/* 
* Exercises.css
* Contains styles specifically for the exercise browser:
* - Exercise browser layout
* - Search and filter components
* - Exercise cards and grid
* - Loading states and animations
* - Error states
*/

/* Exercise Browser Layout */
.exercise-browser {
    padding: 2rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Filter Container */
.filter-container {
    background-color: var(--bg2);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

/* Search Bar */
.search-bar {
    position: relative;
    margin-bottom: 1rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text1);
}

#exerciseSearch {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 1px solid #E5E7EB;
    border-radius: 0.5rem;
    font-size: 1rem;
    background-color: var(--bg2);
    color: var(--text2);
    transition: all 0.2s ease;
}

#exerciseSearch:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

/* Filter Options */
.filter-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-select {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem 1rem;
    border: 1px solid #E5E7EB;
    border-radius: 0.5rem;
    font-size: 1rem;
    background-color: var(--bg2);
    color: var(--text2);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-select:hover {
    border-color: var(--primary-light);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

/* Favorites Button */
.btn-favorites {
    padding: 0.75rem 1.5rem;
    background-color: var(--bg2);
    color: var(--text2);
    border: 1px solid #E5E7EB;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-favorites:hover {
    background-color: var(--bg1);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-favorites i {
    color: var(--primary);
}

/* Exercise Grid */
.exercise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* Exercise Card */
.exercise-card {
    background-color: var(--bg2);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease-in-out;
}

.exercise-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.15);
}

.exercise-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background-color: var(--bg-gray);
}

.exercise-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.exercise-content {
    padding: 1.5rem;
}

.exercise-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text2);
}

.exercise-content p {
    color: var(--text1);
    margin-bottom: 0.5rem;
}

/* Exercise Header with Favorite Button */
.exercise-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.favorite-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    transition: all 0.2s ease;
    color: var(--text1);
}

.favorite-button:hover {
    transform: scale(1.1);
}

.favorite-btn {
    font-size: 1.25rem;
}

.favorite-btn.active {
    color: #EF4444; /* Red-500 */
}

/* Loading States */
.skeleton {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    background-color: var(--bg-gray);
}

.skeleton-text {
    height: 1rem;
    background-color: var(--bg-gray);
    margin-bottom: 0.5rem;
    border-radius: 0.25rem;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: .5;
    }
}

/* Loading Spinner */
.loading-spinner {
    display: none;
    text-align: center;
    padding: 2rem;
}

.loading-spinner i {
    font-size: 2rem;
    color: var(--primary);
}

/* Error and No Results States */
.error-message,
.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text1);
    background-color: var(--bg2);
    border-radius: 0.5rem;
    margin-top: 2rem;
}

/* Media Queries */
@media (max-width: 768px) {
    .filter-options {
        flex-direction: column;
    }
    
    .filter-select,
    .btn-favorites {
        width: 100%;
    }
    
    .exercise-grid {
        grid-template-columns: 1fr;
    }
}

/* Dark Mode Adjustments */
@media (prefers-color-scheme: dark) {
    .exercise-card {
        border: 1px solid #374151;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    }
    
    #exerciseSearch,
    .filter-select {
        border-color: #374151;
        background-color: var(--bg2);
    }
    
    #exerciseSearch:focus,
    .filter-select:focus {
        border-color: var(--primary-light);
    }
    
    .skeleton-image,
    .skeleton-text {
        background-color: #374151;
    }
    
    .btn-favorites {
        border-color: #374151;
    }
    
    .btn-favorites:hover {
        background-color: var(--bg1);
        border-color: var(--primary-light);
    }
}