/* ===================================
   COURSE SELECTION GRID STYLES
   =================================== */

/* Hero Section */
.practice-hero {
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
}

.practice-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

.practice-hero p {
    font-size: 1.3rem;
    color: var(--dark-text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    animation: fadeInUp 1s ease 0.2s both;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    font-size: 0.95rem;
    color: var(--dark-text-secondary);
}

.breadcrumb a {
    color: var(--primary-yellow);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--secondary-yellow);
}

.breadcrumb i {
    font-size: 0.8rem;
}

/* Filter Section */
.filter-section {
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.filter-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 10px 20px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--dark-text);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
}

.filter-tab:hover {
    border-color: var(--primary-yellow);
    background: var(--dark-card-hover);
}

.filter-tab.active {
    background: var(--gradient-yellow);
    color: #333;
    border-color: var(--primary-yellow);
    box-shadow: var(--shadow-md);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    padding: 10px 16px;
    gap: 10px;
    min-width: 300px;
    transition: all var(--transition-normal);
}

.search-box:focus-within {
    border-color: var(--primary-yellow);
    box-shadow: var(--shadow-sm);
}

.search-box i {
    color: var(--dark-text-secondary);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--dark-text);
    font-size: 1rem;
    width: 100%;
}

.search-box input::placeholder {
    color: var(--dark-text-secondary);
}

/* Course Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.course-card {
    background: var(--gradient-card);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--dark-border);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
}

/* Aceternity UI - Glowing Border Effect */
.course-card::before {
    content: '';
    position: absolute;
    inset: -3px;
    background: linear-gradient(135deg, var(--primary-yellow), #FFA500, #FF8C00);
    border-radius: 16px;
    opacity: 0;
    transition: opacity 0.8s ease;
    z-index: -1;
    filter: blur(12px);
}

.course-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.08) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
    border-radius: 16px;
}

.course-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 25px 50px rgba(255, 215, 0, 0.4);
    border-color: var(--primary-yellow);
}

.course-card:hover::before {
    opacity: 0.8;
}

.course-card:hover::after {
    opacity: 1;
}

/* Course Thumbnail */
.course-thumbnail {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #1a1f3a 0%, #2a3150 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-thumbnail .icon-placeholder {
    font-size: 4rem;
    color: var(--primary-yellow);
    opacity: 0.3;
}

/* Course Badge */
.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--gradient-yellow);
    color: #333;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
}

.course-badge.new {
    background: linear-gradient(135deg, #00ff88, #00cc66);
}

.course-badge.popular {
    background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
}

/* Course Content */
.course-content {
    padding: 24px;
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 16px;
}

.course-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-text);
    margin-bottom: 8px;
}

.course-level {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid var(--primary-yellow);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--primary-yellow);
    font-weight: 600;
}

.course-description {
    color: var(--dark-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Course Stats */
.course-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--dark-border);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--dark-text-secondary);
    font-size: 0.9rem;
}

.stat-item i {
    color: var(--primary-yellow);
}

/* Course Footer */
.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-yellow);
}

.course-price.free {
    color: #00ff88;
}

.course-action {
    padding: 10px 24px;
    background: var(--gradient-yellow);
    color: #333;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.course-action:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 20px;
}

.empty-state i {
    font-size: 5rem;
    color: var(--dark-border);
    margin-bottom: 20px;
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--dark-text);
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--dark-text-secondary);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .practice-hero h1 {
        font-size: 2.5rem;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: 100%;
    }
}