/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #1a1a1a;
    color: #ffffff;
    line-height: 1.6;
}

/* Header */
.header {
    background-color: #2d2d2d;
    padding: 1rem;
    border-bottom: 1px solid #404040;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #ff6b35;
}

.controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.btn, .select {
    padding: 0.5rem 1rem;
    border: 1px solid #555;
    border-radius: 4px;
    background-color: #3d3d3d;
    color: #ffffff;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}

.btn:hover {
    background-color: #4d4d4d;
}

.select {
    cursor: pointer;
}

/* Main content */
.main {
    padding: 1rem;
    min-height: calc(100vh - 120px);
}

/* Dropzone */
.dropzone {
    border: 2px dashed #555;
    border-radius: 8px;
    padding: 3rem 1rem;
    text-align: center;
    margin: 2rem 0;
    transition: border-color 0.2s, background-color 0.2s;
}

.dropzone:hover {
    border-color: #ff6b35;
    background-color: rgba(255, 107, 53, 0.05);
}

.dropzone.dragover {
    border-color: #ff6b35;
    background-color: rgba(255, 107, 53, 0.1);
}

.dropzone-content {
    pointer-events: none;
}

.dropzone-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.dropzone-hint {
    color: #888;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* Gallery grid */
.gallery {
    margin-top: 2rem;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    padding: 0;
}

/* Media items */
.media-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background-color: #2d2d2d;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    aspect-ratio: 1;
}

.media-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.media-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.media-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    padding: 0.5rem;
    color: white;
    font-size: 0.8rem;
}

.media-name {
    font-weight: 500;
    margin-bottom: 0.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-details {
    font-size: 0.7rem;
    color: #ccc;
    display: flex;
    justify-content: space-between;
}

.video-indicator {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.modal-close {
    position: absolute;
    top: -3rem;
    right: 0;
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    z-index: 1001;
    padding: 0.5rem;
}

.modal-nav {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    z-index: 1001;
    pointer-events: none;
}

.nav-btn {
    background-color: rgba(0, 0, 0, 0.7);
    border: none;
    color: white;
    font-size: 2rem;
    padding: 1rem;
    cursor: pointer;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: all;
    transition: background-color 0.2s;
}

.nav-btn:hover {
    background-color: rgba(0, 0, 0, 0.9);
}

.modal-media-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    max-height: 70vh;
}

.modal-image, .modal-video {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
}

.modal-info {
    margin-top: 1rem;
    text-align: center;
    color: white;
}

.modal-info h3 {
    margin-bottom: 0.5rem;
    color: #ff6b35;
}

.modal-details {
    display: flex;
    gap: 2rem;
    justify-content: center;
    font-size: 0.9rem;
    color: #ccc;
}

/* Loading indicator */
.loading {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #333;
    border-top: 4px solid #ff6b35;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility classes */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* Mobile optimizations */
@media (max-width: 768px) {
    .header {
        padding: 0.5rem;
    }
    
    .header h1 {
        font-size: 1.3rem;
        margin-bottom: 0.5rem;
    }
    
    .controls {
        gap: 0.3rem;
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn, .select {
        padding: 0.7rem;
        font-size: 1rem;
    }
    
    .main {
        padding: 0.5rem;
    }
    
    .media-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.5rem;
    }
    
    .dropzone {
        padding: 2rem 1rem;
        margin: 1rem 0;
    }
    
    .modal-content {
        max-width: 95vw;
        max-height: 95vh;
    }
    
    .modal-close {
        top: -2.5rem;
        font-size: 1.5rem;
    }
    
    .nav-btn {
        font-size: 1.5rem;
        width: 2.5rem;
        height: 2.5rem;
        padding: 0.5rem;
    }
    
    .modal-details {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .media-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .controls {
        gap: 0.5rem;
    }
    
    .btn, .select {
        padding: 0.8rem;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .media-thumbnail {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Touch-friendly interactions */
@media (hover: none) and (pointer: coarse) {
    .media-item {
        transform: none;
    }
    
    .media-item:active {
        transform: scale(0.98);
    }
    
    .btn:active {
        transform: scale(0.98);
    }
}