect-ratio: 1 / 1.02;
  border: 1px solid var(--rule-strong);
  border-radius: 12px;
  background:
    linear-gradient(var(--bg-elev), var(--bg-elev)),
    repeating-linear-gradient(0deg, transparent 0 31px, var(--grid-dot) 31px 32px);
  background-blend-mode: normal;
  overflow: hidden;
}
.hero-graph::before {
  content: "GRAPH.LOG";
  position: absolute; top: 10px; left: 12px;
  font-size: 0.68rem; color: var(--fg-muted); letter-spacing: 0.2em;
}
.hero-graph::after {
  content: "";
  position: absolute; bottom: 12px; right: 12px;
  width: 8px; height: 8px; background: var(--accent); border-radius: 50%;
  box-shadow: 0 0 14px var(--accent);
}
.hero-graph svg { width: 100%; height: 100%; display: block; }

.node { fill: var(--bg-elev); stroke: var(--fg); stroke-width: 2; }
.node.active { fill: var(--accent); stroke: var(--accent); }
.node.beard { stroke: var(--brand-beard); }
.node.blue { stroke: var(--brand-blue); }
.node.green { stroke: var(--brand-green); }

.edge { fill: none; stroke-width: 2; stroke-linecap: round; stroke-dasharray: 600; stroke-dashoffset: 600; animation: draw 2.2s cubic-bezier(.4,0,.2,1) forwards; }
.edge.main { stroke: var(--fg); }
.edge.beard { stroke: var(--brand-beard); animation-delay: 0.15s; }
.edge.blue { stroke: var(--brand-blue); animation-delay: 0.3s; }
.edge.green { stroke: var(--brand-green); animation-delay: 0.45s; }
.edge.accent { stroke: var(--accent); animation-delay: 0.6s; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.graph-label { font-family: "Fira Code", monospace; font-size: 11px; fill: var(--fg-dim); }
.graph-hash { font-family: "Fira Code", monospace; font-size: 10px; fill: var(--fg-muted); letter-spacing: 0.05em; }

/* ---------- Manifesto ---------- */
.manifesto { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(2rem, 5vw, 5rem); }
.manifesto-label { border-top: 2px solid var(--fg); padding-top: 0.8rem; }
.manifesto-body {
  font-family: "Fraunces", serif;
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--fg-dim);
  max-width: 32ch;
}
.manifesto-body strong { color: var(--fg); font-weight: 500; }
.manifesto-body .italic { color: var(--accent); }
.manifesto-body::first-letter {
  font-family: "Fraunces", serif;
  font-style: italic;
  font-size: 4.4em;
  line-height: 0.85;
  float: left;
  padding: 0.08em 0.28em 0 0;
  margin-right: 0.08em;
  shape-outside: margin-box;
  color: var(--accent);
}

/* ---------- Features ---------- */
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: 3rem; flex-wrap: wrap; }
.section-head h2 {
  font-size: clamp(2rem, 4.2vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.025em;
  max-width: 14ch;
}
.section-head .italic { color: var(--accent); }
.section-head-meta { color: var(--fg-muted); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
}
.feature {
  padding: clamp(1.5rem, 2.4vw, 2.2rem);
  background: var(--bg);
  min-height: 260px;
  min-width: 0;
  position: relative;
  transition: background .25s;
  display: flex;
  flex-direction: column;
}
/* legacy modifiers neutralised — grid is uniform now */
.feature.wide,
.feature.tall { grid-column: auto; grid-row: auto; min-height: 260px; }
.feature:hover { background: var(--bg-elev); }
.feature-num { font-family: "Fira Code", monospace; font-size: 0.72rem; color: var(--fg-muted); letter-spacing: 0.14em; }
.feature-title { font-family: "Fraunces", serif; font-size: clamp(1.35rem, 2vw, 1.7rem); line-height: 1.15; margin: 0.5rem 0 0.8rem; }
.feature-title .italic { color: var(--accent); }
.feature-body { color: var(--fg-dim); font-size: 0.92rem; line-height: 1.55; }
.feature-icon {
  position: absolute;
  top: clamp(1.5rem, 2.4vw, 2.2rem);
  right: clamp(1.5rem, 2.4vw, 2.2rem);
  color: var(--fg-muted);
  transition: color .25s, transform .4s cubic-bezier(.2,.7,.3,1);
}
.feature-icon svg { width: 32px; height: 32px; }
.feature:hover .feature-icon { color: var(--accent); transform: rotate(6deg) scale(1.1); }

