:root {
    --primary: #00d4ff;
    --primary-dark: #00a8cc;
    --secondary: #7b2cbf;
    --accent: #ff006e;
    --bg-dark: #0a0e17;
    --bg-card: #111827;
    --bg-card-hover: #1a2234;
    --border: #1e3a5f;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --glow: 0 0 20px rgba(0, 212, 255, 0.3);
    --glow-accent: 0 0 30px rgba(255, 0, 110, 0.4);
}

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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(123, 44, 191, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-dark) 0%, #0d1424 100%);
    pointer-events: none;
    z-index: -1;
}

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 32px;
    color: var(--primary);
    animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { text-shadow: 0 0 10px var(--primary); }
    50% { text-shadow: 0 0 20px var(--primary), 0 0 30px var(--primary); }
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-badge {
    font-size: 12px;
    padding: 4px 10px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    border-radius: 20px;
    color: white;
    font-weight: 500;
}

.header-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--warning);
    animation: pulse 1.5s ease-in-out infinite;
}

.status-indicator.online {
    background: var(--success);
    box-shadow: 0 0 10px var(--success);
}

.status-indicator.offline {
    background: var(--error);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-text {
    font-size: 14px;
    color: var(--text-muted);
}

/* Main Layout */
.main-content {
    display: flex;
    flex: 1;
}

/* Sidebar */
.sidebar {
    width: 220px;
    background: rgba(17, 24, 39, 0.6);
    border-right: 1px solid var(--border);
    padding: 24px 16px;
    position: sticky;
    top: 73px;
    height: calc(100vh - 73px);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-item:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--text);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(123, 44, 191, 0.15));
    color: var(--primary);
    border: 1px solid var(--border);
}

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

/* Content Area */
.content-area {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

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

/* Welcome Card */
.welcome-card {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 44, 191, 0.1));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 24px;
    text-align: center;
}

.welcome-card h1 {
    font-size: 28px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-card p {
    color: var(--text-muted);
    font-size: 16px;
}

/* Quick Stats */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: var(--primary);
    box-shadow: var(--glow);
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--primary);
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Quick Actions */
.quick-actions {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.quick-actions h3 {
    margin-bottom: 16px;
    color: var(--text);
}

.action-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Buttons */
.btn, .action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-card-hover);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover, .action-btn:hover {
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.btn.primary, .action-btn.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary);
    color: var(--bg-dark);
    font-weight: 600;
}

.btn.primary:hover, .action-btn.primary:hover {
    box-shadow: var(--glow);
    transform: translateY(-2px);
}

.btn.danger {
    border-color: var(--error);
    color: var(--error);
}

.btn.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-small:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-icon {
    font-size: 16px;
}

/* API Key Section */
.api-key-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.api-key-section h3 {
    margin-bottom: 16px;
}

.api-key-display {
    display: flex;
    gap: 12px;
}

.api-key-display input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}

.api-key-display input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Upload Area */
.upload-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.upload-zone {
    background: var(--bg-card);
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 48px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(0, 212, 255, 0.05);
}

.upload-icon {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 16px;
}

.upload-text {
    font-size: 16px;
    color: var(--text);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 12px;
    color: var(--text-muted);
}

.preview-area {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-area img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: 8px;
}

.remove-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-btn:hover {
    border-color: var(--error);
    color: var(--error);
}

/* Options */
.ocr-options {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.option-group label {
    font-size: 14px;
    color: var(--text-muted);
}

.option-group select, .option-group input[type="number"] {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
    min-width: 150px;
}

.option-group select:focus, .option-group input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Switch */
.switch {
    position: relative;
    width: 48px;
    height: 26px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 26px;
    transition: 0.3s;
}

.slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: 0.3s;
}

input:checked + .slider {
    background: var(--primary);
    border-color: var(--primary);
}

input:checked + .slider::before {
    transform: translateX(22px);
    background: var(--bg-dark);
}

/* Action Row */
.action-row {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

/* Result Area */
.result-area {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.result-header h3 {
    font-size: 18px;
}

.result-stats {
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: var(--text-muted);
}

.result-stats strong {
    color: var(--primary);
}

.result-content {
    max-height: 400px;
    overflow-y: auto;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.result-text {
    font-size: 16px;
    line-height: 1.8;
    white-space: pre-wrap;
}

