:root {
  --primary: #3b82f6;
  --secondary: #6366f1;
  --accent: #a855f7;
  --bg-dark: #0f172a;
}

body {
  font-family: "Inter", sans-serif;
  background: radial-gradient(circle at top, #1e1b4b 0%, #0f172a 100%);
  color: #f1f5f9;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Efecto de cristal esmerilado para elementos de interfaz */
.glass-card {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-header {
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Contenedor del Logo de la Empresa */
.logo-container img {
  max-height: 48px;
  width: auto;
  object-fit: contain;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.logo-container img:hover {
  transform: scale(1.05);
}

/* --- SISTEMA CORE COVERFLOW 3D --- */
.coverflow-viewport {
  position: relative;
  width: 100%;
  height: 480px;
  overflow: hidden;
  perspective: 1200px; /* Sensación de profundidad 3D */
  display: flex;
  align-items: center;
  justify-content: center;
}

.coverflow-track {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Tarjeta individual del Coverflow */
.student-card {
  position: absolute;
  width: 320px;
  height: 410px;
  border-radius: 1.5rem;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  transition:
    transform 0.6s cubic-bezier(0.25, 1, 0.5, 1),
    opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1),
    filter 0.6s cubic-bezier(0.25, 1, 0.5, 1);
  user-select: none;
  cursor: pointer;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
  overflow: hidden;
}

/* Reflejo brillante de las tarjetas */
.student-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0) 50%
  );
  pointer-events: none;
  z-index: 5;
}

/* Contenedor de imagen de previsualización web */
.card-preview-container {
  position: relative;
  width: 100%;
  height: 55%;
  background-color: #1e293b;
  overflow: hidden;
  border-bottom: 2px solid rgba(255, 255, 255, 0.05);
}

.card-preview-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.student-card:hover .card-preview-image {
  transform: scale(1.08);
}

/* Indicador de posición actual (Puntos activos) */
.dot-indicator {
  transition: all 0.3s ease;
}
.dot-indicator.active {
  background-color: var(--primary);
  width: 1.5rem;
}

/* Estilo personalizado de barra de navegación activa */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}