:root {
  --bg: #07162d;
  --bg-soft: #0c2345;
  --bg-card: rgba(10, 24, 54, 0.82);
  --paper: #eef3ff;
  --text: #12213d;
  --muted: #5f6d87;
  --line: rgba(255,255,255,0.08);
  --line-dark: rgba(18,33,61,0.08);
  --primary: #34d7ff;
  --primary-2: #24f2c5;
  --secondary: #8c6cff;
  --accent: #f8b44c;
  --success: #19c37d;
  --danger: #ff6c8b;
  --shadow: 0 18px 40px rgba(2, 10, 28, 0.18);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max: 1220px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(76, 142, 255, 0.2), transparent 25%),
    radial-gradient(circle at top left, rgba(140,108,255,0.16), transparent 22%),
    linear-gradient(180deg, #06152c 0%, #0c1f3b 18%, #f6f8ff 18%, #f8fbff 100%);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(calc(100% - 2rem), var(--max)); margin: 0 auto; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(6, 21, 44, 0.72);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}
.brand { display:flex; align-items:center; gap:.9rem; color: #fff; font-weight: 800; letter-spacing: -.03em; }
.brand-mark {
  width: 52px; height: 52px; border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #04203e; display:grid; place-items:center; font-size:1.7rem; box-shadow: 0 10px 24px rgba(36,242,197,0.24);
}
.brand small { display:block; font-size:.74rem; font-weight:600; opacity:.75; }
.nav-links { display:flex; gap:1rem; flex-wrap:wrap; }
.nav-links a {
  color: rgba(255,255,255,.78); padding:.72rem .92rem; border-radius:999px; font-weight:600; font-size:.96rem;
}
.nav-links a.active, .nav-links a:hover { color:#fff; background: rgba(255,255,255,0.08); }
.nav-actions { display:flex; align-items:center; gap:.75rem; }
.mobile-toggle { display:none; background:transparent; border:none; color:#fff; font-size:1.6rem; }
.hero {
  padding: 3rem 0 2.5rem;
  color: #fff;
}
.hero-grid { display:grid; grid-template-columns: 1.1fr .9fr; gap: 1.3rem; align-items: center; }
.glass, .hero-card {
  background: linear-gradient(180deg, rgba(16,34,72,.82), rgba(10,24,54,.88));
  border: 1px solid rgba(255,255,255,.1);
  box-shadow: 0 16px 40px rgba(5,11,26,.3);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-xl);
}
.hero-copy { padding: 2rem; }
.eyebrow {
  display:inline-flex; align-items:center; gap:.5rem; padding:.45rem .8rem; border-radius:999px; background: rgba(52,215,255,0.12); color: var(--primary-2); font-size: .85rem; font-weight:700; margin-bottom:1rem;
}
.hero h1 { font-size: clamp(2.2rem, 4vw, 4.4rem); line-height: 1.02; margin:.2rem 0 1rem; letter-spacing:-.05em; }
.hero p.lead { font-size: 1.05rem; line-height:1.7; color: rgba(255,255,255,.82); }
.highlight { color: var(--primary-2); }
.hero-actions, .toolbar { display:flex; gap:.8rem; flex-wrap:wrap; margin-top:1.25rem; }
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:.55rem; border:none; border-radius: 14px; padding:.92rem 1.2rem; font-weight:700; cursor:pointer; transition:.18s ease; font-size: .98rem;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--primary-2), var(--primary)); color:#072446; }
.btn-secondary { background: rgba(255,255,255,.08); color:#fff; border:1px solid rgba(255,255,255,.12); }
.btn-outline { background: transparent; color:#fff; border:1px solid rgba(255,255,255,.18); }
.btn-light { background:#fff; color: var(--text); border:1px solid var(--line-dark); }
