/* ============================================================
   BIENVENIDA.CSS — Página de bienvenida con carrusel de cursos
   ============================================================ */

/* ── Cuerpo ── */
.bienvenida-body {
  background: var(--color-bg-dark);
  min-height: 100vh;
}

/* ── NAVBAR ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem var(--spacing-xl);
  background: rgba(26, 10, 46, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(200 155 60 / 0.25);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}
.nav-logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(200 155 60 / 0.4));
}
.nav-brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-subtitle {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.nav-name {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.4rem);
  font-weight: 900;
  color: #fff;
  letter-spacing: 0.05em;
  line-height: 1;
  white-space: nowrap;
  text-shadow: 0 2px 12px rgba(0 0 0 / 0.4);
}
.nav-divider {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
}
.nav-divider-line {
  flex: 1;
  height: 1.5px;
}
.nav-divider-line:first-child {
  background: linear-gradient(90deg, transparent, var(--color-accent));
}
.nav-divider-line:last-child {
  background: linear-gradient(90deg, var(--color-accent), transparent);
}
.nav-divider-dot {
  font-size: 0.45rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  position: absolute;
  left: 50%;
  transform: translateX(-50%) translateY(25px);
}
.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-decoration: none;
  position: relative;
  transition: color var(--transition-normal);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition-normal);
}
.nav-link:hover {
  color: var(--color-accent-light);
}
.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}
.nav-welcome-text {
  font-size: 0.9rem;
  color: var(--color-accent-light);
  font-weight: 500;
}

.btn-logout {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem var(--spacing-md);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid rgba(255 255 255 / 0.2);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition-normal);
}
.btn-logout:hover {
  background: rgba(255 107 107 / 0.15);
  border-color: var(--color-error);
  color: var(--color-error);
}

/* ── BANNER DE BIENVENIDA ── */
.welcome-banner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-bg-mid) 100%);
  overflow: hidden;
  min-height: 220px;
}

.banner-content { position: relative; z-index: 1; }

.banner-label {
  font-size: 0.9rem;
  color: var(--color-accent-light);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-xs);
}
.banner-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0 0 0 / 0.3);
  margin-bottom: var(--spacing-xs);
}
.banner-sub {
  color: var(--color-text-muted);
  font-size: 1rem;
}

.banner-decoration {
  position: relative;
  z-index: 1;
  opacity: 0.15;
}
.banner-logo-deco {
  width: 160px;
  height: 160px;
  object-fit: contain;
  filter: brightness(2);
}

/* ── SECCIÓN CURSOS ── */
.courses-section {
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}
.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--spacing-xs);
}
.section-sub {
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* ── CARRUSEL ── */
.carousel-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.carousel-track-container {
  overflow: hidden;
  flex: 1;
  border-radius: var(--radius-md);
}

.carousel-track {
  display: flex;
  gap: var(--spacing-lg);
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Tarjeta de curso ── */
.course-card {
  min-width: 280px;
  flex-shrink: 0;
  background: rgba(255 255 255 / 0.05);
  border: 1px solid rgba(255 255 255 / 0.1);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  position: relative;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  cursor: pointer;
}
.course-card:hover {
  transform: translateY(-6px);
  border-color: rgba(200 155 60 / 0.5);
  box-shadow: 0 12px 32px rgba(0 0 0 / 0.4), 0 0 0 1px rgba(200 155 60 / 0.2);
}

.card-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  padding: 3px 10px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.card-badge.popular {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-bg-dark);
}

.card-icon {
  font-size: 2.4rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

.card-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--spacing-sm);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}
.meta-item {
  font-size: 0.78rem;
  color: var(--color-accent-light);
  background: rgba(200 155 60 / 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.card-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin-bottom: var(--spacing-md);
}
.card-price .price-period {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.btn-card {
  display: block;
  text-align: center;
  padding: 0.6rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  transition: background var(--transition-normal);
  border: none;
  cursor: pointer;
  width: 100%;
}
.btn-card:hover { background: var(--color-primary-light); }

/* ── Botones del carrusel ── */
.carousel-btn {
  width: 46px;
  height: 46px;
  background: rgba(255 255 255 / 0.08);
  border: 1px solid rgba(255 255 255 / 0.15);
  border-radius: 50%;
  color: #fff;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-normal);
  line-height: 1;
}
.carousel-btn:hover {
  background: var(--color-primary);
  border-color: var(--color-primary-light);
}
.carousel-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ── Puntos indicadores ── */
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: var(--spacing-lg);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255 255 255 / 0.25);
  cursor: pointer;
  transition: all var(--transition-normal);
}
.dot.active {
  background: var(--color-accent);
  width: 24px;
  border-radius: var(--radius-full);
}

/* ── Separador de sección ── */
.section-divider {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  margin-top: var(--spacing-lg);
}
.section-divider-line {
  flex: 1;
  height: 2px;
}
.section-divider-line:first-child {
  background: linear-gradient(90deg, transparent, var(--color-accent));
}
.section-divider-line:last-child {
  background: linear-gradient(90deg, var(--color-accent), transparent);
}
.section-divider-dot {
  font-size: 0.6rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ── Barra de búsqueda ── */
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.search-input {
  flex: 1;
  padding: 0.6rem var(--spacing-md);
  background: rgba(255 255 255 / 0.07);
  border: 1px solid rgba(255 255 255 / 0.2);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-normal), background var(--transition-normal);
}
.search-input::placeholder {
  color: rgba(255 255 255 / 0.35);
}
.search-input:focus {
  border-color: var(--color-accent);
  background: rgba(255 255 255 / 0.1);
}