.feature pre {
  margin: 1rem 0 0;
  font-family: "Fira Code", monospace;
  font-size: 0.72rem;
  background: var(--code-bg);
  color: var(--code-fn);
  padding: 0.85rem 1rem;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  line-height: 1.6;
  overflow-x: auto;
}
.feature pre .kw { color: var(--code-kw); }
.feature pre .cm { color: var(--code-cm); }
.feature pre .str { color: var(--code-str); }
.feature pre .num { color: var(--code-num); }

/* ---------- Showcase (mock app screenshot in CSS) ---------- */
.showcase { padding-bottom: clamp(3rem, 5vw, 4.5rem); }
.mock-window {
  border: 1px solid var(--rule-strong);
  background: var(--mock-surface);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,0.5), 0 0 0 1px var(--rule);
  overflow: hidden;
  position: relative;
  border-radius: 10px;
}
.mock-chrome {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 0.9rem;
  background: var(--mock-chrome);
  border-bottom: 1px solid var(--mock-line);
}
.mock-dots { display: flex; gap: 0.45rem; }
.mock-dots span { width: 11px; height: 11px; border-radius: 50%; background: var(--mock-line); }
.mock-dots span:nth-child(1) { background: #ED6A5E; }
.mock-dots span:nth-child(2) { background: #F5C451; }
.mock-dots span:nth-child(3) { background: #62C554; }
.mock-tabs { display: flex; gap: 0.3rem; margin-left: 0.8rem; flex: 1; overflow: hidden; }
.mock-tab { font-size: 0.72rem; padding: 0.3rem 0.7rem; color: var(--mock-text-dim); border: 1px solid transparent; white-space: nowrap; }
.mock-tab.active { color: var(--mock-text); background: var(--mock-surface); border-color: var(--mock-line); border-bottom-color: var(--mock-surface); }

.mock-body { display: grid; grid-template-columns: 220px 1fr 1fr; min-height: 520px; }
.mock-pane { border-right: 1px solid var(--mock-line); padding: 0.9rem 0; }
.mock-pane:last-child { border-right: none; }
.mock-pane-title { font-size: 0.66rem; color: var(--mock-text-dim); letter-spacing: 0.16em; padding: 0 1rem 0.6rem; text-transform: uppercase; }
.mock-item { display: flex; align-items: center; gap: 0.55rem; padding: 0.35rem 1rem; font-size: 0.78rem; color: var(--mock-text); }
.mock-item.active { background: var(--mock-active); color: var(--accent); border-left: 2px solid var(--accent); padding-left: calc(1rem - 2px); }
.mock-item .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; opacity: 0.7; flex-shrink: 0; }

.mock-graph { padding: 0.8rem 1rem; font-family: "Fira Code", monospace; font-size: 0.74rem; color: var(--mock-text); }
.mock-graph-row { display: grid; grid-template-columns: 70px 1fr auto; gap: 0.8rem; padding: 0.28rem 0; align-items: center; }
.mock-graph-row .glyph { color: var(--fg-muted); white-space: pre; }
.mock-graph-row.hl { background: var(--mock-active); }
.mock-graph-row.hl .glyph { color: var(--accent); }
.mock-graph-row .msg { color: var(--mock-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mock-graph-row .tag { font-size: 0.62rem; padding: 1px 6px; border: 1px solid var(--accent); color: var(--accent); letter-spacing: 0.08em; }