.btn-danger { background: linear-gradient(135deg, #ff86a0, #ff6c8b); color:#fff; }
.hero-visual { padding: 1rem; overflow:hidden; }
.hero-visual img { width:100%; border-radius: 20px; }
.metric-grid { display:grid; grid-template-columns: repeat(4,1fr); gap: .75rem; margin-top: 1.3rem; }
.metric {
  padding: 1rem; border-radius: 18px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
}
.metric strong { display:block; font-size:1.5rem; color:#fff; }
.metric span { color: rgba(255,255,255,.74); font-size: .9rem; }
.section { padding: 2.5rem 0; }
.section h2, .section h1 { margin:0 0 .8rem; font-size: clamp(1.7rem, 2.4vw, 2.6rem); letter-spacing:-.04em; }
.section-intro { color: var(--muted); line-height:1.75; max-width: 880px; }
.light { background: transparent; }
.card-grid { display:grid; grid-template-columns: repeat(4,1fr); gap: 1rem; margin-top:1.25rem; }
.card, .panel-card, .feature-card, .table-card, .stat-card, .module-card, .resource-card, .forum-card, .form-card, .timeline-card, .download-card, .tab-pane {
  background:#fff; border:1px solid rgba(18,33,61,.08); border-radius: var(--radius-lg); box-shadow: var(--shadow);
}
.card, .panel-card, .feature-card, .table-card, .form-card, .timeline-card { padding: 1.25rem; }
.dark-card {
  background: linear-gradient(180deg, rgba(12, 35, 69, 0.98), rgba(8, 24, 53, 0.98));
  color:#fff;
  border:1px solid rgba(255,255,255,.08);
}
.dark-card .section-intro, .dark-card p, .dark-card li { color: rgba(255,255,255,.74); }
.icon-badge {
  width: 48px; height: 48px; border-radius: 14px; display:grid; place-items:center; background: linear-gradient(135deg, rgba(140,108,255,.16), rgba(52,215,255,.16)); color: var(--secondary); font-size:1.35rem; margin-bottom: .95rem;
}
.route-grid, .alignment-grid, .dashboard-panels, .grid-3, .grid-2, .theory-grid, .resource-grid, .forum-grid, .analytics-grid, .stats-grid, .download-grid {
  display:grid; gap: 1rem;
}
.route-grid { grid-template-columns: repeat(3, 1fr); margin-top: 1.2rem; }
.alignment-grid { grid-template-columns: repeat(3, 1fr); margin-top: 1.2rem; }
.grid-3, .theory-grid, .resource-grid { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.dashboard-panels { grid-template-columns: repeat(3, 1fr); }
.stats-grid { grid-template-columns: repeat(4,1fr); }
.analytics-grid { grid-template-columns: 1.2fr .8fr; }
.download-grid { grid-template-columns: repeat(3,1fr); }
.module-card { padding: 1.15rem; position: relative; overflow:hidden; }
.module-card h3 { margin: .2rem 0 .7rem; font-size:1.1rem; }
.module-number {
  position:absolute; top:1rem; right:1rem; width: 36px; height:36px; border-radius: 50%; background: linear-gradient(135deg, var(--secondary), var(--primary)); color:#fff; font-weight:800; display:grid; place-items:center;
}
.list-clean { list-style:none; padding:0; margin:0; display:grid; gap:.75rem; }
.list-clean li { line-height:1.6; }
.pill-list, .tag-list, .chip-row { display:flex; flex-wrap:wrap; gap:.6rem; }
.pill, .tag, .chip {
  display:inline-flex; align-items:center; gap:.35rem; padding:.5rem .78rem; border-radius:999px; background:#eef4ff; color:#35507c; font-weight:600; font-size:.88rem; border:1px solid rgba(53,80,124,.12);
}
.dark-card .pill, .dark-card .tag, .dark-card .chip { background: rgba(255,255,255,.08); color:#fff; border-color: rgba(255,255,255,.08); }
