/* envdoctor — GitHub Pages site styles */

:root {
  color-scheme: light dark;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Menlo", "Consolas",
    "Liberation Mono", monospace;

  /* Light palette */
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --bg-elev: #ffffff;
  --surface: #ffffff;
  --border: #e2e6ec;
  --border-strong: #d0d7de;
  --text: #1c2128;
  --text-soft: #57606a;
  --text-faint: #8b949e;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --accent-ink: #1d4ed8;
  --success: #1a7f37;
  --warn: #9a6700;
  --error: #cf222e;
  --shadow: 0 1px 2px rgba(27, 31, 36, 0.06), 0 6px 24px rgba(27, 31, 36, 0.06);
  --shadow-lg: 0 12px 40px rgba(27, 31, 36, 0.12);

  /* Terminal palette (stable across themes) */
  --term-bg: #0d1117;
  --term-border: #1f2733;
  --term-text: #c9d1d9;
  --term-dim: #8b949e;
  --term-green: #3fb950;
  --term-yellow: #d29922;
  --term-red: #f85149;
  --term-blue: #58a6ff;
  --term-cyan: #39c5cf;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f14;
    --bg-soft: #0f141b;
    --bg-elev: #131a22;
    --surface: #131a22;
    --border: #232c37;
    --border-strong: #2d3742;
    --text: #e6edf3;
    --text-soft: #9aa7b4;
    --text-faint: #6b7684;
    --accent: #4f8cff;
    --accent-soft: #16233d;
    --accent-ink: #7aa7ff;
    --success: #3fb950;
    --warn: #d29922;
    --error: #f85149;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 50px rgba(0, 0, 0, 0.6);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; margin: 0; }

.wrap {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 30px; height: 30px;
  display: block;
  object-fit: contain;
}
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { color: var(--text-soft); font-size: 0.92rem; font-weight: 500; }
.nav a:hover { color: var(--text); text-decoration: none; }
.nav-downloads {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-soft);
}
.nav-downloads svg { width: 14px; height: 14px; }
@media (max-width: 720px) { .nav .nav-link { display: none; } .nav-downloads { display: none; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.06s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover { background: var(--bg-soft); }
.btn svg { width: 18px; height: 18px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 88px 0 64px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 50% 0%, var(--accent-soft) 0%, transparent 70%);
  opacity: 0.7;
  z-index: -1;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: var(--shadow);
}
.eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
}
.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  margin: 26px 0 0;
  font-weight: 800;
}
.hero .tagline {
  max-width: 640px;
  margin: 18px auto 0;
  font-size: clamp(1.05rem, 2.4vw, 1.28rem);
  color: var(--text-soft);
}
.hero .subline {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent-ink);
  font-weight: 600;
}
.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 30px;
}
.hero-install {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  max-width: 420px;
  margin: 24px auto 0;
}
.hero-ph {
  display: flex;
  justify-content: center;
  margin-top: 28px;
}
.hero-ph img {
  display: block;
  width: 250px;
  height: 54px;
}

/* ---------- Copy field ---------- */
.copy-field {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 10px;
  padding: 4px 4px 4px 14px;
  width: 100%;
  overflow: hidden;
}
.copy-field code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--term-text);
  white-space: nowrap;
  overflow-x: auto;
  flex: 1;
}
.copy-field code::before { content: "$ "; color: var(--term-green); }
.copy-field code.no-prompt::before { content: ""; }
.copy-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: 7px;
  border: 1px solid var(--term-border);
  background: #161b22;
  color: var(--term-dim);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: color 0.15s, border-color 0.15s;
}
.copy-btn:hover { color: var(--term-text); border-color: #30363d; }
.copy-btn.copied { color: var(--term-green); border-color: var(--term-green); }
.copy-btn svg { width: 14px; height: 14px; }

/* ---------- Sections ---------- */
section { padding: 68px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 800; }
.section-head p { color: var(--text-soft); margin-top: 12px; font-size: 1.05rem; }
.alt { background: var(--bg-soft); border-block: 1px solid var(--border); }

