:root {
    --cefrad-primary: #285280;
    --cefrad-accent: #78C4C4;
    --cefrad-gray: #777777;
    --cefrad-white: #FFFFFF;
    --cefrad-primary-dark: #1a3a5c;
    --cefrad-accent-light: #e8f6f6;
    --cefrad-gray-light: #f5f6f8;
}

body {
    background-color: var(--cefrad-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #333;
}

main.container {
    flex: 1;
}

a {
    color: var(--cefrad-primary);
}

a:hover {
    color: var(--cefrad-primary-dark);
}

/* ─── NAVBAR ─────────────────────────────── */

.navbar-cefrad {
    background-color: var(--cefrad-primary) !important;
    box-shadow: 0 2px 12px rgba(40, 82, 128, 0.2);
}

.navbar-cefrad .navbar-brand {
    color: var(--cefrad-white);
    font-weight: 700;
    letter-spacing: 0.5px;
}

.navbar-cefrad .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.75);
    transition: color 0.2s;
    position: relative;
}

.navbar-cefrad .navbar-nav .nav-link:hover {
    color: var(--cefrad-white);
}

.navbar-cefrad .navbar-nav .nav-link.active {
    color: var(--cefrad-accent);
}

.navbar-cefrad .navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 8px;
    right: 8px;
    height: 2px;
    background-color: var(--cefrad-accent);
    border-radius: 1px;
}

.navbar-cefrad .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.3);
}

.navbar-cefrad .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(255,255,255,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ─── BUTTONS ─────────────────────────────── */

.btn-primary {
    background-color: var(--cefrad-primary);
    border-color: var(--cefrad-primary);
    color: var(--cefrad-white);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: var(--cefrad-primary-dark) !important;
    border-color: var(--cefrad-primary-dark) !important;
    color: var(--cefrad-white) !important;
}

.btn-outline-primary {
    border-color: var(--cefrad-primary);
    color: var(--cefrad-primary);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus,
.btn-outline-primary:active {
    background-color: var(--cefrad-primary) !important;
    border-color: var(--cefrad-primary) !important;
    color: var(--cefrad-white) !important;
}

.btn-accent {
    background-color: var(--cefrad-accent);
    border-color: var(--cefrad-accent);
    color: #1a3a5c;
    font-weight: 600;
}

.btn-accent:hover,
.btn-accent:focus {
    background-color: #5eb8b8;
    border-color: #5eb8b8;
    color: #1a3a5c;
}

.btn-outline-accent {
    border-color: var(--cefrad-accent);
    color: #1a5c5c;
}

.btn-outline-accent:hover,
.btn-outline-accent:focus {
    background-color: var(--cefrad-accent);
    color: #1a3a5c;
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--cefrad-gray);
    color: var(--cefrad-gray);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--cefrad-gray);
    border-color: var(--cefrad-gray);
    color: var(--cefrad-white);
}

/* ─── CARDS ───────────────────────────────── */

.card {
    border: none;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06), 0 1px 3px rgba(0, 0, 0, 0.04);
    border-radius: 10px;
    transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.card-header {
    background-color: var(--cefrad-white);
    border-bottom: 1px solid #eef0f2;
    font-weight: 600;
    padding: 14px 20px;
    border-radius: 10px 10px 0 0 !important;
}

.card-body {
    padding: 20px;
}

/* ─── STAT CARDS (panels) ─────────────────── */

.stat-card {
    border-radius: 12px;
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.stat-card .card-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.85;
}

.stat-card .display-6 {
    font-weight: 700;
    font-size: 2.2rem;
}

.stat-card-primary {
    background: linear-gradient(135deg, var(--cefrad-primary), #1a3a5c);
    color: var(--cefrad-white);
}

.stat-card-accent {
    background: linear-gradient(135deg, var(--cefrad-accent), #5eb8b8);
    color: #1a3a5c;
}

.stat-card-warning {
    background: linear-gradient(135deg, #f0ad4e, #ec971f);
    color: var(--cefrad-white);
}

.stat-card-danger {
    background: linear-gradient(135deg, #d9534f, #c9302c);
    color: var(--cefrad-white);
}

.stat-card-info {
    background: linear-gradient(135deg, #5bc0de, #46b8da);
    color: var(--cefrad-white);
}

/* ─── BADGES ──────────────────────────────── */

.badge.badge-accent {
    background-color: var(--cefrad-accent);
    color: #1a3a5c;
    font-weight: 600;
}

.badge-primary {
    background-color: var(--cefrad-primary);
    color: var(--cefrad-white);
}

.badge.badge-gray {
    background-color: var(--cefrad-gray);
    color: var(--cefrad-white);
}

.badge-estado {
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: 20px;
    font-weight: 500;
}

/* ─── TABLES ──────────────────────────────── */

.table thead th {
    background-color: var(--cefrad-gray-light);
    color: var(--cefrad-primary);
    font-weight: 600;
    border-bottom: 2px solid var(--cefrad-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-hover tbody tr:hover {
    background-color: var(--cefrad-accent-light);
}

/* ─── FORMS ───────────────────────────────── */

.form-control:focus,
.form-select:focus {
    border-color: var(--cefrad-accent);
    box-shadow: 0 0 0 0.2rem rgba(120, 196, 196, 0.25);
}

.form-label {
    font-weight: 500;
    color: #444;
    font-size: 0.9rem;
}

/* ─── PROGRESS BARS ───────────────────────── */

.progress {
    background-color: #e9ecef;
    border-radius: 20px;
}

.progress-bar {
    background-color: var(--cefrad-accent);
    border-radius: 20px;
}

