/* AV Framework v2.0 */
:root{
 --av-surface:var(--av-bg-card);
 --av-surface-hover:var(--av-gray-5);
 --av-border:var(--av-gray-4);
 --av-text:var(--av-black);
 --av-text-muted:var(--av-gray-2);
 --av-btn-primary-bg:var(--av-black);
 --av-btn-primary-text:#fff;
}
.dark-mode{
 --av-surface:#1c1c1e;
 --av-surface-hover:#2c2c2e;
 --av-border:#3a3a3c;
 --av-text:#f5f5f7;
 --av-text-muted:#aeaeb2;
 --av-btn-primary-bg:#fff;
 --av-btn-primary-text:#111;
}
.av-btn-primary{background:var(--av-btn-primary-bg)!important;color:var(--av-btn-primary-text)!important}
.av-card,.av-auth-card,.av-sidebar,.av-stat-card,.av-diploma{background:var(--av-surface)!important;border-color:var(--av-border)!important}
.av-table th,.av-table tr:hover td{background:var(--av-surface-hover)}

/* ============================================================
   AULA VIRTUAL — Hoja de estilos principal
   Diseño blanco Pablo Jara Vargas :p
   ============================================================ */

:root {
  --av-white:      #ffffff;
  --av-bg:         #f5f5f7;
  --av-bg-card:    #ffffff;
  --av-black:      #1d1d1f;
  --av-gray-1:     #3a3a3c;
  --av-gray-2:     #6e6e73;
  --av-gray-3:     #aeaeb2;
  --av-gray-4:     #e5e5ea;
  --av-gray-5:     #f5f5f7;
  --av-accent:     #0071e3;
  --av-accent-h:   #0077ed;
  --av-success:    #34c759;
  --av-warning:    #ff9f0a;
  --av-danger:     #ff3b30;
  --av-radius:     14px;
  --av-radius-sm:  8px;
  --av-radius-lg:  20px;
  --av-shadow:     0 2px 20px rgba(0,0,0,.06);
  --av-shadow-md:  0 8px 40px rgba(0,0,0,.10);
  --av-font:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --av-navbar-h:   64px;
}

/* Base */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  font-family: var(--av-font);
  background: var(--av-bg);
  color: var(--av-black);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Navbar ── */
.av-navbar {
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid rgba(0,0,0,.08);
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  min-height: var(--av-navbar-h);
  padding: 0;
  /* NO backdrop-filter: crea un stacking context que atrapa el dropdown */
}
.av-navbar-spacer { height: var(--av-navbar-h); }

.av-navbar .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  min-height: var(--av-navbar-h);
  padding-top: 8px;
  padding-bottom: 8px;
}

.av-navbar .navbar-brand {
  font-weight: 600;
  font-size: 17px;
  color: var(--av-black);
  letter-spacing: -.3px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.av-logo-mark {
  width: 28px; height: 28px;
  background: var(--av-black);
  border-radius: 7px;
  display: inline-block;
  flex-shrink: 0;
}
.av-navbar .nav-link {
  color: var(--av-gray-1);
  font-size: 14px;
  font-weight: 450;
  padding: 8px 14px;
  border-radius: 8px;
  transition: background .15s, color .15s;
}
.av-navbar .nav-link:hover { background: var(--av-gray-4); color: var(--av-black); }

.av-navbar .navbar-toggler {
  border: none;
  padding: 4px 8px;
  box-shadow: none !important;
}
.av-navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(29, 29, 31, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  width: 22px;
  height: 22px;
}

/* Mobile: menú colapsable apilado, sin desbordar la pantalla */
@media (max-width: 991.98px) {
  .av-navbar .navbar-collapse {
    width: 100%;
    padding: 12px 0 16px;
    border-top: 1px solid var(--av-gray-4);
    margin-top: 8px;
  }
  .av-navbar .navbar-nav {
    width: 100%;
  }
  .av-navbar .nav-item {
    width: 100%;
  }
  .av-navbar .nav-link {
    padding: 12px 8px;
    width: 100%;
  }
  .av-navbar .nav-item.dropdown {
    width: 100%;
  }
  .av-navbar .dropdown-menu {
    position: static !important;
    width: 100%;
    box-shadow: none;
    border: 1px solid var(--av-gray-4);
    margin-top: 4px;
    transform: none !important;
  }
  .av-navbar .ms-2 {
    margin-left: 0 !important;
    margin-top: 8px;
    display: block;
    width: 100%;
    text-align: center;
  }
}

