/* ===== Steam Idle Bot — docs site ===== */
:root {
  --bg: #0b0f14;
  --bg-2: #0e141c;
  --surface: #121925;
  --surface-2: #16202e;
  --text: #e6edf3;
  --muted: #9aa6b2;
  --link: #66c0f4;
  --accent: #66c0f4;
  --accent-2: #a3cf06;
  --border: #1f2a38;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
  --radius: 16px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f8fb;
    --bg-2: #eef3f8;
    --surface: #ffffff;
    --surface-2: #f3f7fb;
    --text: #0d1b2a;
    --muted: #54667a;
    --link: #1769aa;
    --accent: #1b8bd0;
    --accent-2: #6f9e08;
    --border: #d8e2ec;
    --shadow: 0 16px 40px rgba(20, 50, 80, .12);
  }
}
[data-theme="light"] {
  --bg: #f5f8fb;
  --bg-2: #eef3f8;
  --surface: #ffffff;
  --surface-2: #f3f7fb;
  --text: #0d1b2a;
  --muted: #54667a;
  --link: #1769aa;
  --accent: #1b8bd0;
  --accent-2: #6f9e08;
  --border: #d8e2ec;
  --shadow: 0 16px 40px rgba(20, 50, 80, .12);
}
[data-theme="dark"] {
  --bg: #0b0f14;
  --bg-2: #0e141c;
  --surface: #121925;
  --surface-2: #16202e;
  --text: #e6edf3;
  --muted: #9aa6b2;
  --link: #66c0f4;
  --accent: #66c0f4;
  --accent-2: #a3cf06;
  --border: #1f2a38;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 540px at 12% -8%, rgba(102, 192, 244, .14), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(163, 207, 6, .10), transparent 55%),
    var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); }
.container { max-width: 1080px; margin: 0 auto; padding: 0 1.25rem; }

/* ===== Header / nav ===== */
header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(10px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 800; letter-spacing: .2px; }
.brand a { color: inherit; text-decoration: none; }
.brand .logo {
  width: 30px; height: 30px; display: grid; place-items: center;
  border-radius: 9px; background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121c; font-size: 1rem;
}
.nav-links { display: flex; align-items: center; gap: 1.1rem; }
.nav-links a { color: var(--text); text-decoration: none; opacity: .85; font-weight: 600; font-size: .95rem; }
.nav-links a:hover { opacity: 1; color: var(--accent); }
.toggle {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  padding: .4rem .65rem; border-radius: 9px; cursor: pointer; font-size: .85rem;
}
.toggle:hover { border-color: var(--accent); }
@media (max-width: 680px) { .nav-links a:not(.keep) { display: none; } }

/* ===== Hero ===== */
.hero { padding: 3.4rem 0 1rem; text-align: center; }
.hero-banner {
  display: block; width: 100%; max-width: 1000px; margin: 0 auto;
  border-radius: var(--radius); box-shadow: var(--shadow);
  animation: rise .7s ease both;
}
.hero h1 { font-size: clamp(2rem, 3.2vw + 1rem, 3.1rem); margin: 1.6rem 0 .4rem; font-weight: 800; }
.hero .lede { color: var(--muted); font-size: 1.15rem; max-width: 720px; margin: 0 auto; }
.cta { display: flex; gap: .8rem; justify-content: center; margin-top: 1.6rem; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem; text-decoration: none; font-weight: 700;
  padding: .7rem 1.15rem; border-radius: 12px; border: 1px solid transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06121c;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(102, 192, 244, .35); }
.btn.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn.secondary:hover { border-color: var(--accent); box-shadow: none; }
.stat-row { display: flex; gap: .6rem; justify-content: center; flex-wrap: wrap; margin: 1.6rem 0 .5rem; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: .35rem .85rem; font-size: .85rem; color: var(--muted); font-weight: 600; }
.stat b { color: var(--text); }

