/* base.css — reset, tokens, layout primitives */

:root {
  /* Paleta */
  --cream: #F2EDE4;
  --ink: #1A1A1A;
  --bone: #E8E1D4;

  /* Derivados sutiles */
  --ink-60: rgba(26, 26, 26, 0.6);
  --ink-30: rgba(26, 26, 26, 0.3);
  --ink-12: rgba(26, 26, 26, 0.12);
  --ink-08: rgba(26, 26, 26, 0.08);

  /* Tipografía */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-text: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  /* Espaciado (escala de 8) */
  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.5rem;
  --s-4: 2rem;
  --s-5: 3rem;
  --s-6: 4rem;
  --s-7: 6rem;
  --s-8: 8rem;
  --s-9: 12rem;

  /* Layout */
  --max: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  /* Animación */
  --t: 200ms cubic-bezier(0.2, 0.6, 0.2, 1);
  --t-slow: 400ms cubic-bezier(0.2, 0.6, 0.2, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.6;
  font-feature-settings: 'kern' 1, 'liga' 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

img,
picture,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity var(--t), color var(--t);
}

a:hover {
  opacity: 0.6;
}

button {
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.container--narrow {
  max-width: 880px;
}

/* Section spacing */
.section {
  padding-top: var(--s-8);
  padding-bottom: var(--s-8);
}

.section--lg {
  padding-top: var(--s-9);
  padding-bottom: var(--s-9);
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--s-6);
    padding-bottom: var(--s-6);
  }

  .section--lg {
    padding-top: var(--s-7);
    padding-bottom: var(--s-7);
  }
}

/* Divisor sutil */
.rule {
  border: 0;
  border-top: 1px solid var(--ink-12);
  margin: 0;
}

/* Reveal en scroll (fade-in) */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* Selection */
::selection {
  background: var(--ink);
  color: var(--cream);
}

/* Skip link accesibilidad */
.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--s-2);
  z-index: 100;
  background: var(--ink);
  color: var(--cream);
  padding: var(--s-1) var(--s-2);
  font-size: 0.875rem;
}

.skip-link:focus {
  left: var(--s-2);
}