/* assets/css/style.css */
:root {
    --primary-color: #008B8B;
    --primary-hover: #006b6b;
    --secondary-color: #DA9100;
    --secondary-hover: #b87a00;
    --dark-color: #1a252f;
    --light-bg: #f4f7f6;
    --card-bg: #ffffff;
    --text-color: #2c3e50;
    --text-muted: #7f8c8d;
    --border-color: #e2e8f0;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
}

/* ===================================================
   AUTENTICACIÓN Y LOGIN
   =================================================== */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-card {
    background: var(--card-bg);
    width: 100%;
    max-width: 420px;
    padding: 35px 30px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.auth-card .logo {
    max-width: 140px;
    height: auto;
    margin-bottom: 15px;
}

.auth-card h2 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.auth-card p.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 25px;
}

/* ===================================================
   FORMULARIOS
   =================================================== */
.form-group {
    text-align: left;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 139, 139, 0.15);
}

/* ===================================================
   BOTONES
   =================================================== */
.btn {
    display: inline-block;
    width: 100%;
    padding: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background-color 0.2s ease-in-out;
}

.btn:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
}

/* ===================================================
   ALERTAS
   =================================================== */
.alert {
    padding: 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    text-align: left;
}

.alert-danger {
    background-color: #fde8e8;
    color: var(--danger);
    border: 1px solid #f8b4b4;
}

.alert-success {
    background-color: #def7ec;
    color: var(--success);
    border: 1px solid #bcf0da;
}

/* ===================================================
   TARJETAS Y GRILLA DE CURSOS (CAMPUS ALUMNO)
   =================================================== */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.course-card {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
}

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

.course-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.course-card-body h3 {
    font-size: 1.15rem;
    color: var(--dark-color);
    margin-bottom: 8px;
}

/* ===================================================
   BANNER DINÁMICO DE CURSO (ESTILO HERO CARD CON LOGO)
   =================================================== */
.portada-banner {
    width: 100%;
    height: 190px;
    background: linear-gradient(135deg, #0b131e 0%, #152232 60%, #101c2b 100%);
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 20px;
    box-sizing: border-box;
    overflow: hidden;
    border-top-left-radius: 12px;
    border-top-right-radius: 12px;
    border-bottom: 3px solid var(--accent-border, #008B8B);
}

.portada-banner::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -20px;
    width: 160px;
    height: 160px;
    background: radial-gradient(circle, var(--accent-glow, rgba(0, 139, 139, 0.35)) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.portada-banner .banner-logo {
    position: absolute;
    top: 14px;
    right: 16px;
    height: 24px;
    width: auto;
    opacity: 0.95;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
    z-index: 3;
}

.portada-banner .banner-left {
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 68%;
    z-index: 2;
}

.portada-banner .banner-tag {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(4px);
    color: #cbd5e1;
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 3px 10px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-radius: 20px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.portada-banner .banner-titulo {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 800;
    line-height: 1.25;
    margin: 0;
    letter-spacing: -0.2px;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.portada-banner .banner-right {
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    margin-top: 12px;
}

.portada-banner .banner-icon {
    font-size: 3.4rem;
    filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.5));
    transform: rotate(-6deg) scale(1.02);
    transition: transform 0.3s ease;
}

.course-card:hover .banner-icon {
    transform: rotate(0deg) scale(1.12);
}

/* ==========================================================================
   REGLAS MAESTRAS DE RESPONSIVIDAD (MOBILE & TABLET FIX)
   ========================================================================== */

/* 1. Reset preventivo de desbordes en móviles */
html, body {
    max-width: 100% !important;
    overflow-x: hidden !important;
}

*, *::before, *::after {
    box-sizing: border-box !important;
}

/* 2. Adaptación universal del contenedor principal */
.container, main.container {
    width: 100% !important;
    max-width: 1200px !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
    box-sizing: border-box !important;
}

/* 3. Colapso automático de Grids a 1 columna en móviles */
@media (max-width: 900px) {
    /* Fuerza a que cualquier layout de 2 o 3 columnas se apile verticalmente */
    [style*="display: grid"],
    [style*="display:grid"] {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }

    /* Ajuste de cajas y padding interno para pantallas chicas */
    .content-box, 
    .card-box, 
    .admin-card {
        padding: 16px !important;
        border-radius: 10px !important;
        max-width: 100% !important;
    }

    /* Títulos y textos principales */
    h1 {
        font-size: 1.45rem !important;
    }
    h2 {
        font-size: 1.2rem !important;
    }

    /* Formularios y campos al ancho completo */
    input[type="text"],
    input[type="number"],
    input[type="email"],
    input[type="password"],
    select,
    textarea,
    .form-control,
    .form-field,
    .form-control-custom {
        width: 100% !important;
        font-size: 16px !important; /* Evita que Safari/Chrome en iOS/Android hagan zoom automático */
    }

    /* Filas de canales de pago (Mercado Pago, CBU, PayPal) */
    .payment-channel-row {
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 10px !important;
        padding: 14px !important;
        word-break: break-word !important;
    }

    .payment-channel-row strong {
        display: inline-block !important;
        word-break: break-all !important;
    }

    /* Tablas con scroll horizontal suave sin romper el ancho de pantalla */
    .table-responsive,
    div[style*="overflow-x: auto"] {
        width: 100% !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        margin-bottom: 15px !important;
    }

    /* Menús de navegación superior */
    .navbar-top, 
    .navbar-admin {
        padding: 12px 15px !important;
    }
    
    .navbar-menu,
    .navbar-menu-admin {
        justify-content: center !important;
        gap: 8px !important;
    }
}