.two-col { display:grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.steps { display:grid; grid-template-columns: repeat(5,1fr); gap: .8rem; }
.step { padding: 1rem; border-radius:18px; background: rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.08); }
.community-band { display:grid; grid-template-columns: .9fr 1.1fr; overflow:hidden; }
.community-band img { height:100%; object-fit: cover; }
.footer { background:#07162d; color:#fff; padding: 2rem 0; margin-top: 2rem; }
.footer-grid { display:grid; grid-template-columns: 1.4fr repeat(3,.8fr); gap: 1rem; align-items:flex-start; }
.footer ul { list-style:none; padding:0; margin:.8rem 0 0; display:grid; gap:.5rem; }
.footer a { color: rgba(255,255,255,.82); }
.searchbar, .input, .select, textarea, input[type="text"], input[type="email"], input[type="date"], input[type="number"], input[type="search"], select {
  width:100%; border-radius:14px; border:1px solid rgba(18,33,61,.12); padding:.92rem 1rem; font: inherit; color: var(--text); background:#fff; outline:none;
}
textarea { min-height: 120px; resize: vertical; }
label { display:grid; gap:.42rem; font-weight:700; font-size:.96rem; color: var(--text); }
.field-grid { display:grid; grid-template-columns: repeat(2,1fr); gap: .9rem; }
.form-card form { display:grid; gap: .95rem; }
.help-text { font-size: .84rem; color: var(--muted); line-height:1.6; }
.notice {
  border-radius: 14px; padding: .9rem 1rem; font-weight: 600; display:none; align-items:center; gap:.6rem;
}
.notice.show { display:flex; }
.notice.success { background: rgba(25,195,125,.12); color: #127949; border:1px solid rgba(25,195,125,.16); }
.notice.error { background: rgba(255,108,139,.12); color: #a42043; border:1px solid rgba(255,108,139,.16); }
.page-shell { padding: 1rem; }
.dashboard-grid { display:grid; grid-template-columns: 260px 1fr 310px; gap:1rem; }
.sidebar {
  padding:1rem; border-radius: 24px; background: linear-gradient(180deg, rgba(7,22,45,.98), rgba(8,28,57,.98)); color:#fff; min-height: calc(100vh - 5rem); position: sticky; top: 92px;
}
.sidebar-nav, .side-menu { display:grid; gap:.45rem; margin-top:1rem; }
.sidebar-nav a, .side-menu a {
  color: rgba(255,255,255,.82); padding:.85rem .9rem; border-radius: 14px; font-weight:600;
}
.sidebar-nav a.active, .sidebar-nav a:hover, .side-menu a.active, .side-menu a:hover { background: rgba(52,215,255,.16); color:#fff; }
.dashboard-main, .dashboard-side { min-width:0; }
.progress-card { display:grid; grid-template-columns: 1fr 280px; gap: 1rem; align-items:center; }
.progress-bar {
  height: 14px; background: rgba(255,255,255,.08); border-radius: 999px; overflow:hidden; margin:.8rem 0;
}
.progress-bar span { display:block; height:100%; background: linear-gradient(90deg, var(--primary-2), var(--primary)); border-radius:999px; }
.timeline-mini, .timeline-vertical { display:grid; gap:.7rem; }
.timeline-item {
  display:grid; grid-template-columns: 44px 1fr auto; gap:.8rem; align-items:center; padding: .95rem 1rem; border-radius: 18px; border:1px solid rgba(18,33,61,.08); background:#fff;
}
.timeline-item.is-active { border-color: rgba(52,215,255,.4); box-shadow: 0 10px 24px rgba(52,215,255,.12); }
.timeline-item .bubble {
  width:44px; height:44px; border-radius: 14px; display:grid; place-items:center; font-weight:800; color:#fff; background: linear-gradient(135deg, var(--secondary), var(--primary));
