/* Global theme + reset. CSS custom properties defined on :root inherit through
   Shadow DOM boundaries, so every Lit component can reference them via var(). */

:root {
  /* ---- Ocean theme (light) ---- */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-secondary: #0ea5e9;
  --color-accent: #06b6d4;

  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f1f5f9;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-border: #e2e8f0;

  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;

  --color-sidebar-bg: #ffffff;
  --color-sidebar-heading: #0f172a;
  --color-sidebar-text: #475569;
  --color-sidebar-hover: #f1f5f9;
  --color-sidebar-active: #2563eb;
  --color-sidebar-active-text: #ffffff;
  --color-sidebar-border: #e2e8f0;

  /* ---- spacing / radius / typography ---- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.16);
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --header-height: 60px;
  --sidebar-width: 248px;
  --sidebar-width-collapsed: 64px;
}

:root[data-theme="dark"] {
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-secondary: #38bdf8;
  --color-accent: #22d3ee;

  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-border: #334155;

  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  --color-sidebar-bg: #020617;
  --color-sidebar-heading: #ffffff;
  --color-sidebar-text: #cbd5e1;
  --color-sidebar-hover: rgba(255, 255, 255, 0.06);
  --color-sidebar-active: #3b82f6;
  --color-sidebar-active-text: #ffffff;
  --color-sidebar-border: rgba(255, 255, 255, 0.08);

  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.55);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

a {
  color: var(--color-primary);
}