:root {
    --azul-oscuro: #0B1F3A;
    --azul-claro: #132A4A;
    --dorado: #C8A24A;
    --blanco: #ffffff;
    --texto-oscuro: #2D3E50;
    --texto-gris: #5D6D7E;
    --bg-gris: #F8F9F9;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
}

body {
    background-color: var(--blanco);
    color: var(--texto-oscuro);
}

/* HEADER / NAVBAR */
nav {
    background-color: var(--azul-oscuro);
    padding: 15px 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(200, 162, 74, 0.2);
}

.logo {
    font-weight: 700;
    color: var(--blanco);
    text-decoration: none;
    letter-spacing: 2px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--dorado);
}

.logo-img {
    height: 24px;
    width: auto;
    object-fit: contain;
}

.back-btn {
    color: var(--blanco);
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* HERO SECTION (DARK) */
.course-hero {
    background-color: var(--azul-oscuro);
    color: var(--blanco);
    padding: 40px 50px 80px 50px;
    position: relative;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.breadcrumbs {
    font-size: 12px;
    color: var(--dorado);
    margin-bottom: 20px;
    font-weight: 600;
}

.course-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    max-width: 700px;
    line-height: 1.2;
}

.course-subtitle {
    font-size: 18px;
    margin-bottom: 20px;
    max-width: 700px;
    color: #bdc3c7;
}

.course-badges {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.badge {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 4px;
}

.badge-best {
    background-color: var(--dorado);
    color: var(--azul-oscuro);
}

.badge-new {
    background-color: #E67E22;
    color: var(--blanco);
}

.course-meta {
    font-size: 14px;
    display: flex;
    gap: 20px;
    color: var(--blanco);
}

.course-meta a {
    color: var(--dorado);
    text-decoration: none;
    font-weight: 600;
}

/* FLOATING SIDEBAR CARD */
.sidebar-card {
    position: absolute;
    top: 40px;
    right: 50px;
    width: 380px;
    background: var(--blanco);
    border-radius: 4px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    color: var(--texto-oscuro);
    overflow: hidden;
    z-index: 10;
}

.video-preview {
    width: 100%;
    height: 215px;
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/banner.png');
    background-size: cover;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--blanco);
    cursor: pointer;
}

.play-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.play-icon svg {
    fill: var(--azul-oscuro);
}

.card-body {
    padding: 24px;
}

.price-section {
    margin-bottom: 20px;
}

.price-main {
    font-size: 38px;
    font-weight: 800;
    color: var(--texto-oscuro);
    display: flex;
    align-items: baseline;
    gap: 5px;
    line-height: 1;
}

.price-secondary {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 8px;
    color: var(--texto-gris);
    font-size: 16px;
}

.old-price {
    text-decoration: line-through;
    opacity: 0.7;
}

.discount {
    color: var(--dorado);
    font-weight: 700;
    background: rgba(200, 162, 74, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
}

.urgency-note {
    color: #d63031;
    font-size: 12px;
    font-weight: 600;
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.add-btn {
    width: 100%;
    padding: 16px;
    background-color: var(--dorado);
    color: var(--azul-oscuro);
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 10px;
    transition: background 0.3s;
}

.add-btn:hover {
    background-color: #b38f3a;
}

.buy-btn {
    width: 100%;
    padding: 16px;
    background-color: transparent;
    color: var(--texto-oscuro);
    border: 1px solid var(--texto-oscuro);
    border-radius: 4px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    margin-bottom: 20px;
}

.guarantees {
    font-size: 13px;
    color: var(--texto-gris);
    list-style: none;
}

.guarantees li {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* MAIN BODY CONTENT */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 50px;
    display: flex;
}

.content-area {
    width: 700px;
}

.learning-box {
    border: 1px solid #D1D7DC;
    padding: 24px;
    margin-bottom: 40px;
}

.learning-box h2 {
    font-size: 24px;
    margin-bottom: 20px;
}

.learning-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.learning-item {
    font-size: 14px;
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.learning-item svg {
    color: var(--dorado);
    flex-shrink: 0;
}

/* CURRICULUM SECTION */
.section-title-alt {
    font-size: 24px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--dorado);
    display: inline-block;
    padding-bottom: 5px;
}

.curriculum-accordion {
    border: 1px solid #D1D7DC;
    border-bottom: none;
    margin-bottom: 40px;
}

.accordion-item {
    border-bottom: 1px solid #D1D7DC;
}

.accordion-header {
    padding: 15px 20px;
    background: var(--bg-gris);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
}

.accordion-content {
    padding: 15px 20px;
    display: none;
    font-size: 14px;
    color: var(--texto-gris);
}

.accordion-item.active .accordion-content {
    display: block;
}

/* TABLE STYLES FOR TEMARIO */
.temario-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 13px;
}

.temario-table th {
    text-align: left;
    background: rgba(200, 162, 74, 0.05);
    color: var(--azul-oscuro);
    padding: 10px;
    border-bottom: 2px solid var(--dorado);
}

.temario-table td {
    padding: 12px 10px;
    border-bottom: 1px solid #eee;
    vertical-align: top;
}

.temario-table tr:last-child td {
    border-bottom: none;
}

.temario-table .col-id {
    width: 40px;
    font-weight: 700;
    color: var(--dorado);
}

.temario-table .col-tema {
    width: 180px;
    font-weight: 600;
    color: var(--azul-oscuro);
}

.temario-table .col-sub {
    color: var(--texto-gris);
}

.temario-table .col-time {
    width: 70px;
    text-align: right;
    font-weight: 600;
}

.instructor-bio {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.instructor-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--dorado);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .sidebar-card {
        position: relative;
        top: 0;
        right: 0;
        width: 100%;
        margin-top: 30px;
    }

    .main-container {
        flex-direction: column;
        padding: 20px;
    }

    .content-area {
        width: 100%;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 15px 20px;
    }

    .course-hero {
        padding: 30px 20px 60px 20px;
    }

    .course-title {
        font-size: 28px;
    }

    .price-main {
        font-size: 32px;
    }

    .accordion-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .accordion-header span:last-child {
        font-size: 12px;
        opacity: 0.8;
        font-weight: 500;
    }

    .accordion-content {
        padding: 10px 5px;
        overflow-x: auto;
    }

    .temario-table {
        min-width: 450px;
        /* Asegura que la tabla no se colapse demasiado */
    }

    .learning-grid {
        grid-template-columns: 1fr;
    }
}