/* ================================================================
   ENCICLOPEDIA UNIVERSITARIA - Sistema de Diseño Principal
   Fuentes: Playfair Display (títulos) + Source Sans 3 (cuerpo)
   Paleta: Blanco/Negro minimalista + acentos académicos
================================================================ */

/* ── VARIABLES ──────────────────────────────────────────────── */
:root {
  --eu-bg: #ffffff;
  --eu-bg-secondary: #f8f7f4;
  --eu-bg-tertiary: #f0ede8;
  --eu-surface: #ffffff;
  --eu-border: #e5e0d8;
  --eu-border-subtle: #f0ede8;

  --eu-text: #1a1614;
  --eu-text-secondary: #4a443d;
  --eu-text-muted: #8a8078;
  --eu-text-inverse: #ffffff;

  --eu-accent: #1a1614;
  --eu-accent-hover: #3a3028;
  --eu-accent-light: #f4f1eb;

  --eu-link: #1a1614;
  --eu-link-hover: #5a4a30;

  --eu-success: #15803d;
  --eu-warning: #b45309;
  --eu-danger: #b91c1c;
  --eu-info: #1d4ed8;
  --eu-pending: #d97706;

  --eu-navbar-h: 64px;
  --eu-shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.04);
  --eu-shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --eu-radius: 8px;
  --eu-radius-lg: 16px;
  --eu-transition: 200ms ease;

  --eu-code-bg: #f4f1eb;
  --eu-font-display: 'Playfair Display', Georgia, serif;
  --eu-font-body: 'Source Sans 3', -apple-system, sans-serif;
}

[data-theme="dark"] {
  --eu-bg: #0f0e0c;
  --eu-bg-secondary: #1a1814;
  --eu-bg-tertiary: #242018;
  --eu-surface: #1a1814;
  --eu-border: #2e2a22;
  --eu-border-subtle: #242018;

  --eu-text: #f2ede6;
  --eu-text-secondary: #c4b9a8;
  --eu-text-muted: #7a7060;
  --eu-text-inverse: #0f0e0c;

  --eu-accent: #f2ede6;
  --eu-accent-hover: #e0d5c0;
  --eu-accent-light: #2a2520;

  --eu-link: #d4c4a8;
  --eu-link-hover: #f2ede6;

  --eu-code-bg: #1e1c18;
  --eu-shadow: 0 1px 3px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.2);
  --eu-shadow-lg: 0 8px 32px rgba(0,0,0,.4);
}

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

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

body {
  font-family: var(--eu-font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--eu-text);
  background-color: var(--eu-bg);
  transition: background-color var(--eu-transition), color var(--eu-transition);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--eu-font-display);
  color: var(--eu-text);
  line-height: 1.25;
}

a { color: var(--eu-link); text-decoration: none; transition: color var(--eu-transition); }
a:hover { color: var(--eu-link-hover); text-decoration: underline; }

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

/* ── NAVBAR ─────────────────────────────────────────────────── */
.eu-navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--eu-surface);
  border-bottom: 1px solid var(--eu-border);
  box-shadow: var(--eu-shadow);
  transition: background var(--eu-transition);
}

.eu-navbar-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  height: var(--eu-navbar-h);
  max-width: 1400px;
  margin: 0 auto;
}

.eu-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  color: var(--eu-text) !important;
}

.eu-logo-icon {
  font-family: var(--eu-font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--eu-text);
  line-height: 1;
}

.eu-logo-text {
  font-family: var(--eu-font-body);
  font-size: 0.78rem;
  line-height: 1.3;
  color: var(--eu-text-secondary);
  font-weight: 400;
}

.eu-logo-text strong {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--eu-text);
  display: block;
}

/* Búsqueda */
.eu-search-wrapper {
  flex: 1;
  max-width: 520px;
  margin: 0 auto;
}

.eu-search-box {
  position: relative;
  width: 100%;
}

.eu-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--eu-text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.eu-search-input {
  width: 100%;
  padding: 8px 16px 8px 36px;
  border: 1.5px solid var(--eu-border);
  border-radius: 24px;
  background: var(--eu-bg-secondary);
  color: var(--eu-text);
  font-size: 0.9rem;
  font-family: var(--eu-font-body);
  transition: all var(--eu-transition);
  outline: none;
}

