:root {
    --bg-dark: #0b0f19;
    --bg-card: rgba(18, 26, 43, 0.7);
    --bg-card-hover: rgba(26, 38, 63, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(59, 130, 246, 0.3);
    
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --primary-glow: rgba(59, 130, 246, 0.35);
    
    --accent-purple: #8b5cf6;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;

    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dim: #6b7280;

    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;

    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.12) 0px, transparent 50%);
    color: var(--text-main);
    font-family: var(--font-sans);
    min-height: 100vh;
    padding: 24px;
    line-height: 1.5;
}

.app-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Glassmorphism panel styling */
.glass-panel {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glass);
}

/* Header */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    box-shadow: 0 0 20px var(--primary-glow);
}

.brand-text h1 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-text .subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 20px;
    font-size: 13px;
    color: var(--accent-emerald);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-emerald);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

/* Control Panel & Form */
.control-panel {
    padding: 20px 24px;
}

.search-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-group select, 
.input-group input,
.input-sm {
    background: rgba(10, 15, 26, 0.8);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

.input-group select:focus, 
.input-group input:focus,
.input-sm:focus {
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--primary-glow);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 8px;
    padding: 8px;
    overflow-x: auto;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(139, 92, 246, 0.3));
    border: 1px solid var(--border-accent);
}

/* Tab Panes */
.tab-pane {
    display: none;
}

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

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.metric-card {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.metric-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.metric-icon.blue { background: rgba(59, 130, 246, 0.15); color: var(--primary); }
.metric-icon.purple { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.metric-icon.emerald { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.metric-icon.amber { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }

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

.metric-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 20px;
    font-weight: 700;
}

.metric-sub {
    font-size: 12px;
    color: var(--text-dim);
}

/* Details Cards */
.overview-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.detail-card {
    padding: 20px;
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.data-flow-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.badge {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.badge.blue { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.badge.purple { background: rgba(139, 92, 246, 0.2); color: #c4b5fd; }
.badge.emerald { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; }
.badge.amber { background: rgba(245, 158, 11, 0.2); color: #fde68a; }

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

.meta-item {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

/* Section Tree Layout */
.panel-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 20px;
    min-height: 550px;
}

@media (max-width: 900px) {
    .panel-layout {
        grid-template-columns: 1fr;
    }
}

.tree-sidebar, .tree-preview {
    display: flex;
    flex-direction: column;
    padding: 20px;
    overflow: hidden;
}

.sidebar-header, .preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 12px;
}

.tree-view {
    overflow-y: auto;
    max-height: 500px;
    font-size: 13px;
}

.tree-node {
    margin-left: 12px;
}

.tree-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    user-select: none;
    transition: background 0.15s ease;
}

.tree-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tree-item.active {
    background: rgba(59, 130, 246, 0.2);
    color: #93c5fd;
}

.tree-icon {
    color: var(--accent-amber);
}

.tree-icon.file {
    color: var(--primary);
}

/* Page Reader */
.reader-container {
    padding: 24px;
}

.reader-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
    margin-bottom: 20px;
}

.reader-controls {
    display: flex;
    gap: 8px;
}

.reader-body {
    min-height: 400px;
}

.block-card {
    background: rgba(10, 15, 26, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 14px;
}

.block-card h4 {
    font-size: 15px;
    color: var(--primary);
    margin-bottom: 8px;
}

.procedure-step {
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--accent-purple);
    padding: 10px 14px;
    margin-top: 8px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 13px;
}

.data-table th, .data-table td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.data-table th {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
}

.link-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.page-link-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.2s ease;
}

.page-link-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--primary);
    color: #fff;
    transform: translateX(4px);
}

.page-link-btn i {
    color: var(--primary);
}

/* JSON Viewer */
.json-viewer-container {
    padding: 20px;
}

.json-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.json-body {
    background: rgba(5, 8, 15, 0.9);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    max-height: 600px;
    overflow: auto;
}

.json-code {
    font-family: var(--font-mono);
    font-size: 13px;
    color: #a7f3d0;
    white-space: pre-wrap;
}

/* API Docs */
.api-docs-container {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.endpoint-card {
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-mono);
}

.endpoint-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
}

.endpoint-badge.get { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.endpoint-badge.post { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }

.snippet-box {
    background: rgba(5, 8, 15, 0.9);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 13px;
    margin-top: 10px;
    margin-bottom: 10px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-dim);
    padding: 60px 20px;
    text-align: center;
}

/* Drill-Down Layout */
.drill-down-container {
    padding: 20px;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.drill-down-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.drill-down-header h3 {
    font-size: 18px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 14px;
}

.breadcrumb-item {
    cursor: pointer;
    color: var(--primary);
    transition: color 0.2s;
}

.breadcrumb-item:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: var(--text-main);
    font-weight: 600;
    cursor: default;
    text-decoration: none;
}

.breadcrumb-separator {
    color: var(--text-muted);
}

/* Drill-Down Body */
.drill-down-body {
    flex: 1;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.category-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.category-card:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.category-icon {
    font-size: 28px;
    color: var(--accent-amber);
}

.category-icon.file {
    color: var(--primary);
}

.category-label {
    font-size: 14px;
    font-weight: 500;
}