.mock-diff { padding: 0.8rem 0; font-family: "Fira Code", monospace; font-size: 0.72rem; line-height: 1.6; color: var(--mock-text); }
.mock-diff-row { padding: 0 1rem; display: grid; grid-template-columns: 34px 1fr; gap: 0.9rem; }
.mock-diff-row .ln { color: var(--mock-text-dim); text-align: right; }
.mock-diff-row.add { background: rgba(123, 170, 102, 0.10); }
.mock-diff-row.add .ln { color: var(--brand-green); }
.mock-diff-row.add .code::before { content: "+ "; color: var(--brand-green); }
.mock-diff-row.del { background: rgba(255, 106, 22, 0.08); }
.mock-diff-row.del .ln { color: var(--accent); }
.mock-diff-row.del .code::before { content: "- "; color: var(--accent); }
.mock-diff-row .code .kw { color: var(--code-kw); }
.mock-diff-row .code .str { color: var(--code-str); }
.mock-diff-row .code .cm { color: var(--code-cm); }

.showcase-caption { margin-top: 1.3rem; color: var(--fg-muted); font-size: 0.8rem; letter-spacing: 0.08em; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }

/* ---------- Screenshot placeholders ---------- */
.screenshot-slot {
  position: relative;
  border: 1px dashed var(--rule-strong);
  background:
    repeating-linear-gradient(135deg, transparent 0 11px, var(--grid-dot) 11px 12px),
    var(--bg-elev);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
}
.screenshot-slot picture,
.screenshot-slot img { width: 100%; height: 100%; display: block; object-fit: cover; }
.screenshot-slot.missing img { display: none; }
.screenshot-slot.loaded {
  border: none;
  background: transparent;
  aspect-ratio: auto;
}
.screenshot-slot.loaded picture,
.screenshot-slot.loaded img { object-fit: contain; height: auto; }

.screenshot-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.screenshot-slot.small { min-height: 180px; aspect-ratio: 4 / 3; }

.shot-figure { margin: 0; display: flex; flex-direction: column; gap: 0.7rem; }
.shot-figure .screenshot-slot { cursor: zoom-in; transition: transform .25s ease; }
.shot-figure .screenshot-slot:hover { transform: translateY(-2px); }
.shot-caption {
  color: var(--fg-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-align: right;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0;
  background: color-mix(in oklab, var(--bg) 85%, black);
  display: none;
  align-items: center; justify-content: center;
  z-index: 1000;
  padding: 3rem;
  backdrop-filter: blur(6px);
}
.lightbox.open { display: flex; }
.lightbox-img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  border-radius: 8px;
}
.lightbox-caption {
  position: absolute; bottom: 1.5rem; left: 0; right: 0;
  text-align: center;
  color: var(--fg-muted);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}
.lightbox-close {
  position: absolute; top: 1rem; right: 1.2rem;
  background: none; border: none;
  color: var(--fg);
  font-size: 2.2rem; line-height: 1;
  cursor: pointer;
  padding: 0.3rem 0.7rem;
  transition: color .15s;
}
.lightbox-close:hover { color: var(--accent); }

.mock-fallback {
  margin-top: 1.2rem;
  border-top: 1px solid var(--rule);
  padding-top: 1.2rem;
}
.mock-fallback > summary {
  cursor: pointer;
  color: var(--fg-muted);
  font-family: "Fira Code", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  list-style: none;
  padding: 0.4rem 0;
  transition: color .2s;
}
.mock-fallback > summary:hover { color: var(--accent); }
.mock-fallback > summary::-webkit-details-marker { display: none; }
.mock-fallback > summary::before { content: "▸ "; color: var(--accent); display: inline-block; transition: transform .2s; }
.mock-fallback[open] > summary::before { content: "▾ "; }
.mock-fallback > summary .italic { color: var(--fg-dim); }
.mock-fallback > .mock-window { margin-top: 1rem; }