.result-detail {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 16px;
}

.result-actions {
    display: flex;
    gap: 12px;
}

/* Page Header */
.page-header {
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 24px;
    margin-bottom: 8px;
}

.page-header p {
    color: var(--text-muted);
}

/* Result Tabs */
.result-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.tab {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab:hover, .tab.active {
    border-color: var(--primary);
    color: var(--primary);
}

/* History */
.history-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.history-filters input, .history-filters select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}

.history-filters input {
    flex: 1;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 16px;
    align-items: center;
}

.history-item:hover {
    border-color: var(--primary);
}

.history-thumb {
    width: 100px;
    height: 70px;
    object-fit: cover;
    border-radius: 8px;
}

.history-info h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.history-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.history-actions {
    display: flex;
    gap: 8px;
}

.empty-state {
    text-align: center;
    padding: 48px;
    color: var(--text-muted);
}

/* Performance Tests */
.perf-tests {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.perf-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.perf-card h3 {
    margin-bottom: 16px;
    font-size: 18px;
}

.perf-options {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.perf-results {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.perf-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-item {
    text-align: center;
}

.stat-item .stat-label {
    display: block;
    margin-bottom: 8px;
}

.stat-item .stat-value {
    font-size: 24px;
    color: var(--primary);
}

.perf-chart {
    height: 200px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 16px 0;
}

.perf-bar {
    flex: 1;
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
    border-radius: 4px 4px 0 0;
    transition: height 0.3s ease;
    min-height: 4px;
}

/* Settings */
.settings-group {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.settings-group h3 {
    margin-bottom: 16px;
    font-size: 16px;
    color: var(--text-muted);
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.setting-item label {
    width: 120px;
    font-size: 14px;
    color: var(--text-muted);
}

.setting-item input[type="text"] {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}

.setting-item input[readonly] {
    opacity: 0.6;
    cursor: not-allowed;
}

.setting-item select {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}

.setting-item input[type="range"] {
    flex: 1;
}

/* Range */
input[type="range"] {
    -webkit-appearance: none;
    height: 6px;
    background: var(--bg-dark);
    border-radius: 3px;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
}

/* Footer */
.footer {
    display: flex;
    justify-content: space-between;
    padding: 16px 24px;
    background: rgba(17, 24, 39, 0.6);
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 23, 0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 24px;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1001;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--error);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        top: 0;
    }
    
    .nav-menu {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .upload-area {
        grid-template-columns: 1fr;
    }
    
    .perf-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Logs Page */
.logs-toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.logs-toolbar input, .logs-toolbar select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 14px;
}

.logs-toolbar input {
    flex: 1;
    min-width: 200px;
}

.logs-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.log-stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px 24px;
    text-align: center;
    min-width: 100px;
}

.log-stat.info {
    border-color: var(--primary);
}

.log-stat.warn {
    border-color: var(--warning);
}

.log-stat.error {
    border-color: var(--error);
}

.log-stat-value {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
}

.log-stat-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.logs-list {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    max-height: 500px;
    overflow-y: auto;
}

.log-item {
    display: grid;
    grid-template-columns: 140px 60px 1fr 80px 80px;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    align-items: center;
}

.log-item:last-child {
    border-bottom: none;
}

.log-item:hover {
    background: rgba(0, 212, 255, 0.05);
}

.log-time {
    color: var(--text-muted);
    font-family: monospace;
}

.log-level {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-align: center;
}

.log-level.INFO {
    background: rgba(0, 212, 255, 0.15);
    color: var(--primary);
}

.log-level.WARN {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.log-level.ERROR {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.log-path {
    font-family: monospace;
    color: var(--text);
}

.log-status {
    font-weight: 600;
}

.log-status.success {
    color: var(--success);
}

.log-status.warn {
    color: var(--warning);
}

.log-status.error {
    color: var(--error);
}

.log-time-ms {
    text-align: right;
    color: var(--text-muted);
}

.log-extra {
    grid-column: 1 / -1;
    padding: 8px 12px;
    background: var(--bg-dark);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-muted);
    font-family: monospace;
    word-break: break-all;
}