/* StyleCraft Studio — shared stylesheet */

:root {
  --bg:        #fbfaf8;
  --surface:   #ffffff;
  --surface-2: #f4f2ee;
  --ink:       #16161a;
  --ink-2:     #3d3d46;
  --muted:     #6b6b76;
  --border:    #e5e2db;
  --accent:    #2f5fe0;
  --accent-ink:#ffffff;
  --radius:    14px;
  --maxw:      720px;
  --wide:      1040px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0e0f12;
    --surface:   #16181d;
    --surface-2: #1c1f26;
    --ink:       #eceef2;
    --ink-2:     #c6cad3;
    --muted:     #939aa6;
    --border:    #272b33;
    --accent:    #7aa2ff;
    --accent-ink:#0e0f12;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
               Inter, system-ui, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------------------------------------------------------------- layout */

.wrap  { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.wrap--wide { max-width: var(--wide); }

main { padding: 8px 0 88px; }

section { margin: 0 0 56px; }

/* ---------------------------------------------------------------- header */

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 66px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 640;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-decoration: none;
  font-size: 16.5px;
  white-space: nowrap;
}

.brand:hover { color: var(--ink); }

.brand .mark { width: 26px; height: 26px; flex: none; border-radius: 7px; }

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 15px;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
}

.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }

@media (max-width: 620px) {
  .site-header .wrap { flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 14px; padding-bottom: 14px; }
  .nav { gap: 16px; flex-wrap: wrap; font-size: 14.5px; }
}

/* ------------------------------------------------------------ typography */

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.021em; color: var(--ink); }

h1 { font-size: 2.35rem; font-weight: 700; margin: 48px 0 18px; }
h2 { font-size: 1.4rem;  font-weight: 660; margin: 44px 0 14px; }
h3 { font-size: 1.08rem; font-weight: 640; margin: 30px 0 8px; }

@media (max-width: 620px) { h1 { font-size: 1.95rem; margin-top: 36px; } }

p { margin: 0 0 18px; color: var(--ink-2); }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2.5px; }
a:hover { text-decoration-thickness: 2px; }

.lede { font-size: 1.16rem; color: var(--ink-2); max-width: 60ch; }

.eyebrow {
  font-size: 12.5px;
  font-weight: 640;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 10px;
}

ul, ol { margin: 0 0 18px; padding-left: 22px; color: var(--ink-2); }
li { margin: 0 0 7px; }

strong { color: var(--ink); font-weight: 620; }

hr { border: 0; border-top: 1px solid var(--border); margin: 44px 0; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
}

/* ----------------------------------------------------------------- hero */

.hero { padding: 76px 0 8px; }
.hero h1 { margin-top: 0; font-size: 2.9rem; max-width: 15ch; }
@media (max-width: 620px) { .hero { padding-top: 44px; } .hero h1 { font-size: 2.1rem; } }

/* --------------------------------------------------------------- buttons */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 10px;
  font-size: 15.5px;
  font-weight: 580;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform .12s ease, opacity .12s ease;
}

.btn:hover { transform: translateY(-1px); text-decoration: none; }

.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { opacity: .9; color: var(--accent-ink); }

.btn--ghost { border-color: var(--border); color: var(--ink); background: var(--surface); }
.btn--ghost:hover { color: var(--ink); border-color: var(--muted); }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 0; }

/* ----------------------------------------------------------------- cards */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 26px 22px;
}

.grid { display: grid; gap: 16px; }
@media (min-width: 700px) { .grid--2 { grid-template-columns: 1fr 1fr; } }

.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

/* app card ------------------------------------------------------------- */

.app-card { display: flex; gap: 20px; align-items: flex-start; }
.app-card .icon { width: 62px; height: 62px; border-radius: 14px; flex: none; }
.app-card .body { min-width: 0; }
.app-card h3 { margin: 0 0 4px; font-size: 1.22rem; }
.app-card .sub { color: var(--muted); font-size: 14.5px; margin: 0 0 12px; }

@media (max-width: 520px) {
  .app-card { flex-direction: column; gap: 14px; }
}

/* pills ---------------------------------------------------------------- */

.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }

.pills li {
  margin: 0;
  font-size: 13px;
  color: var(--ink-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
}

/* callout -------------------------------------------------------------- */

.callout {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 18px 20px;
  margin: 0 0 22px;
}
.callout p:last-child { margin-bottom: 0; }
.callout p:first-child { margin-top: 0; }

/* definition rows ------------------------------------------------------ */

.rows { border-top: 1px solid var(--border); margin: 20px 0 0; }

.row {
  display: grid;
  gap: 4px 28px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

@media (min-width: 700px) { .row { grid-template-columns: 220px 1fr; } }

.row dt { font-weight: 600; color: var(--ink); margin: 0; font-size: 15.5px; }
.row dd { margin: 0; color: var(--ink-2); font-size: 15.5px; }

/* ---------------------------------------------------------------- footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 34px 0 46px;
  font-size: 14.5px;
  color: var(--muted);
  background: var(--surface);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-items: center;
  justify-content: space-between;
}

.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--ink); text-decoration: underline; }

.foot-links { display: flex; flex-wrap: wrap; gap: 18px; }

.updated { color: var(--muted); font-size: 14.5px; margin: -6px 0 30px; }

/* legal page tweaks ---------------------------------------------------- */

.legal h2 { font-size: 1.22rem; margin-top: 40px; }
.legal h2:first-of-type { margin-top: 30px; }

.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin: 0 0 12px;
}
.toc p { font-weight: 620; color: var(--ink); margin: 0 0 8px; font-size: 14.5px; }
.toc ol { margin: 0; padding-left: 20px; font-size: 15px; }
.toc li { margin: 0 0 4px; }
.toc a { color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--accent); text-decoration: underline; }

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 12px; top: 12px;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 8px; z-index: 50;
}