/* ============================================
   MARTE - Sistema de Gestión Académica
   Diseño: Estilo CTP Pañol (Flat & Minimal)
   Paleta: Bandera Tierra del Fuego
   Blanco + Azul (#00529B) + Naranja (#F4A100)
   ============================================ */

/* === VARIABLES === */
:root {
  --accent: #00529B;
  --accent-hover: #006BD6;
  --accent-light: #e7f1fa;
  --warning: #f97316;
  --warning-hover: #ea580c;
  --warning-light: #fef6e7;
  --success: #1a8c52;
  --success-light: rgba(26,140,82,0.08);
  --danger: #c0392b;
  --danger-light: rgba(192,57,43,0.08);
  --bg: #fafafa;
  --surface: #ffffff;
  --border: #e2e2e2;
  --text: #1a1a1a;
  --text-secondary: #666666;
  --text-muted: #999999;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --radius: 8px;
  --transition: 0.15s ease;
}

html.dark {
  --accent: #1A7FE0;
  --accent-hover: #4DA6FF;
  --accent-light: rgba(26,127,224,0.15);
  --warning: #f97316;
  --warning-hover: #f59e0b;
  --warning-light: rgba(244,161,0,0.15);
  --success-light: rgba(22,163,74,0.12);
  --danger-light: rgba(239,68,68,0.12);
  --bg: #0F172A;
  --surface: #1E293B;
  --border: #334155;
  --text: #E2E8F0;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }

/* === SCROLLBAR === */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 20px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }
html.dark ::-webkit-scrollbar-thumb { background: #334155; }

/* === NAVBAR === */
.main-header {
  background: linear-gradient(135deg, var(--accent) 0%, #003d73 100%);
  border-bottom: 2px solid var(--warning);
  height: 3.5rem;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}



.navbar-logo-img {
  height: 1.75rem;
  width: auto;
  display: block;
}

.navbar-title {
  font-weight: 800;
  font-size: 1.125rem;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.navbar-spacer { flex: 1; }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar-icon {
  color: rgba(255,255,255,0.6);
  font-size: 1rem;
  transition: color var(--transition);
  cursor: pointer;
  padding: 0.375rem;
  border-radius: 6px;
  transition: all 0.15s;
}
.navbar-icon:hover { color: var(--warning); background: rgba(255,255,255,0.08); }

/* User dropdown */
.dropdown { position: relative; }
.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.5rem 0.25rem 0.25rem;
  border-radius: 8px;
  transition: background var(--transition);
  border: 1px solid transparent;
}
.dropdown-toggle:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.12); }

.dropdown-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--warning) 0%, #d48900 100%);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.75rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.dropdown-user-info { display: none; }
@media (min-width: 768px) { .dropdown-user-info { display: block; } }

.dropdown-user-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: #ffffff;
  line-height: 1.2;
}

.dropdown-user-role {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--warning);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.dropdown-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  width: 14rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  overflow: hidden;
  z-index: 100;
  animation: dropdownIn 0.15s ease;
}

@keyframes dropdownIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.dropdown:hover .dropdown-menu { display: block; }

.dropdown-header {
  padding: 0.75rem 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.dropdown-header-name {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown-header-email {
  font-size: 0.6875rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 0.125rem;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.55rem 1rem;
  font-size: 0.8125rem;
  color: var(--text);
  transition: background var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.dropdown-item:hover { background: var(--accent-light); }
.dropdown-item i { opacity: 0.5; width: 1.125rem; text-align: center; font-size: 0.8125rem; }

.dropdown-item-danger { color: var(--danger); }
.dropdown-item-danger:hover { background: rgba(192,57,43,0.08); }

.dropdown-divider { height: 1px; background: var(--border); margin: 0.25rem 0; }

/* Mobile menu btn */
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.125rem;
  height: 2.125rem;
  margin-right: 0.5rem;
  color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  transition: all var(--transition);
  font-size: 0.875rem;
}
.mobile-menu-btn:hover { background: rgba(255,255,255,0.12); color: #fff; }
@media (min-width: 768px) { .mobile-menu-btn { display: none; } }

/* === SIDEBAR === */
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 40; backdrop-filter: blur(2px); }
.sidebar-overlay.active { display: block; }
@media (min-width: 768px) { .sidebar-overlay { display: none !important; } }