}
.timeline-item small { color: var(--muted); display:block; margin-top:.15rem; }
.status-pill { padding:.45rem .72rem; border-radius:999px; font-size:.82rem; font-weight:800; }
.status-completado { background: rgba(25,195,125,.14); color:#0f8d58; }
.status-en-curso { background: rgba(52,215,255,.16); color:#0e88ab; }
.status-pendiente { background: rgba(140,108,255,.16); color:#6847dc; }
.badges-row { display:grid; grid-template-columns: repeat(4,1fr); gap:1rem; }
.badge-card { padding:1rem; border-radius:18px; background: linear-gradient(180deg, rgba(10,24,54,.96), rgba(7,21,44,.98)); color:#fff; }
.resource-card { padding:1.2rem; display:grid; gap:.75rem; }
.resource-meta { display:flex; gap:.45rem; flex-wrap:wrap; }
.filter-bar { display:grid; grid-template-columns: 1.2fr repeat(3, .7fr); gap:.8rem; margin: 1rem 0 1.2rem; }
.forum-card { padding:1.2rem; display:grid; gap:.6rem; }
.kpi { padding:1rem; border-radius:20px; background:#fff; box-shadow:var(--shadow); }
.kpi strong { display:block; font-size:1.8rem; margin-bottom:.25rem; }
.hero-split { display:grid; grid-template-columns: 1fr 340px; gap:1rem; align-items:stretch; }
.hero-side-card { padding:1.3rem; }
.table-card table { width:100%; border-collapse: collapse; }
.table-card th, .table-card td { padding:.85rem .75rem; border-bottom:1px solid rgba(18,33,61,.08); text-align:left; font-size:.95rem; }
.table-card th { color:#35507c; }
.chart {
  padding:1rem; border-radius:20px; background:#fff; box-shadow:var(--shadow);
}
.bar-chart { display:flex; align-items:flex-end; gap:.9rem; height: 220px; padding: 1rem .5rem .5rem; }
.bar { flex:1; background: linear-gradient(180deg, var(--primary), var(--secondary)); border-radius: 16px 16px 6px 6px; position:relative; min-width:40px; }
.bar span { position:absolute; bottom: calc(100% + .5rem); left:50%; transform: translateX(-50%); font-size:.86rem; font-weight:700; color:#35507c; }
.bar label { position:absolute; top: calc(100% + .55rem); left:50%; transform: translateX(-50%); font-size:.78rem; font-weight:700; color: var(--muted); text-align:center; width:80px; }
.tabs { display:flex; gap:.8rem; margin: 1rem 0; flex-wrap:wrap; }
.tab-btn { border:none; cursor:pointer; padding:.75rem .9rem; border-radius:999px; font:inherit; font-weight:700; background:#eaf1ff; color:#3c557f; }
.tab-btn.active { background: linear-gradient(135deg, var(--primary-2), var(--primary)); color:#072446; }
.tab-pane { display:none; }
.tab-pane.active { display:block; }
.small { font-size:.86rem; }
.muted { color: var(--muted); }
.banner-note {
  display:flex; gap:.8rem; align-items:flex-start; padding:1rem 1.1rem; background:#fff7ea; color:#754d10; border:1px solid rgba(248,180,76,.3); border-radius:18px;
}
.quote {
  padding:1rem 1.1rem; border-left:4px solid var(--secondary); background:#faf7ff; border-radius: 0 18px 18px 0; color:#513f81;
}
.split-card { display:grid; grid-template-columns: repeat(2,1fr); gap:1rem; }
.hero-mini-list { display:grid; gap:.8rem; }
.stat-card { padding: 1rem 1.1rem; }
.stat-card strong { display:block; font-size:1.8rem; }
.download-card { padding:1rem 1.1rem; }
.inline-code { padding:.15rem .35rem; border-radius:8px; background:#eef4ff; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size:.9em; }
.hidden { display:none !important; }

