/* =========================================================
   BASE — Tokens de diseño
   Paleta: "Cuaderno de matemático"
   ========================================================= */

:root {
  /* Color */
  --color-paper: #F7F5F0;
  --color-paper-alt: #F1EEE6;
  --color-ink: #1C1B1A;
  --color-ink-soft: #3A3835;
  --color-blue: #2B4C7E;
  --color-blue-dim: #2B4C7E26;
  --color-red: #B23A23;
  --color-red-dim: #B23A2322;
  --color-stone: #8A8578;
  --color-stone-line: #8A858533;
  --color-amber: #9C6F2A;
  --color-amber-dim: #9C6F2A22;
  --color-teal: #3E7C6F;
  --color-teal-dim: #3E7C6F22;
  --color-violet: #6B5B95;
  --color-violet-dim: #6B5B9522;
  --color-pink: #B5567A;
  --color-pink-dim: #B5567A22;
  --color-slate: #4A5A6B;
  --color-slate-dim: #4A5A6B22;
  --color-green: #4C7A3E;
  --color-green-dim: #4C7A3E22;
  --color-orange: #C2611E;
  --color-orange-dim: #C2611E22;
  --color-skyblue: #3E6FA0;
  --color-skyblue-dim: #3E6FA022;
  --color-coral: #B8503A;
  --color-coral-dim: #B8503A22;
  --color-olive: #7A7A1E;
  --color-olive-dim: #7A7A1E22;
  --color-gold: #A67A0E;
  --color-gold-dim: #A67A0E22;
  --color-indigo: #4A3F8C;
  --color-indigo-dim: #4A3F8C22;

  /* Portada oscura — técnico/terminal */
  --color-dark: #0E1116;
  --color-dark-raised: #161B22;
  --color-dark-text: #E8E6E1;
  --color-dark-text-soft: #B7B4AC;
  --color-cyan: #4FE0C5;
  --color-cyan-dim: #4FE0C52A;
  /* Variante legible sobre fondo claro ("cuaderno") — el cian de arriba está
     calibrado para --color-dark (casi negro) y da ~1.5:1 de contraste sobre
     --color-paper, ilegible como acento/borde en zona clara (equipo-admin.html,
     familia de gobierno). Mismo tono, más oscuro y saturado, solo para eso. */
  --color-cyan-ink: #0F7A82;
  --color-cyan-ink-dim: #0F7A8222;
  --color-dark-line: #4FE0C526;

  /* Tipografía */
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  /* Escala tipográfica */
  --fs-hero: clamp(2.6rem, 6vw, 5rem);
  --fs-h2: clamp(1.8rem, 3.4vw, 2.6rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-body: 1.125rem;
  --fs-small: 0.9rem;
  --fs-mono: 0.85rem;

  /* Espaciado */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  /* Layout */
  --content-max: 1080px;
  --margin-rule: 1px;
}

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

[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
  color: var(--color-ink);
}

p {
  margin: 0 0 var(--space-sm) 0;
  max-width: 38em;
}

a {
  color: var(--color-blue);
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.02em;
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (max-width: 640px) {
  .container {
    padding: 0 var(--space-sm);
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}