/* ==========================================================================
   Utiliti LMS — Componentes de UI
   ========================================================================== */

/* ==========================================================================
   Dashboard de Usuario — Layout estilo MasterStudy
   ========================================================================== */

.ud-page {
  background: var(--color-bg);
  padding: 2rem 0 3rem;
}

.ud-container {
  width: 100%;
  max-width: 1228px;
  margin-inline: auto;
  padding-inline: 0;
}

@media (max-width: 768px) {
  .ud-container { padding-inline: 1rem; }
}

/* ── Barra de perfil (una sola fila: identidad + stats) ─────────────────── */
.ud-profile-bar {
  display: flex;
  align-items: stretch;
  background: var(--color-surface);
  overflow: hidden;
}

/* Sección izquierda: avatar + nombre */
.ud-bar-identity {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
  min-width: 200px;
}

.ud-profile-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.ud-profile-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.ud-profile-name {
  font-size: var(--text-base);
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
}

.ud-profile-link {
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
}
.ud-profile-link:hover { text-decoration: underline; }

/* Sección derecha: stats en fila */
.ud-bar-stats {
  display: flex;
  align-items: stretch;
  flex: 1;
}

.ud-bar-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  flex: 1;
  padding: 0.75rem 1rem;
  border-right: 1px solid var(--color-border);
  text-align: center;
  transition: background var(--transition);
}
.ud-bar-stat:last-child { border-right: none; }
.ud-bar-stat:hover { background: var(--color-surface-hover); }

.ud-bar-icon {
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ud-bar-text {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  white-space: nowrap;
}

.ud-bar-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.2;
}

.ud-bar-value {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .ud-profile-bar { flex-direction: column; }
  .ud-bar-identity { border-right: none; border-bottom: 1px solid var(--color-border); min-width: 0; }
  .ud-bar-stats { flex-wrap: wrap; }
  .ud-bar-stat { flex: 0 0 50%; border-bottom: 1px solid var(--color-border); }
  .ud-bar-stat:nth-child(2n) { border-right: none; }
  .ud-bar-stat:nth-last-child(-n+2) { border-bottom: none; }
}

@media (max-width: 480px) {
  .ud-bar-stat { flex: 0 0 100%; border-right: none; }
  .ud-bar-stat:last-child { border-bottom: none; }
}

/* --------------------------------------------------------------------------
   Layout — Contenedores y estructura de página
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  box-shadow: 0 2px 12px rgba(0,0,0,0.10);
}

/* Cuando la barra de admin de WordPress está visible */
.admin-bar .site-header {
  top: 32px;
}

@media screen and (max-width: 782px) {
  .admin-bar .site-header { top: 46px; }
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 1228px;
  margin-inline: auto;
  padding: 1rem 1.5rem;
  width: 100%;
  transition: padding 0.3s ease;
}

.is-scrolled .header-inner {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.logo-img {
  max-height: 40px;
  width: auto;
  transition: max-height 0.3s ease;
}

.is-scrolled .logo-img {
  max-height: 28px;
}

/* ── Donut de avance ───────────────────────────────────────────────────── */
.ud-donut { display: block; }

.ud-donut-bg   { stroke: var(--color-border); }
.ud-donut-fill { stroke: var(--color-primary); stroke-linecap: round; transition: stroke-dashoffset 0.6s ease; }

.ud-donut-text {
  font-size: 9px;
  font-weight: 700;
  fill: var(--color-text);
  font-family: inherit;
}

/* ── Layout sidebar + contenido ────────────────────────────────────────── */
.ud-layout {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  align-items: flex-start;
}

/* Sidebar */
.ud-sidebar {
  width: 220px;
  flex-shrink: 0;
}

.ud-sidebar-heading {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem 0;
}

.ud-sidebar-menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ud-sidebar-menu li a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.75rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.ud-sidebar-menu li a:hover {
  background: var(--color-surface-hover);
  color: var(--color-primary);
}

.ud-sidebar-logout {
  color: var(--color-error, #dc2626) !important;
}
.ud-sidebar-logout:hover {
  background: #fef2f2 !important;
  color: var(--color-error, #dc2626) !important;
}

/* Contenido principal */
.ud-main { flex: 1; min-width: 0; }

.ud-section-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin: 0 0 1rem 0;
}

/* Título + tabs en una línea */
.ud-tabs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.ud-section-title { margin: 0; white-space: nowrap; }

/* Tabs */
.ud-tabs {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: none;
  margin-bottom: 0;
}