/* ---------- Install ---------- */
.install-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-top: 2rem;
  border-radius: 12px;
  overflow: hidden;
}
.install-card {
  background: var(--bg);
  padding: clamp(1.8rem, 3vw, 2.4rem);
  position: relative;
  transition: background .25s;
  min-width: 0; /* let the card shrink below its longest command so the grid fits */
}
.install-card:hover { background: var(--bg-elev); }
.install-os { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 1.5rem; }
.install-os svg { width: 22px; height: 22px; color: var(--fg-muted); }
.install-os-name { font-family: "Fraunces", serif; font-size: 1.5rem; }
.install-arch { color: var(--fg-muted); font-size: 0.78rem; letter-spacing: 0.08em; margin-bottom: 1.2rem; text-transform: uppercase; }
.install-arch code { color: var(--accent); font-family: "Fira Code", monospace; }
.install-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 0.7rem 1rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  border-radius: 6px;
  transition: background .18s, color .18s, box-shadow .18s, transform .18s;
}
.install-link:hover {
  background: var(--accent);
  color: var(--accent-ink);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px -10px color-mix(in oklab, var(--accent) 70%, transparent);
}
.install-lede {
  color: var(--fg-dim);
  max-width: 72ch;
  margin: 0 0 1.6rem;
  font-size: 0.92rem;
  line-height: 1.6;
}
.install-lede strong { color: var(--fg); font-weight: 500; }
/* Flex row: [scrollable command] + [copy button pinned right, fade-in on hover] */
.install-cmd {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--code-bg);
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  min-width: 0;
}
.install-cmd-scroll {
  flex: 1 1 auto;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
  padding: 0.7rem 0.9rem;
  font-family: "Fira Code", monospace;
  font-size: 0.78rem;
  color: var(--code-fn);
  white-space: nowrap;
  mask-image: linear-gradient(to right, black 0, black calc(100% - 20px), transparent 100%);
  -webkit-mask-image: linear-gradient(to right, black 0, black calc(100% - 20px), transparent 100%);
}
.install-cmd-scroll::-webkit-scrollbar { height: 6px; }
.install-cmd-scroll::-webkit-scrollbar-thumb { background: var(--rule-strong); border-radius: 6px; }
.install-cmd-scroll::before {
  content: "$";
  color: var(--accent);
  opacity: 0.8;
  margin-right: 0.5rem;
}
.install-cmd.step .install-cmd-scroll::before { content: "→"; opacity: 1; }

.install-copy {
  flex-shrink: 0;
  align-self: center;
  margin: 0 8px 0 0;
  background: var(--bg-elev);
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  color: var(--fg-dim);
  font: inherit;
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  text-transform: uppercase;
  opacity: 0;
  transform: translateX(4px);
  pointer-events: none;
  transition: opacity .18s, transform .18s, color .18s, border-color .18s, background .18s;
  position: relative;
  z-index: 1;
}
.install-card:hover .install-copy,
.install-cmd:focus-within .install-copy,
.install-copy:focus-visible,
.install-copy.copied {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.install-copy:hover { color: var(--accent); border-color: var(--accent); background: var(--bg-panel); }
.install-copy.copied { color: var(--brand-green); border-color: var(--brand-green); }
.install-meta { color: var(--fg-muted); font-size: 0.75rem; margin-top: 1rem; letter-spacing: 0.04em; }