/* ── Buttons ── */
.av-btn-primary {
  background: var(--av-black);
  color: #fff;
  border: none;
  border-radius: 100px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 500;
  transition: background .2s, transform .1s;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}
.av-btn-primary:hover { background: #3a3a3c; color: #fff; transform: translateY(-1px); }

.av-btn-accent {
  background: var(--av-accent);
  color: #fff;
  border: none;
  border-radius: 100px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 500;
  transition: background .2s;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}
.av-btn-accent:hover { background: var(--av-accent-h); color: #fff; }

.av-btn-outline {
  background: transparent;
  color: var(--av-accent);
  border: 1.5px solid var(--av-accent);
  border-radius: 100px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 500;
  transition: all .2s;
  cursor: pointer;
  display: inline-block;
  text-decoration: none;
}
.av-btn-outline:hover { background: var(--av-accent); color: #fff; }

/* ── Cards ── */
.av-card {
  background: var(--av-bg-card);
  border-radius: var(--av-radius);
  box-shadow: var(--av-shadow);
  border: 1px solid var(--av-gray-4);
  overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}
.av-card:hover { box-shadow: var(--av-shadow-md); transform: translateY(-2px); }

.av-card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; background: var(--av-gray-5); }

.av-card-body { padding: 20px; }

.av-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--av-gray-5);
  border-radius: 100px;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--av-gray-2);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.av-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--av-black);
  margin: 10px 0 6px;
  line-height: 1.35;
}
.av-card-desc { font-size: 13px; color: var(--av-gray-2); line-height: 1.5; }
.av-card-price { font-size: 18px; font-weight: 700; color: var(--av-black); }
.av-card-price-old { font-size: 13px; color: var(--av-gray-3); text-decoration: line-through; }

/* ── Avatar ── */
.av-avatar-sm {
  width: 30px; height: 30px;
  background: var(--av-black);
  color: #fff;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.av-avatar-lg {
  width: 64px; height: 64px;
  background: var(--av-black);
  color: #fff;
  border-radius: 50%;
  font-size: 24px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Hero (Actualizado para Imagen de Fondo) ── */
.av-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 100px 0; /* Un poco más de espacio arriba y abajo da un look más premium */
  text-align: left; /* Bootstrap se encargará de centrarlo en móvil con text-center */
  overflow: hidden;
}

/* Forzamos que todo el texto dentro del contenedor del Hero sea blanco */
.av-hero .container {
  color: #ffffff;
}

.av-hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--av-accent); /* Mantiene tu color de acento (ej: amarillo o azul claro) */
  margin-bottom: 16px;
}

.av-hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: #ffffff; /* CAMBIO: Ahora es blanco para que resalte sobre el fondo oscuro */
  letter-spacing: -.5px;
  line-height: 1.15;
  margin-bottom: 20px;
}

.av-hero-sub {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.85); /* CAMBIO: Blanco semitransparente, excelente para la lectura */
  max-width: 540px;
  margin-bottom: 32px;
  line-height: 1.6;
}

/* Corrección para dispositivos móviles */
@media (max-width: 991.98px) {
  .av-hero {
    text-align: center; /* Centra el texto automáticamente en tablets y celulares */
    padding: 70px 0;
  }
}

/* ── Sections ── */
.av-section { padding: 60px 0; }
.av-section-title { font-size: 28px; font-weight: 700; letter-spacing: -.3px; margin-bottom: 6px; }
.av-section-sub { font-size: 15px; color: var(--av-gray-2); margin-bottom: 32px; }

/* ── Progress ── */
.av-progress-wrap { background: var(--av-gray-4); border-radius: 100px; height: 6px; overflow: hidden; }
.av-progress-bar  { height: 100%; border-radius: 100px; background: var(--av-accent); transition: width .4s; }