.eu-search-input:focus {
  border-color: var(--eu-text);
  background: var(--eu-surface);
  box-shadow: 0 0 0 3px rgba(0,0,0,.06);
}

.eu-search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--eu-surface);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius);
  box-shadow: var(--eu-shadow-lg);
  display: none;
  z-index: 2000;
  max-height: 400px;
  overflow-y: auto;
}

.eu-search-dropdown.active { display: block; }

.eu-search-result-item {
  padding: 10px 16px;
  cursor: pointer;
  transition: background var(--eu-transition);
  border-bottom: 1px solid var(--eu-border-subtle);
}

.eu-search-result-item:hover { background: var(--eu-bg-secondary); }
.eu-search-result-item:last-child { border-bottom: none; }

.eu-search-result-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--eu-text);
}

.eu-search-result-summary {
  font-size: 0.78rem;
  color: var(--eu-text-muted);
  margin-top: 2px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Controles derechos */
.eu-navbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.eu-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: none;
  color: var(--eu-text-secondary);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--eu-transition);
  font-size: 1rem;
}

.eu-icon-btn:hover {
  background: var(--eu-bg-secondary);
  color: var(--eu-text);
}

/* Toggle iOS */
.eu-toggle-wrap { gap: 6px; }

.eu-ios-toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  cursor: pointer;
}

.eu-ios-toggle input { opacity: 0; width: 0; height: 0; }

.eu-toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--eu-border);
  border-radius: 22px;
  transition: .3s;
}

.eu-toggle-slider::before {
  content: '';
  position: absolute;
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: .3s;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
}

.eu-ios-toggle input:checked + .eu-toggle-slider { background: var(--eu-text); }
.eu-ios-toggle input:checked + .eu-toggle-slider::before { transform: translateX(18px); }

.eu-toggle-label { font-size: 0.78rem; color: var(--eu-text-muted); white-space: nowrap; }

/* Contador artículos */
.eu-read-counter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  color: var(--eu-text-muted);
  background: var(--eu-bg-secondary);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid var(--eu-border);
  cursor: default;
}

.eu-read-counter.near-limit { color: var(--eu-warning); border-color: var(--eu-warning); }
.eu-read-counter.at-limit { color: var(--eu-danger); border-color: var(--eu-danger); }

/* Notificaciones */
.eu-notif-wrap { position: relative; }

.eu-notif-btn { position: relative; }

.eu-notif-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 16px;
  height: 16px;
  background: var(--eu-danger);
  color: white;
  border-radius: 8px;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
  line-height: 1;
}

.eu-notif-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 320px;
  background: var(--eu-surface);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  box-shadow: var(--eu-shadow-lg);
  display: none;
  z-index: 2000;
  overflow: hidden;
}

.eu-notif-dropdown.active { display: block; }

.eu-notif-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--eu-border);
  font-weight: 600;
  font-size: 0.88rem;
}

.eu-notif-list { max-height: 360px; overflow-y: auto; }

.eu-notif-item {
  padding: 10px 16px;
  border-bottom: 1px solid var(--eu-border-subtle);
  font-size: 0.83rem;
  transition: background var(--eu-transition);
  cursor: default;
}

.eu-notif-item:hover { background: var(--eu-bg-secondary); }
.eu-notif-item.unread { background: var(--eu-accent-light); }
.eu-notif-item .eu-notif-time { font-size: 0.73rem; color: var(--eu-text-muted); margin-top: 2px; }
.eu-notif-empty { padding: 24px 16px; text-align: center; color: var(--eu-text-muted); font-size: 0.88rem; }

/* Botones */
.eu-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--eu-accent);
  color: var(--eu-text-inverse);
  border: none;
  border-radius: var(--eu-radius);
  font-size: 0.88rem;
  font-weight: 600;
  font-family: var(--eu-font-body);
  cursor: pointer;
  transition: all var(--eu-transition);
  text-decoration: none;
  white-space: nowrap;
}

.eu-btn-primary:hover {
  background: var(--eu-accent-hover);
  color: var(--eu-text-inverse);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--eu-shadow);
}

.eu-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: transparent;
  color: var(--eu-text);
  border: 1.5px solid var(--eu-border);
  border-radius: var(--eu-radius);
  font-size: 0.88rem;
  font-weight: 500;
  font-family: var(--eu-font-body);
  cursor: pointer;
  transition: all var(--eu-transition);
  text-decoration: none;
}