/* ---------- Callout ---------- */
.callout {
  margin-top: clamp(2rem, 4vw, 3.5rem);
  padding: clamp(2rem, 4vw, 3.5rem);
  border: 1px solid var(--rule-strong);
  background: linear-gradient(135deg, var(--bg-elev) 0%, var(--bg) 100%);
  display: grid; grid-template-columns: 2fr 1fr; gap: 2.5rem; align-items: center;
  border-radius: 12px;
  position: relative;
  overflow: hidden;
}
.callout::after {
  content: "</>";
  position: absolute;
  right: -30px; bottom: -50px;
  font-family: "Fraunces", serif;
  font-size: 18rem;
  font-style: italic;
  color: var(--accent);
  opacity: 0.06;
  line-height: 1;
}
.callout h2 {
  font-size: clamp(1.8rem, 3.4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.callout h2 .italic { color: var(--accent); }
.callout-body { color: var(--fg-dim); margin-top: 1rem; max-width: 48ch; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--rule); padding: 3rem 0 4rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2rem; }
.footer-col h4 { font-family: "Fira Code", monospace; font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--fg-muted); margin-bottom: 1rem; font-weight: 400; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0.55rem; }
.footer-col a { border: none; color: var(--fg-dim); font-size: 0.88rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; color: var(--fg-muted); font-size: 0.78rem; }

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.82rem;
  line-height: 1.6;
  margin: 0;
  max-width: 32ch;
}

/* ---------- Keyboard cheat sheet ---------- */
.shortcuts-lede {
  color: var(--fg-dim);
  max-width: 72ch;
  margin: 0 0 2rem;
  font-size: 0.92rem;
  line-height: 1.6;
}
.shortcuts-lede strong { color: var(--fg); font-weight: 500; }
.shortcuts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
}
.shortcut-group {
  background: var(--bg);
  padding: clamp(1.4rem, 2.4vw, 2rem);
}
.shortcut-group-title {
  font-family: "Fira Code", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
  font-weight: 400;
  margin: 0 0 1rem;
}
.shortcut-list { list-style: none; margin: 0; padding: 0; }
.shortcut-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--rule);
  color: var(--fg-dim);
  font-size: 0.88rem;
}
.shortcut-list li:last-child { border-bottom: none; padding-bottom: 0; }
.kbd-row { display: inline-flex; align-items: center; gap: 0.3rem; flex-shrink: 0; }
.kbd-sep { color: var(--fg-muted); font-size: 0.72rem; }
.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.6rem;
  padding: 0.18rem 0.45rem;
  font-family: "Fira Code", monospace;
  font-size: 0.78rem;
  line-height: 1;
  color: var(--fg);
  background: var(--bg-elev);
  border: 1px solid var(--rule-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
}

/* ---------- FAQ ---------- */
.faq-list {
  border-top: 1px solid var(--rule);
}
.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 0;
}
.faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 1.4rem 0;
  font-family: "Fraunces", "Iowan Old Style", Georgia, serif;
  font-weight: 500;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  font-size: clamp(1.15rem, 1.6vw, 1.4rem);
  color: var(--fg);
  transition: color .2s;
}
.faq-item > summary::-webkit-details-marker { display: none; }
.faq-item > summary::after {
  content: "+";
  font-family: "Fira Code", monospace;
  font-size: 1.3rem;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform .25s;
  width: 1.4rem;
  text-align: center;
}
.faq-item[open] > summary::after { content: "\2212"; transform: rotate(180deg); }
.faq-item > summary:hover { color: var(--accent); }
.faq-body {
  padding: 0 0 1.6rem;
  color: var(--fg-dim);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 72ch;
}
.faq-body code { color: var(--accent); font-family: "Fira Code", monospace; font-size: 0.88em; }
.faq-body em {
  font-family: "Fraunces", serif;
  font-style: italic;
  color: var(--fg);
}

