/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Colors */
  --bg:           #F4F3EF;
  --surface:      #FFFFFF;
  --surface-2:    #EDEBE4;
  --border:       rgba(26, 26, 23, 0.13);
  --border-hover: rgba(26, 26, 23, 0.28);

  --text-primary:   #1A1A17;
  --text-secondary: #56554D;
  --text-muted:     #75746B;

  --accent:         #1A1A17;   /* negro tinta — acento neutro */
  --accent-dim:     rgba(26, 26, 23, 0.06);
  --accent-glow:    rgba(26, 26, 23, 0.14);

  /* Typography */
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-gap: 7rem;
  --container:   1280px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 250ms;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

@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;
  }
}

/* =============================================
   UTILIDADES COMPARTIDAS
   ============================================= */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}

.accent {
  color: var(--accent);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  background: var(--surface);
  transition: border-color var(--duration) var(--ease),
              color var(--duration) var(--ease);
}

.tag:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(26, 26, 23, 0.2); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Selection */
::selection {
  background: var(--accent-dim);
  color: var(--accent);
}

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}