:root {
    /* Base — Light Maritime */
    --color-base: #f0f4f8;
    --color-glass: rgba(255, 255, 255, 0.92);
    --color-glass-border: rgba(44, 62, 80, 0.1);
    --color-glass-hover: rgba(44, 62, 80, 0.05);
    --blur: 12px;
    --radius: 10px;
    --radius-sm: 6px;
    --padding: 14px 18px;
    --shadow: 0 1px 4px rgba(0, 0, 0, 0.08);

    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #7f8c8d;

    /* Accent */
    --color-blue: #2980b9;
    --color-green: #27ae60;
    --color-red: #c0392b;
    --color-orange: #e67e22;
    --color-purple: #8e44ad;
    --color-teal: #16a085;
    --color-deep-orange: #d35400;
    --color-gray: #7f8c8d;
    --color-gray-light: #95a5a6;

    /* Vessel type colors */
    --color-cargo: var(--color-orange);
    --color-tanker: var(--color-red);
    --color-passenger: var(--color-blue);
    --color-fishing: var(--color-green);
    --color-sailing: var(--color-purple);
    --color-highspeed: var(--color-deep-orange);
    --color-special: var(--color-teal);
    --color-other: var(--color-gray);
    --color-unknown: var(--color-gray-light);

    /* Font */
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--color-base);
    color: var(--text-primary);
    overflow: hidden;
}

#app {
    position: relative;
    width: 100vw;
    height: 100vh;
}

#map {
    position: absolute;
    inset: 0;
    z-index: 0;
}

#panels {
    position: absolute;
    inset: 0;
    z-index: 100;
    pointer-events: none;
}

#panels > * {
    pointer-events: auto;
}

/* ── Glass panel ── */

.glass-panel {
    background: var(--color-glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius);
    padding: var(--padding);
    box-shadow: var(--shadow);
    animation: fadeIn 150ms ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ── Nav bar ── */

.nav-bar {
    position: absolute;
    top: 16px;
    left: 16px;
    display: inline-flex;
    gap: 4px;
    padding: 6px 8px;
    z-index: 200;
}

.nav-bar a {
    padding: 4px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: color 0.15s, background 0.15s;
}

.nav-bar a:hover {
    color: var(--text-secondary);
    background: var(--color-glass-hover);
}

.nav-bar a.active {
    color: var(--color-blue);
    background: rgba(52, 152, 219, 0.15);
    font-weight: 600;
}

/* ── Status badge ── */

.status-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 12px;
    color: var(--text-secondary);
    z-index: 200;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-light);
    flex-shrink: 0;
}

.status-dot.receiving {
    background: var(--color-green);
    box-shadow: 0 0 4px rgba(39, 174, 96, 0.4);
    animation: pulse 2s infinite;
}

.status-dot.stale,
.status-dot.no_data {
    background: var(--color-red);
    box-shadow: 0 0 4px rgba(192, 57, 43, 0.3);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ── Stat cards ── */

.stat-cards {
    position: absolute;
    bottom: 16px;
    left: 16px;
    display: flex;
    gap: 8px;
    z-index: 200;
}

.stat-card {
    padding: var(--padding);
    min-width: 100px;
}

.stat-card .label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

/* ── Category badge ── */

.category-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
}

/* ── Slide-out panel ── */

#slideout-container {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    z-index: 300;
    pointer-events: none;
    overflow: hidden;
}

.slideout {
    position: absolute;
    inset: 0;
    background: var(--color-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-left: 1px solid var(--color-glass-border);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.08);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    pointer-events: auto;
    transform: translateX(100%);
    transition: transform 200ms ease-out;
    overflow-y: auto;
}

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

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

.slideout-header .label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.slideout-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-glass-hover);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 16px;
    cursor: pointer;
}

.slideout-close:hover {
    color: var(--text-primary);
}

.slideout .vessel-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.slideout .vessel-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.slideout .stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.slideout .stat-cell {
    background: var(--color-glass-hover);
    padding: 10px;
    border-radius: 8px;
}

.slideout .stat-cell .label {
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.slideout .stat-cell .value {
    font-size: 12px;
    color: var(--text-primary);
    margin-top: 2px;
}

.slideout .track-preview {
    background: var(--color-glass-hover);
    padding: 10px;
    border-radius: 8px;
}