/* ---------- Reveal on scroll ----------
   Elements are visible by default; JS adds .js-reveal to opt in to the hidden
   starting state, so the page still works if scripts fail. */
.reveal { transition: opacity .9s cubic-bezier(.2,.7,.3,1), transform .9s cubic-bezier(.2,.7,.3,1); }
html.js-reveal .reveal { opacity: 0; transform: translateY(24px); }
html.js-reveal .reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ----------
   Two layered breakpoints, per docs/superpowers/specs/2026-04-20-landing-responsive.md:
     · 900px — collapse all grid sections to a single column, shrink hero type,
               wrap the nav, allow screenshots to scale fluidly.
     · 480px — phone-specific refinements: smaller type, bigger tap targets,
               install commands allowed to scroll horizontally, lightbox
               suppressed in favour of native anchor behaviour. */
@media (max-width: 900px) {
  /* All grid sections collapse to a single column. */
  .hero-grid,
  .features-grid,
  .install-grid,
  .shortcuts-grid,
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  /* Screenshot strip (fig. 02–04) stacks too — at portrait widths the
     three-up grid squeezes each shot below the legibility threshold. */
  .screenshot-strip {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }
  /* The .small slot's 4/3 aspect ratio is fine portrait-side, but the
     min-height clamp was tuned for the desktop column width — drop it so
     the slot height tracks the new wider single-column layout instead of
     forcing a tiny letterbox. */
  .screenshot-slot.small { min-height: 0; }

  /* Re-assert the first-party defaults the desktop rules override. */
  .hero-graph { aspect-ratio: 16 / 10; }
  .manifesto { grid-template-columns: 1fr; }
  .feature,
  .feature.wide,
  .feature.tall { grid-column: auto; grid-row: auto; min-height: auto; }
  .mock-body { grid-template-columns: 1fr; }
  .mock-pane { border-right: none; border-bottom: 1px solid var(--mock-line); }
  .callout { grid-template-columns: 1fr; }

  /* Typography: ~20% shrink to fit portrait widths. */
  .hero-title { font-size: 40px; line-height: 1; }
  .section-head h2 { font-size: 28px; }
  body { font-size: 15px; }

  /* Hero: stack, centre the copy, let the graph/screenshot flow to full width. */
  .hero-grid > .hero-main { text-align: center; }
  .hero-grid > .hero-main .hero-meta,
  .hero-grid > .hero-main .cta-row,
  .hero-grid > .hero-main .hero-stats {
    justify-content: center;
  }
  .hero-grid > .hero-main .hero-sub { margin-left: auto; margin-right: auto; }

  /* Nav wraps so links don't overflow. */
  .nav-inner { flex-wrap: wrap; gap: 12px; }
  .nav-links { flex-wrap: wrap; gap: 1rem; }

  /* Catch-all: any raster image inside a section should scale to its container. */
  main img,
  section img { max-width: 100%; height: auto; }
}

@media (max-width: 480px) {
  /* Further type shrink for small phones. */
  .hero-title { font-size: 32px; }
  .section-head h2 { font-size: 24px; }
  body { font-size: 14px; }

  /* Tap targets ≥ 44×44 CSS-pixels (WCAG 2.5.5). */
  .btn,
  .install-link,
  .theme-toggle {
    padding: 12px 16px;
    min-height: 44px;
  }
  /* Copy button is a small secondary action; keep it comfortably tappable
     without forcing it to 44px which would blow out the install code bar. */
  .install-copy { min-height: 32px; padding: 0.5rem 0.8rem; }

  /* Install code block: horizontal scroll preserves copy-paste integrity. */
  .install-cmd-scroll,
  .feature pre { overflow-x: auto; white-space: pre; }

  /* Install card vertical rhythm: tighten padding so the card fits narrow
     screens without truncating the command line. */
  .install-card { padding: 1.4rem 1.1rem; }

  /* Section head stacks on one column for readability. */
  .section-head { flex-direction: column; align-items: start; }

  /* Hero stat grid: 2-up on tiny screens; keeps the three stats from stacking
     into a too-tall strip above the fold. */
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 1.2rem; }

  /* Drop the secondary nav-links; logo + theme toggle stay visible. */
  .nav-links { display: none; }

  /* Lightbox overlay suppressed on phones — the lightbox chrome is too small
     to be usable, so we fall through to native anchor/image behaviour. The
     companion JS guard (see assets/app.js) skips binding the click handler
     under this breakpoint; this !important rule is belt-and-braces. */
  .lightbox { display: none !important; }
}

/* ---------- Respect reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .edge { stroke-dashoffset: 0 !important; }
}