/* ===========================
   NUEVOS COMPONENTES
   =========================== */

/* Foto de perfil */
.profile-photo-wrap {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 0 0 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid rgba(18,33,61,.08);
  flex-wrap: wrap;
}
.profile-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: 4px solid rgba(255,255,255,.9);
  box-shadow: 0 12px 28px rgba(2,10,28,.18);
  flex-shrink: 0;
}
.profile-avatar-sm {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255,255,255,.18);
  box-shadow: 0 6px 14px rgba(2,10,28,.24);
  flex-shrink: 0;
}
.profile-photo-info { flex: 1; min-width: 200px; }
.profile-photo-info h3 { margin: 0 0 .35rem; font-size: 1.15rem; }
.profile-photo-info p { margin: 0; color: var(--muted); font-size: .92rem; line-height:1.5; }
.profile-photo-actions { display: flex; gap: .55rem; flex-wrap: wrap; margin-top: .65rem; }
.profile-photo-input { display: none; }
.btn-mini {
  display: inline-flex; align-items: center; gap:.4rem;
  padding: .55rem .85rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: .85rem;
  cursor: pointer;
  border: 1px solid var(--line-dark);
  background: #fff;
  color: var(--text);
  transition: .18s ease;
}
.btn-mini:hover { transform: translateY(-1px); border-color: var(--primary); }
.btn-mini.is-danger { color: #a42043; border-color: rgba(255,108,139,.32); }

/* Avatar en sidebar oscuro */
.sidebar-profile {
  display: flex; align-items: center; gap: .8rem;
  padding: .9rem; margin-top: 1rem;
  border-radius: 16px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
}
.sidebar-profile-info { min-width: 0; }
.sidebar-profile-info strong { display: block; color: #fff; font-size: .95rem; line-height:1.25; overflow:hidden; text-overflow:ellipsis; }
.sidebar-profile-info span { color: rgba(255,255,255,.62); font-size: .8rem; }

/* Notificaciones */
.notifications-panel {
  display: grid; gap: .65rem;
  margin: 1rem 0 0;
}
.notification-item {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: .75rem;
  align-items: center;
  padding: .85rem 1rem;
  border-radius: 14px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(52,215,255,.18);
  color: rgba(255,255,255,.92);
  font-size: .92rem;
}
.notification-item .notif-icon {
  width: 36px; height: 36px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  color: #04203e; font-size: 1rem; font-weight: 800;
}
.notification-item .notif-dismiss {
  background: transparent; border: 0; color: rgba(255,255,255,.6);
  font-size: 1.15rem; cursor: pointer; padding: .25rem .45rem; border-radius: 8px;
}
.notification-item .notif-dismiss:hover { color: #fff; background: rgba(255,255,255,.08); }

/* Búsqueda funcional en dashboard */
.search-shell { position: relative; }
.search-results {
  position: absolute; top: calc(100% + .4rem); left: 0; right: 0;
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--line-dark);
  box-shadow: 0 18px 42px rgba(2,10,28,.18);
  padding: .55rem;
  display: none;
  max-height: 360px;
  overflow-y: auto;
  z-index: 30;
}
.search-results.show { display: block; }
.search-result-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: .7rem;
  align-items: center;
  padding: .7rem .85rem;
  border-radius: 12px;
  cursor: pointer;
  text-align: left;
}
.search-result-item:hover, .search-result-item:focus { background: #eef4ff; outline: none; }
.search-result-item strong { color: var(--text); font-size: .94rem; }
.search-result-item small { color: var(--muted); font-size: .8rem; }
.search-result-item .chip { font-size: .72rem; padding: .25rem .55rem; }
.search-empty { padding: 1rem; color: var(--muted); font-size: .92rem; text-align: center; }

/* Botón volver arriba */
.back-to-top {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  width: 48px; height: 48px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  color: #04203e;
  font-size: 1.4rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 14px 32px rgba(2,10,28,.32);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .2s ease, transform .2s ease;
  z-index: 60;
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-2px); }

/* Tablas con scroll horizontal en pantallas pequeñas */
.table-scroll { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-scroll table { min-width: 480px; }

/* Indicador de auto-guardado */
.save-indicator {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .3rem .65rem;
  border-radius: 999px;
  background: rgba(25,195,125,.14);
  color: #0f8d58;
  font-size: .78rem;
  font-weight: 700;
  opacity: 0;
  transition: opacity .2s ease;
}
.save-indicator.show { opacity: 1; }

