/* Modern Minimalist Design System */
:root {
    --bg-main: #0b0f17;
    --bg-sidebar: #0f1523;
    --bg-card: #141c2e;
    --bg-card-hover: #192339;
    --border-color: #212d45;
    --border-subtle: #1a2438;
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-primary: #38bdf8;
    --accent-success: #34d399;
    --accent-warning: #fbbf24;
    --accent-indigo: #818cf8;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scrollbar-width: thin;
    scrollbar-color: #212d45 var(--bg-main);
}

/* Custom Minimalist Scrollbar (WebKit) */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: #212d45;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #38bdf8;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
    width: 100%;
}

.app-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    overflow-x: clip;
    width: 100%;
}

/* Sidebar Backdrop */
.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(11, 15, 23, 0.75);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.sidebar-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* Sidebar Navigation */
.sidebar {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    flex-shrink: 0;
    z-index: 999;
}

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

.sidebar-brand-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    width: 34px;
    height: 34px;
    background-color: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.logo-mark.small {
    width: 28px;
    height: 28px;
}

.close-sidebar-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 6px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
}

.close-sidebar-btn:hover {
    color: var(--text-primary);
    background-color: var(--border-subtle);
}

.brand-title {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: var(--text-primary);
}

.sidebar-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    flex: 1;
    overflow-y: auto;
}

.filter-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
}

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

.filter-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-group select {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    outline: none;
    min-height: 40px;
    transition: border-color 0.15s ease;
}

.filter-group select:focus {
    border-color: var(--accent-primary);
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    min-height: 40px;
    transition: all 0.15s ease;
    margin-top: 8px;
}

.btn-secondary:hover {
    background-color: var(--border-subtle);
    color: var(--text-primary);
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-subtle);
}

.version-label {
    font-size: 11px;
    color: var(--text-muted);
}

/* Main Panel */
.main-panel {
    flex: 1;
    margin-left: 260px;
    padding: 28px 36px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-width: 0;
}

.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 8px;
    flex-wrap: wrap;
    gap: 16px;
}

.mobile-top-bar {
    display: none;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 8px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-subtle);
}

.mobile-menu-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--accent-primary);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mobile-menu-toggle:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.mobile-brand {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-titles h1 {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.4px;
    color: var(--text-primary);
}

.header-titles p {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
}

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

.btn-notebook {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-primary);
    background-color: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.25);
    padding: 6px 14px;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-notebook:hover {
    background-color: rgba(56, 189, 248, 0.18);
    border-color: rgba(56, 189, 248, 0.45);
    color: #e0f2fe;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-success);
    background-color: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.2);
    padding: 6px 12px;
    border-radius: 20px;
}

.status-indicator .dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-success);
    border-radius: 50%;
}

/* Metrics Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.metric-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: border-color 0.15s ease;
    min-width: 0;
}

.metric-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.metric-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.metric-icon {
    color: var(--text-muted);
    display: flex;
    align-items: center;
}

.metric-value {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    margin-top: 4px;
}

.metric-value.highlight {
    color: var(--accent-success);
}

.metric-meta {
    font-size: 11px;
    color: var(--text-muted);
}

/* Visual Cards */
.visuals-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

.viz-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
    max-width: 100%;
    width: 100%;
    overflow: hidden;
}

.viz-card.col-span-2 {
    grid-column: span 2;
}

.viz-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

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

.viz-body {
    position: relative;
    height: 260px;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0;
    overflow: hidden;
}

canvas {
    max-width: 100% !important;
    width: 100% !important;
    display: block;
}

/* Data Table */
.table-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

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

.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
}

.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 12px;
    width: 200px;
}

.table-container {
    overflow-x: auto;
    max-height: 320px;
    max-width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    text-align: left;
}

th {
    background-color: var(--bg-sidebar);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 14px;
    position: sticky;
    top: 0;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

tbody tr:hover {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
}

code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 11px;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent-primary);
}

@media (max-width: 1200px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .visuals-grid {
        grid-template-columns: 1fr;
    }
    .viz-card.col-span-2 {
        grid-column: span 1;
    }
}

@media (max-width: 900px) {
    .mobile-top-bar {
        display: flex;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        max-width: 85vw;
        height: 100vh;
        transform: translateX(-100%);
        transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.5);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .close-sidebar-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .main-panel {
        margin-left: 0;
        padding: 20px 16px;
        gap: 20px;
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }

    .top-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    .table-header {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .search-box {
        width: 100%;
    }

    .search-box input {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .main-panel {
        padding: 16px 12px;
        gap: 16px;
    }

    .header-titles h1 {
        font-size: 18px;
    }

    .header-titles p {
        font-size: 12px;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .metric-card {
        padding: 14px;
    }

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

    .metric-label {
        font-size: 11px;
    }

    .viz-card {
        padding: 14px;
    }

    .viz-body {
        height: 220px;
    }

    .table-card {
        padding: 14px;
    }

    .table-container {
        -webkit-overflow-scrolling: touch;
    }

    th, td {
        padding: 8px 10px;
        font-size: 12px;
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .header-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .btn-notebook, .status-indicator {
        justify-content: center;
        width: 100%;
    }

    .table-container {
        max-height: 380px;
    }
}

/* Operational UI State Utilities */
.hidden {
    display: none !important;
}

.error-banner {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fca5a5;
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 16px;
    backdrop-filter: blur(8px);
}

.error-banner strong {
    color: #f87171;
}

.error-banner code {
    background: rgba(15, 23, 42, 0.6);
    color: #38bdf8;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 12px;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: #cbd5e1;
    font-size: 14px;
    font-weight: 500;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3.5px solid rgba(99, 102, 241, 0.2);
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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