/* ── Sidebar dashboard ── */
.av-sidebar {
  background: var(--av-white);
  border-radius: var(--av-radius);
  border: 1px solid var(--av-gray-4);
  padding: 24px 0;
  box-shadow: var(--av-shadow);
  position: sticky;
  top: calc(var(--av-navbar-h) + 24px);
}
.av-sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 450;
  color: var(--av-gray-1);
  text-decoration: none;
  border-radius: 0;
  transition: background .15s, color .15s;
  border-left: 3px solid transparent;
}
.av-sidebar-link:hover { background: var(--av-gray-5); color: var(--av-black); }
.av-sidebar-link.active {
  background: var(--av-gray-5);
  color: var(--av-black);
  font-weight: 600;
  border-left-color: var(--av-accent);
}
.av-sidebar-link i { font-size: 16px; }

/* ── Stats ── */
.av-stat-card {
  background: var(--av-white);
  border-radius: var(--av-radius);
  border: 1px solid var(--av-gray-4);
  padding: 24px;
  box-shadow: var(--av-shadow);
}
.av-stat-number { font-size: 32px; font-weight: 700; color: var(--av-black); letter-spacing: -.5px; }
.av-stat-label  { font-size: 13px; color: var(--av-gray-2); margin-top: 4px; }

/* ── Forms ── */
.av-form-label { font-size: 13px; font-weight: 500; color: var(--av-gray-1); margin-bottom: 6px; }
.av-form-control {
  background: var(--av-white);
  border: 1.5px solid var(--av-gray-4);
  border-radius: var(--av-radius-sm);
  padding: 10px 14px;
  font-size: 14px;
  color: var(--av-black);
  width: 100%;
  transition: border-color .2s, box-shadow .2s;
  font-family: var(--av-font);
}
.av-form-control:focus {
  outline: none;
  border-color: var(--av-accent);
  box-shadow: 0 0 0 3px rgba(0,113,227,.15);
}
.av-form-control::placeholder { color: var(--av-gray-3); }

/* ── Diploma ── */
.av-diploma {
  background: #fff;
  border: 2px solid var(--av-gray-4);
  border-radius: 20px;
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.av-diploma::before {
  content: '';
  position: absolute;
  inset: 8px;
  border: 1px solid var(--av-gray-4);
  border-radius: 14px;
  pointer-events: none;
}
.av-diploma-seal { font-size: 64px; margin-bottom: 16px; }
.av-diploma-title { font-size: 13px; letter-spacing: 2px; text-transform: uppercase; color: var(--av-gray-3); margin-bottom: 8px; }
.av-diploma-name  { font-size: 28px; font-weight: 700; color: var(--av-black); }
.av-diploma-curso { font-size: 17px; color: var(--av-gray-1); margin: 12px 0; }
.av-diploma-code  { font-size: 11px; letter-spacing: 3px; color: var(--av-gray-3); font-family: monospace; }

/* ── Alerts ── */
.av-alert {
  border-radius: var(--av-radius-sm);
  padding: 14px 18px;
  font-size: 14px;
  border: none;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.av-alert-success { background: #d1fae5; color: #065f46; }
.av-alert-error   { background: #fee2e2; color: #991b1b; }
.av-alert-info    { background: #dbeafe; color: #1e40af; }

/* ── Dropdown ── */
.av-dropdown {
  border: 1px solid var(--av-gray-4);
  border-radius: var(--av-radius-sm);
  box-shadow: var(--av-shadow-md);
  padding: 6px;
  min-width: 180px;
  z-index: 1100 !important;
  position: absolute !important;
}
.av-dropdown .dropdown-item {
  border-radius: 8px;
  font-size: 14px;
  padding: 8px 12px;
}

/* Asegurar que el dropdown del navbar siempre quede sobre todo */
.av-navbar .dropdown-menu {
  z-index: 1100 !important;
}
.av-navbar .dropdown {
  position: static;
}
.av-navbar .nav-item.dropdown {
  position: relative;
}

/* ── Login/Registro ── */
.av-auth-wrap {
  min-height: calc(100vh - var(--av-navbar-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
}
.av-auth-card {
  background: var(--av-white);
  border-radius: var(--av-radius-lg);
  box-shadow: var(--av-shadow-md);
  border: 1px solid var(--av-gray-4);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}
.av-auth-logo { text-align: center; margin-bottom: 28px; }
.av-auth-title { font-size: 22px; font-weight: 700; text-align: center; margin-bottom: 6px; }
.av-auth-sub   { font-size: 14px; color: var(--av-gray-2); text-align: center; margin-bottom: 28px; }