.main-sidebar {
  position: fixed;
  top: 3.5rem;
  left: 0;
  width: 15rem;
  height: calc(100vh - 3.5rem);
  background: var(--surface);
  border-right: 1px solid var(--border);
  z-index: 50;
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
@media (min-width: 768px) { .main-sidebar { transform: translateX(0) !important; } }
.main-sidebar.open { transform: translateX(0); }

.sidebar-content { padding: 0 0.625rem 0.75rem; display: flex; flex-direction: column; min-height: 100%; flex: 1; }

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 0.75rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.sidebar-brand-img {
  height: 1.75rem;
  width: auto;
}

.sidebar-brand-title {
  font-size: 0.9375rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.sidebar-brand-sub {
  font-size: 0.5625rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.sidebar-section { margin-bottom: 1.25rem; }
.sidebar-section:first-child { margin-top: 0; }

.sidebar-label {
  padding: 0.375rem 0.75rem 0.25rem;
  font-size: 0.5625rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.25rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.4375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 6px;
  margin-bottom: 0.0625rem;
  position: relative;
  transition: all 0.15s ease;
}
.sidebar-link:hover { background: var(--accent-light); color: var(--accent); }
.sidebar-link.active {
  background: var(--warning-light);
  color: var(--warning);
  font-weight: 600;
}
.sidebar-link i {
  width: 1.25rem;
  text-align: center;
  font-size: 0.8125rem;
  opacity: 0.6;
  flex-shrink: 0;
}
.sidebar-link:hover i { opacity: 0.9; color: var(--accent); }
.sidebar-link.active i { opacity: 1; color: var(--warning); }

.sidebar-footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.sidebar-logout-btn {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  border: none;
  background: none;
  border-radius: 6px;
  transition: all 0.15s ease;
}
.sidebar-logout-btn:hover { background: rgba(192,57,43,0.08); color: var(--danger); }
.sidebar-logout-btn i { font-size: 0.75rem; }

.sidebar-scrollable { overflow-y: auto; scrollbar-width: thin; }
.sidebar-scrollable::-webkit-scrollbar { width: 3px; }
.sidebar-scrollable::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

/* === SIDEBAR SUBMENU === */
.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.625rem;
  width: 100%;
  padding: 0.425rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
  border: none;
  background: none;
  border-radius: 6px;
  transition: all 0.15s ease;
  cursor: pointer;
  font-family: inherit;
}
.sidebar-toggle:hover { background: var(--accent-light); color: var(--accent); }
.sidebar-toggle i:first-child { width: 1.25rem; text-align: center; font-size: 0.8125rem; opacity: 0.6; flex-shrink: 0; }
.sidebar-toggle:hover i:first-child { opacity: 0.9; color: var(--accent); }
.sidebar-toggle .toggle-arrow { font-size: 0.6rem; opacity: 0.4; transition: transform 0.2s; margin-left: auto; }
.sidebar-toggle.open .toggle-arrow { transform: rotate(90deg); }
.sidebar-submenu { display: none; flex-direction: column; gap: 0.125rem; padding-left: 0.5rem; margin: 0.25rem 0 0.25rem 0.375rem; border-left: 1.5px solid var(--border); }
.sidebar-submenu.open { display: flex; }
.sidebar-submenu .sidebar-link { font-size: 0.7rem; padding: 0.35rem 0.75rem; }

/* === MAIN CONTENT === */
.content-wrapper {
  flex: 1;
  margin-left: 0;
  margin-top: 3.5rem;
  padding: 1rem;
  transition: margin-left 0.3s;
}
@media (min-width: 768px) { .content-wrapper { margin-left: 15rem; padding: 1.5rem; } }

.content-area { max-width: 80rem; margin: 0 auto; }

/* === FOOTER === */
.main-footer {
  margin-left: 0;
  background: var(--surface);
  border-top: 2px solid var(--warning);
  padding: 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-items: center;
  text-align: center;
  font-size: 0.75rem;
}
@media (min-width: 768px) { .main-footer { margin-left: 15rem; flex-direction: row; justify-content: space-between; text-align: left; } }

.footer-brand { color: var(--text-muted); font-weight: 500; }
.footer-brand span { color: var(--accent); font-weight: 700; }
.footer-credit { color: var(--text-muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.625rem; }