.eu-btn-outline:hover {
  background: var(--eu-bg-secondary);
  color: var(--eu-text);
  text-decoration: none;
}

.eu-btn-sm { padding: 5px 12px; font-size: 0.8rem; }

/* Hamburguesa */
.eu-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.eu-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--eu-text);
  border-radius: 2px;
  transition: all var(--eu-transition);
}

/* Sidebar móvil */
.eu-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 1050;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--eu-transition);
}

.eu-sidebar-overlay.active { opacity: 1; pointer-events: auto; }

.eu-mobile-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  background: var(--eu-surface);
  z-index: 1060;
  transform: translateX(100%);
  transition: transform 300ms ease;
  border-left: 1px solid var(--eu-border);
  overflow-y: auto;
}

.eu-mobile-sidebar.open { transform: translateX(0); }

.eu-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--eu-border);
}

.eu-sidebar-nav { padding: 16px; }

.eu-sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--eu-radius);
  color: var(--eu-text-secondary);
  font-size: 0.95rem;
  transition: all var(--eu-transition);
}

.eu-sidebar-nav a:hover { background: var(--eu-bg-secondary); color: var(--eu-text); text-decoration: none; }

.eu-sidebar-divider { height: 1px; background: var(--eu-border); margin: 12px 0; }

.eu-sidebar-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  font-size: 0.9rem;
  color: var(--eu-text-secondary);
}

/* ── MAIN CONTENT ────────────────────────────────────────────── */
.eu-main {
  min-height: calc(100vh - var(--eu-navbar-h) - 280px);
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ── ARTICLE CARDS ───────────────────────────────────────────── */
.eu-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.eu-article-card {
  background: var(--eu-surface);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  padding: 24px;
  transition: all var(--eu-transition);
  cursor: pointer;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.eu-article-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--eu-text);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms ease;
}

.eu-article-card:hover {
  box-shadow: var(--eu-shadow-lg);
  transform: translateY(-2px);
  border-color: var(--eu-text);
  text-decoration: none;
}

.eu-article-card:hover::before { transform: scaleX(1); }

.eu-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.eu-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.eu-status-APPROVED { background: #dcfce7; color: #15803d; }
.eu-status-PENDING { background: #fef9c3; color: #b45309; }
.eu-status-REJECTED { background: #fee2e2; color: #b91c1c; }

[data-theme="dark"] .eu-status-APPROVED { background: #14532d; color: #4ade80; }
[data-theme="dark"] .eu-status-PENDING { background: #451a03; color: #fbbf24; }
[data-theme="dark"] .eu-status-REJECTED { background: #450a0a; color: #f87171; }

.eu-category-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--eu-bg-secondary);
  color: var(--eu-text-secondary);
  border: 1px solid var(--eu-border);
}

.eu-card-title {
  font-family: var(--eu-font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--eu-text);
  margin-bottom: 8px;
  line-height: 1.3;
}

.eu-card-summary {
  font-size: 0.88rem;
  color: var(--eu-text-secondary);
  line-height: 1.55;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.eu-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--eu-border-subtle);
  font-size: 0.75rem;
  color: var(--eu-text-muted);
}

/* ── ARTICLE PAGE ────────────────────────────────────────────── */
.eu-article-wrapper {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .eu-article-wrapper { grid-template-columns: 1fr; }
}

.eu-article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--eu-border);
}

.eu-article-title {
  font-family: var(--eu-font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.eu-article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.83rem;
  color: var(--eu-text-muted);
}

.eu-article-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--eu-text-secondary);
}

.eu-article-content h2, .eu-article-content h3 {
  color: var(--eu-text);
  margin-top: 2em;
  margin-bottom: 0.75em;
}

.eu-article-content p { margin-bottom: 1.2em; }

.eu-article-content code {
  background: var(--eu-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.eu-article-content pre {
  background: var(--eu-code-bg);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius);
  padding: 16px;
  overflow-x: auto;
  margin-bottom: 1.2em;
}