.ud-tab {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.ud-tab:hover { color: var(--color-text); }

.ud-tab.active {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: -2px;
  font-weight: 600;
}

.ud-tab-count {
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  border-radius: 999px;
  padding: 0 6px;
  line-height: 18px;
}

/* Grid de cursos */
.ud-courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.ud-course-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition);
}
.ud-course-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }

.ud-course-thumb {
  display: block;
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-surface-hover);
}
.ud-course-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.ud-course-card:hover .ud-course-thumb img { transform: scale(1.03); }

.ud-course-thumb-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-primary-light, #dbeafe), var(--color-border));
}

.ud-course-badge {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
}
.ud-course-badge.completado { background: #dcfce7; color: #166534; }
.ud-course-badge.en-progreso { background: #dbeafe; color: #1d4ed8; }

.ud-course-body {
  padding: 0.875rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.ud-course-title {
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
}
.ud-course-title a { color: var(--color-text); text-decoration: none; }
.ud-course-title a:hover { color: var(--color-primary); }

.ud-course-progress {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.ud-progress-bar {
  flex: 1;
  height: 5px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}
.ud-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 999px;
  transition: width 0.4s;
}
.ud-progress-pct {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.ud-course-btn {
  margin-top: auto;
  text-align: center;
  width: 100%;
  justify-content: center;
}

.ud-empty {
  grid-column: 1 / -1;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* Responsive */
@media (max-width: 1024px) {
  .ud-courses-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ud-layout { flex-direction: column; }
  .ud-sidebar { width: 100%; }
  .ud-sidebar-menu { display: flex; flex-wrap: wrap; gap: 0.5rem; }
  .ud-courses-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .ud-courses-grid { grid-template-columns: 1fr; }
}

/* -------------------------------------------------------------------------- */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-img { max-height: 40px; width: auto; }

.logo-text {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  font-family: var(--font-heading);
}

.main-nav {
  flex: 1;
  display: flex;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
}

.nav-menu li a {
  display: block;
  padding: 0.5rem 0.875rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition), background var(--transition);
  text-decoration: none;
}

.nav-menu li a:hover,
.nav-menu li.current-menu-item > a {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
}
.header-btn:hover { color: var(--color-primary); background: var(--color-primary-light); }

/* User menu */
.user-menu { position: relative; }

.user-menu-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
  font-size: var(--text-sm);
  font-weight: 500;
}
.user-menu-toggle:hover { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }
.user-menu-toggle[aria-expanded="true"] { border-color: var(--color-primary); }

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.user-name {
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 0.375rem;
  z-index: 200;
  opacity: 0;
  transform: translateY(-6px) scale(0.97);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}

.user-dropdown.is-open {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.user-dropdown li a {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--transition);
  text-decoration: none;
}
.user-dropdown li a:hover { background: var(--color-bg); }
.user-dropdown .logout-link { color: var(--color-danger); }
.user-dropdown .logout-link:hover { background: var(--color-danger-light); }
.dropdown-divider { border-top: 1px solid var(--color-border); margin: 0.25rem 0; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--radius-md);
}
.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: 1228px;
  margin-inline: auto;
  padding: 1.25rem 1.5rem;
  width: 100%;
}

.footer-logo-link { display: flex; align-items: center; text-decoration: none; flex-shrink: 0; }
.footer-logo-img  { max-height: 36px; width: auto; }
.footer-logo-text { font-size: var(--text-lg); font-weight: 700; color: var(--color-text); }
.footer-copy      { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

/* Main content */
.main-content {
  min-height: calc(100vh - var(--header-height) - 200px);
  padding: 2rem 0;
}

#page-wrapper { display: flex; flex-direction: column; min-height: calc(100vh - var(--header-height)); }

/* Skip link */
.skip-link:focus {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 9999;
  background: var(--color-text);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  clip: auto;
  width: auto;
  height: auto;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  user-select: none;
}

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

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Variantes */
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
  border-color: var(--color-secondary);
}
.btn-secondary:hover { opacity: 0.9; color: #fff; text-decoration: none; }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-light);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--color-bg); color: var(--color-text); }

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

/* Tamaños */
.btn-sm { padding: 0.375rem 0.75rem; font-size: var(--text-xs); }
.btn-lg { padding: 0.875rem 1.75rem; font-size: var(--text-base); }
.btn-full { width: 100%; }

/* --------------------------------------------------------------------------
   Tarjetas
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }

