/* monad-mcp — shared design system
   Used by index.html (connect) and dev.html (self-host guide). */

:root {
  --bg: #07070a;
  --panel: #111118;
  --panel2: #16161f;
  --panel3: #1c1c27;
  --border: #24242f;
  --border2: #2f2f3d;
  --fg: #f5f5fa;
  --muted: #9a9ab0;
  --faint: #6b6b80;
  --accent: #836ef9;
  --accent2: #a78bfa;
  --accent-soft: rgba(131, 110, 249, 0.14);
  --ok: #3acf86;
  --warn: #ffb454;
  --danger: #ff5c5c;
  --mono: ui-monospace, SFMono-Regular, Menlo, "Cascadia Code", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 50% -200px, #1a1430 0%, var(--bg) 60%);
  background-attachment: fixed;
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1000px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 820px; }

/* ---------- header / nav ---------- */
header.site {
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(7, 7, 10, 0.72);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid transparent;
}
header.site.scrolled { border-bottom-color: var(--border); }
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: -0.01em; color: var(--fg);
}
.logo:hover { text-decoration: none; }
.logo .dot {
  width: 14px; height: 14px; border-radius: 4px;
  background: var(--accent); box-shadow: 0 0 18px var(--accent);
}
.logo .tag {
  font-family: var(--mono); font-size: 11px; color: var(--accent2);
  border: 1px solid var(--border); border-radius: 6px; padding: 1px 7px; font-weight: 600;
}
nav a { color: var(--muted); margin-left: 22px; font-size: 14px; }
nav a:hover { color: var(--fg); text-decoration: none; }
@media (max-width: 640px) {
  nav a { margin-left: 14px; font-size: 13px; }
  nav a.hide-sm { display: none; }
}

/* ---------- hero ---------- */
.hero { text-align: center; padding: 64px 0 36px; }
.badge {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 12px; color: var(--accent2);
  border: 1px solid var(--border); background: var(--panel);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 22px;
}
.badge .live { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px var(--ok); }
h1 { font-size: clamp(34px, 6vw, 60px); line-height: 1.05; margin: 0 0 18px; letter-spacing: -0.03em; }
h1 .grad {
  background: linear-gradient(100deg, var(--accent) 10%, #d6c7ff 60%, var(--accent2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sub { font-size: clamp(16px, 2.4vw, 21px); color: var(--muted); max-width: 700px; margin: 0 auto 32px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 11px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: all .15s ease;
}
.btn.primary { background: var(--accent); color: #fff; box-shadow: 0 6px 30px -8px var(--accent); }
.btn.primary:hover { background: var(--accent2); text-decoration: none; transform: translateY(-1px); }
.btn.ghost { background: var(--panel); border-color: var(--border); color: var(--fg); }
.btn.ghost:hover { border-color: var(--accent); text-decoration: none; }

.kpis { display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }
.kpi { text-align: center; }
.kpi .n { font-size: 30px; font-weight: 800; color: var(--fg); }
.kpi .l { color: var(--muted); font-size: 13px; }

/* ---------- sections ---------- */
section { padding: 56px 0; }
section.tight { padding: 40px 0; }
h2 { font-size: clamp(24px, 4vw, 34px); letter-spacing: -0.02em; margin: 0 0 8px; text-align: center; }
h2.left { text-align: left; }
.lead { color: var(--muted); text-align: center; max-width: 660px; margin: 0 auto 36px; }
.lead.left { text-align: left; margin-left: 0; }
.eyebrow {
  text-align: center; text-transform: uppercase; letter-spacing: 0.14em;
  font-size: 12px; font-weight: 700; color: var(--accent2); margin: 0 0 10px;
}

/* ---------- cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.card .ic { font-size: 22px; margin-bottom: 10px; display: block; }