.eu-article-content blockquote {
  border-left: 3px solid var(--eu-text);
  padding: 8px 16px;
  margin: 1.2em 0;
  color: var(--eu-text-secondary);
  font-style: italic;
  background: var(--eu-bg-secondary);
  border-radius: 0 var(--eu-radius) var(--eu-radius) 0;
}

.eu-article-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.2em;
  font-size: 0.9em;
}

.eu-article-content th, .eu-article-content td {
  padding: 8px 12px;
  border: 1px solid var(--eu-border);
  text-align: left;
}

.eu-article-content th {
  background: var(--eu-bg-secondary);
  font-weight: 600;
}

/* Sidebar del artículo */
.eu-article-sidebar { position: sticky; top: calc(var(--eu-navbar-h) + 24px); height: fit-content; }

.eu-sidebar-widget {
  background: var(--eu-bg-secondary);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.eu-sidebar-widget h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--eu-text-muted);
  margin-bottom: 12px;
}

/* ── SHORTCODE COMPONENTES ───────────────────────────────────── */

/* Tooltip */
.eu-tooltip { border-bottom: 1px dashed var(--eu-text-muted); cursor: help; }

/* Callout */
.eu-callout {
  display: flex;
  gap: 12px;
  background: var(--eu-bg-secondary);
  border: 1px solid var(--eu-border);
  border-left: 3px solid var(--eu-text);
  border-radius: 0 var(--eu-radius) var(--eu-radius) 0;
  padding: 14px 16px;
  margin: 16px 0;
}

.eu-callout-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.eu-callout-body { font-size: 0.93rem; line-height: 1.6; }

/* Fórmula */
.eu-formula {
  text-align: center;
  font-family: 'Times New Roman', serif;
  font-size: 1.15em;
  padding: 16px;
  background: var(--eu-code-bg);
  border-radius: var(--eu-radius);
  margin: 16px 0;
  overflow-x: auto;
}

/* Imagen con caption */
.eu-figure { margin: 20px 0; }
.eu-article-img { border-radius: var(--eu-radius); width: 100%; }
.eu-caption { font-size: 0.82rem; color: var(--eu-text-muted); font-style: italic; margin-top: 6px; }

/* Diagrama interactivo */
.eu-interactive-diagram {
  background: var(--eu-bg-secondary);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  padding: 20px;
  margin: 20px 0;
}

.eu-diagram-title {
  font-family: var(--eu-font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--eu-text);
  margin-bottom: 12px;
}

.eu-diagram-canvas {
  position: relative;
  width: 100%;
  padding-top: 60%;
  background: var(--eu-bg);
  border-radius: var(--eu-radius);
  border: 1px solid var(--eu-border);
  overflow: hidden;
}

.eu-diagram-cell {
  position: absolute;
  transform: translate(-50%, -50%);
  padding: 6px 14px;
  border-radius: 20px;
  border: none;
  color: white;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 200ms ease;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
  z-index: 5;
  white-space: nowrap;
}

.eu-diagram-cell:hover {
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 4px 16px rgba(0,0,0,.3);
  z-index: 10;
}

.eu-cell-popup {
  position: fixed;
  background: var(--eu-surface);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  padding: 16px;
  width: 240px;
  box-shadow: var(--eu-shadow-lg);
  z-index: 9999;
  display: none;
  font-size: 0.85rem;
  animation: eu-popup-in 150ms ease;
}

.eu-cell-popup.active { display: block; }

.eu-cell-popup strong { display: block; margin-bottom: 6px; font-size: 0.95rem; }
.eu-cell-desc { color: var(--eu-text-secondary); line-height: 1.5; margin-bottom: 8px; }

@keyframes eu-popup-in {
  from { opacity: 0; transform: scale(0.95) translateY(4px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Accordion custom */
.eu-accordion .accordion-button {
  font-family: var(--eu-font-display);
  font-size: 0.95rem;
  background: var(--eu-bg-secondary);
  color: var(--eu-text);
  border: none;
}

.eu-accordion .accordion-button:not(.collapsed) { background: var(--eu-accent-light); color: var(--eu-text); box-shadow: none; }
.eu-accordion .accordion-item { border-color: var(--eu-border); background: var(--eu-surface); }
.eu-accordion .accordion-body { background: var(--eu-surface); }

