/* ==========================================================================
   Intelligent Traffic Flow Predictor & Route Optimizer CSS
   Matches the design system of the original Flask application screenshots.
   Primary Theme Accent: Teal-Blue / Cyan (#00c0a3)
   ========================================================================== */

:root {
    --bg-app: #080b11;
    --bg-sidebar: #05070a;
    --bg-card: #0b0f19;
    --bg-subcard: #101625;
    --border-color: #1b2230;
    --text-main: #f0f3f6;
    --text-grey: #8a96a3;
    
    /* Primary brand theme: Blue-Teal/Cyan */
    --color-green: #00c0a3; 
    --color-green-hover: #00a88f;
    --color-amber: #d29922;
    --color-amber-hover: #b8841a;
    --color-red: #f85149;
    --color-red-hover: #da3633;
    --color-cyan: #00c0a3;
    --color-cyan-hover: #00a38b;
    --color-blue: #1f6feb;
    
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-heading: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 13px;
    height: 100vh;
    overflow: hidden;
}

/* ==========================================================================
   App Layout Grid
   ========================================================================== */

.app-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    height: 100vh;
    width: 100vw;
}

/* ==========================================================================
   Left Sidebar Navigation
   ========================================================================== */

.app-sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 24px 16px;
    z-index: 100;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 32px;
}

.brand-logo {
    background-color: var(--color-green); /* Teal-blue */
    color: white;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 15px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    box-shadow: 0 0 10px rgba(0, 192, 163, 0.3);
}

.brand-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 0.5px;
    color: var(--text-main);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.nav-item {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-grey);
    padding: 10px 14px;
    text-align: left;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
}

.nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.04);
}

.nav-item.active {
    color: white;
    background-color: rgba(0, 192, 163, 0.12); /* Teal-blue background */
    border: 1px solid rgba(0, 192, 163, 0.25);
}

.nav-item.active .nav-icon {
    color: var(--color-green); /* Teal-blue icon */
}

.nav-icon {
    font-size: 14px;
    width: 20px;
    display: inline-flex;
    justify-content: center;
}

.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 16px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
}

.sys-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-indicator {
    width: 6px;
    height: 6px;
    background-color: #56d364; /* Keep green for system online */
    border-radius: 50%;
    box-shadow: 0 0 8px #56d364;
    animation: statusPulse 1.5s infinite;
}

.status-text {
    display: flex;
    flex-direction: column;
}

.status-title {
    font-size: 10px;
    font-weight: 700;
    color: #56d364;
    letter-spacing: 0.5px;
}

.status-location {
    font-size: 9px;
    color: var(--text-grey);
}

/* ==========================================================================
   Main Content Pages
   ========================================================================== */

.app-main {
    height: 100%;
    overflow-y: auto;
    position: relative;
}

.tab-pane {
    display: none;
    padding: 24px;
    height: 100%;
    overflow-y: auto;
}

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

.tab-pane-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.pane-category {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-grey);
    letter-spacing: 1px;
}

.pane-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: white;
    margin-top: 4px;
}

.pane-meta {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-grey);
    letter-spacing: 0.5px;
}

/* ==========================================================================
   Live Network View & Banner Grid
   ========================================================================== */

.dashboard-banner-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.banner-info-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
}

.banner-tag {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-grey);
    letter-spacing: 0.8px;
}

.banner-heading {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 700;
    line-height: 1.2;
    color: white;
    margin: 8px 0 12px 0;
}

.banner-description {
    font-size: 12px;
    color: var(--text-grey);
    line-height: 1.6;
}

.quick-stats-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.stat-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: white;
}

.stat-label {
    font-size: 9px;
    font-weight: 600;
    color: var(--text-grey);
    margin-top: 4px;
    letter-spacing: 0.5px;
}

/* Congestion map & Segment telemetry grid */
.live-network-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
    align-items: start;
}

.map-card, .telemetry-card, .optimizer-controls-card, .optimizer-map-card, 
.predictions-controls-card, .chart-card, .summary-stats-card, .incidents-report-card, 
.incidents-list-card, .comparison-card, .specs-card, .comparison-chart-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.card-header {
    background-color: rgba(255, 255, 255, 0.01);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-category {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-grey);
    letter-spacing: 0.5px;
    display: block;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    color: white;
    margin-top: 2px;
}

.card-body {
    padding: 20px;
}

.map-wrapper {
    padding: 0;
    position: relative;
}

.leaflet-map-container {
    height: 380px;
    width: 100%;
}

/* Custom legend float */
.map-legend {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background-color: rgba(11, 15, 25, 0.85);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 10px;
    color: var(--text-grey);
    display: flex;
    gap: 12px;
    z-index: 1000;
}

