/* Comad Shared — design system shared between landing (/comad) and guide (/comad/guide) */

:root {
  --bg: #000;
  --surface: rgba(255,255,255,0.04);
  --surface-2: rgba(255,255,255,0.06);
  --surface-3: rgba(255,255,255,0.10);
  --surface2: rgba(255,255,255,0.06); /* alias for legacy markup */
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);
  --text: #fff;
  --text-bright: #fff;
  --text-dim: #868F97;
  --text-muted: #525863;

  --accent: #479FFA;
  --accent-soft: rgba(71,159,250,0.12);
  --accent-dim: rgba(71,159,250,0.10);
  --warm: #FFA16C;
  --warm-deep: #551B10;
  --teal: #FFA16C;          /* legacy teal token mapped to warm orange */
  --teal-dim: rgba(255,161,108,0.10);
  --lime: #D6FE51;
  --green: #34d399;
  --amber: #fbbf24;
  --pink: #f472b6;

  --shadow-card: 0 12px 40px rgba(0,0,0,0.32);
  --shadow-shot: 0 34px 56px rgba(0,0,0,0.42);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Pretendard Variable', 'Pretendard', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: rgba(71,159,250,0.32); color: #fff; }
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--text); }

/* Background ambience (matches guide) */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 60vw 50vh at 20% 0%, rgba(71,159,250,0.10), transparent 60%),
    radial-gradient(ellipse 50vw 40vh at 100% 20%, rgba(255,161,108,0.06), transparent 55%);
  pointer-events: none; z-index: 0;
}

/* ─── Top bar (glassmorphic sticky 60px) ─── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 60px;
  display: flex; align-items: center;
  padding: 0 2rem;
  gap: 1.5rem;
}
.topbar .brand { font-weight: 600; color: var(--text); font-size: 0.95rem; letter-spacing: -0.01em; }
.topbar .brand .sub { color: var(--text-dim); font-weight: 400; margin-left: 0.45rem; font-size: 0.82rem; }
.topbar nav { margin-left: auto; display: flex; gap: 0.15rem; overflow-x: auto; }
.topbar nav::-webkit-scrollbar { display: none; }
.topbar nav a {
  color: var(--text-dim);
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 99px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.topbar nav a:hover { color: var(--text); background: var(--surface); }
.topbar nav a.active { color: var(--text); background: var(--surface-2); }

/* ─── Container & Section ─── */
.container { max-width: 960px; margin: 0 auto; padding: 0 2rem; position: relative; z-index: 1; }
section { padding: 5rem 0; border-top: 1px solid var(--border); position: relative; z-index: 1; }
.section-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); font-weight: 600; margin-bottom: 0.6rem; }
section h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; color: var(--text-bright); margin-bottom: 0.8rem; letter-spacing: -0.02em; line-height: 1.35; }
section h2 em { font-style: normal; color: var(--accent); }
.section-desc { font-size: 0.95rem; color: var(--text-dim); max-width: 600px; margin-bottom: 2.5rem; line-height: 1.8; }

/* ─── Reveal animation ─── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ─── Scroll progress ─── */
.scroll-progress { position: fixed; top: 0; left: 0; height: 2px; background: linear-gradient(90deg, var(--accent), var(--warm)); z-index: 10000; transition: width 0.1s; }

/* ─── Code blocks ─── */
.code-flow {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem 1.4rem;
  font-family: 'SF Mono', 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.84rem; line-height: 2.1;
  color: var(--accent);
  overflow-x: auto;
}
.code-flow .dim { color: var(--text-dim); }
.code-flow .hl { color: var(--warm); }

/* ─── Tables ─── */
table { width: 100%; border-collapse: collapse; font-size: 0.86rem; margin: 0.8rem 0; }
th { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 2px solid var(--border); color: var(--text-dim); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; }
td { padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--border); color: var(--text); }
tr:hover td { background: var(--surface); }
td code { background: var(--accent-soft); padding: 0.1rem 0.4rem; border-radius: 3px; font-size: 0.8rem; color: var(--accent); }

/* ─── Footer ─── */
footer.site-footer {
  text-align: center;
  padding: 3rem 1rem 4rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  position: relative; z-index: 1;
}
footer.site-footer .links {
  display: flex; gap: 0.6rem; justify-content: center; flex-wrap: wrap; margin-top: 1rem;
}
footer.site-footer .links a {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.78rem; color: var(--text-dim);
  border: 1px solid var(--border); padding: 0.4rem 1rem; border-radius: 6px;
  transition: color 0.2s, border-color 0.2s;
}
footer.site-footer .links a:hover { border-color: var(--accent); color: var(--accent); }

/* ─── Language toggle ─── */
.lang-toggle {
  position: fixed; top: 76px; right: 1.5rem; z-index: 101;
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
  padding: 0.3rem 0.6rem; font-size: 0.72rem; font-weight: 600; color: var(--text-dim);
  cursor: pointer; transition: color 0.2s, border-color 0.2s; font-family: inherit;
}
.lang-toggle:hover { border-color: var(--accent); color: var(--accent); }
.lang-toggle .active { color: var(--accent); }

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .topbar { padding: 0 1rem; }
  .container { padding: 0 1rem; }
  section { padding: 3.5rem 0; }
}