/* --------------------------------------------------------------------------
   Formularios
   -------------------------------------------------------------------------- */
.form-group { margin-bottom: 1.25rem; }

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control::placeholder { color: var(--color-text-light); }

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

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

.form-row-inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-sm);
  cursor: pointer;
  color: var(--color-text-muted);
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  appearance: none;
  background: var(--color-surface);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: background var(--transition), border-color var(--transition);
}
.checkbox-label input[type="checkbox"]:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.checkbox-label input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  inset: 2px 3px;
  border: 2px solid #fff;
  border-top: none;
  border-right: none;
  transform: rotate(-45deg) translateY(-1px);
}

.input-with-toggle { position: relative; }
.input-with-toggle .form-control { padding-right: 2.5rem; }
.toggle-password {
  position: absolute;
  right: 0.625rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 4px;
  color: var(--color-text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.toggle-password:hover { color: var(--color-text-muted); }

/* Alertas */
.alert {
  padding: 0.875rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  border: 1px solid;
  margin-bottom: 1.25rem;
}
.alert-danger  { background: var(--color-danger-light);  border-color: var(--color-danger);  color: #7f1d1d; }
.alert-success { background: var(--color-success-light); border-color: var(--color-success); color: #064e3b; }
.alert-warning { background: var(--color-warning-light); border-color: var(--color-warning); color: #78350f; }
.alert-info    { background: var(--color-info-light);    border-color: var(--color-info);    color: #1e3a5f; }

/* --------------------------------------------------------------------------
   Barra de progreso
   -------------------------------------------------------------------------- */
.progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 0.25rem;
}

.progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar[aria-valuenow="100"] .progress-fill { background: var(--color-success); }

.progress-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   Grids de contenido
   -------------------------------------------------------------------------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.post-card { display: flex; flex-direction: column; }
.post-thumbnail { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.post-card-body { padding: 1.25rem; flex: 1; display: flex; flex-direction: column; gap: 0.75rem; }
.post-thumbnail-link { overflow: hidden; display: block; }

.entry-title { font-size: var(--text-xl); line-height: 1.4; }
.entry-title a { color: var(--color-text); text-decoration: none; }
.entry-title a:hover { color: var(--color-primary); }
.entry-meta { font-size: var(--text-xs); color: var(--color-text-muted); display: flex; gap: 0.75rem; flex-wrap: wrap; }
.entry-summary { font-size: var(--text-sm); color: var(--color-text-muted); flex: 1; }

/* --------------------------------------------------------------------------
   Dashboard
   -------------------------------------------------------------------------- */
.dashboard-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.dashboard-welcome {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.dashboard-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.dashboard-greeting {
  font-size: var(--text-2xl);
  margin-bottom: 0.125rem;
}

.dashboard-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.stat-icon--blue   { background: var(--color-info-light);    color: var(--color-primary); }
.stat-icon--green  { background: var(--color-success-light); color: var(--color-success); }
.stat-icon--orange { background: var(--color-warning-light); color: var(--color-warning); }
.stat-icon--purple { background: #EDE9FE;                    color: var(--color-secondary); }

.stat-body { display: flex; flex-direction: column; }
.stat-value { font-size: var(--text-3xl); font-weight: 700; line-height: 1; color: var(--color-text); }
.stat-label { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 0.25rem; }

/* Dashboard sections */
.dashboard-section { margin-bottom: 2.5rem; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.section-title { font-size: var(--text-xl); }

.section-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}
.section-link:hover { text-decoration: underline; }

/* Courses grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.course-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition);
}
.course-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}

.course-card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--color-primary-light);
  overflow: hidden;
}
.course-card-thumb img { width: 100%; height: 100%; object-fit: cover; }

.course-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  opacity: 0.6;
}

.course-status-badge {
  position: absolute;
  top: 0.625rem;
  right: 0.625rem;
  padding: 0.25rem 0.625rem;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.status--completed { background: var(--color-success-light); color: #065f46; border-color: var(--color-success); }
.status--progress  { background: var(--color-info-light);    color: #1e40af; border-color: var(--color-info); }
.status--new       { background: #fff;                       color: var(--color-text-muted); }

.course-card-body { padding: 1rem; flex: 1; display: flex; flex-direction: column; gap: 0.5rem; }
.course-card-title { font-size: var(--text-base); font-weight: 600; line-height: 1.4; color: var(--color-text); }

/* Groups grid */
.groups-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.group-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.group-card-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-secondary);
}

