/* Variables globales */
:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --accent-color: #f97316;
    --text-color: #1e293b;
    --light-bg: #f8fafc;
    --border-radius: 12px;
    --box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Estilos generales */
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    background-color: var(--light-bg);
}

/* Navbar mejorado */
.navbar {
    backdrop-filter: blur(10px);
    background-color: var(--primary-color) !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    background-color: white;
    border-radius: 50%;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

.navbar-brand img {
    transition: var(--transition);
    height: 40px;
    width: auto;
}

/* Estilos del menú de navegación */
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
    position: relative;
}

.navbar-dark .navbar-nav .nav-link:hover {
    color: #ffffff !important;
    transform: translateY(-1px);
}

.navbar-dark .navbar-nav .nav-link.active {
    color: #ffffff !important;
    font-weight: 600;
}

.navbar-dark .navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: #ffffff;
    border-radius: 2px;
}

.navbar-dark .navbar-nav .nav-link:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 2px;
}

/* Hero Section mejorado */
.hero-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%232563eb' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.5;
}

/* Estilos de tarjetas mejorados */
.card {
    border-radius: var(--border-radius);
    border: none;
    background: white;
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow);
}

.card-body {
    padding: 2rem;
}

/* Botones mejorados */
.btn {
    border-radius: var(--border-radius);
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    transition: var(--transition);
    text-transform: none;
    letter-spacing: 0.025em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px -1px rgba(37, 99, 235, 0.3);
}

/* Sección de características */
.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Animaciones mejoradas */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Estilos responsivos mejorados */
@media (max-width: 768px) {
    .hero-section {
        padding: 4rem 0;
    }
    
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
    }
}

/* Footer mejorado */
footer {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: white;
    padding: 4rem 0 2rem;
}

footer .logo {
    filter: brightness(0) invert(1);
    opacity: 0.9;
    transition: var(--transition);
}

footer .logo:hover {
    opacity: 1;
    transform: scale(1.05);
}

/* Estilos para la página de entrevista mejorados */
.interview-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.question-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.question-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.recording-controls {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.recording-indicator {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #fb923c);
    animation: pulse 1.5s infinite;
}

/* Ranking mejorado */
.ranking-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.75rem;
}

.ranking-table th {
    background-color: var(--light-bg);
    padding: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
}

.ranking-table td {
    background-color: white;
    padding: 1.25rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.ranking-table tr:hover td {
    transform: scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Badges mejorados */
.badge-level {
    padding: 0.625rem 1.25rem;
    border-radius: 9999px;
    font-weight: 600;
    letter-spacing: 0.025em;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.badge-beginner {
    background: linear-gradient(135deg, #64748b, #94a3b8);
    color: white;
}

.badge-intermediate {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.badge-advanced {
    background: linear-gradient(135deg, #7c3aed, #a855f7);
    color: white;
}

.badge-top-speaker {
    background: linear-gradient(135deg, #eab308, #facc15);
    color: var(--text-color);
}

/* Panel de administración mejorado */
.admin-sidebar {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: white;
    min-height: 100vh;
    padding: 2rem 0;
}

.admin-nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition);
    border-radius: 0.5rem;
    margin: 0.25rem 1rem;
}

.admin-nav-link:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.admin-nav-link.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
} 

/* === Mejoras para la página de administración de usuarios === */

/* Estilo para el buscador */
#searchInput {
    max-width: 300px;
    border-radius: var(--border-radius);
    border: 1px solid #d1d5db;
    transition: var(--transition);
}

#searchInput:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
}

/* Estilo para la tabla de usuarios */
#usuariosList tr {
    transition: var(--transition);
}

#usuariosList tr:hover {
    transform: scale(1.01);
    background-color: #f1f5f9;
}

/* Estilo para tabla dentro de modal */
#modalEntrevistas tr:hover td {
    background-color: #f9fafb;
}

/* Mejora a botones pequeños */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Mejora visual al modal */
.modal-content {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* Tabla de preguntas y entrevistas */
#preguntasList td, #modalEntrevistas td {
    vertical-align: middle;
}

/* Spinner alineado verticalmente */
.spinner-border {
    width: 1.5rem;
    height: 1.5rem;
}

/* Encabezado de sección modal */
.modal-body h6 {
    font-weight: 600;
    margin-top: 1rem;
    color: var(--primary-color);
}