/* Courses Page - Black & White Minimalist Design */

.courses-page {
    padding: 4rem 0;
    min-height: calc(100vh - 80px);
    background: var(--color-bg);
}

/* Page Header */
.page-header {
    margin-bottom: 3rem;
}

.page-header-content h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    letter-spacing: -2px;
}

.page-header-content p {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

/* Search Section */
.search-section {
    margin-bottom: 2rem;
}

.search-form {
    max-width: 600px;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrapper i {
    position: absolute;
    left: 1.25rem;
    color: var(--color-text-light);
    font-size: 1.125rem;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3.5rem;
    border: 2px solid var(--color-border);
    border-radius: 50px;
    font-size: 1rem;
    background: var(--color-bg);
    color: var(--color-text);
    transition: all 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: #000000;
}

.search-input::placeholder {
    color: var(--color-text-light);
}

/* Filter Chips */
.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

/* Chip par defaut: fond blanc, bordure grise, texte noir */
.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: 2px solid var(--color-border);
    border-radius: 50px;
    background: var(--color-bg);
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all 0.2s;
}

.filter-chip i {
    font-size: 0.875rem;
}

[data-theme="light"] .filter-chip i {
    color: #000000;
}

[data-theme="dark"] .filter-chip i {
    color: #ffffff;
}

/* Hover */
.filter-chip:hover {
    transform: translateY(-2px);
}

[data-theme="light"] .filter-chip:hover {
    border-color: #000000;
}

[data-theme="dark"] .filter-chip:hover {
    border-color: #ffffff;
}

/* Active: fond inversé */
[data-theme="light"] .filter-chip.active {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

[data-theme="dark"] .filter-chip.active {
    background: #ffffff;
    color: #000000;
    border-color: #ffffff;
}

[data-theme="light"] .filter-chip.active i {
    color: #ffffff;
}

[data-theme="dark"] .filter-chip.active i {
    color: #000000;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 5rem 2rem;
    background: var(--color-bg);
    border-radius: 16px;
    border: 2px dashed var(--color-border);
}

.empty-state i {
    font-size: 5rem;
    color: var(--color-text);
    margin-bottom: 2rem;
    opacity: 0.15;
}

.empty-state h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

.empty-state p {
    color: var(--color-text-light);
    margin-bottom: 2rem;
    font-size: 1.0625rem;
}

.empty-state .btn {
    display: inline-flex;
    padding: 0.875rem 2rem;
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2.5rem;
    align-items: stretch;
}

/* Course Card */
.course-card {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-6px);
}

[data-theme="light"] .course-card:hover {
    border-color: #000000;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .course-card:hover {
    border-color: #ffffff;
    box-shadow: 0 12px 32px rgba(255, 255, 255, 0.12);
}

.course-header {
    height: 160px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="light"] .course-header {
    background: #000000;
}

[data-theme="dark"] .course-header {
    background: #ffffff;
}

.course-header-content {
    position: relative;
    width: 100%;
    height: 100%;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.course-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    align-self: flex-start;
}

[data-theme="light"] .course-badge {
    background: #ffffff;
    color: #000000;
}

[data-theme="dark"] .course-badge {
    background: #000000;
    color: #ffffff;
}

.featured-badge {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.125rem;
}

[data-theme="light"] .featured-badge {
    background: #ffffff;
    color: #000000;
}

[data-theme="dark"] .featured-badge {
    background: #000000;
    color: #ffffff;
}

.course-body {
    padding: 2rem 1.75rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-subject {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text-light);
    margin-bottom: 1rem;
    padding: 0.375rem 0;
    position: relative;
}

.course-subject::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
}

[data-theme="light"] .course-subject::after {
    background: #000000;
}

[data-theme="dark"] .course-subject::after {
    background: #ffffff;
}

.course-body h3 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.875rem;
    line-height: 1.25;
    min-height: 3.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-body p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex: 1;
    min-height: 4rem;
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    padding: 1rem 0;
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.course-meta i {
    font-size: 0.875rem;
    opacity: 0.7;
}

.course-footer {
    padding: 0 1.75rem 1.75rem;
}

.btn-block {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.9375rem;
}

[data-theme="light"] .btn-primary {
    background: #000000;
    color: #ffffff;
    border: 2px solid #000000;
}

[data-theme="dark"] .btn-primary {
    background: #ffffff;
    color: #000000;
    border: 2px solid #ffffff;
}

[data-theme="light"] .btn-primary:hover {
    background: #ffffff;
    color: #000000;
}

[data-theme="dark"] .btn-primary:hover {
    background: #000000;
    color: #ffffff;
}

[data-theme="light"] .btn-enrolled {
    background: #ffffff;
    color: #000000;
    border: 2px solid #000000;
}

[data-theme="dark"] .btn-enrolled {
    background: #000000;
    color: #ffffff;
    border: 2px solid #ffffff;
}

[data-theme="light"] .btn-enrolled:hover {
    background: #000000;
    color: #ffffff;
}

[data-theme="dark"] .btn-enrolled:hover {
    background: #ffffff;
    color: #000000;
}

.btn i {
    transition: transform 0.2s;
    font-size: 0.875rem;
}

.btn-primary:hover .fa-arrow-right {
    transform: translateX(4px);
}

.btn-enrolled:hover .fa-play {
    transform: scale(1.15);
}

/* Responsive */
@media (max-width: 768px) {
    .courses-page {
        padding: 2rem 0;
    }

    .page-header-content h1 {
        font-size: 2rem;
        letter-spacing: -1px;
    }

    .courses-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .search-input {
        padding: 0.875rem 0.875rem 0.875rem 3rem;
    }

    .filter-chips {
        margin-bottom: 2rem;
    }
}