/* CtxAnt landing — shared styles. Hand-rolled so the whole site is one
   static folder on Vercel, no build step, no framework. */

:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #0a0a0a;
  --muted: #555;
  --border: rgba(0,0,0,0.08);
  --card: #f7f7f9;
  --accent: #8a5cf6;       /* violet-500 */
  --accent-dark: #6d28d9;  /* violet-700 */
  --accent-fg: #ffffff;
  --success: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --radius: 12px;
  --max: 1100px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0f;
    --fg: #f5f5f5;
    --muted: #a1a1aa;
    --border: rgba(255,255,255,0.10);
    --card: #16161c;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter",
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Layout ──────────────────────────────────────────────────────────── */

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 72px 0; border-top: 1px solid var(--border); }
section:first-of-type { border-top: 0; }

/* ── Nav ─────────────────────────────────────────────────────────────── */

nav.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
nav.top .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
nav.top a.logo {
  font-weight: 700; font-size: 18px; color: var(--fg); text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
}
nav.top a.logo .mark {
  width: 26px; height: 26px;
  /* The icon PNG is itself a rounded-square brand mark, so no extra
     border-radius or background gradient needed here — just paint it. */
  background-image: url("/assets/favicon.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  /* The HTML still contains a "✦" character inside .mark for accessibility
     fallback if the image 404s (e.g. opened from a local filesystem). We
     hide the glyph but keep it screen-reader-reachable. */
  font-size: 0; color: transparent;
  display: inline-block;
}
nav.top .links { display: flex; gap: 20px; }
nav.top .links a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav.top .links a:hover { color: var(--fg); }

/* ── Hero ────────────────────────────────────────────────────────────── */

.hero { padding-top: 96px; padding-bottom: 56px; text-align: left; }
.hero .eyebrow {
  display: inline-block; font-size: 12px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  padding: 6px 10px; border-radius: 999px; font-weight: 600;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.03; letter-spacing: -0.02em; margin: 0 0 20px;
  font-weight: 700;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--accent), #ec4899);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero p.lede {
  font-size: clamp(17px, 1.5vw, 20px);
  color: var(--muted); max-width: 680px; margin: 0 0 28px;
}
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 22px; border-radius: 10px;
  font-size: 15px; font-weight: 600; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: transform .08s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost {
  background: transparent; color: var(--fg); border-color: var(--border);
}
.btn-ghost:hover { background: var(--card); }

.hero .meta {
  margin-top: 18px; font-size: 13px; color: var(--muted);
  display: flex; gap: 16px; flex-wrap: wrap;
}
.hero .meta span::before { content: "•"; margin-right: 8px; opacity: 0.5; }
.hero .meta span:first-child::before { content: none; margin: 0; }

/* ── Hero demo strip ─────────────────────────────────────────────────── */

.demo-strip {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin: 40px 0 0;
}
.demo-strip .tile {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px;
  display: flex; flex-direction: column; gap: 10px;
}
.demo-strip .tile .thumb {
  aspect-ratio: 16/10; border-radius: 8px; background: #1a1a22;
  display: grid; place-items: center; color: #888; font-size: 12px;
  background-image: linear-gradient(135deg, #1a1a22, #2a2540);
  overflow: hidden;
}
.demo-strip .tile .thumb img,
.demo-strip .tile .thumb video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.demo-strip .tile h3 { font-size: 15px; margin: 0; }
.demo-strip .tile p { font-size: 13px; color: var(--muted); margin: 0; }

@media (max-width: 760px) {
  .demo-strip { grid-template-columns: 1fr; }
}

/* ── Positioning table ───────────────────────────────────────────────── */

.positioning {
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  border: 1px solid var(--border); border-radius: var(--radius);
}
.positioning table { width: 100%; border-collapse: collapse; font-size: 14px; }
.positioning th, .positioning td {
  padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border);
}
.positioning tr:last-child td { border-bottom: 0; }
.positioning th { background: var(--card); font-weight: 600; }
.positioning td.check { color: var(--success); font-weight: 600; }
.positioning td.cross { color: var(--danger); }
.positioning .ctxant-col { background: color-mix(in srgb, var(--accent) 8%, transparent); }

/* ── Use-case grid ───────────────────────────────────────────────────── */

.usecases {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.usecase {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  display: flex; flex-direction: column; gap: 8px;
}
.usecase h3 { margin: 0; font-size: 16px; }
.usecase .emoji { font-size: 26px; line-height: 1; }
.usecase p { margin: 0; font-size: 14px; color: var(--muted); }
.usecase .cmd {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px; background: var(--bg); color: var(--fg);
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px;
  margin-top: 6px;
}

@media (max-width: 900px) { .usecases { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .usecases { grid-template-columns: 1fr; } }

