/* ============================================================
   base.css · Reset, variables globales y tipografía
   ============================================================ */

:root {
  color-scheme: light;

  /* Colores */
  --bg: #ffffff;
  --ink: #111111;
  --ink-soft: #595959;
  --ink-faint: #8a8a8a;
  --line: #e2e2e2;
  --panel: #f6f6f6;
  --invert-bg: #111111;
  --invert-ink: #f5f5f5;
  --code-border: transparent;

  /* Radios */
  --radius: 10px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  /* Transiciones */
  --speed: .15s;

  /* Tipografía */
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
}

/* ====== Modo oscuro ======
   Paleta oscura compartida. Se aplica cuando el usuario lo elige
   (data-theme="dark") o cuando su sistema está en oscuro y no eligió
   claro a mano (prefers-color-scheme + :not([data-theme="light"])). */
:root[data-theme="dark"],
:root[data-theme="dark"] body {
  color-scheme: dark;
  --bg: #0f0f0f;
  --ink: #ededed;
  --ink-soft: #a3a3a3;
  --ink-faint: #6e6e6e;
  --line: #2a2a2a;
  --panel: #1a1a1a;
  --invert-bg: #1d1d1d;
  --invert-ink: #ededed;
  --code-border: #2f2f2f;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0f0f0f;
    --ink: #ededed;
    --ink-soft: #a3a3a3;
    --ink-faint: #6e6e6e;
    --line: #2a2a2a;
    --panel: #1a1a1a;
    --invert-bg: #1d1d1d;
    --invert-ink: #ededed;
    --code-border: #2f2f2f;
  }
}

* { box-sizing: border-box; margin: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--speed), color var(--speed);
}

.wrap { width: 100%; max-width: 720px; margin: 0 auto; padding: 0 20px; }

main { padding-bottom: 64px; }

.hidden { display: none !important; }