/* === PAGE HEADER === */
.page-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--warning-light);
}
@media (min-width: 640px) { .page-header { flex-direction: row; align-items: center; justify-content: space-between; } }

.page-title { font-size: 1.25rem; font-weight: 700; color: var(--text); line-height: 1.2; }
.page-subtitle { font-size: 0.8125rem; color: var(--text-muted); }

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
  line-height: 1.5;
  background: none;
}

.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

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

.btn-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline:hover { background: var(--accent-light); }
html.dark .btn-outline { color: var(--accent); }

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

.btn-danger { background: #dc2626; color: #fff; border-color: #dc2626; }
.btn-danger:hover { background: #b91c1c; border-color: #b91c1c; }
.btn-danger:active { background: #991b1b; }
html.dark .btn-danger { background: #ef4444; border-color: #ef4444; }
html.dark .btn-danger:hover { background: #dc2626; }

.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-success:hover { background: #15803d; border-color: #15803d; }

.btn-sm { padding: 0.25rem 0.625rem; font-size: 0.75rem; }
.btn-lg { padding: 0.625rem 1.25rem; font-size: 0.875rem; }

.action-btn-group { display: flex; gap: 0.375rem; align-items: center; }
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
}
.action-btn:hover { background: var(--accent-light); color: var(--accent); border-color: var(--accent); }
.action-btn i { font-size: 0.75rem; }
.action-btn.danger:hover { background: rgba(192,57,43,0.08); color: var(--danger); border-color: var(--danger); }
.action-btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.action-btn.primary:hover { background: var(--accent-hover); }

.act-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 0.75rem;
  transition: all var(--transition);
}
.act-btn:hover { background: var(--accent-light); color: var(--accent); border-color: var(--accent); }
.act-btn.danger:hover { background: rgba(192,57,43,0.08); color: var(--danger); border-color: var(--danger); }

/* === CARDS / PANELS === */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-header::before {
  content: '';
  display: block;
  width: 3px;
  height: 1rem;
  background: var(--warning);
  border-radius: 2px;
}

.card-body { padding: 1rem; }

/* Stat boxes (dashboard) */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }

.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  border-top: 2px solid var(--accent);
}
.stat-box.orange { border-top-color: var(--warning); }

.stat-box-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

.stat-box-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
}

.stat-box-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  float: right;
  margin-top: -0.5rem;
}
.stat-box-icon.blue { background: var(--accent-light); color: var(--accent); }
.stat-box-icon.orange { background: var(--warning-light); color: var(--warning); }
.stat-box-icon.green { background: rgba(26,140,82,0.1); color: var(--success); }
.stat-box-icon.red { background: rgba(192,57,43,0.1); color: var(--danger); }

/* === TABLES === */
.data-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: visible;
  box-shadow: var(--shadow);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.data-table thead { background: var(--bg); border-bottom: 1px solid var(--border); }

.data-table th {
  padding: 0.625rem 0.875rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.data-table td {
  padding: 0.75rem 0.875rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.data-table tbody tr { transition: background var(--transition); }
.data-table tbody tr:hover { background: var(--warning-light); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: 700;
  border-radius: var(--radius);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-blue { background: var(--accent-light); color: var(--accent); }
.badge-orange { background: var(--warning-light); color: var(--warning); }
.badge-green { background: rgba(26,140,82,0.1); color: var(--success); }
.badge-red { background: rgba(192,57,43,0.1); color: var(--danger); }
.badge-gray { background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }
.badge-group { display: flex; gap: 0.375rem; flex-wrap: wrap; }

/* === FORMS === */
.form-wrap { max-width: 40rem; }

.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; margin-bottom: 1rem; }

.form-group { margin-bottom: 1rem; }

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.form-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
  font-family: inherit;
}
.form-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='%23999'%3E%3Cpath d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.625rem center;
  padding-right: 2rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  margin-top: 1.5rem;
}

.form-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: all var(--transition);
  cursor: pointer;
}
.form-back:hover { background: var(--bg); }

/* === SEARCH === */
.search-row { display: flex; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; align-items: center; }