/* Tabs custom */
.eu-tabs .nav-tabs { border-color: var(--eu-border); }
.eu-tabs .nav-link { color: var(--eu-text-secondary); border-color: transparent; font-size: 0.9rem; }
.eu-tabs .nav-link.active { color: var(--eu-text); border-color: var(--eu-border) var(--eu-border) var(--eu-surface); background: var(--eu-surface); }
.eu-tabs .nav-link:hover { color: var(--eu-text); border-color: transparent; }
.eu-tabs .tab-content { background: var(--eu-surface); border-color: var(--eu-border); border-radius: 0 0 var(--eu-radius) var(--eu-radius); }

/* Article ref link */
.eu-article-ref {
  color: var(--eu-link-hover);
  text-decoration: underline;
  text-decoration-style: dotted;
}

/* Card */
.eu-card {
  background: var(--eu-surface);
  border-color: var(--eu-border);
  border-radius: var(--eu-radius-lg) !important;
  transition: all var(--eu-transition);
}

.eu-card:hover { box-shadow: var(--eu-shadow); }

/* ── PAYWALL ─────────────────────────────────────────────────── */
.eu-paywall {
  background: var(--eu-bg-secondary);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  padding: 40px;
  text-align: center;
  margin-top: 32px;
  position: relative;
}

.eu-paywall::before {
  content: '';
  position: absolute;
  top: -80px;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--eu-bg));
  pointer-events: none;
}

.eu-paywall-title {
  font-family: var(--eu-font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.eu-paywall-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--eu-text);
  margin: 16px 0;
}

.eu-paywall-price small { font-size: 1rem; color: var(--eu-text-muted); font-weight: 400; }

.eu-paywall-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 20px 0;
  text-align: left;
  max-width: 300px;
  margin-left: auto;
  margin-right: auto;
}

.eu-paywall-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--eu-text-secondary);
}

.eu-paywall-features li::before { content: '✓'; color: var(--eu-success); font-weight: 700; }

/* ── ADMIN PANEL ─────────────────────────────────────────────── */
.eu-admin-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0;
  min-height: calc(100vh - var(--eu-navbar-h));
}

.eu-admin-sidebar {
  background: var(--eu-bg-secondary);
  border-right: 1px solid var(--eu-border);
  padding: 24px 0;
  position: sticky;
  top: var(--eu-navbar-h);
  height: calc(100vh - var(--eu-navbar-h));
  overflow-y: auto;
}

.eu-admin-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--eu-text-secondary);
  font-size: 0.9rem;
  transition: all var(--eu-transition);
  border-left: 3px solid transparent;
}

.eu-admin-nav a:hover, .eu-admin-nav a.active {
  color: var(--eu-text);
  background: var(--eu-bg);
  border-left-color: var(--eu-text);
  text-decoration: none;
}

.eu-admin-main { padding: 32px; overflow-y: auto; }

/* Stats cards admin */
.eu-stat-card {
  background: var(--eu-surface);
  border: 1px solid var(--eu-border);
  border-radius: var(--eu-radius-lg);
  padding: 20px 24px;
}

.eu-stat-number { font-size: 2rem; font-weight: 800; line-height: 1; margin-bottom: 4px; }
.eu-stat-label { font-size: 0.8rem; color: var(--eu-text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* Tabla admin */
.eu-admin-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.eu-admin-table th { padding: 8px 12px; text-align: left; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--eu-text-muted); border-bottom: 2px solid var(--eu-border); white-space: nowrap; }
.eu-admin-table td { padding: 12px; border-bottom: 1px solid var(--eu-border-subtle); vertical-align: top; }
.eu-admin-table tr:hover td { background: var(--eu-bg-secondary); }

/* ── FORMS ───────────────────────────────────────────────────── */
.eu-form-group { margin-bottom: 20px; }

.eu-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--eu-text);
  margin-bottom: 6px;
}

.eu-input, .eu-select, .eu-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--eu-border);
  border-radius: var(--eu-radius);
  background: var(--eu-bg-secondary);
  color: var(--eu-text);
  font-size: 0.9rem;
  font-family: var(--eu-font-body);
  transition: all var(--eu-transition);
  outline: none;
}

.eu-input:focus, .eu-select:focus, .eu-textarea:focus {
  border-color: var(--eu-text);
  background: var(--eu-surface);
  box-shadow: 0 0 0 3px rgba(0,0,0,.06);
}

