:root {
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #2481cc;
    --tg-theme-button-color: #2481cc;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #f4f4f5;
    
    --success-color: #4CAF50;
    --error-color: #F44336;
    --warning-color: #FF9800;
    --border-radius: 12px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    padding-bottom: 20px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 16px;
}

/* Header */
.header {
    text-align: center;
    padding: 24px 16px;
    background: linear-gradient(135deg, var(--tg-theme-button-color), #1a6aa8);
    color: white;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    box-shadow: var(--shadow-lg);
}

.header-icon {
    font-size: 48px;
    margin-bottom: 8px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.subtitle {
    font-size: 14px;
    opacity: 0.9;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: var(--tg-theme-secondary-bg-color);
    padding: 4px;
    border-radius: var(--border-radius);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: none;
    background: transparent;
    color: var(--tg-theme-hint-color);
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.tab-btn.active {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    box-shadow: var(--shadow);
}

.tab-icon {
    font-size: 18px;
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scanner */
.scanner-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto 16px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

#qr-reader {
    width: 100%;
    border: none;
}

#qr-reader video {
    border-radius: var(--border-radius);
}

.scanner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scan-region {
    width: 70%;
    height: 70%;
    border: 3px solid var(--tg-theme-button-color);
    border-radius: 16px;
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.3);
    animation: scannerPulse 2s ease-in-out infinite;
}

@keyframes scannerPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.02); opacity: 0.8; }
}

.scanner-status {
    text-align: center;
    padding: 12px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--tg-theme-hint-color);
}

.status-icon {
    font-size: 20px;
    margin-right: 8px;
}

/* Input */
.input-container {
    background: var(--tg-theme-secondary-bg-color);
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.input-container label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--tg-theme-text-color);
}

.input-container input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--tg-theme-secondary-bg-color);
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 16px;
    background: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    transition: border-color 0.3s ease;
    text-transform: uppercase;
}

.input-container input:focus {
    outline: none;
    border-color: var(--tg-theme-button-color);
}

/* Buttons */
.btn {
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    box-shadow: var(--shadow);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
}

.btn-secondary:active {
    transform: scale(0.98);
}

/* Results */
.result-section {
    margin-top: 24px;
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-card {
    background: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.result-header {
    padding: 24px;
    text-align: center;
    background: linear-gradient(135deg, var(--success-color), #45a049);
    color: white;
}

.result-header.error {
    background: linear-gradient(135deg, var(--error-color), #e53935);
}

.result-header.warning {
    background: linear-gradient(135deg, var(--warning-color), #fb8c00);
}

.result-icon {
    font-size: 64px;
    margin-bottom: 12px;
    animation: popIn 0.5s ease;
}

@keyframes popIn {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.result-header h2 {
    font-size: 22px;
    font-weight: 700;
}

.result-photo {
    padding: 16px;
    text-align: center;
    background: var(--tg-theme-secondary-bg-color);
}

.result-photo img {
    max-width: 200px;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: var(--shadow-lg);
}

.result-details {
    padding: 20px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--tg-theme-secondary-bg-color);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
    font-weight: 500;
}

.detail-value {
    font-size: 15px;
    font-weight: 600;
    color: var(--tg-theme-text-color);
    text-align: right;
    max-width: 60%;
    word-break: break-word;
}

.detail-value.mono {
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.status-badge.approved {
    background: #e8f5e9;
    color: var(--success-color);
}

.status-badge.revoked {
    background: #ffebee;
    color: var(--error-color);
}

.result-card .btn {
    margin: 20px;
    width: calc(100% - 40px);
}

/* Stats */
.stats-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 24px;
}

.stat-card {
    background: var(--tg-theme-secondary-bg-color);
    padding: 16px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--tg-theme-button-color);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--tg-theme-hint-color);
    font-weight: 500;
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay p {
    font-size: 16px;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 12px;
    }
    
    .header {
        padding: 20px 12px;
    }
    
    .header h1 {
        font-size: 20px;
    }
    
    .stats-section {
        gap: 8px;
    }
    
    .stat-card {
        padding: 12px;
    }
    
    .stat-value {
        font-size: 24px;
    }
}