.search-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  flex: 1;
  min-width: 200px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }
.search-wrap i { color: var(--text-muted); font-size: 0.8125rem; }
.search-wrap input {
  border: none;
  background: none;
  outline: none;
  font-size: 0.8125rem;
  color: var(--text);
  width: 100%;
  font-family: inherit;
}

/* === ALERTS === */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  border-left: 3px solid transparent;
  margin-bottom: 1rem;
}
.alert-info { background: var(--accent-light); color: var(--accent); border-left-color: var(--accent); }
.alert-success { background: rgba(26,140,82,0.08); color: var(--success); border-left-color: var(--success); }
.alert-warning { background: var(--warning-light); color: var(--warning); border-left-color: var(--warning); }
.alert-danger { background: rgba(192,57,43,0.08); color: var(--danger); border-left-color: var(--danger); }

/* === EMPTY STATE === */
.empty-state {
  text-align: center;
  padding: 1.5rem 1rem;
  color: var(--text-muted);
}
.empty-state i { font-size: 1.5rem; margin-bottom: 0.5rem; opacity: 0.3; }
.empty-state p { font-size: 0.875rem; }

/* === LOGIN === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  padding: 1rem;
}

.login-box {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 26rem;
  overflow: hidden;
}

.login-header {
  background: var(--accent);
  padding: 2rem 1.5rem;
  text-align: center;
  border-bottom: 2px solid var(--warning);
}
.login-header i { font-size: 2rem; color: var(--warning); margin-bottom: 0.75rem; }
.login-header h1 { color: #fff; font-size: 1.25rem; font-weight: 800; }
.login-header p { color: rgba(255,255,255,0.7); font-size: 0.8125rem; margin-top: 0.25rem; }

.login-body { padding: 1.5rem; }

.login-field { margin-bottom: 1rem; }
.login-field label { display: block; font-size: 0.8125rem; font-weight: 600; color: var(--text); margin-bottom: 0.25rem; }
.login-field input {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 0.8125rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.login-field input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-light); }

.login-btn {
  width: 100%;
  padding: 0.625rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.login-btn:hover { background: var(--accent-hover); }

.login-footer {
  text-align: center;
  padding: 1rem 1.5rem;
  font-size: 0.6875rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* === PAGINATION === */
.pagination-row { display: flex; justify-content: center; padding: 1rem; }
.pagination { display: flex; gap: 0.25rem; }
.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: all var(--transition);
}
.pagination a:hover { background: var(--accent-light); color: var(--accent); border-color: var(--accent); }
.pagination .current { background: var(--accent); color: #fff; border-color: var(--accent); }

/* === QUICK ACTIONS (dashboard) === */
.quick-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0.75rem; margin-bottom: 1.5rem; }

.quick-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
}
.quick-box:hover { border-color: var(--accent); background: var(--accent-light); }
.quick-box i { font-size: 1rem; color: var(--warning); }

/* === DETAIL VIEW === */
.detail-wrap { max-width: 50rem; }

.detail-header {
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--warning-light);
}

.detail-header h1 { font-size: 1.25rem; font-weight: 700; color: var(--text); }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.detail-row { display: flex; gap: 0.5rem; padding: 0.5rem 0; border-bottom: 1px solid var(--bg); }
.detail-row:last-child { border-bottom: none; }

.detail-row-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  min-width: 8rem;
}

.detail-row-value { font-size: 0.8125rem; color: var(--text); }

/* === COURSE TAG === */
.course-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
}

/* === ROLE BADGES === */
.role-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.125rem 0.5rem;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius);
}
.role-badge-directivo { background: var(--accent-light); color: var(--accent); }
.role-badge-admin { background: var(--warning-light); color: var(--warning); }
.role-badge-preceptor { background: rgba(26,140,82,0.1); color: var(--success); }
.role-badge-docente { background: rgba(99,102,241,0.1); color: #6366f1; }
.role-badge-tutor { background: rgba(168,85,247,0.1); color: #a855f7; }

/* === STAT BOX ANIMATIONS === */
.stat-box {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.stat-box:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}
html.dark .stat-box:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.stat-box-num {
  font-variant-numeric: tabular-nums;
}

/* === CARD HOVER === */
.card {
  transition: border-color 0.2s ease;
}
.card:hover {
  border-color: var(--accent);
}

