/* =====================================================
   Tema: Glassmorfismo alegre y moderno
   ===================================================== */

:root {
    --brand-azul: #4338CA;      /* índigo vibrante */
    --brand-azul-claro: #6366F1;
    --brand-violeta: #8B5CF6;
    --brand-rosa: #EC4899;
    --brand-verde: #10B981;
    --brand-verde-oscuro: #047857;
    --brand-rojo: #EF4444;
    --brand-naranja: #F59E0B;
    --brand-cian: #06B6D4;

    --bs-primary: var(--brand-azul-claro);
    --bs-primary-rgb: 99, 102, 241;

    --vidrio-fondo: rgba(255, 255, 255, 0.55);
    --vidrio-borde: rgba(255, 255, 255, 0.6);
    --vidrio-sombra: 0 8px 32px rgba(67, 56, 202, 0.15);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    font-family: 'Inter', -apple-system, Segoe UI, Arial, sans-serif;
    color: #2b2660;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    background: linear-gradient(160deg, #eef2ff 0%, #fdf2f8 45%, #ecfeff 100%);
}

h1, h2, h3, h4, h5 {
    font-family: 'Poppins', 'Inter', sans-serif;
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* --- Fondo decorativo con manchas de color difuminadas --- */
body::before, body::after {
    content: "";
    position: fixed;
    z-index: -1;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.55;
    animation: flotar 18s ease-in-out infinite;
}
body::before {
    width: 480px; height: 480px;
    top: -120px; left: -140px;
    background: radial-gradient(circle at 30% 30%, var(--brand-violeta), var(--brand-azul-claro));
}
body::after {
    width: 520px; height: 520px;
    bottom: -160px; right: -160px;
    background: radial-gradient(circle at 60% 60%, var(--brand-rosa), var(--brand-naranja));
    animation-delay: -9s;
}
@keyframes flotar {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.08); }
}

/* --- Navbar de vidrio --- */
.brand-navbar {
    background: rgba(255, 255, 255, 0.35) !important;
    backdrop-filter: blur(18px) saturate(180%);
    -webkit-backdrop-filter: blur(18px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 4px 24px rgba(67, 56, 202, 0.08);
}
.brand-navbar .navbar-brand,
.brand-navbar .nav-link,
.brand-navbar .navbar-toggler-icon {
    color: #322d74 !important;
}
.brand-navbar .navbar-brand i { color: var(--brand-violeta); }
.brand-text {
    background: linear-gradient(135deg, var(--brand-azul), var(--brand-violeta), var(--brand-rosa));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.brand-navbar .nav-link { font-weight: 600; border-radius: 10px; padding: 8px 12px !important; transition: .2s; }
.brand-navbar .nav-link:hover { background: rgba(255,255,255,0.5); color: var(--brand-azul) !important; }
.brand-navbar .btn-outline-light {
    color: #322d74; border-color: rgba(50,45,116,0.4);
}
.brand-navbar .btn-outline-light:hover { background: #322d74; color: #fff; border-color: #322d74; }
.brand-navbar .text-white,
.brand-navbar .text-white-50 { color: #322d74 !important; opacity: .85; }

/* --- Tarjetas de vidrio --- */
.card {
    border: 1px solid var(--vidrio-borde);
    border-radius: 22px;
    background: var(--vidrio-fondo);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    box-shadow: var(--vidrio-sombra);
    transition: transform .2s ease, box-shadow .2s ease;
}
a.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 34px rgba(67, 56, 202, 0.22);
}
.card-header {
    background: transparent;
    border-bottom: 1px solid rgba(255,255,255,0.6);
    font-weight: 700;
    color: var(--brand-azul);
    border-radius: 22px 22px 0 0 !important;
}

