:root {
    --primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-solid: #667eea;
    --secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --danger: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated gradient background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.15) 0%, transparent 50%);
    z-index: -1;
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    margin-bottom: 30px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
}

.account-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.account-id {
    font-size: 12px;
    color: var(--text-secondary);
    background: rgba(102, 126, 234, 0.1);
    padding: 6px 12px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
}

/* Main Content */
.main-content {
    display: grid;
    gap: 30px;
}

.scanner-section {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

.scanner-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.video-container,
.preview-container {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
    aspect-ratio: 4/3;
}

.preview-container {
    display: flex;
    flex-direction: column;
}

.preview-container h3 {
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 10;
    font-size: 14px;
    font-weight: 600;
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 16px;
    border-radius: 8px;
}

video,
canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

#overlayCanvas {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

/* Controls */
.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 500;
}

.control-group .value {
    color: var(--primary-solid);
    font-weight: 600;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-card-hover);
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.5);
    transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--shadow-glow);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.5);
    transition: all 0.3s ease;
}

/* Buttons */
.button-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

/* Gallery */
.gallery-section {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

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

.gallery-header h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
}

.gallery-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.design-count {
    font-size: 14px;
    color: var(--text-secondary);
    background: rgba(102, 126, 234, 0.1);
    padding: 8px 16px;
    border-radius: 8px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-card);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary-solid);
}

.gallery-item img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    display: block;
}

.gallery-item-info {
    padding: 12px;
    background: rgba(0, 0, 0, 0.3);
}

.gallery-item-info .timestamp {
    font-size: 12px;
    color: var(--text-secondary);
}

.empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    text-align: center;
}

.empty-state svg {
    opacity: 0.3;
    margin-bottom: 20px;
}

.empty-state p {
    margin-bottom: 8px;
}

.empty-state .hint {
    font-size: 14px;
    opacity: 0.7;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    background: var(--bg-card);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(0, 0, 0, 0.5);
    color: white;
    font-size: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.modal-close:hover {
    background: var(--danger);
    transform: rotate(90deg);
}

#modalImage {
    max-width: 100%;
    max-height: 70vh;
    border-radius: 12px;
    margin-bottom: 20px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 16px 24px;
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary-solid);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 2000;
    max-width: 350px;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left-color: #4facfe;
}

.notification.error {
    border-left-color: #fa709a;
}

/* Responsive */
@media (max-width: 768px) {
    .scanner-container {
        grid-template-columns: 1fr;
    }
    
    .button-group {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .gallery-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .gallery-actions {
        width: 100%;
        justify-content: space-between;
    }
}

/* Loading animation */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}