/* ===========================
   RESPONSIVE — BREAKPOINTS
   =========================== */

/* Tablet grande / laptop pequeña */
@media (max-width: 1180px) {
  .dashboard-grid { grid-template-columns: 230px 1fr; }
  .dashboard-side { display: contents; }
  .dashboard-side > * { margin-top: 1rem; }
  .hero h1 { font-size: clamp(2rem, 4vw, 3.6rem); }
  .footer-grid { grid-template-columns: 1.2fr repeat(3, 1fr); }
}

/* Tablet */
@media (max-width: 1024px) {
  .hero-grid, .hero-split, .community-band, .analytics-grid { grid-template-columns: 1fr; }
  .card-grid, .route-grid, .alignment-grid, .grid-3, .resource-grid, .forum-grid, .stats-grid, .badges-row, .download-grid, .dashboard-panels, .theory-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .progress-card { grid-template-columns: 1fr; }
  .progress-card img { max-width: 100%; }
  .dashboard-grid { grid-template-columns: 1fr; gap: .9rem; }
  .sidebar { position: static; min-height: auto; }
  .sidebar-nav, .side-menu { grid-template-columns: repeat(2, 1fr); display: grid; gap: .5rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .community-band img { max-height: 320px; width: 100%; }
}

/* Mobile grande / tablet pequeña */
@media (max-width: 820px) {
  body {
    background: linear-gradient(180deg, #06152c 0%, #0c1f3b 14%, #f6f8ff 14%, #f8fbff 100%);
  }
  .mobile-toggle {
    display: grid; place-items: center;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.08);
  }
  .nav {
    flex-wrap: nowrap;
    padding: .85rem 0;
  }
  .brand small { display: none; }
  .brand-mark { width: 44px; height: 44px; border-radius: 14px; font-size: 1.45rem; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: rgba(6,21,44,.98);
    padding: 1rem;
    gap: .35rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
    box-shadow: 0 12px 28px rgba(0,0,0,.3);
    flex-direction: column;
    flex-wrap: nowrap;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }
  .nav-links.show { display: flex; }
  .nav-links a {
    width: 100%;
    text-align: left;
    border-radius: 12px;
    padding: .85rem 1rem;
    font-size: 1rem;
  }
  .nav-actions { display: none; }
  .hero { padding: 2rem 0 1.5rem; }
  .hero-copy { padding: 1.5rem; }
  .hero h1 { font-size: clamp(1.75rem, 6vw, 2.6rem); }
  .hero p.lead { font-size: .98rem; }
  .section { padding: 1.75rem 0; }
  .card-grid, .route-grid, .alignment-grid, .grid-2, .grid-3, .theory-grid,
  .resource-grid, .forum-grid, .stats-grid, .badges-row, .download-grid,
  .dashboard-panels, .two-col, .field-grid, .split-card, .footer-grid {
    grid-template-columns: 1fr;
  }
  .metric-grid { grid-template-columns: repeat(2, 1fr); gap: .55rem; }
  .metric { padding: .8rem; }
  .metric strong { font-size: 1.3rem; }
  .filter-bar { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .timeline-item { grid-template-columns: 40px 1fr; gap: .6rem; padding: .8rem; }
  .timeline-item .status-pill { grid-column: 2; justify-self: start; margin-top: .4rem; }
  .timeline-item .bubble { width: 40px; height: 40px; }
  .sidebar-nav, .side-menu { grid-template-columns: 1fr; }
  .tabs { gap: .45rem; }
  .tab-btn { padding: .6rem .8rem; font-size: .88rem; }
  .bar-chart { height: 180px; gap: .55rem; }
  .bar { min-width: 28px; }
  .bar label { font-size: .7rem; width: 60px; }
  .progress-card img { display: none; }
  .page-shell { padding: .55rem; }
  .profile-avatar { width: 96px; height: 96px; border-width: 3px; }
  .footer { padding: 1.5rem 0; }
}