.legend-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.legend-dot.green { background-color: #2ea44f; }
.legend-dot.orange { background-color: var(--color-amber); }
.legend-dot.red { background-color: var(--color-red); }

/* Segment Telemetry Cards */
.telemetry-list {
    max-height: 380px;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.telemetry-item-card {
    background-color: var(--bg-subcard);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: border-color 0.2s ease;
}

.telemetry-item-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

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

.telemetry-id {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 13px;
    color: white;
}

.telemetry-metrics {
    font-size: 11px;
    color: var(--text-grey);
}

/* Badges */
.badge-status {
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

.badge-status.free-flow { background-color: rgba(46, 164, 79, 0.12); color: #2ea44f; border: 1px solid rgba(46, 164, 79, 0.25); }
.badge-status.heavy { background-color: rgba(210, 153, 34, 0.12); color: var(--color-amber); border: 1px solid rgba(210, 153, 34, 0.25); }
.badge-status.gridlock { background-color: rgba(248, 81, 73, 0.12); color: var(--color-red); border: 1px solid rgba(248, 81, 73, 0.25); }

/* ==========================================================================
   Form Components
   ========================================================================== */

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 14px;
}

.form-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-item label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-grey);
    text-transform: uppercase;
}

.custom-select, .custom-input {
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 12px;
    border-radius: 6px;
    font-family: inherit;
    font-size: 12px;
    outline: none;
    transition: all 0.2s ease;
    width: 100%;
}

.custom-select:focus, .custom-input:focus {
    border-color: var(--color-green);
}

.form-item-checkbox {
    margin: 16px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-grey);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input {
    display: none;
}

.custom-checkbox {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-sidebar);
    border-radius: 4px;
    display: inline-block;
    position: relative;
}

.checkbox-label input:checked + .custom-checkbox {
    background-color: var(--color-green);
    border-color: var(--color-green);
}

.checkbox-label input:checked + .custom-checkbox::after {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 10px;
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Buttons */
.btn {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 12px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.btn-small {
    padding: 6px 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

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

.btn-large {
    padding: 12px 16px;
    width: 100%;
}

.btn-green {
    background-color: var(--color-green);
    color: white;
}

.btn-green:hover {
    background-color: var(--color-green-hover);
    box-shadow: 0 0 10px rgba(0, 192, 163, 0.25);
}

.btn-amber {
    background-color: var(--color-amber);
    color: white;
}

.btn-amber:hover {
    background-color: var(--color-amber-hover);
    box-shadow: 0 0 10px rgba(210, 153, 34, 0.25);
}

.form-disclaimer {
    font-size: 10px;
    color: var(--text-grey);
    margin-top: 14px;
    line-height: 1.4;
    text-transform: uppercase;
}

/* ==========================================================================
   Route Optimizer Layout
   ========================================================================== */

.route-optimizer-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 20px;
    align-items: start;
}

.optimizer-map-card .leaflet-map-container {
    height: 480px;
}

/* Results panel inside optimizer */
.results-box {
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    animation: slideDown 0.3s ease;
}

.results-title {
    font-size: 12px;
    font-weight: 600;
    color: white;
    margin-bottom: 12px;
}

.results-stats-row {
    display: flex;
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 14px;
}

.res-stat {
    flex: 1;
    padding: 10px;
    text-align: center;
    border-right: 1px solid var(--border-color);
}

.res-stat:last-child {
    border-right: none;
}

.res-stat-label {
    display: block;
    font-size: 9px;
    font-weight: 600;
    color: var(--text-grey);
    margin-bottom: 2px;
}

.res-stat-value {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 700;
    color: white;
}

.results-nodes-trail {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.trail-title {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-grey);
}

.nodes-trail-flow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 6px;
}

.trail-badge {
    background-color: rgba(0, 192, 163, 0.12);
    border: 1px solid rgba(0, 192, 163, 0.25);
    color: white;
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.trail-arrow {
    color: var(--text-grey);
    font-size: 9px;
}

/* ==========================================================================
   Predictions Layout & Grid
   ========================================================================== */

.predictions-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
    align-items: start;
}

.predictions-results-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    height: 220px;
}

/* Forecast Summary 5 stats grid card */
.summary-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.summary-stat-box {
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

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

.summary-lbl {
    display: block;
    font-size: 9px;
    font-weight: 600;
    color: var(--text-grey);
    letter-spacing: 0.5px;
}

