/* DevProfile — Design System (ui-ux-pro-max) · LIGHT theme
 * Palette: White + slate + blue accent
 * Type:    Space Grotesk (display) · Noto Sans TC + Archivo (body) · mono code
 * Motion:  200ms ease-out; disabled under prefers-reduced-motion
 * A11y:    text #0F172A on white (>4.5:1), muted ≥ #475569, visible borders #E2E8F0
 */

:root {
  color-scheme: light;

  /* Palette — white + slate + blue */
  --bg: #FFFFFF;
  --bg-tint: #F8FAFC;
  --surface: #FFFFFF;
  --surface-2: #F1F5F9;
  --border: #E2E8F0;
  --border-strong: #CBD5E1;
  --text: #0F172A;
  --text-muted: #475569;
  --text-dim: #64748B;
  --accent: #2563EB;
  --accent-hover: #1D4ED8;
  --accent-soft: rgba(37, 99, 235, .10);
  --code-bg: #F1F5F9;
  --code-text: #0F172A;
  --danger: #DC2626;
  --danger-soft: #FEF2F2;

  /* Shape */
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;

  /* Motion — 200–300ms, ease-out enter (per ux-guidelines) */
  --dur: 200ms;
  --ease: cubic-bezier(.22, 1, .36, 1);

  /* Focus ring: white gap + blue (keyboard only via :focus-visible) */
  --ring: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);

  --font-display: 'Space Grotesk', 'Noto Sans TC', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Noto Sans TC', 'Archivo', Inter, ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, 'JetBrains Mono', Consolas, monospace;

  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* Hero */
.hero { padding: 72px 24px 44px; border-bottom: 1px solid var(--border); background: var(--bg-tint); }
.hero__inner, .container { width: min(1120px, 100%); margin: 0 auto; }
.eyebrow {
  color: var(--accent);
  letter-spacing: .14em;
  text-transform: uppercase;
  font-size: .8rem;
  font-weight: 600;
  font-family: var(--font-display);
}
h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 8vw, 5.5rem);
  letter-spacing: -.04em;
  line-height: 1.02;
  color: var(--text);
}
h2 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text);
}
.lead { max-width: 700px; margin: 14px 0 0; color: var(--text-muted); font-size: 1.2rem; line-height: 1.7; }
.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.links a {
  padding: 10px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.links a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); text-decoration: none; }

/* Layout */
.container { padding: 40px 24px 72px; }
.toolbar { display: grid; grid-template-columns: 1fr 240px; gap: 16px; margin-bottom: 40px; }
label span {
  display: block;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: .9rem;
  font-family: var(--font-display);
  letter-spacing: .02em;
}
input, select {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-body);
  font-size: .95rem;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
input::placeholder { color: var(--text-dim); }
input:hover, select:hover { border-color: var(--text-dim); }

.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.count { color: var(--text-muted); font-family: var(--font-display); }

/* Grid + Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 18px 0 52px;
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 22px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 4px 12px rgba(15, 23, 42, .05);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 8px rgba(15, 23, 42, .06), 0 12px 28px rgba(37, 99, 235, .12);
}
.card h3 { margin: 12px 0 6px; font-family: var(--font-display); font-weight: 600; letter-spacing: -.01em; color: var(--text); }
.card p { margin: 6px 0; color: var(--text); }
.card a { font-weight: 500; }

.meta, .tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags { margin-top: 12px; }
.badge {
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--text-muted);
  font-size: .76rem;
  font-family: var(--font-display);
  letter-spacing: .02em;
}
.badge--version {
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
}
.required {
  background: var(--danger-soft);
  color: var(--danger);
}
.muted { color: var(--text-muted); font-size: .88rem; }

code, .muted code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--code-text);
  font-size: .82rem;
}
.command {
  overflow-x: auto;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--code-bg);
  color: var(--code-text);
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.6;
}
.command code { background: none; padding: 0; color: inherit; }

.empty {
  padding: 28px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  color: var(--text-dim);
  text-align: center;
}

/* Accessibility — keyboard focus only (per html-tailwind guidelines) */
a:focus-visible,
.links a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}
input:focus-visible,
select:focus-visible {
  border-color: var(--accent);
}

/* Accessibility — respect reduced-motion (per ux-guidelines) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* Responsive */
@media (max-width: 700px) {
  .toolbar { grid-template-columns: 1fr; }
}