/* Mobile estándar */
@media (max-width: 640px) {
  .container { width: min(calc(100% - 1.4rem), var(--max)); }
  .hero h1 { font-size: clamp(1.6rem, 7vw, 2.2rem); letter-spacing: -.03em; }
  .hero-actions, .toolbar { flex-direction: column; align-items: stretch; }
  .hero-actions .btn, .toolbar .btn { width: 100%; }
  .glass, .hero-card, .card, .panel-card, .feature-card, .table-card, .form-card, .timeline-card { border-radius: var(--radius-md); }
  .glass { border-radius: var(--radius-lg); }
  .hero-copy { padding: 1.2rem; }
  .panel-card, .feature-card, .form-card, .table-card, .card { padding: 1rem; }
  .section h1, .section h2 { font-size: clamp(1.4rem, 5vw, 1.85rem); }
  .topbar .nav { padding: .65rem 0; }
  .filter-bar input, .filter-bar select { padding: .8rem .9rem; }
  .field-grid { gap: .7rem; }
  .field-grid label { gap: .3rem; }
  textarea, input, select { font-size: 1rem; } /* evita zoom en iOS */
  .footer-grid { gap: 1.4rem; }
  .footer ul { gap: .35rem; }
  .progress-bar { height: 11px; }
  .module-card { padding: 1rem; }
  .module-number { width: 32px; height: 32px; top: .8rem; right: .8rem; }
  .icon-badge { width: 42px; height: 42px; font-size: 1.2rem; margin-bottom: .7rem; }
  .resource-card { padding: 1rem; }
  .badge-card { padding: .85rem; }
  .stat-card { padding: .85rem; }
  .stat-card strong { font-size: 1.4rem; }
  .kpi { padding: .85rem; }
  .kpi strong { font-size: 1.45rem; }
  .quote, .banner-note { padding: .85rem 1rem; }
  .back-to-top { right: .85rem; bottom: .85rem; width: 44px; height: 44px; font-size: 1.2rem; }
  .profile-photo-wrap { gap: .9rem; }
  .profile-avatar { width: 84px; height: 84px; }
  .sidebar-profile { padding: .7rem; gap: .65rem; }
  .profile-avatar-sm { width: 48px; height: 48px; }
  .notification-item { grid-template-columns: 32px 1fr auto; padding: .7rem .85rem; font-size: .88rem; }
  .notification-item .notif-icon { width: 32px; height: 32px; font-size: .9rem; }
}

/* Mobile chico */
@media (max-width: 420px) {
  .container { width: min(calc(100% - 1.1rem), var(--max)); }
  .nav { padding: .55rem 0; }
  .brand { gap: .55rem; font-size: .98rem; }
  .brand-mark { width: 38px; height: 38px; border-radius: 11px; font-size: 1.2rem; }
  .hero { padding: 1.4rem 0 1rem; }
  .hero-copy { padding: 1rem; }
  .hero h1 { font-size: clamp(1.45rem, 8vw, 2rem); }
  .hero p.lead { font-size: .94rem; line-height: 1.6; }
  .eyebrow { font-size: .75rem; padding: .35rem .65rem; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric strong { font-size: 1.4rem; }
  .pill, .tag, .chip { font-size: .8rem; padding: .4rem .65rem; }
  .btn { padding: .85rem 1rem; font-size: .94rem; }
  .panel-card, .form-card, .feature-card, .card { padding: .9rem; }
  .progress-card { padding: .9rem; }
  .bar-chart { height: 150px; padding: .8rem .35rem .35rem; gap: .35rem; }
  .bar { min-width: 22px; border-radius: 10px 10px 4px 4px; }
  .bar span { font-size: .72rem; }
  .bar label { font-size: .62rem; width: 48px; }
  .tabs { overflow-x: auto; flex-wrap: nowrap; padding-bottom: .25rem; }
  .tab-btn { white-space: nowrap; flex-shrink: 0; }
  .timeline-item { padding: .7rem; gap: .55rem; }
  .profile-avatar { width: 76px; height: 76px; border-width: 3px; }
}

/* Soporte para movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Mejor foco para accesibilidad por teclado */
:focus-visible {
  outline: 3px solid var(--primary-2);
  outline-offset: 2px;
  border-radius: 6px;
}
.btn:focus-visible { outline-offset: 3px; }