.eu-textarea { min-height: 120px; resize: vertical; }

/* Editor Markdown */
.eu-editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px;
  background: var(--eu-bg-secondary);
  border: 1.5px solid var(--eu-border);
  border-bottom: none;
  border-radius: var(--eu-radius) var(--eu-radius) 0 0;
}

.eu-editor-btn {
  padding: 4px 8px;
  background: none;
  border: 1px solid var(--eu-border);
  border-radius: 4px;
  color: var(--eu-text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--eu-transition);
  font-family: monospace;
}

.eu-editor-btn:hover { background: var(--eu-surface); color: var(--eu-text); }

.eu-editor-area {
  border-radius: 0 0 var(--eu-radius) var(--eu-radius);
  font-family: 'Courier New', monospace;
  font-size: 0.88rem;
  line-height: 1.6;
  min-height: 400px;
}

.eu-preview-area {
  border: 1.5px solid var(--eu-border);
  border-radius: var(--eu-radius);
  padding: 20px;
  min-height: 200px;
  background: var(--eu-surface);
}

/* ── FOOTER ──────────────────────────────────────────────────── */
.eu-footer {
  background: var(--eu-bg-secondary);
  border-top: 1px solid var(--eu-border);
  padding: 48px 0 0;
  margin-top: 64px;
}

.eu-footer-heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--eu-text-muted);
  margin-bottom: 12px;
}

.eu-footer-links { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.eu-footer-links a { font-size: 0.88rem; color: var(--eu-text-secondary); }
.eu-footer-links a:hover { color: var(--eu-text); }

.eu-footer-bottom {
  margin-top: 32px;
  padding: 16px 0;
  border-top: 1px solid var(--eu-border);
  text-align: center;
}

/* ── TOAST ───────────────────────────────────────────────────── */
.eu-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.eu-toast {
  background: var(--eu-text);
  color: var(--eu-text-inverse);
  padding: 12px 20px;
  border-radius: var(--eu-radius);
  font-size: 0.88rem;
  min-width: 220px;
  box-shadow: var(--eu-shadow-lg);
  animation: eu-slide-in 250ms ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

.eu-toast.success { background: var(--eu-success); }
.eu-toast.error { background: var(--eu-danger); }
.eu-toast.warning { background: var(--eu-warning); }

@keyframes eu-slide-in {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── LOADING ─────────────────────────────────────────────────── */
.eu-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  gap: 16px;
  color: var(--eu-text-muted);
  font-size: 0.9rem;
}

.eu-spinner {
  width: 32px;
  height: 32px;
  border: 2.5px solid var(--eu-border);
  border-top-color: var(--eu-text);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.eu-empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--eu-text-muted);
}

.eu-empty-state i { font-size: 3rem; margin-bottom: 16px; display: block; }

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .eu-main { padding: 20px 16px; }
  .eu-articles-grid { grid-template-columns: 1fr; }
  .eu-article-wrapper { grid-template-columns: 1fr; }
  .eu-admin-layout { grid-template-columns: 1fr; }
  .eu-admin-sidebar { position: static; height: auto; }
  .eu-paywall { padding: 24px 20px; }
  .eu-navbar-inner { padding: 0 16px; gap: 8px; }
}

@media (max-width: 480px) {
  .eu-logo-text { display: none; }
  .eu-read-counter { display: none !important; }
}

/* ── UTILIDADES ──────────────────────────────────────────────── */
.eu-divider { height: 1px; background: var(--eu-border); margin: 24px 0; }
.eu-section-title { font-family: var(--eu-font-display); font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.eu-section-subtitle { color: var(--eu-text-muted); font-size: 0.9rem; margin-bottom: 24px; }

/* Overrides Bootstrap para modo oscuro */
[data-theme="dark"] .accordion-button::after { filter: invert(1); }
[data-theme="dark"] .btn-close { filter: invert(1); }
[data-theme="dark"] .alert { border-color: var(--eu-border); }
[data-theme="dark"] .alert-info { background: #1e3a5f; color: #93c5fd; }
[data-theme="dark"] .alert-warning { background: #451a03; color: #fbbf24; }
[data-theme="dark"] .alert-danger { background: #450a0a; color: #f87171; }
[data-theme="dark"] .alert-success { background: #14532d; color: #4ade80; }