/* ---------- connect tabs ---------- */
.connect {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 18px; overflow: hidden;
}
.tabbar { display: flex; gap: 0; background: var(--panel2); border-bottom: 1px solid var(--border); overflow-x: auto; }
.tab-btn {
  appearance: none; background: transparent; border: none; cursor: pointer;
  color: var(--muted); font-family: var(--sans); font-size: 14px; font-weight: 600;
  padding: 16px 20px; white-space: nowrap; border-bottom: 2px solid transparent;
  display: inline-flex; align-items: center; gap: 8px;
}
.tab-btn:hover { color: var(--fg); }
.tab-btn[aria-selected="true"] { color: var(--fg); border-bottom-color: var(--accent); background: var(--panel); }
.tab-btn .badge-mini {
  font-size: 10px; font-weight: 700; border-radius: 5px; padding: 1px 6px;
  background: var(--accent-soft); color: var(--accent2);
}
.tab-panel { padding: 24px; display: none; }
.tab-panel.active { display: block; }
.tab-panel h3 { margin: 0 0 4px; font-size: 17px; }
.tab-panel .desc { color: var(--muted); font-size: 14px; margin: 0 0 16px; }
.tab-panel .substep { color: var(--faint); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; margin: 18px 0 8px; }
.tab-panel .substep:first-child { margin-top: 0; }
.plain-steps { display: grid; gap: 12px; margin-top: 16px; }
.plain-step {
  display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: start;
  background: var(--panel2); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px;
}
.plain-step > span {
  display: grid; place-items: center; width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent); color: #fff; font-weight: 800; font-size: 13px;
}
.plain-step strong { display: block; font-size: 14px; margin: 2px 0 3px; }
.plain-step p { color: var(--muted); font-size: 13.5px; margin: 0; }
.plain-step .codeblock { margin-top: 8px; }
.try-card {
  background: var(--panel2); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 15px; color: var(--muted); font-size: 13.5px;
}
.try-card strong { color: var(--fg); }
/* ---------- code blocks + copy ---------- */
.codeblock { position: relative; margin: 0 0 6px; }
.codeblock pre {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 14px 52px 14px 16px; overflow: auto;
  font-family: var(--mono); font-size: 13px; line-height: 1.6; margin: 0;
  white-space: pre; color: #e8e8f2;
}
.codeblock pre.wrap-code { white-space: pre-wrap; word-break: break-word; }
.codeblock.copy-url pre {
  white-space: pre-wrap; word-break: break-all; padding-right: 94px;
}
.copy {
  position: absolute; top: 9px; right: 9px;
  appearance: none; cursor: pointer;
  background: var(--panel2); border: 1px solid var(--border); border-radius: 7px;
  color: var(--muted); font-family: var(--sans); font-size: 11px; font-weight: 600;
  padding: 5px 9px; transition: all .12s ease;
}
.copy:hover { color: var(--fg); border-color: var(--accent); }
.copy.copied { color: var(--ok); border-color: var(--ok); }
.tok-c { color: var(--faint); }   /* comment */
.tok-k { color: var(--accent2); } /* keyword/flag */
.tok-s { color: var(--ok); }      /* string */
@media (max-width: 520px) {
  .codeblock.copy-url pre {
    padding-right: 16px;
    font-size: 11px;
    white-space: normal;
    word-break: normal;
  }
  .codeblock.copy-url .copy {
    position: static;
    width: 100%;
    margin-top: 8px;
    padding: 8px 10px;
  }
}

code.inl {
  font-family: var(--mono); background: var(--panel2); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 5px; font-size: 0.9em; color: #e8e8f2;
}

/* ---------- callouts ---------- */
.callout {
  border-radius: 10px; padding: 13px 15px; font-size: 13.5px; margin: 14px 0;
  border: 1px solid var(--border); background: var(--panel2); color: var(--muted);
}
.callout strong { color: var(--fg); }
.callout.warn { background: rgba(255, 180, 84, 0.08); border-color: var(--warn); color: #ffd9a0; }
.callout.warn strong { color: #ffe9c7; }
.callout.info { background: var(--accent-soft); border-color: var(--border2); color: #cfc6ff; }
.callout.info strong { color: #ece7ff; }
.callout.ok { background: rgba(58, 207, 134, 0.08); border-color: rgba(58,207,134,0.4); color: #aef0cd; }