.progress-bar.bg-success {
    background-color: var(--cefrad-accent) !important;
}

/* ─── VIDEO ───────────────────────────────── */

.reproductor-video {
    width: 100%;
    max-width: 800px;
    border-radius: 10px;
    background: #000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.video-overlay {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
}

.yt-player-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
}

.yt-block-top {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    pointer-events: auto;
    background: transparent;
}

.yt-block-bottom-right {
    position: absolute;
    bottom: 50px;
    right: 0;
    width: 100px;
    height: 45px;
    pointer-events: auto;
    background: transparent;
}

.video-overlay .overlay-texto {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--cefrad-white);
    font-size: 1.2rem;
    text-align: center;
    background: rgba(0, 0, 0, 0.7);
    padding: 16px 24px;
    border-radius: 10px;
}

/* ─── EXAMEN / PREGUNTAS ──────────────────── */

.opcion-pregunta {
    cursor: pointer;
    padding: 12px 16px;
    border: 2px solid #dee2e6;
    border-radius: 10px;
    margin-bottom: 8px;
    transition: all 0.2s;
}

.opcion-pregunta:hover {
    border-color: var(--cefrad-accent);
    background-color: var(--cefrad-accent-light);
}

.opcion-pregunta.seleccionada {
    border-color: var(--cefrad-primary);
    background-color: #e8eef5;
}

.opcion-pregunta.correcta {
    border-color: var(--cefrad-accent);
    background-color: #d4edda;
    color: #155724;
}

.opcion-pregunta.incorrecta {
    border-color: #dc3545;
    background-color: #f8d7da;
}

/* ─── RESULTADOS ──────────────────────────── */

.puntaje-anillo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    margin: 0 auto;
}

.puntaje-aprobado {
    background: #d4edda;
    color: #155724;
    border: 6px solid var(--cefrad-accent);
}

.puntaje-reprobado {
    background: #f8d7da;
    color: #842029;
    border: 6px solid #dc3545;
}

/* ─── CUENTA REGRESIVA ────────────────────── */

.cuenta-regresiva {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--cefrad-primary);
}

/* ─── CARDS DE CURSOS (estudiante) ────────── */

.card-curso {
    transition: transform 0.2s, box-shadow 0.2s;
}

.card-curso:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(40, 82, 128, 0.12);
}

/* ─── FOOTER ──────────────────────────────── */

.footer-cefrad {
    background-color: var(--cefrad-primary);
    color: rgba(255, 255, 255, 0.85);
    padding: 16px 0;
    margin-top: auto;
}

.footer-cefrad a {
    color: var(--cefrad-accent);
}

.footer-cefrad a:hover {
    color: var(--cefrad-white);
}

/* ─── LOGIN ───────────────────────────────── */

.login-card {
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(40, 82, 128, 0.12);
}

.login-card .card-title {
    color: var(--cefrad-primary);
    font-weight: 700;
}

/* ─── MISC ────────────────────────────────── */

.text-primary-custom {
    color: var(--cefrad-primary);
}

.text-accent {
    color: var(--cefrad-accent);
}

.bg-accent-soft {
    background-color: var(--cefrad-accent-light);
}

.border-accent {
    border-color: var(--cefrad-accent) !important;
}

.list-group-item {
    border: none;
    border-bottom: 1px solid #eef0f2;
    padding: 14px 16px;
}

.list-group-item:last-child {
    border-bottom: none;
}

.modal-header {
    background-color: var(--cefrad-gray-light);
    border-bottom: 1px solid #eef0f2;
}

.modal-title {
    color: var(--cefrad-primary);
    font-weight: 600;
}

.alert-accent {
    background-color: var(--cefrad-accent-light);
    border-color: var(--cefrad-accent);
    color: #1a3a5c;
}

/* ─── SECTION TITLES ──────────────────────── */

h2 {
    color: var(--cefrad-primary);
    font-weight: 700;
}

h2 .text-muted {
    color: var(--cefrad-gray) !important;
}

/* ─── PAGINATION / BUTTON GROUPS ──────────── */

.btn-group .btn-outline-secondary.active {
    background-color: var(--cefrad-primary);
    border-color: var(--cefrad-primary);
    color: var(--cefrad-white);
}

.btn-group .btn-outline-secondary {
    border-color: #ccc;
    color: var(--cefrad-gray);
}

/* ─── MODAL FOOTER ────────────────────────── */

.modal-footer .btn-primary {
    background-color: var(--cefrad-primary);
    border-color: var(--cefrad-primary);
}

/* ─── UPLOAD PROGRESS BAR ─────────────────── */

.barra-subida {
    height: 6px;
    border-radius: 20px;
    background-color: #e9ecef;
    overflow: hidden;
    margin-top: 10px;
}

.barra-subida .barra-subida-progreso {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--cefrad-accent), var(--cefrad-primary));
    border-radius: 20px;
    transition: width 0.3s;
}

.texto-subida {
    font-size: 0.85rem;
    color: var(--cefrad-gray);
    margin-top: 4px;
}

/* ─── BOTÓN CERTIFICADO ─────────────────────── */

.btn-certificado {
    background-color: #198754;
    border-color: #198754;
    color: #fff;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-certificado:hover {
    background-color: #157347;
    border-color: #146c43;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(25, 135, 84, 0.3);
}

.btn-certificado i {
    margin-right: 4px;
}