/* --- Botones tipo píldora --- */
.btn { border-radius: 50px; font-weight: 700; padding: 10px 22px; border: none; }
.btn-primary {
    background: linear-gradient(135deg, var(--brand-azul-claro), var(--brand-violeta));
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--brand-violeta), var(--brand-azul-claro));
    transform: translateY(-1px);
}
.btn-success {
    background: linear-gradient(135deg, var(--brand-verde), var(--brand-cian));
    box-shadow: 0 6px 18px rgba(16, 185, 129, 0.35);
}
.btn-success:hover { transform: translateY(-1px); background: linear-gradient(135deg, var(--brand-cian), var(--brand-verde)); }
.btn-outline-primary {
    color: var(--brand-azul); border: 2px solid var(--brand-azul-claro); background: rgba(255,255,255,0.4);
}
.btn-outline-primary:hover { background: var(--brand-azul-claro); color: #fff; }
.btn-outline-secondary { border: 2px solid rgba(67,56,202,0.25); color: var(--brand-azul); background: rgba(255,255,255,0.4); border-radius: 50px; }
.btn-outline-secondary:hover { background: rgba(67,56,202,0.1); color: var(--brand-azul); }
.btn-outline-danger { border-radius: 50px; }

/* --- Hero / portada --- */
.hero-panel {
    background: linear-gradient(120deg, var(--brand-violeta), var(--brand-azul-claro) 55%, var(--brand-cian));
    color: #fff;
    border-radius: 28px;
    box-shadow: 0 20px 45px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}
.hero-panel::after {
    content: "";
    position: absolute; inset: 0;
    background: radial-gradient(circle at 85% 15%, rgba(255,255,255,0.25), transparent 55%);
}

.icono-circulo {
    width: 68px; height: 68px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,0.22);
    backdrop-filter: blur(6px);
    font-size: 30px;
}
.icono-circulo-claro {
    background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(236,72,153,0.15));
    color: var(--brand-violeta);
    border: 1px solid rgba(99,102,241,0.2);
}

/* --- Tarjetas de estadísticas --- */
.stat-card {
    border-radius: 20px;
    padding: 24px 26px;
    color: #fff;
    background: linear-gradient(135deg, var(--brand-azul), var(--brand-violeta));
    box-shadow: 0 12px 28px rgba(67, 56, 202, 0.28);
    border: 1px solid rgba(255,255,255,0.25);
}
.stat-card.verde { background: linear-gradient(135deg, var(--brand-verde-oscuro), var(--brand-verde)); box-shadow: 0 12px 28px rgba(16,185,129,0.28); }
.stat-card.gris { background: linear-gradient(135deg, #db2777, var(--brand-naranja)); box-shadow: 0 12px 28px rgba(219,39,119,0.28); }
.stat-card h6 { text-transform: uppercase; letter-spacing: .06em; font-size: .72rem; opacity: .9; margin-bottom: 6px; }
.stat-card .valor { font-size: 2.2rem; font-weight: 800; line-height: 1; font-family: 'Poppins', sans-serif; }

/* --- Código de acceso --- */
.codigo-acceso {
    font-family: 'Courier New', monospace;
    letter-spacing: 4px;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--brand-azul);
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(236,72,153,0.12));
    padding: 8px 22px;
    border-radius: 50px;
    border: 2px dashed var(--brand-violeta);
    display: inline-block;
}

/* --- Preguntas --- */
.pregunta-card {
    border-left: 5px solid var(--brand-azul-claro);
    border-radius: 18px;
}
.opcion-radio {
    border: 1px solid rgba(99,102,241,0.15);
    background: rgba(255,255,255,0.45);
    border-radius: 14px;
    padding: 13px 18px;
    cursor: pointer;
    transition: .18s ease;
    display: block;
    margin-bottom: 10px;
}
.opcion-radio:hover { background: rgba(99,102,241,0.12); border-color: var(--brand-azul-claro); transform: translateX(2px); }
.form-check-input:checked ~ .form-check-label,
.opcion-radio:has(input:checked) { font-weight: 700; color: var(--brand-azul); }
.opcion-radio:has(input:checked) { background: rgba(99,102,241,0.16); border-color: var(--brand-azul-claro); }
.opcion-radio.correcta { background: rgba(16,185,129,0.18); border-color: var(--brand-verde); }
.opcion-radio.incorrecta { background: rgba(239,68,68,0.15); border-color: var(--brand-rojo); }