.summary-val {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    display: inline-block;
    border: 1px solid transparent;
}

.summary-val.val-green {
    background-color: rgba(0, 192, 163, 0.1);
    color: #56d364;
    border-color: rgba(0, 192, 163, 0.2);
}

.summary-val.val-amber {
    background-color: rgba(210, 153, 34, 0.1);
    color: #e3b341;
    border-color: rgba(210, 153, 34, 0.2);
}

.summary-val.val-cyan {
    background-color: rgba(31, 111, 235, 0.1);
    color: #58a6ff;
    border-color: rgba(31, 111, 235, 0.2);
}

/* Range Slider */
.slider-item {
    margin: 16px 0;
}

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

.slider-value-badge {
    background-color: rgba(0, 192, 163, 0.12);
    border: 1px solid rgba(0, 192, 163, 0.25);
    color: var(--color-cyan);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
}

.range-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background-color: var(--border-color);
    outline: none;
    margin: 10px 0 6px 0;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-cyan);
    cursor: pointer;
    box-shadow: 0 0 8px rgba(0, 192, 163, 0.5);
    transition: transform 0.1s ease;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

.slider-ticks {
    display: flex;
    justify-content: space-between;
    font-size: 9px;
    color: var(--text-grey);
    padding: 0 2px;
}

/* ==========================================================================
   Incidents Layout
   ========================================================================== */

.incidents-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
    align-items: start;
}

.incident-feed-list {
    max-height: 360px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.incident-entry-card {
    background-color: var(--bg-subcard);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--color-red);
    border-radius: 6px;
    padding: 12px 14px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

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

.inc-road-name {
    font-weight: 700;
    color: white;
}

.inc-desc-text {
    font-size: 11px;
    color: var(--text-grey);
}

.inc-meta-row {
    font-size: 10px;
    color: var(--text-grey);
}

.inc-severity-label {
    text-transform: uppercase;
    font-weight: 700;
}

.inc-severity-label.severe { color: var(--color-red); }
.inc-severity-label.moderate { color: var(--color-amber); }
.inc-severity-label.minor { color: #2ea44f; }

.btn-resolve-inc {
    background: transparent;
    border: none;
    color: var(--text-grey);
    cursor: pointer;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.btn-resolve-inc:hover {
    color: #2ea44f;
    background-color: rgba(46, 164, 79, 0.1);
}

/* ==========================================================================
   Analytics Layout
   ========================================================================== */

.analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

.analytics-left-col {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.table-wrapper {
    padding: 0;
}

.analytics-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 11px;
}

.analytics-table th, .analytics-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.analytics-table th {
    background-color: rgba(255, 255, 255, 0.01);
    color: var(--text-grey);
    font-weight: 600;
    text-transform: uppercase;
}

.analytics-table tbody tr:last-child td {
    border-bottom: none;
}

.specs-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.spec-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.spec-row span {
    color: var(--text-grey);
}

.spec-row strong {
    color: white;
}

/* ==========================================================================
   Map Layers & Custom Styles
   ========================================================================== */

/* Dark Map Tiles Filter */
.leaflet-tile-container img {
    filter: invert(100%) hue-rotate(180deg) brightness(85%) contrast(85%) saturate(110%);
    opacity: 0.8;
}

/* Custom leaflet popup stylings */
.leaflet-popup-content-wrapper {
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 6px !important;
    font-family: var(--font-sans) !important;
    font-size: 11px !important;
}

.leaflet-popup-tip {
    background-color: var(--bg-card) !important;
    border: 1px solid var(--border-color) !important;
}

/* Dynamic animations */
@keyframes statusPulse {
    0% { opacity: 0.5; box-shadow: 0 0 0 0 rgba(46, 164, 79, 0.4); }
    70% { opacity: 1; box-shadow: 0 0 0 6px rgba(46, 164, 79, 0); }
    100% { opacity: 0.5; box-shadow: 0 0 0 0 rgba(46, 164, 79, 0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.hidden {
    display: none !important;
}

/* Responsive layout adjustments */
@media (max-width: 1024px) {
    .app-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
    }
    .app-sidebar {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 12px 20px;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    .sidebar-brand {
        margin-bottom: 0;
    }
    .sidebar-nav {
        flex-direction: row;
    }
    .sidebar-footer {
        display: none;
    }
    .dashboard-banner-grid, .live-network-grid, .route-optimizer-grid, .predictions-grid, .incidents-grid, .analytics-grid {
        grid-template-columns: 1fr;
    }
}