/* ─────────────────────────────────────────────────────────────
   PCHub - Aesthetic Design System (Neo-Soft + Glassmorphism)
   Base: dark mode elegante con acentos vibrantes
   ───────────────────────────────────────────────────────────── */

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

:root {
  --bg: #05050A;
  --bg2: #0A0A14;
  --bg3: #11111F;
  --bg-glass: rgba(10, 10, 20, 0.65);
  --bg-card: rgba(17, 17, 31, 0.7);

  --accent-primary: #3DBFEF;
  --accent-primary-glow: rgba(61, 191, 239, 0.25);
  --accent-secondary: #A855F7;
  --accent-tertiary: #F43F5E;
  --accent-gradient: linear-gradient(135deg, #3DBFEF 0%, #A855F7 100%);

  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-medium: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(61, 191, 239, 0.3);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(61, 191, 239, 0.15);
  --shadow-card: 0 20px 35px -12px rgba(0, 0, 0, 0.4);

  --nav-h: 64px;
  --container-max: 720px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 24px;

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 2rem);
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--accent-primary); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-secondary); }

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* ── NAV ───────────────────────────────────────────────────── */
.page-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 300;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.75rem;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.page-nav-back {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.85rem; font-weight: 500;
  transition: all var(--transition-base);
  padding: 0.4rem 0.8rem; border-radius: 40px;
}
.page-nav-back:hover {
  color: var(--accent-primary);
  background: rgba(61, 191, 239, 0.1);
  transform: translateX(-2px);
}

.page-nav-logo {
  font-size: 1.2rem; font-weight: 800; text-decoration: none;
  letter-spacing: -0.5px; transition: opacity var(--transition-fast);
}
.page-nav-logo:hover { opacity: 0.85; }
.page-nav-logo .pc { color: var(--accent-secondary); }
.page-nav-logo .hub { color: var(--accent-primary); }

/* ── MAIN ──────────────────────────────────────────────────── */
.page-wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 3rem) 1.5rem 5rem;
}

/* ── TIPOGRAFÍA ────────────────────────────────────────────── */
.page-tag {
  font-size: 0.7rem; font-weight: 600; letter-spacing: 3px;
  text-transform: uppercase;
  background: var(--accent-gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 0.75rem; display: inline-block;
}

.page-title {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  font-weight: 700; letter-spacing: -0.02em; line-height: 1.2;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #FFFFFF 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.page-updated {
  font-size: 0.75rem; color: var(--text-muted); margin-bottom: 2rem;
  display: flex; align-items: center; gap: 0.5rem;
}

.page-wrap h3 {
  font-size: 1.1rem; font-weight: 600; color: var(--text-primary);
  margin: 2rem 0 0.75rem;
  padding-left: 0.75rem;
  border-left: 3px solid var(--accent-primary);
}

.page-wrap p {
  font-size: 0.95rem; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 1rem;
}

.page-wrap ul,
.page-wrap ol { margin: 0.75rem 0 1rem 1.5rem; }

.page-wrap li {
  font-size: 0.93rem; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 0.4rem;
}
.page-wrap li::marker { color: var(--accent-primary); }

.page-wrap a {
  color: var(--accent-primary); text-decoration: none;
  font-weight: 500; transition: all var(--transition-fast);
  border-bottom: 1px dotted transparent;
}
.page-wrap a:hover {
  color: var(--accent-secondary);
  border-bottom-color: var(--accent-secondary);
}

/* ── BOXES ─────────────────────────────────────────────────── */
.highlight-box {
  background: var(--bg-card);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-medium);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--border-radius-md);
  padding: 1.2rem 1.4rem; margin: 1.5rem 0;
  transition: all var(--transition-base);
}
.highlight-box:hover {
  transform: translateX(4px);
  border-left-width: 5px;
  box-shadow: var(--shadow-glow);
}

.alert-box {
  background: rgba(244, 63, 94, 0.08);
  border: 1px solid rgba(244, 63, 94, 0.25);
  border-radius: var(--border-radius-md);
  padding: 1rem 1.25rem; margin: 1.5rem 0;
}
.alert-box p { margin-bottom: 0; color: var(--text-primary); }