/* ── Table ── */
.av-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.av-table th { font-weight: 600; font-size: 12px; letter-spacing: .5px; text-transform: uppercase; color: var(--av-gray-2); padding: 12px 16px; border-bottom: 1.5px solid var(--av-gray-4); background: var(--av-gray-5); }
.av-table td { padding: 14px 16px; border-bottom: 1px solid var(--av-gray-4); color: var(--av-gray-1); vertical-align: middle; }
.av-table tr:last-child td { border-bottom: none; }
.av-table tr:hover td { background: var(--av-gray-5); }

/* ── Badges ── */
.av-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.av-badge-green   { background: #d1fae5; color: #065f46; }
.av-badge-blue    { background: #dbeafe; color: #1e40af; }
.av-badge-yellow  { background: #fef9c3; color: #854d0e; }
.av-badge-red     { background: #fee2e2; color: #991b1b; }
.av-badge-gray    { background: var(--av-gray-4); color: var(--av-gray-2); }

/* ── Lección texto ── */
.av-lesson-text {
  font-size: 15px !important;
  line-height: 1.8 !important;
  color: var(--av-gray-1) !important;
  white-space: pre-line;
  word-wrap: break-word;
}
.av-lesson-text p { margin-bottom: 1em; color: inherit; }

/* ── Video ── */
.av-video-wrap { position: relative; padding-top: 56.25%; background: #000; border-radius: var(--av-radius); overflow: hidden; }
.av-video-wrap iframe,
.av-video-wrap video { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }

/* ── Lección lista ── */
.av-lesson-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--av-radius-sm);
  cursor: pointer;
  transition: background .15s;
  text-decoration: none;
  color: var(--av-gray-1);
}
.av-lesson-item:hover { background: var(--av-gray-5); }
.av-lesson-item.active { background: #dbeafe; color: var(--av-accent); font-weight: 500; }
.av-lesson-icon { width: 32px; height: 32px; background: var(--av-gray-4); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 14px; flex-shrink: 0; }
.av-lesson-item.done .av-lesson-icon { background: #d1fae5; color: #065f46; }

/* ── Footer ── */
.av-footer {
  background: var(--av-black);
  color: var(--av-gray-3);
  padding: 32px 0;
  margin-top: auto;
  font-size: 13px;
}
.av-footer-brand { font-weight: 600; color: var(--av-white); margin-right: 16px; }
.av-footer-copy  { color: var(--av-gray-3); }
.av-footer-link  { color: var(--av-gray-3); text-decoration: none; margin-left: 20px; transition: color .15s; }
.av-footer-link:hover { color: var(--av-white); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .av-hero { padding: 48px 0 36px; }
  .av-auth-card { padding: 28px 20px; }
  .av-diploma { padding: 28px 20px; }
  .av-sidebar { position: static; }
}

/* ── Modo oscuro ── */
.dark-mode {
  --av-white:    #1c1c1e;
  --av-bg:       #000000;
  --av-bg-card:  #1c1c1e;
  --av-black:    #f5f5f7;
  --av-gray-1:   #e5e5ea;
  --av-gray-2:   #aeaeb2;
  --av-gray-3:   #6e6e73;
  --av-gray-4:   #3a3a3c;
  --av-gray-5:   #2c2c2e;
}
.dark-mode .av-navbar {
  background: rgba(28,28,30,.97);
  border-bottom-color: rgba(255,255,255,.08);
}
.dark-mode .av-card { border-color: var(--av-gray-4); }
.dark-mode .av-form-control { background: var(--av-gray-5); color: var(--av-gray-1); border-color: var(--av-gray-4); }
.dark-mode .av-form-control::placeholder { color: var(--av-gray-3); }
.dark-mode .av-sidebar { background: var(--av-bg-card); border-color: var(--av-gray-4); }
.dark-mode .av-footer { background: #000; }
.dark-mode .av-auth-card { background: var(--av-bg-card); }
.dark-mode .av-diploma { background: var(--av-bg-card); }
.dark-mode .editor-area { background: var(--av-gray-5); color: var(--av-gray-1); }
.dark-mode .editor-toolbar { background: var(--av-gray-4); }