:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --success-color: #22c55e;
    --error-color: #ef4444;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #818cf8, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* Card Styles */
.card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.badge {
    background-color: rgba(99, 102, 241, 0.1);
    color: #818cf8;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Input Styles */
textarea {
    width: 100%;
    height: 200px;
    background-color: #020617;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    color: var(--text-primary);
    font-family: monospace;
    resize: vertical;
    outline: none;
    transition: border-color 0.2s;
    font-size: 0.95rem;
}

textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Controls */
.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    gap: 1rem;
}

.upload-control {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-name {
    color: var(--text-secondary);
    font-size: 0.875rem;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Buttons */
button, .secondary-btn {
    cursor: pointer;
    border: none;
    font-family: inherit;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    min-width: 140px;
}

.primary-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.primary-btn:active {
    transform: translateY(0);
}

.primary-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.secondary-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.secondary-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.clear-btn {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 0.375rem;
}

.clear-btn:hover {
    color: var(--error-color);
    background-color: rgba(239, 68, 68, 0.1);
}

.small-btn {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

/* Status Bar */
.status-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    background-color: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

.status-bar.error {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

/* Grid Layout */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.grid-item {
    background-color: var(--card-bg);
    border-radius: 0.75rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.image-wrapper {
    position: relative;
    aspect-ratio: 1; /* Square aspect ratio or match template */
    background-color: #0f172a;
    overflow: hidden;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* or contain depending on need */
}

.index-badge {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.25rem 0.6rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
}

.item-info {
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-top: 1px solid var(--border-color);
}

.url-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    max-width: 180px;
}

.action-btn {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.25rem;
    border-radius: 0.25rem;
}

.action-btn:hover {
    color: var(--primary-color);
    background-color: rgba(99, 102, 241, 0.1);
}

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

/* Spinner */
.spinner {
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top: 2px solid #ffffff;
    width: 16px;
    height: 16px;
    animation: spin 1s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .primary-btn {
        width: 100%;
    }
}