/* ── CARDS GRID ────────────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem; margin: 1.75rem 0;
}

.info-card {
  background: var(--bg-card);
  backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem;
  transition: all var(--transition-base);
  cursor: default;
}
.info-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-card);
}

.info-card h4 {
  font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem;
  color: var(--text-primary);
}
.info-card p {
  font-size: 0.85rem; color: var(--text-secondary);
  margin-bottom: 0; line-height: 1.55;
}

/* ── TABLAS ────────────────────────────────────────────────── */
.info-table {
  width: 100%; border-collapse: collapse;
  margin: 1.5rem 0;
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.info-table th,
.info-table td {
  text-align: left; padding: 0.85rem 1rem;
  font-size: 0.88rem; border-bottom: 1px solid var(--border-subtle);
}

.info-table th {
  background: rgba(61, 191, 239, 0.08);
  color: var(--accent-primary); font-weight: 600;
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.info-table td { color: var(--text-secondary); }
.info-table tr:hover td { background: rgba(61, 191, 239, 0.03); }

/* ── SEPARADOR ─────────────────────────────────────────────── */
.page-divider {
  border: none; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-medium), transparent);
  margin: 2.5rem 0;
}

/* ── PLACEHOLDER ───────────────────────────────────────────── */
.placeholder-notice {
  display: inline-block;
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(61, 191, 239, 0.08));
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 40px; padding: 0.2rem 0.75rem;
  font-size: 0.7rem; font-weight: 500;
  color: var(--accent-secondary); letter-spacing: -0.2px;
}

/* ── FOOTER ────────────────────────────────────────────────── */
.page-footer {
  margin-top: 5rem; padding: 1.75rem 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex; flex-wrap: wrap; gap: 1.5rem;
  align-items: center; justify-content: space-between;
  background: linear-gradient(180deg, transparent, rgba(61, 191, 239, 0.02));
}

.page-footer-links { display: flex; flex-wrap: wrap; gap: 1.25rem; }

.page-footer-links a {
  color: var(--text-muted); font-size: 0.75rem; text-decoration: none;
  transition: all var(--transition-fast);
}
.page-footer-links a:hover { color: var(--accent-primary); transform: translateY(-1px); }

.page-footer p { color: var(--text-muted); font-size: 0.75rem; }

/* ── BOTONES ───────────────────────────────────────────────── */
.btn-primary-small {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: var(--accent-gradient);
  padding: 0.6rem 1.25rem; border-radius: 40px;
  color: white; font-weight: 600; font-size: 0.85rem;
  text-decoration: none; transition: all var(--transition-base);
  border: none; cursor: pointer;
}
.btn-primary-small:hover {
  transform: scale(1.02);
  box-shadow: 0 4px 12px var(--accent-primary-glow);
}

/* ── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --nav-h: 56px; }

  .page-nav { padding: 0 1rem; }
  .page-wrap { padding: calc(var(--nav-h) + 2rem) 1.25rem 4rem; }
  .page-footer { flex-direction: column; text-align: center; }
  .page-footer-links { justify-content: center; }
  .cards-grid { grid-template-columns: 1fr; gap: 0.85rem; }

  .info-table th,
  .info-table td { padding: 0.6rem 0.75rem; font-size: 0.8rem; }
}

/* ── ANIMACIONES DE ENTRADA ────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.page-wrap > * {
  animation: fadeInUp 0.4s ease forwards;
}

.page-wrap > *:nth-child(1) { animation-delay: 0s; }
.page-wrap > *:nth-child(2) { animation-delay: 0.05s; }
.page-wrap > *:nth-child(3) { animation-delay: 0.1s; }
.page-wrap > *:nth-child(4) { animation-delay: 0.15s; }
.page-wrap > *:nth-child(5) { animation-delay: 0.2s; }

@media (prefers-reduced-motion: reduce) {
  .page-wrap > * { animation: none; }
  .highlight-box,
  .info-card,
  .page-nav-back,
  .page-footer-links a { transition: none; }
}