.slideout .track-preview .label {
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.slideout .actions {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.btn-primary {
    padding: 8px;
    text-align: center;
    background: rgba(52, 152, 219, 0.15);
    color: var(--color-blue);
    border: 1px solid rgba(52, 152, 219, 0.3);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.btn-primary:hover {
    background: rgba(52, 152, 219, 0.25);
}

.btn-row {
    display: flex;
    gap: 6px;
}

.btn-secondary {
    flex: 1;
    padding: 6px;
    text-align: center;
    color: var(--text-muted);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-sm);
    font-size: 11px;
    cursor: pointer;
    text-decoration: none;
    background: none;
}

.btn-secondary:hover {
    color: var(--text-primary);
    border-color: rgba(148, 163, 184, 0.25);
}

/* ── Dashboard-specific ── */

.dashboard-toolbar {
    position: absolute;
    top: 60px;
    left: 16px;
    display: flex;
    gap: 8px;
    align-items: center;
    z-index: 200;
}

.dashboard-toolbar input {
    background: var(--color-glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-sm);
    padding: 6px 12px;
    color: var(--text-primary);
    font-size: 12px;
    font-family: var(--font);
}

.dashboard-toolbar input::placeholder {
    color: var(--text-muted);
}

.dashboard-charts {
    position: absolute;
    bottom: 16px;
    right: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 200;
    max-width: 380px;
}

.chart-panel {
    padding: 12px 14px;
}

.chart-panel .label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.chart-range-btns {
    display: flex;
    gap: 4px;
    margin-bottom: 8px;
}

.chart-range-btns button {
    padding: 3px 10px;
    border: 1px solid var(--color-glass-border);
    border-radius: 4px;
    background: none;
    color: var(--text-muted);
    font-size: 10px;
    cursor: pointer;
    font-family: var(--font);
}

.chart-range-btns button.active {
    background: rgba(52, 152, 219, 0.15);
    color: var(--color-blue);
    border-color: rgba(52, 152, 219, 0.3);
}

.type-bar-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    margin-bottom: 6px;
}

.type-bar-row .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.type-bar-row .name {
    color: var(--text-secondary);
    flex: 1;
    min-width: 0;
}

.type-bar-row .bar-track {
    flex: 2;
    height: 6px;
    background: var(--color-glass-hover);
    border-radius: 3px;
    overflow: hidden;
}

.type-bar-row .bar-fill {
    height: 100%;
    border-radius: 3px;
}

.type-bar-row .count {
    color: var(--text-primary);
    font-weight: 600;
    min-width: 28px;
    text-align: right;
}

/* ── Live-specific ── */

.live-counter {
    position: absolute;
    bottom: 16px;
    left: 16px;
    padding: 8px 14px;
    font-size: 13px;
    z-index: 200;
}

.live-counter .value {
    font-weight: 700;
    color: var(--text-primary);
}

.live-vessel-list {
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 240px;
    max-height: 300px;
    overflow-y: auto;
    padding: 10px;
    z-index: 200;
}

.live-vessel-list .label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.live-vessel-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 0;
    border-bottom: 1px solid var(--color-glass-border);
    font-size: 11px;
    cursor: pointer;
}

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

.live-vessel-item:hover {
    color: var(--text-primary);
}

.live-vessel-item .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.live-vessel-item .name {
    font-weight: 600;
    color: var(--text-secondary);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.live-vessel-item .time {
    color: var(--text-muted);
    font-size: 9px;
}

/* ── Vessels list view ── */

.vessels-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 250;
}

.vessels-panel {
    width: 92%;
    max-width: 1200px;
    height: 82vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.vessels-header h2 {
    font-size: 18px;
    font-weight: 700;
}

.vessels-controls {
    padding: 12px 20px;
    border-bottom: 1px solid var(--color-glass-border);
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.vessels-search {
    flex: 1;
    min-width: 200px;
    padding: 6px 12px;
    background: var(--color-glass-hover);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font);
}

.vessels-search::placeholder {
    color: var(--text-muted);
}

.group-toggle {
    padding: 6px 12px;
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-sm);
    background: none;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    font-family: var(--font);
}

.group-toggle.active {
    background: rgba(52, 152, 219, 0.15);
    color: var(--color-blue);
    border-color: rgba(52, 152, 219, 0.3);
}

