* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --primary-hover: #357abd;
    --success-color: #4caf50;
    --danger-color: #f44336;
    --bg-color: #f5f5f5;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 10px;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.upload-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.upload-area {
    border: 2px dashed var(--primary-color);
    border-radius: 8px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    background-color: rgba(74, 144, 226, 0.05);
    border-color: var(--primary-hover);
}

.upload-area.dragover {
    background-color: rgba(74, 144, 226, 0.1);
    border-color: var(--primary-hover);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.upload-content p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.upload-hint {
    font-size: 0.9rem !important;
    color: var(--text-secondary) !important;
}

.upload-progress {
    text-align: center;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    width: 0;
    transition: width 0.3s ease;
}

.progress-text {
    color: var(--text-secondary);
}

.gallery-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.gallery-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.gallery-header h2 {
    font-size: 1.8rem;
}

.refresh-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.refresh-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.refresh-btn svg {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.image-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.image-preview {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.image-info {
    padding: 15px;
}

.image-link {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.image-link input {
    flex: 1;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
    background-color: var(--bg-color);
}

.copy-btn {
    margin-left: 8px;
    padding: 8px 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.copy-btn:hover {
    background-color: var(--primary-hover);
}

.image-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.delete-btn {
    padding: 6px 12px;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.delete-btn:hover {
    background-color: #d32f2f;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
    color: var(--border-color);
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .gallery {
        grid-template-columns: 1fr;
    }
}