/* ===== COURSES PAGE ===== */

.courses-hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
    background: var(--bg-color);
}

.ch-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.ch-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.ch-content h1 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.2rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--text-color);
    margin: 1rem 0;
    line-height: 1.1;
}

.ch-content p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.ch-filters {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.6rem;
    border-radius: 50px;
    border: 2px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.3);
}

/* COURSES GRID */
.courses-section {
    padding: 60px 0 100px;
    background: var(--bg-color);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.courses-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 5rem 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.courses-loading i {
    font-size: 2rem;
    color: var(--primary-color);
    display: block;
    margin-bottom: 1rem;
}

/* COURSE CARD */
.course-card {
    background: var(--surface-color);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
}

.course-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 60px rgba(212, 175, 55, 0.2);
}

.course-thumb {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-card:hover .course-thumb img {
    transform: scale(1.08);
}

.course-thumb-placeholder {
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.5;
}

.course-type-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 0.3rem 0.9rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-free {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge-paid {
    background: rgba(212, 175, 55, 0.2);
    color: var(--primary-color);
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.course-play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.course-card:hover .course-play-overlay {
    opacity: 1;
}

.play-circle {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #000;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.course-card:hover .play-circle {
    transform: scale(1);
}

.course-body {
    padding: 1.5rem;
}

.course-category {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.course-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.6rem;
    line-height: 1.3;
}

.course-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.course-videos-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.course-videos-count i {
    color: var(--primary-color);
}

.course-price {
    font-weight: 700;
    font-size: 1rem;
}

.price-free {
    color: #22c55e;
}

.price-paid {
    color: var(--primary-color);
}

/* NO COURSES */
.no-courses {
    padding: 5rem 0;
    text-align: center;
}

.no-courses-inner {
    max-width: 400px;
    margin: 0 auto;
    padding: 3rem 2rem;
    background: var(--surface-color);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.no-courses-inner i {
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.5;
    margin-bottom: 1.5rem;
    display: block;
}

.no-courses-inner h3 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin-bottom: 0.75rem;
}

.no-courses-inner p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* COURSE MODAL */
.course-modal {
    position: fixed;
    inset: 0;
    z-index: 9000;
    display: none;
    align-items: flex-start;
    justify-content: flex-end;
}

.course-modal.open {
    display: flex;
}

.cm-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
}

.cm-panel {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 900px;
    height: 100vh;
    background: var(--bg-color);
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}

.course-modal.open .cm-panel {
    transform: translateX(0);
}

.cm-close {
    position: sticky;
    top: 1rem;
    float: right;
    margin: 1rem 1rem 0 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
}

.cm-close:hover {
    background: var(--primary-color);
    color: #000;
}

.cm-content {
    padding: 1.5rem 2rem 4rem;
    clear: both;
}

/* Course Detail Inside Modal */
.cd-thumb {
    width: 100%;
    height: 280px;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background: var(--surface-color);
}

.cd-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cd-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.4;
}

.cd-meta-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.cd-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 0.75rem;
}

.cd-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1rem;
}

.cd-videos-header {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cd-videos-header i {
    color: var(--primary-color);
}

/* Video Item */
.video-item {
    background: var(--surface-color);
    border-radius: 14px;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.video-item.active {
    border-color: var(--primary-color);
}

.video-item-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    cursor: pointer;
    transition: background 0.2s ease;
}

.video-item-header:hover {
    background: rgba(212, 175, 55, 0.05);
}

.vi-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(212, 175, 55, 0.1);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-color);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.video-item.active .vi-number {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #000;
}

.vi-info {
    flex: 1;
}

.vi-title {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
}

.vi-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.vi-play-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 0.8rem;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.video-item:hover .vi-play-btn {
    transform: scale(1.1);
}

.video-player-wrap {
    display: none;
    padding: 0 1.25rem 1.25rem;
}

.video-item.active .video-player-wrap {
    display: block;
}

.video-player-wrap video {
    width: 100%;
    border-radius: 10px;
    background: #000;
    max-height: 360px;
    outline: none;
}

.video-attachments {
    margin-top: 1rem;
}

.va-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.attach-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.attach-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.9rem;
    background: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.attach-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateX(4px);
}

.attach-item i {
    color: var(--primary-color);
    font-size: 1rem;
    flex-shrink: 0;
}

.attach-item .attach-name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.attach-item .attach-size {
    font-size: 0.8rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.attach-download {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(212, 175, 55, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
}

/* Empty videos */
.cd-no-videos {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.cd-no-videos i {
    font-size: 3rem;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: 1rem;
    display: block;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .courses-hero {
        padding: 110px 0 60px;
    }

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

    .cm-panel {
        max-width: 100%;
        border-left: none;
        border-top: 1px solid var(--border-color);
        border-radius: 20px 20px 0 0;
        height: 92vh;
        transform: translateY(100%);
        align-self: flex-end;
    }

    .course-modal {
        align-items: flex-end;
    }

    .course-modal.open .cm-panel {
        transform: translateY(0);
    }

    .cm-content {
        padding: 1rem 1.25rem 3rem;
    }

    .cd-thumb {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .courses-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}