/* ---------- live demo ---------- */
.demo { background: var(--panel); border: 1px solid var(--border); border-radius: 18px; overflow: hidden; }
.demo .bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; background: var(--panel2); border-bottom: 1px solid var(--border); }
.demo .bar .d { width: 11px; height: 11px; border-radius: 50%; }
.demo .bar .d.r { background: #ff5f57; }
.demo .bar .d.y { background: #febc2e; }
.demo .bar .d.g { background: #28c840; }
.demo .bar .t { margin-left: 10px; color: var(--muted); font-size: 13px; font-family: var(--mono); }
.demo .body { padding: 18px; }
.demo .row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.demo select, .demo input, .demo button {
  font-family: var(--mono); font-size: 13px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg); color: var(--fg); padding: 10px 12px;
}
.demo input { flex: 1; min-width: 220px; }
.demo button { background: var(--accent); color: #fff; border-color: var(--accent); cursor: pointer; font-weight: 600; }
.demo button:hover { background: var(--accent2); }
.demo .examples { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.demo .chip { font-size: 12px; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; cursor: pointer; background: var(--panel2); }
.demo .chip:hover { border-color: var(--accent); color: var(--fg); }
.demo pre { background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 14px; overflow: auto; font-family: var(--mono); font-size: 13px; margin: 0; max-height: 320px; white-space: pre-wrap; word-break: break-word; }
.note { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* ---------- tools grid ---------- */
.toolgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.tool { font-family: var(--mono); font-size: 12.5px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; color: var(--fg); }
.tool.w { border-left: 3px solid var(--accent); }
.tool.r { border-left: 3px solid var(--ok); }

/* ---------- steps ---------- */
.steps { counter-reset: s; max-width: 760px; margin: 0 auto; }
.step { counter-increment: s; position: relative; padding: 0 0 22px 48px; }
.step:before { content: counter(s); position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 9px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 700; }
.step:not(:last-child):after { content: ""; position: absolute; left: 15px; top: 36px; bottom: 0; width: 2px; background: var(--border); }
.step h4 { margin: 4px 0 4px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }
.step .codeblock { margin-top: 12px; }

/* ---------- developer teaser (main page) ---------- */
.dev-teaser {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--border); border-radius: 18px; padding: 32px;
  display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
}
.dev-teaser .checks { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 8px; }
.dev-teaser .checks li { color: var(--muted); font-size: 14px; padding-left: 26px; position: relative; }
.dev-teaser .checks li:before { content: "→"; position: absolute; left: 0; color: var(--accent2); font-weight: 700; }
@media (max-width: 700px) { .dev-teaser { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
footer.site { border-top: 1px solid var(--border); padding: 30px 0 50px; color: var(--muted); font-size: 13px; text-align: center; }
footer.site p { margin: 6px 0; }

/* ---------- TOC (dev page) ---------- */
.toc { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 18px 22px; margin: 0 0 36px; }
.toc strong { display: block; font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--faint); margin-bottom: 10px; }
.toc ol { margin: 0; padding-left: 20px; color: var(--muted); columns: 2; column-gap: 28px; }
.toc ol li { margin: 4px 0; }
@media (max-width: 600px) { .toc ol { columns: 1; } }
.doc h2 { text-align: left; margin-top: 8px; scroll-margin-top: 80px; }
.doc h3 { margin: 26px 0 8px; font-size: 18px; scroll-margin-top: 80px; }
.doc p, .doc li { color: var(--muted); }
.doc ul { padding-left: 20px; }
.doc li { margin: 6px 0; }
.doc .sec { padding: 10px 0 26px; border-bottom: 1px solid var(--border); margin-bottom: 26px; }
.doc .sec:last-child { border-bottom: none; }