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

.vessels-body {
    flex: 1;
    overflow-y: auto;
}

.vessel-table {
    width: 100%;
    border-collapse: collapse;
}

.vessel-table th {
    position: sticky;
    top: 0;
    background: rgba(241, 245, 249, 0.98);
    color: var(--text-secondary);
    padding: 10px 12px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    user-select: none;
    border-bottom: 1px solid var(--color-glass-border);
}

.vessel-table th:hover {
    color: var(--text-primary);
}

.vessel-table th.sorted-asc::after { content: ' \2191'; }
.vessel-table th.sorted-desc::after { content: ' \2193'; }

.vessel-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--color-glass-border);
    font-size: 12px;
    color: var(--text-secondary);
}

.vessel-table tr:hover td {
    background: var(--color-glass-hover);
}

.vessel-table .clickable {
    cursor: pointer;
}

.vessel-table a {
    color: var(--color-blue);
    text-decoration: none;
    font-size: 11px;
}

.vessel-table a:hover {
    text-decoration: underline;
}

.group-header td {
    background: rgba(44, 62, 80, 0.05);
    font-weight: 600;
    font-size: 12px;
    color: var(--text-primary);
    padding: 8px 12px;
}

/* ── Vessel detail view ── */

.vessel-detail-panel {
    position: absolute;
    top: 60px;
    left: 16px;
    bottom: 16px;
    width: 350px;
    overflow-y: auto;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.vessel-detail-panel .vessel-name {
    font-size: 22px;
    font-weight: 700;
}

.vessel-detail-panel .vessel-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.vessel-detail-panel .stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.vessel-detail-panel .stat-cell {
    background: var(--color-glass-hover);
    padding: 10px;
    border-radius: 8px;
}

.vessel-detail-panel .stat-cell .label {
    font-size: 9px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.vessel-detail-panel .stat-cell .value {
    font-size: 13px;
    color: var(--text-primary);
    margin-top: 2px;
}

.vessel-detail-panel .section-title {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.vessel-detail-panel select {
    width: 100%;
    padding: 6px 10px;
    background: var(--color-glass-hover);
    border: 1px solid var(--color-glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 12px;
    font-family: var(--font);
}

.vessel-detail-panel select option {
    background: white;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    font-family: var(--font);
}

.back-btn:hover {
    color: var(--text-primary);
}

/* ── Error toast ── */

.error-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--color-glass);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid rgba(192, 57, 43, 0.25);
    color: var(--color-red);
    box-shadow: var(--shadow);
    padding: 10px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    z-index: 9000;
    animation: fadeIn 150ms ease-out;
    transition: opacity 400ms;
}

.error-toast.fade-out {
    opacity: 0;
}

/* ── Empty state ── */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
}

.empty-state .icon {
    font-size: 32px;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* ── Scrollbar (dark) ── */

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(44, 62, 80, 0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(44, 62, 80, 0.3); }

/* ── Leaflet overrides ── */

.leaflet-top.leaflet-right {
    top: 46px;
}

.leaflet-control-zoom a {
    background: var(--color-glass) !important;
    color: var(--text-secondary) !important;
    border-color: var(--color-glass-border) !important;
    box-shadow: var(--shadow) !important;
}

.leaflet-control-layers {
    background: var(--color-glass) !important;
    border-color: var(--color-glass-border) !important;
    color: var(--text-secondary) !important;
    box-shadow: var(--shadow) !important;
}

.leaflet-popup-content-wrapper {
    background: var(--color-glass) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius) !important;
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--color-glass-border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12) !important;
}

.leaflet-popup-tip {
    background: var(--color-glass) !important;
}

.vessel-popup h3 {
    color: var(--text-primary);
    margin-bottom: 6px;
}

.vessel-popup p {
    color: var(--text-secondary);
    font-size: 12px;
    margin: 3px 0;
}

.vessel-popup .external-links {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.vessel-popup .external-links a {
    padding: 3px 8px;
    font-size: 11px;
    color: var(--color-blue);
    border: 1px solid rgba(52, 152, 219, 0.3);
    border-radius: 4px;
    text-decoration: none;
}

.vessel-popup .external-links a:hover {
    background: rgba(52, 152, 219, 0.15);
}

/* ── Screen reader only ── */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}