/* === MOBILE IMPROVEMENTS === */
@media (max-width: 640px) {
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  .stat-row {
    grid-template-columns: 1fr 1fr;
    gap: 0.625rem;
  }
  .stat-box {
    padding: 0.75rem;
  }
  .stat-box-num {
    font-size: 1.25rem;
  }
  .stat-box-icon {
    width: 2rem;
    height: 2rem;
    font-size: 0.8125rem;
  }
  [style*="grid-template-columns: 2fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
  [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 400px) {
  .stat-row {
    grid-template-columns: 1fr;
  }
}

/* === RESPONSIVE TABLES === */
@media (max-width: 768px) {
  .data-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .data-table {
    font-size: 0.75rem;
  }
  .data-table th,
  .data-table td {
    padding: 0.5rem 0.625rem;
    white-space: nowrap;
  }
}

/* === LOADING SHIMMER === */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--bg) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}

/* === MODAL OVERLAY === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  backdrop-filter: blur(4px);
  animation: overlayIn 0.15s ease;
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1.5rem 1.25rem;
  max-width: 26rem;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  animation: modalSlideIn 0.2s ease;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

html.dark .modal-container {
  border-color: #334155;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.modal-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: 1rem;
  background: rgba(192,57,43,0.1);
  color: var(--danger);
}

.modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.375rem;
  line-height: 1.3;
}

.modal-body {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.modal-body strong {
  color: var(--text);
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: 0.625rem;
  justify-content: flex-end;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.modal-actions .btn {
  padding: 0.5rem 1.125rem;
  font-size: 0.8125rem;
  border-radius: 8px;
}

/* === FORM ERROR === */
.form-error {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--danger);
  margin-top: 0.25rem;
}

/* === FORM ACTIONS BAR === */
.form-actions-bar {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  align-items: center;
  padding: 1rem 1.5rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

/* === BREADCRUMBS === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .separator { color: var(--border); font-size: 0.625rem; }
.breadcrumb .current { color: var(--text); font-weight: 600; }

/* === LIST TABLE === */
.list-table {
  width: 100%;
  border-collapse: collapse;
}
.list-table th {
  padding: 0.5rem 0.875rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.list-table th:last-child { text-align: right; }
.list-table td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text);
  vertical-align: middle;
}
.list-table tbody tr { transition: background var(--transition); }
.list-table tbody tr:hover { background: var(--warning-light); }
.list-table tbody tr:last-child td { border-bottom: none; }
.list-table .cell-actions { text-align: right; white-space: nowrap; }
.list-table .cell-center { text-align: center; }

.row-clickable { cursor: pointer; }
.row-clickable:hover { background: var(--warning-light) !important; }

.list-count-bar {
  padding: 0.5rem 1.25rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  gap: 1.25rem;
}
.list-count-bar strong { color: var(--text); }

/* === FORM SECTIONS === */
.form-section { margin-bottom: 1.75rem; }
.form-section-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.form-section-title i { color: var(--warning); width: 1.25rem; text-align: center; }
.form-divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }

/* === KPI / STAT CARDS === */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.875rem;
  margin-bottom: 1.5rem;
}
.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.125rem;
  display: flex;
  align-items: center;
  gap: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.kpi-card:hover { border-color: var(--accent); box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.kpi-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 1rem;
}
.kpi-icon.blue { background: var(--accent-light); color: var(--accent); }
.kpi-icon.orange { background: var(--warning-light); color: var(--warning); }
.kpi-icon.green { background: rgba(26,140,82,0.1); color: var(--success); }
.kpi-icon.red { background: rgba(192,57,43,0.1); color: var(--danger); }
.kpi-num, .kpi-value { font-size: 1.375rem; font-weight: 700; color: var(--text); line-height: 1.2; }
.kpi-label { font-size: 0.6875rem; color: var(--text-muted); font-weight: 500; margin-top: 0.125rem; }

/* === ALERT CARDS === */
.alert-card {
  border-radius: 10px; padding: 0.875rem 1.125rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.alert-card-icon {
  width: 36px; height: 36px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 0.85rem; color: white;
}
.alert-card-body { flex: 1; }
.alert-card-title { font-size: 0.8125rem; font-weight: 600; }
.alert-card-desc { font-size: 0.6875rem; margin-top: 0.125rem; }
.alert-card-action {
  padding: 0.3125rem 0.75rem; border-radius: 6px;
  font-size: 0.6875rem; font-weight: 600;
  color: white; text-decoration: none; white-space: nowrap;
}