/* ===== Sections ===== */
section { padding: 2.6rem 0; }
.section-head { text-align: center; margin-bottom: 1.8rem; }
.section-head h2 { font-size: clamp(1.4rem, 1.6vw + 1rem, 2rem); margin: 0 0 .35rem; }
.section-head p { color: var(--muted); margin: 0; }
.eyebrow { text-transform: uppercase; letter-spacing: 2px; font-size: .75rem; font-weight: 700; color: var(--accent); display: block; margin-bottom: .5rem; }

/* feature grid */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.card .ic { font-size: 1.6rem; display: inline-grid; place-items: center; margin-bottom: .5rem; }
.card h3 { margin: .2rem 0 .4rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: .96rem; }
@media (max-width: 880px) { .features { grid-template-columns: 1fr; } }

/* diagram frame */
.figure {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem; box-shadow: var(--shadow); margin: 0 0 1.2rem;
}
.figure img { display: block; width: 100%; border-radius: 10px; }
.figure figcaption { color: var(--muted); font-size: .9rem; text-align: center; margin-top: .7rem; }

/* code block */
.codeblock { background: #0a0e14; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.codeblock .bar { display: flex; gap: .5rem; padding: .7rem .9rem; border-bottom: 1px solid var(--border); }
.codeblock .dot { width: 11px; height: 11px; border-radius: 50%; }
.codeblock .dot.r { background: #ff5f56; } .codeblock .dot.y { background: #ffbd2e; } .codeblock .dot.g { background: #27c93f; }
.codeblock pre { margin: 0; padding: 1.1rem 1.2rem; overflow: auto; }
.codeblock code { background: none; color: #d7e3ee; font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace; font-size: .9rem; line-height: 1.75; }
.codeblock .cm { color: #6b8299; } .codeblock .ac { color: var(--accent-2); }

/* lang cards */
.lang-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.lang-card { background: linear-gradient(180deg, var(--surface), var(--surface-2)); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem; }
.lang-card h3 { margin: 0 0 .6rem; }
.lang-card a { display: inline-block; margin: .2rem .5rem .2rem 0; font-weight: 600; }
@media (max-width: 720px) { .lang-grid { grid-template-columns: 1fr; } }

/* ===== Doc-page article ===== */
.doc-hero { padding: 2.6rem 0 .5rem; }
.doc-hero h1 { font-size: clamp(1.7rem, 2.4vw + 1rem, 2.4rem); margin: 0 0 .4rem; }
.doc-hero .muted { color: var(--muted); margin: 0; }
main.doc { padding: 1rem 0 3rem; }
article { background: linear-gradient(180deg, var(--surface), var(--surface-2)); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem 1.8rem; box-shadow: var(--shadow); }
article h1, article h2, article h3 { line-height: 1.3; }
article h2 { margin-top: 1.8rem; padding-top: 1rem; border-top: 1px solid var(--border); }
article a { text-decoration: none; } article a:hover { text-decoration: underline; }
article pre { background: #0a0e14; color: #d7e3ee; padding: 1rem 1.1rem; border-radius: 12px; overflow: auto; border: 1px solid var(--border); }
article code { background: color-mix(in oklab, var(--surface) 80%, transparent); padding: .12rem .38rem; border-radius: 6px; font-size: .9em; }
article pre code { background: none; padding: 0; }
article table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
article th, article td { border: 1px solid var(--border); padding: .55rem .7rem; text-align: left; }
article th { background: var(--surface-2); }
article blockquote { margin: 1rem 0; padding: .6rem 1rem; border-left: 3px solid var(--accent); background: var(--surface-2); border-radius: 0 10px 10px 0; color: var(--muted); }

/* ===== Footer ===== */
footer { border-top: 1px solid var(--border); padding: 2rem 0; margin-top: 2rem; color: var(--muted); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.badge-row { display: flex; gap: .55rem; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; gap: .35rem; font-size: .82rem; border: 1px solid var(--border); border-radius: 999px; padding: .28rem .7rem; color: var(--muted); text-decoration: none; }
.badge:hover { border-color: var(--accent); color: var(--text); }

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.reveal { animation: rise .6s ease both; }
@media (prefers-reduced-motion: reduce) { *, .hero-banner { animation: none !important; scroll-behavior: auto; } }