/* Light Theme (Default) */
[data-theme="light"] {
    --bg-main: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-glass: rgba(0, 0, 0, 0.03);
    
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-glow: rgba(79, 70, 229, 0.15);
    
    --accent: #7c3aed;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #0284c7;
    
    --text-main: #0f172a;
    --text-muted: #334155;
    --text-dim: #64748b;
    
    --border-color: #e2e8f0;
    --border-hover: #818cf8;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    
    --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --shadow-glow: 0 0 20px rgba(79, 70, 229, 0.12);
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    --card-traffic-bg: #f1f5f9;
    --card-traffic-border: #cbd5e1;
    --card-body-bg: #f8fafc;
    --code-bg: #0f172a;
    --code-text: #38bdf8;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-main: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.75);
    --bg-glass: rgba(255, 255, 255, 0.04);
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.3);
    
    --accent: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(99, 102, 241, 0.4);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
    
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    --card-traffic-bg: rgba(99, 102, 241, 0.08);
    --card-traffic-border: rgba(99, 102, 241, 0.2);
    --card-body-bg: rgba(0, 0, 0, 0.2);
    --code-bg: #090d16;
    --code-text: #a7f3d0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    background-image: 
        radial-gradient(at 10% 10%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
        radial-gradient(at 90% 90%, rgba(14, 165, 233, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 12px 24px 12px;
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.logo h2 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 24px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    text-align: left;
}

.nav-item:hover {
    background: var(--bg-glass);
    color: var(--text-main);
}

.nav-item.active {
    background: var(--primary-glow);
    color: var(--primary);
    border: 1px solid var(--border-hover);
    font-weight: 600;
}

.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

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

/* Main Content */
.content {
    flex: 1;
    padding: 32px 40px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    overflow-y: auto;
}

/* Header Top Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-title h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-main);
}

.subtitle {
    font-size: 0.88rem;
    color: var(--text-muted);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #fff;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    opacity: 0.95;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: var(--bg-glass);
    border-color: var(--border-hover);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.btn-outline:hover {
    color: var(--text-main);
    border-color: var(--border-hover);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.25);
}

.btn-danger:hover {
    background: var(--danger);
    color: #fff;
}

/* Stats Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-card);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.purple { background: rgba(124, 58, 237, 0.12); color: var(--accent); }
.stat-icon.green { background: rgba(16, 185, 129, 0.12); color: var(--success); }
.stat-icon.blue { background: rgba(79, 70, 229, 0.12); color: var(--primary); }
.stat-icon.orange { background: rgba(245, 158, 11, 0.12); color: var(--warning); }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}

/* Tab Contents */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.section-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-main);
}

.search-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    width: 260px;
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 0.88rem;
    width: 100%;
}

/* Proxy Cards List */
.proxy-cards-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.proxy-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
}

.proxy-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.card-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.proxy-title h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge-info { background: rgba(79, 70, 229, 0.15); color: var(--primary); }
.badge-traffic { background: rgba(124, 58, 237, 0.15); color: var(--accent); border: 1px solid rgba(124, 58, 237, 0.25); }

.card-body-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    background: var(--card-body-bg);
    border-radius: var(--radius-sm);
    padding: 16px;
    border: 1px solid var(--border-color);
}

.card-traffic-row {
    display: flex;
    gap: 24px;
    background: var(--card-traffic-bg);
    border: 1px solid var(--card-traffic-border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
}

.traffic-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
}

.traffic-item label {
    color: var(--text-muted);
}

.traffic-item span {
    font-weight: 700;
    color: var(--primary);
}

.info-block {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 0.78rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.info-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.92rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.arrow {
    color: var(--primary);
    font-weight: bold;
}

.card-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Traffic Charts & Dashboard */
.traffic-overview-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-card);
}

.traffic-chart-header h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-main);
}

.chart-bars-container {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    height: 220px;
    padding-top: 30px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.bar-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    height: 100%;
    justify-content: flex-end;
}

.bar-inner {
    width: 100%;
    max-width: 42px;
    background: linear-gradient(to top, var(--primary), var(--accent));
    border-radius: 6px 6px 0 0;
    transition: height 0.5s ease;
    min-height: 6px;
    position: relative;
    cursor: pointer;
}

.bar-inner:hover {
    background: linear-gradient(to top, var(--accent), #c084fc);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.4);
}

.bar-inner:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    top: -36px;
    left: 50%;
    transform: translateX(-50%);
    background: #0f172a;
    color: #38bdf8;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    z-index: 20;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.bar-date {
    font-size: 0.78rem;
    color: var(--text-dim);
    font-weight: 500;
}

.traffic-table-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-card);
}

.margin-top-28 { margin-top: 28px; }

.table-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-main);
}

.table-responsive {
    overflow-x: auto;
}

.traffic-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.traffic-table th {
    background: var(--card-body-bg);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.78rem;
    letter-spacing: 0.5px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.traffic-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    white-space: nowrap;
}

.traffic-table tbody tr:hover {
    background: var(--bg-glass);
}

/* Glass Form Panel */
.glass-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-card);
}

.form-header {
    margin-bottom: 28px;
}

.form-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-main);
}

.form-header p {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.full-width {
    grid-column: span 2;
}

.form-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--primary);
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
    margin-top: 12px;
}

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

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-group input[type="text"],
.form-group input[type="number"] {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-main);
    font-size: 0.92rem;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.help-text {
    font-size: 0.78rem;
    color: var(--text-dim);
}

.switches-group {
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: var(--card-body-bg);
    padding: 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.switch-item {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.switch-item input {
    display: none;
}

.slider {
    width: 40px;
    height: 22px;
    background: #cbd5e1;
    border-radius: 20px;
    position: relative;
    transition: var(--transition);
}

.slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: var(--transition);
}

.switch-item input:checked + .slider {
    background: var(--primary);
}

.switch-item input:checked + .slider::before {
    transform: translateX(18px);
}

.switch-label {
    font-size: 0.88rem;
    color: var(--text-main);
}

.form-actions {
    margin-top: 32px;
    display: flex;
    justify-content: flex-end;
    gap: 14px;
}

/* Settings List */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--card-body-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.setting-info h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
    color: var(--text-main);
}

.setting-info p {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* Modal */
.modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-backdrop.active {
    display: flex;
}

.modal-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tab-buttons {
    display: flex;
    gap: 10px;
}

.tab-btn {
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
}

.tab-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.code-container {
    background: var(--code-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    overflow-x: auto;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--code-text);
    max-height: 400px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

@media (max-width: 900px) {
    .app-container { flex-direction: column; }
    .sidebar { width: 100%; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .form-grid { grid-template-columns: 1fr; }
    .full-width { grid-column: span 1; }
}