/* ---------- Terminal demo ---------- */
.terminal {
  max-width: 760px;
  margin: 0 auto;
  border-radius: 14px;
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--term-border);
}
.terminal-bar .tdot { width: 12px; height: 12px; border-radius: 50%; }
.tdot.r { background: #ff5f56; }
.tdot.y { background: #ffbd2e; }
.tdot.g { background: #27c93f; }
.terminal-bar .ttitle {
  margin-left: 8px;
  color: var(--term-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.terminal-body {
  padding: 18px 20px 22px;
  overflow-x: auto;
}
.terminal-body pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--term-text);
  white-space: pre;
}
.terminal-cmd {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--term-text);
  margin-bottom: 14px;
}
.terminal-cmd .p { color: var(--term-green); }
.term-red { color: var(--term-red); }
.term-yellow { color: var(--term-yellow); }
.term-green { color: var(--term-green); }
.term-blue { color: var(--term-blue); }
.term-cyan { color: var(--term-cyan); }
.term-dim { color: var(--term-dim); }

/* ---------- Features grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.12s ease, border-color 0.12s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.card .ic {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent-ink);
  margin-bottom: 16px;
}
.card .ic svg { width: 22px; height: 22px; }
.card h3 { font-size: 1.08rem; font-weight: 700; }
.card p { margin: 8px 0 0; color: var(--text-soft); font-size: 0.94rem; }
.card .sev {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
}
.sev.err { background: color-mix(in srgb, var(--error) 14%, transparent); color: var(--error); }
.sev.warn { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }
.sev.ok { background: color-mix(in srgb, var(--success) 14%, transparent); color: var(--success); }

/* ---------- Install tabs ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 26px;
}
.tab {
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.14s ease;
}
.tab:hover { border-color: var(--border-strong); color: var(--text); }
.tab[aria-selected="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.tab .pending {
  font-size: 0.66rem;
  opacity: 0.75;
  margin-left: 5px;
}
.panel {
  max-width: 720px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px;
  box-shadow: var(--shadow);
}
.panel[hidden] { display: none; }
.panel .lang-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.panel h3 { font-size: 1.25rem; font-weight: 700; }
.panel .reg-link { font-size: 0.85rem; font-weight: 600; }
.panel .label { font-size: 0.8rem; color: var(--text-faint); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; margin: 18px 0 8px; }
.panel .detects { color: var(--text-soft); font-size: 0.92rem; margin: 4px 0 0; }
.panel .detects code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 6px;
  color: var(--accent-ink);
}
.panel .note {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 9px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  font-size: 0.86rem;
  color: var(--text);
}

/* ---------- Usage ---------- */
.usage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  align-items: start;
}
@media (max-width: 820px) { .usage-grid { grid-template-columns: 1fr; } }
.code-block {
  background: var(--term-bg);
  border: 1px solid var(--term-border);
  border-radius: 12px;
  overflow: hidden;
}
.code-block .cb-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 14px;
  border-bottom: 1px solid var(--term-border);
  color: var(--term-dim);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.code-block pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--term-text);
}
.steps { display: grid; gap: 16px; margin-top: 26px; }
.step {
  display: flex;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.step .num {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 8px;
  display: grid; place-items: center;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 700;
  font-family: var(--font-mono);
}
.step h4 { margin: 0; font-size: 1rem; }
.step p { margin: 4px 0 0; color: var(--text-soft); font-size: 0.92rem; }
.step code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  color: var(--accent-ink);
}

/* ---------- Why local-first ---------- */
.why {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 8px;
}
.why .pill {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.why .pill h3 { font-size: 1rem; display: flex; align-items: center; gap: 8px; }
.why .pill h3 svg { width: 18px; height: 18px; color: var(--success); }
.why .pill p { margin: 8px 0 0; color: var(--text-soft); font-size: 0.9rem; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 48px 0 36px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }
.footer-grid h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin: 0 0 14px;
}
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer-grid a { color: var(--text-soft); font-size: 0.92rem; }
.footer-grid a:hover { color: var(--text); }
.footer-brand p { color: var(--text-soft); font-size: 0.92rem; margin: 12px 0 0; max-width: 320px; }
.footer-bottom {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-faint);
  font-size: 0.85rem;
}

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}