/* --- Cronómetro --- */
.cronometro-flotante {
    position: sticky;
    top: 84px;
    z-index: 15;
    background: linear-gradient(135deg, var(--brand-azul), var(--brand-violeta));
    color: #fff;
    text-align: center;
    padding: 14px;
    border-radius: 18px;
    font-size: 1.3rem;
    font-weight: 800;
    box-shadow: 0 10px 26px rgba(67,56,202,0.32);
    border: 1px solid rgba(255,255,255,0.3);
}
.cronometro-flotante.alerta-tiempo {
    background: linear-gradient(135deg, var(--brand-rojo), var(--brand-naranja));
    animation: pulso 1s infinite;
}
@keyframes pulso { 0%{opacity:1;} 50%{opacity:.7;} 100%{opacity:1;} }

/* --- Resultado circular --- */
.resultado-circulo {
    width: 180px; height: 180px;
    border-radius: 50%;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    margin: 0 auto;
    background: rgba(255,255,255,0.5);
    backdrop-filter: blur(8px);
    border: 10px solid transparent;
    border-image: linear-gradient(135deg, var(--brand-verde), var(--brand-cian)) 1;
    color: var(--brand-azul);
    box-shadow: 0 10px 30px rgba(16,185,129,0.25);
}
.resultado-circulo.reprobado {
    border-image: linear-gradient(135deg, var(--brand-rojo), var(--brand-naranja)) 1;
    box-shadow: 0 10px 30px rgba(239,68,68,0.25);
}
.resultado-circulo .porcentaje { font-size: 2.3rem; font-weight: 800; line-height: 1; font-family: 'Poppins', sans-serif; }
.resultado-circulo .etiqueta { font-size: .75rem; color: #6b6396; text-transform: uppercase; letter-spacing: .05em; }

/* --- Tablas --- */
.table { background: transparent; }
.table thead th {
    background: rgba(99,102,241,0.1);
    color: var(--brand-azul);
    font-weight: 700;
    border-bottom: none;
}
.table td, .table th { vertical-align: middle; border-color: rgba(99,102,241,0.08); }
.table tbody tr:hover { background: rgba(99,102,241,0.06); }

/* --- Badges --- */
.badge { border-radius: 50px; font-weight: 700; }
.badge-nota { font-size: .95rem; padding: 6px 14px; }
.text-bg-primary { background: linear-gradient(135deg, var(--brand-azul-claro), var(--brand-violeta)) !important; }
.text-bg-success { background: linear-gradient(135deg, var(--brand-verde-oscuro), var(--brand-verde)) !important; }
.text-bg-danger { background: linear-gradient(135deg, #b91c1c, var(--brand-rojo)) !important; }
.text-bg-light { background: rgba(255,255,255,0.6) !important; color: var(--brand-azul) !important; }

/* --- Formularios --- */
.form-control, .form-select {
    border-radius: 12px;
    border: 1px solid rgba(99,102,241,0.25);
    background: rgba(255,255,255,0.6);
}
.form-control:focus, .form-select:focus {
    border-color: var(--brand-azul-claro);
    box-shadow: 0 0 0 0.2rem rgba(99,102,241,0.2);
    background: #fff;
}

.foto-identidad-panel {
    border: 1px solid rgba(99,102,241,0.18);
    border-radius: 18px;
    padding: 16px;
    background: rgba(255,255,255,0.45);
}
.foto-video,
.foto-preview {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 16px;
    background: rgba(50,45,116,0.12);
    border: 1px solid rgba(99,102,241,0.2);
}
.foto-miniatura {
    width: 52px;
    height: 52px;
    object-fit: cover;
    border-radius: 14px;
    border: 2px solid rgba(99,102,241,0.35);
}
.foto-detalle {
    width: min(260px, 100%);
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 18px;
    border: 2px solid rgba(99,102,241,0.25);
}

/* --- Alertas --- */
.alert { border-radius: 16px; border: 1px solid transparent; backdrop-filter: blur(6px); }
.alert-danger { background: rgba(239,68,68,0.14); color: #b91c1c; }
.alert-success { background: rgba(16,185,129,0.14); color: #047857; }
.alert-warning { background: rgba(245,158,11,0.16); color: #92400e; }
.alert-info { background: rgba(99,102,241,0.12); color: var(--brand-azul); }

footer { color: #6b6396; }