/* Theme Variables */
:root {
    --bg-light: #f8f9fa;
    --bg-card: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #eeeeee;
    --progress-bg: #eeeeee;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] {
    --bg-light: #1a1a1a;
    --bg-card: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --border-color: #333333;
    --progress-bg: #333333;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
}

/* Courses Page Styles */

.courses-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.courses-section h1 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 3rem;
    font-size: 2.5rem;
    font-weight: 700;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 0 1rem;
}

.course-card {
    background: var(--bg-card);
    border-radius: 15px;
    box-shadow: 0 4px 6px var(--shadow-color);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px var(--shadow-hover);
}

.course-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.course-content {
    padding: 1.5rem;
}

.course-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.course-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding: 0 1rem;
    border-top: 1px solid var(--border-color);
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.course-meta i {
    color: var(--text-primary);
}

/* Progress Bar */
.progress-container {
    width: 100%;
    height: 8px;
    background: var(--progress-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 1rem;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #2ecc71, #3498db);
    width: 0;
    transition: width 0.5s ease;
}

/* Buttons */
.btn-course {
    display: block;
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(90deg, #2ecc71, #3498db);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, background 0.3s ease;
    margin-top: 1rem;
}

.btn-course:hover {
    transform: translateY(-2px);
    background: linear-gradient(90deg, #27ae60, #2980b9);
}

/* Responsive Design */
@media (max-width: 768px) {
    .courses-section h1 {
        font-size: 2rem;
    }
    
    .course-title {
        font-size: 1.25rem;
    }
}

/* Animation */
.course-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}