/* base.css — design tokens, reset, typography */
:root {
  --primary: #111827;
  --secondary: #2563EB;
  --accent: #06B6D4;
  --glass-blue: #E0F7FA;
  --success: #16A34A;
  --warning: #F59E0B;
  --danger: #DC2626;
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --border: #E5E7EB;
  --text: #111827;
  --muted: #6B7280;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  --shadow-md: 0 4px 12px rgba(16,24,40,.08);
  --shadow-lg: 0 12px 32px rgba(16,24,40,.14);
  --sidebar-w: 248px;
  --topbar-h: 60px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: var(--text); }
h1 { font-size: 24px; }
h2 { font-size: 19px; }
h3 { font-size: 16px; }
h4 { font-size: 14px; }
a { color: var(--secondary); text-decoration: none; }
a:hover { text-decoration: underline; }
small { font-size: 12px; }
.muted { color: var(--muted); }
.text-center { text-align: center; }
.mono { font-family: "SFMono-Regular", Consolas, monospace; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }

/* utility spacing */
.row { display: flex; gap: 12px; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.row.center { align-items: center; }
.col { display: flex; flex-direction: column; gap: 12px; }
.grow { flex: 1; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }
.hidden { display: none !important; }