.btn-search {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.6rem var(--spacing-md);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--transition-normal);
  white-space: nowrap;
}
.btn-search:hover {
  background: var(--color-primary-light);
}

/* ── Grid de recuadros de cursos ── */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.course-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-md);
  padding: 0;
  background: rgba(255 255 255 / 0.05);
  border: 1px solid rgba(255 255 255 / 0.12);
  border-radius: var(--radius-md);
  min-height: 400px;
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}
.course-box:hover {
  border-color: rgba(200 155 60 / 0.5);
  box-shadow: 0 8px 24px rgba(0 0 0 / 0.3);
}

.course-box-img {
  width: 100%;
  flex: 1;
  min-height: 0;
  object-fit: cover;
  display: none;
  align-self: stretch;
}
.course-box-img.visible {
  display: block;
}

.course-box-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  padding: var(--spacing-md) var(--spacing-xl) 0;
  min-height: 2.8rem;
  text-align: center;
  line-height: 1.3;
  order: -1;
}

.card-actions {
  display: flex;
  gap: var(--spacing-sm);
  width: 100%;
  padding: 0 var(--spacing-xl) var(--spacing-xl);
  margin-top: auto;
}

.btn-temario {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0.45rem 0.5rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background var(--transition-normal), transform var(--transition-fast);
  white-space: nowrap;
}
.btn-temario:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-comprar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0.45rem 0.5rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-bg-dark);
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: opacity var(--transition-normal), transform var(--transition-fast);
  white-space: nowrap;
}
.btn-comprar:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

@media (max-width: 900px) {
  .courses-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 500px) {
  .courses-grid { grid-template-columns: 1fr; }
}

/* ── ESTADÍSTICAS ── */
.stats-section {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl) var(--spacing-xl);
  background: linear-gradient(90deg, var(--color-bg-mid) 0%, var(--color-primary-dark) 100%);
  border-top: 1px solid rgba(200 155 60 / 0.15);
  border-bottom: 1px solid rgba(200 155 60 / 0.15);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--color-accent-light);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
}
.stat-divider {
  width: 1px;
  height: 60px;
  background: rgba(255 255 255 / 0.12);
}

/* ── FOOTER ── */
.footer {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid rgba(255 255 255 / 0.08);
}

/* ── Menú hamburguesa ── */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid rgba(255 255 255 / 0.2);
  border-radius: var(--radius-sm);
  padding: 6px;
  cursor: pointer;
  z-index: 200;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition-normal);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Menú desplegable móvil */
.nav-mobile-menu {
  display: none !important;
  flex-direction: column;
  gap: 0;
  width: 100%;
  background: rgba(26, 10, 46, 0.98);
  border-bottom: 1px solid rgba(200 155 60 / 0.25);
  padding: var(--spacing-md) var(--spacing-lg);
  z-index: 150;
}
@media (max-width: 768px) {
  .nav-mobile-menu.open { display: flex !important; }
}
.nav-mobile-menu .nav-link {
  padding: 1rem var(--spacing-md);
  border-bottom: 1px solid rgba(255 255 255 / 0.08);
  font-size: 1rem;
  display: block;
}
.nav-mobile-menu .nav-link:last-child { border-bottom: none; }

/* Botón iniciar sesión en navbar */
.btn-login-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem var(--spacing-md);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-normal);
}
.btn-login-nav:hover { background: var(--color-primary-light); }

/* En pantallas grandes: ocultar hamburguesa, mostrar nav-menu */
@media (min-width: 769px) {
  .hamburger { display: none !important; }
  .nav-menu { display: flex !important; }
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .navbar { padding: 0.9rem var(--spacing-md); }
  .nav-logo { width: 60px; height: 60px; }
  .nav-name { font-size: clamp(1.1rem, 3vw, 1.8rem); }
  .courses-section { padding: var(--spacing-xl) var(--spacing-md); }
}
@media (max-width: 768px) {
  .welcome-banner { flex-direction: column; padding: var(--spacing-xl) var(--spacing-md); }
  .banner-decoration { display: none; }
  .course-card { min-width: 250px; }
  .stat-divider { display: none; }
  .stats-section { gap: var(--spacing-xl); padding: var(--spacing-xl) var(--spacing-md); }
  .nav-menu { display: none !important; }
  .hamburger { display: flex !important; visibility: visible !important; }
  .navbar { position: relative; flex-wrap: nowrap; }
  .nav-actions { flex-shrink: 0; gap: var(--spacing-sm); }
  .course-box { min-height: auto; }
  .course-box-img { height: auto; }
  .search-bar { flex-direction: column; align-items: stretch; }
}
@media (max-width: 500px) {
  .navbar { padding: 0.7rem var(--spacing-sm); gap: var(--spacing-sm); }
  .nav-logo { width: 48px; height: 48px; }
  .nav-name { font-size: 1rem; }
  .nav-subtitle { display: none; }
  .nav-divider { display: none; }
  .nav-welcome-text { font-size: 0.78rem; max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .btn-logout { font-size: 0.78rem; padding: 0.4rem 0.6rem; }
  .course-box { padding: var(--spacing-md); gap: var(--spacing-md); min-height: 320px; }
  .course-box-img { height: auto; }
  .courses-grid { gap: var(--spacing-md); }
  .btn-login-nav { font-size: 0.78rem; padding: 0.4rem 0.6rem; }
}