.group-card-title { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); margin: 0; }
.group-card-meta { font-size: var(--text-xs); color: var(--color-text-muted); margin: 0; }

/* --------------------------------------------------------------------------
   Contenido de página (prosa)
   -------------------------------------------------------------------------- */
.content-layout { max-width: var(--content-max); margin-inline: auto; }

.prose .entry-content {
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text);
}

.prose .entry-content > * + * { margin-top: 1.25rem; }

.prose .entry-content h2,
.prose .entry-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.prose .entry-content ul,
.prose .entry-content ol {
  padding-left: 1.5rem;
}

.prose .entry-content ul { list-style: disc; }
.prose .entry-content ol { list-style: decimal; }
.prose .entry-content li + li { margin-top: 0.25rem; }

.prose .entry-content a { text-decoration: underline; }
.prose .entry-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-style: italic;
  margin-left: 0;
}

.prose .entry-content img { border-radius: var(--radius-md); }

.prose .entry-content table th,
.prose .entry-content table td {
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-border);
  text-align: left;
}
.prose .entry-content table th { background: var(--color-bg); font-weight: 600; }
.prose .entry-content table tr:nth-child(even) td { background: var(--color-surface-hover); }

/* --------------------------------------------------------------------------
   Landing page
   -------------------------------------------------------------------------- */
.landing-page { padding: 0; }

.hero-section {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #fff 60%);
  padding: 5rem 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.2;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-visual { border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-xl); }
.hero-img { width: 100%; }
.hero-placeholder { width: 100%; }

.features-section { padding: 4rem 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  text-align: center;
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.feature-card h3 { font-size: var(--text-xl); margin-bottom: 0.5rem; }
.feature-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

.cta-section {
  background: var(--color-primary);
  color: #fff;
  padding: 4rem 0;
}

.cta-inner { text-align: center; }
.cta-inner h2 { color: #fff; font-size: var(--text-3xl); margin-bottom: 0.75rem; }
.cta-inner p { color: rgba(255,255,255,0.85); font-size: var(--text-lg); margin-bottom: 2rem; }
.cta-inner .btn-primary {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.cta-inner .btn-primary:hover { background: rgba(255,255,255,0.9); }

/* --------------------------------------------------------------------------
   Error 404
   -------------------------------------------------------------------------- */
.error-page {
  text-align: center;
  padding: 5rem 1rem;
}

.error-code {
  font-size: 8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--color-primary-light);
  font-family: var(--font-heading);
  margin-bottom: 0.5rem;
}

.error-title { font-size: var(--text-3xl); margin-bottom: 0.75rem; }
.error-message { color: var(--color-text-muted); font-size: var(--text-lg); margin-bottom: 2rem; }
.error-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* --------------------------------------------------------------------------
   Empty state
   -------------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
}
.empty-state svg { margin: 0 auto 1rem; opacity: 0.4; }
.empty-state p { margin-bottom: 1.25rem; }

/* --------------------------------------------------------------------------
   Breadcrumbs
   -------------------------------------------------------------------------- */
.ld-breadcrumbs,
.breadcrumbs {
  margin-bottom: 1.5rem;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  font-size: var(--text-sm);
}

.breadcrumb-item { display: flex; align-items: center; gap: 0.25rem; }
.breadcrumb-item a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb-item a:hover { color: var(--color-primary); }
.breadcrumb-item.active { color: var(--color-text); font-weight: 500; }
.breadcrumb-sep { color: var(--color-border); }

/* --------------------------------------------------------------------------
   Post navigation
   -------------------------------------------------------------------------- */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
  border-top: 1px solid var(--color-border);
  padding-top: 1.5rem;
}
.nav-previous, .nav-next {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
}
.nav-subtitle { display: block; font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: 0.25rem; }
.nav-title { display: block; font-weight: 600; color: var(--color-text); }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { display: none; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .user-name { display: none; }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.5rem;
    transform: translateY(-110%);
    transition: transform var(--transition);
    z-index: 90;
    box-shadow: var(--shadow-lg);
  }
  .main-nav.is-open { transform: none; }
  .nav-menu { flex-direction: column; align-items: stretch; }
  .nav-menu li a { padding: 0.75rem 1rem; }

  .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom-inner { flex-direction: column; gap: 0.5rem; text-align: center; }

  .features-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-grid { grid-template-columns: 1fr; }
  .groups-grid  { grid-template-columns: 1fr; }
  .post-navigation { grid-template-columns: 1fr; }
  .form-row-inline { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
}