/* === DASHBOARD CARDS === */
.dash-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.dash-card-header {
  padding: 0.75rem 1.25rem; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
}
.dash-card-title {
  font-size: 0.6875rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600;
}
.dash-card-body { padding: 1rem 1.25rem; }

/* === QUICK ACTION LINKS === */
.quick-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.quick-link {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.625rem 0.75rem; border: 1px solid var(--border);
  border-radius: 8px; font-size: 0.75rem; font-weight: 600;
  color: var(--text); text-decoration: none; transition: all 0.15s;
}
.quick-link:hover { border-color: var(--warning); background: var(--warning-light); }
.quick-link i { font-size: 0.875rem; }

/* === PAGE CONTAINER / CARD === */
.page-container { max-width: 70rem; margin: 0 auto; padding: 1.5rem; }
.page-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.page-card-header {
  padding: 1rem 1.25rem; border-bottom: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.page-card-breadcrumb { font-size: 0.6875rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 0.25rem; }
.page-card-title { font-size: 1.125rem; font-weight: 600; color: var(--text); }

/* === FILTER BAR === */
.filter-bar { padding: 0.875rem 1.25rem; border-bottom: 1px solid var(--border); }
.filter-form { display: flex; gap: 0.625rem; align-items: flex-end; flex-wrap: wrap; }
.filter-group { display: flex; flex-direction: column; gap: 0.25rem; }
.filter-label {
  font-size: 0.6875rem; font-weight: 600;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em;
}
.filter-input {
  padding: 0.4375rem 0.75rem; border: 1px solid var(--border);
  border-radius: 6px; font-size: 0.8125rem;
  background: var(--surface); color: var(--text); outline: none; font-family: inherit;
  transition: border-color var(--transition);
}
.filter-input:focus { border-color: var(--warning); }
.filter-select {
  padding: 0.4375rem 2rem 0.4375rem 0.75rem; border: 1px solid var(--border);
  border-radius: 6px; font-size: 0.8125rem;
  background: var(--surface); color: var(--text); outline: none;
  appearance: none; cursor: pointer; font-family: inherit;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='%23999'%3E%3Cpath d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.625rem center;
}
.filter-select:focus { border-color: var(--warning); }
.filter-chips {
  padding: 0.5rem 1.25rem; border-bottom: 1px solid var(--border);
  display: flex; gap: 0.375rem; flex-wrap: wrap;
}
.filter-chip {
  padding: 0.25rem 0.75rem; border-radius: 999px;
  font-size: 0.6875rem; font-weight: 600; text-decoration: none; transition: all var(--transition);
}
.filter-chip.active { background: var(--warning); color: white; }
.filter-chip:not(.active) { background: var(--bg); color: var(--text-muted); }
.filter-chip:not(.active):hover { background: var(--warning-light); color: var(--warning); }

/* === LIST GRID (CSS Grid alternative to table) === */
.list-grid-header {
  display: contents;
}
.list-grid-header > div {
  padding: 0.5rem 0.875rem;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.list-grid-row {
  display: contents;
}
.list-grid-row > div {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text);
  vertical-align: middle;
}

/* === WIZARD STEPS === */
.wizard-steps { display: flex; gap: 0; border-bottom: 1px solid var(--border); }
.wizard-step {
  flex: 1; padding: 0.75rem 1rem; text-align: center;
  font-size: 0.75rem; font-weight: 600;
  background: var(--bg); color: var(--text-muted);
  transition: all var(--transition);
}
.wizard-step.active { background: var(--warning); color: #fff; }
.wizard-step i { margin-right: 0.375rem; }

/* === UTILITIES === */
.text-accent { color: var(--accent) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-danger { color: var(--danger) !important; }
.text-success { color: var(--success) !important; }
.text-mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 0.8125rem; }

.bg-accent { background-color: var(--accent) !important; }
.bg-warning { background-color: var(--warning) !important; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.p-4 { padding: 1rem; }

.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.justify-between { justify-content: space-between; }
.title-font { font-family: 'Inter', sans-serif; }