/* Sistema de diseño dual (Brisa Nórdica / Noche Apacible), retícula Bento y legibilidad (Regla 7.4) */
:root {
  --bg-page: #F4F7FB;
  --bg-surface: #FFFFFF;
  --bg-elevated: #EAF0F7;
  --bg-accent-soft: #E0F2FE;
  --bg-emerald-soft: #DCFCE7;
  --bg-amber-soft: #FEF3C7;
  --bg-rose-soft: #FFE4E6;
  --text-primary: #1E293B;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --accent-primary: #0F766E;
  --accent-primary-hover: #115E59;
  --accent-secondary: #1D4ED8;
  --accent-amber: #B45309;
  --accent-rose: #BE123C;
  --border-subtle: #CBD5E1;
  --border-strong: #94A3B8;
  --shadow-card: 0 4px 14px rgba(15, 23, 42, 0.06);
  --code-bg: #0F172A;
  --code-text: #E2E8F0;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "Cascadia Code", Consolas, "Courier New", monospace;
}

html[data-theme="oscuro"] {
  --bg-page: #141923;
  --bg-surface: #1D2432;
  --bg-elevated: #262F42;
  --bg-accent-soft: rgba(56, 189, 248, 0.14);
  --bg-emerald-soft: rgba(52, 211, 153, 0.15);
  --bg-amber-soft: rgba(251, 191, 36, 0.15);
  --bg-rose-soft: rgba(251, 113, 133, 0.16);
  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --accent-primary: #34D399;
  --accent-primary-hover: #10B981;
  --accent-secondary: #38BDF8;
  --accent-amber: #FBBF24;
  --accent-rose: #FB7185;
  --border-subtle: #334155;
  --border-strong: #475569;
  --shadow-card: 0 8px 24px rgba(2, 6, 23, 0.35);
  --code-bg: #0B0F19;
  --code-text: #E2E8F0;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.65;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-page);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  background: var(--accent-primary);
  color: #FFFFFF;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  z-index: 100;
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  top: 0.75rem;
}

.page-shell {
  width: 100%;
  max-width: 100%;
  margin-inline: auto;
  padding: 1.5rem clamp(1rem, 3vw, 2.5rem) 3.5rem;
  flex: 1;
}

/* Regla 7.4: Ancho y legibilidad de prosa sin recortes ni topes arbitrarios */
p, li, dd, blockquote, .prose-copy {
  inline-size: 100%;
  max-inline-size: 100%;
  min-inline-size: 0;
  white-space: normal;
  word-break: normal;
  overflow-wrap: break-word;
  hyphens: none;
}

h1, h2, h3, h4 {
  color: var(--text-primary);
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: clamp(1.65rem, 2.6vw, 2.35rem); font-weight: 800; }
h2 { font-size: clamp(1.3rem, 2vw, 1.75rem); font-weight: 700; }
h3 { font-size: clamp(1.08rem, 1.4vw, 1.28rem); font-weight: 700; }

.bento-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: 1.25rem;
}

.bento-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1.15rem;
}

.bento-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 1rem;
}

.master-detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 64rem) {
  .master-detail-layout {
    grid-template-columns: 23rem minmax(0, 1fr);
  }
}

.stack-lg > * + * { margin-top: 1.75rem; }
.stack-md > * + * { margin-top: 1.1rem; }
.stack-sm > * + * { margin-top: 0.65rem; }

.flex-row-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.flex-between {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
}

.hidden {
  display: none !important;
}

@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;
  }
}