/* ==========================================================================
   COURSE PLAYER / DETAIL PAGE - PREMIUM REDESIGN
   ========================================================================== */

.player-page {
    padding: 120px 20px 60px;
    min-height: 100vh;
    background: #1a1a1a;
    color: #fff;
    position: relative;
    z-index: 1;
}

.player-page::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(26, 26, 26, 0.4) 0%, rgba(26, 26, 26, 0.7) 100%),
        url('../bg/test.webp');
    background-size: cover;
    background-position: center;
    z-index: -1;
}

.player-container {
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
}

/* --- Hero / Detail Left --- */
.player-main-col {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.player-hero {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 40px;
    padding: clamp(30px, 5vw, 60px);
    position: relative;
    overflow: hidden;
}

.player-cat {
    font-family: 'Archivo', sans-serif;
    color: #3b82f6;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 20px;
    display: block;
}

.player-title {
    font-family: 'Archivo', sans-serif;
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 25px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.player-desc {
    font-family: 'Tenor Sans', sans-serif;
    font-size: 1.15rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
}

/* --- Sidebar / Info Card --- */
.player-sidebar {
    position: sticky;
    top: 120px;
    height: fit-content;
}

.info-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 35px;
    padding: 35px;
    display: flex;
    flex-direction: column;
    gap: 25px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.info-price-box {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.info-price-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.5);
}

.info-price-row {
    display: flex;
    align-items: baseline;
    gap: 15px;
}

.info-price-main {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Archivo', sans-serif;
}

.info-price-old {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.3);
    text-decoration: line-through;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 0;
    margin: 0;
    list-style: none;
}

.info-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
}

.info-list-item i {
    color: #3b82f6;
    font-size: 1.1rem;
}

.btn-buy-now {
    background: #fff;
    color: #000;
    border: none;
    padding: 1.1rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
}

.btn-buy-now:hover {
    background: #3b82f6;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

/* --- Curriculum --- */
.curriculum-wrap {
    margin-top: 20px;
}

.section-title {
    font-family: 'Archivo', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.module-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.module-header {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.module-title h3 {
    font-size: 1.15rem;
    font-weight: 500;
    margin: 0;
}

.module-stats {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 5px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.lesson-list {
    padding: 0 25px 25px;
    display: grid;
    gap: 10px;
}

.lesson-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    border-radius: 15px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.is-locked {
    opacity: 0.6;
}

.lesson-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lesson-icon {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.3);
}

.is-active-lesson .lesson-icon {
    color: #3b82f6;
}

.lesson-name {
    font-size: 0.95rem;
    font-weight: 400;
}

.lesson-meta {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* --- Responsive --- */
@media (max-width: 1100px) {
    .player-container {
        grid-template-columns: 1fr;
    }

    .player-sidebar {
        position: static;
    }

    .info-card {
        max-width: 500px;
    }
}

@media (max-width: 768px) {
    .player-page {
        padding-top: 100px;
    }

    .player-hero {
        border-radius: 30px;
        padding: 30px;
    }

    .info-card {
        border-radius: 30px;
    }
}