/* ── How it works ────────────────────────────────────────────────────── */

.steps {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.step {
  display: flex; flex-direction: column; gap: 10px;
}
.step .num {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent); color: var(--accent-fg);
  display: grid; place-items: center;
  font-weight: 700; font-size: 14px;
}
.step h3 { margin: 0; font-size: 17px; }
.step p { margin: 0; font-size: 14px; color: var(--muted); }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }

/* ── FAQ ──────────────────────────────────────────────────────────────── */

.faq details {
  border-bottom: 1px solid var(--border); padding: 18px 0; cursor: pointer;
}
.faq details summary {
  font-size: 17px; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.faq details summary::-webkit-details-marker { display: none; }
.faq details summary::after {
  content: "+"; font-size: 24px; color: var(--muted); line-height: 1;
  transition: transform .2s ease;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); margin: 10px 0 0; max-width: 820px; }

/* ── Headings ────────────────────────────────────────────────────────── */

h2.section-title {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700; letter-spacing: -0.01em; margin: 0 0 8px;
}
p.section-sub { color: var(--muted); font-size: 16px; margin: 0 0 32px; }

/* ── CTA strip ───────────────────────────────────────────────────────── */

.cta-strip {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white; border-radius: var(--radius);
  padding: 40px; text-align: center;
}
.cta-strip h2 {
  font-size: clamp(26px, 3vw, 34px); margin: 0 0 8px;
  color: white;
}
.cta-strip p { margin: 0 0 20px; opacity: 0.9; }
.cta-strip .btn-primary {
  background: white; color: var(--accent-dark);
}
.cta-strip .btn-primary:hover { background: #f3f3f3; }

/* ── Footer ──────────────────────────────────────────────────────────── */

footer {
  padding: 40px 0 60px; border-top: 1px solid var(--border);
  color: var(--muted); font-size: 13px;
}
footer .wrap {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
footer a { color: var(--muted); text-decoration: none; margin-right: 16px; }
footer a:hover { color: var(--fg); }

/* ── Generic content pages (privacy, install) ────────────────────────── */

.prose { max-width: 720px; margin: 60px auto; padding: 0 24px 80px; }
.prose h1 { font-size: 32px; margin: 0 0 8px; }
.prose h2 { font-size: 20px; margin-top: 36px; }
.prose p, .prose li { color: var(--fg); }
.prose code {
  background: var(--card); padding: 2px 6px; border-radius: 4px;
  font-size: 0.92em;
}
.prose pre {
  background: var(--card); border: 1px solid var(--border);
  padding: 14px 16px; border-radius: 8px; overflow-x: auto;
  font-size: 13px;
}
.prose .note {
  border-left: 3px solid var(--accent);
  padding: 12px 16px;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  border-radius: 6px; margin: 18px 0;
}

/* ── Copy-paste install command block ────────────────────────────────── */

/* Used on install.html's hero. The <pre> holds the command, the button
   floats top-right. We don't rely on JS for the visuals — if the button
   fails, the command is still selectable text. */
.install-cmd {
  position: relative;
  margin: 14px 0 6px;
}
.install-cmd pre {
  margin: 0;
  padding: 18px 110px 18px 18px;     /* right padding clears the Copy button */
  background: #0b0b0f;
  color: #e8e8f0;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  line-height: 1.5;
}
.install-cmd pre code { background: none; padding: 0; color: inherit; }
.install-cmd .copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: #e8e8f0;
  cursor: pointer;
  transition: background .12s ease;
  font-family: inherit;
}
.install-cmd .copy-btn:hover { background: rgba(255,255,255,0.15); }
.install-cmd .copy-btn.copied {
  background: var(--success);
  color: white;
  border-color: transparent;
}

/* ── Templates gallery ───────────────────────────────────────────────── */

.gallery {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.tpl-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  display: flex; flex-direction: column; gap: 10px;
}
.tpl-card .emoji { font-size: 32px; line-height: 1; }
.tpl-card h3 { margin: 0; font-size: 17px; }
.tpl-card p { margin: 0; font-size: 14px; color: var(--muted); flex: 1; }
.tpl-card .chips {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px;
}
.tpl-card .chip {
  font-size: 11px; padding: 3px 8px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--border); color: var(--muted);
}
.tpl-card .install {
  margin-top: 10px; display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 14px; border-radius: 8px; text-decoration: none;
  background: var(--accent); color: white; font-weight: 600; font-size: 14px;
  justify-content: center;
}
.tpl-card .install:hover { background: var(--accent-dark); }

@media (max-width: 900px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .gallery { grid-template-columns: 1fr; } }

.gallery-header {
  display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px;
}
.gallery-header input[type="search"] {
  flex: 1; min-width: 200px; padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--card); color: var(--fg); font-size: 14px;
}