/* ==========================
   Reset y base
   ========================== */
body {
    font-family: Arial, sans-serif;
    background-color: #fdfdfd;
    color: #333;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: #007BFF;
}

a:hover {
    color: #0056b3;
}

/* ==========================
   Navbar
   ========================== */
.navbar {
    width: 100%;
    background-color: #fff;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    padding: 0.5rem 1rem;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.2rem;
}

.navbar .nav-link {
    color: #007BFF;
    margin-left: 10px;
}

.navbar .nav-link.btn {
    margin-left: 0;
}

/* ==========================
   Flash messages
   ========================== */
.flash-messages {
    list-style: none;
    padding: 0;
    margin: 10px 0;
}

.flash-messages li {
    padding: 8px;
    margin-bottom: 5px;
    border-radius: 4px;
    background-color: #f0f0f0;
}

/* ==========================
   Intro
   ========================== */
.intro {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 6px;
}

.intro h2 {
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.intro p {
    font-size: 1rem;
    line-height: 1.5;
}

/* ==========================
   Formularios (login/register/upload)
   ========================== */
.auth-form, .upload-form {
    max-width: 500px;
    margin: 30px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 6px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 15px;
}

.form-control, .form-select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.description-danger {
    color: #b00020;
    font-size: 0.9em;
    margin-top: 4px;
}

/* ==========================
   Botones
   ========================== */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 4px;
    background-color: #007BFF;
    color: white;
    font-weight: bold;
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-danger {
    background-color: #d9534f;
}

.btn-danger:hover {
    background-color: #c9302c;
}

/* ==========================
   Sesiones
   ========================== */
.session {
    background-color: #fff;
    border-radius: 6px;
    padding: 15px;
    box-shadow: 0 1px 6px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.session h3 a {
    color: #222;
    font-size: 1.2rem;
}

.session small {
    color: #555;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 8px;
}

.session p {
    font-size: 0.95rem;
    margin: 10px 0;
}

.session video {
    width: 100%;
    border-radius: 4px;
    margin-bottom: 10px;
}

/* Categoria/tag */
.session .tag {
    display: inline-block;
    background-color: #e2e6ea;
    color: #555;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    margin-bottom: 5px;
}

.session .tag, .badge {
    display: inline-block;
    background-color: #e2e6ea;
    color: #555;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    margin-bottom: 5px;
}

/* ==========================
   Paginación
   ========================== */
.pagination {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.pagination .page-item .page-link {
    color: #007BFF;
    border-radius: 4px;
    margin: 0 3px;
    padding: 6px 12px;
}

.pagination .page-item.active .page-link {
    background-color: #007BFF;
    color: white;
    border: none;
}

/* ==========================
   Contenedor general
   ========================== */
.container {
    padding-left: 1rem;
    padding-right: 1rem;
    max-width: 1000px;
    margin: 0 auto;
}

/* ==========================
   Responsive
   ========================== */
@media (max-width: 767.98px) {
    .sessions-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .intro h2 {
        font-size: 1.5rem;
    }
    .intro p {
        font-size: 0.95rem;
    }
    .navbar-brand {
        font-size: 1rem;
    }
    .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
}

/* Detalle de sesión */
.session-detail {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1rem;
}

.session-detail h2 {
    font-size: 1.8rem;
    font-weight: bold;
}

.session-detail p {
    font-size: 1rem;
    line-height: 1.6;
}

/* Video responsive */
.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* Relación 16:9 */
    margin-bottom: 20px;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 6px;
}

/* Ajustes móviles */
@media (max-width: 576px) {
    .session-detail h2 {
        font-size: 1.5rem;
    }

    .session-detail p {
        font-size: 0.95rem;
    }
}