:root {
    --bg: #ffffff;
    --bg-secondary: #f9f9f9;
    --text: #000000;
    --text-muted: #666666;
    --border: #cccccc;
    --border-dark: #333333;
    --input-bg: #ffffff;
    --input-border: #cccccc;
    --tooltip-bg: rgba(255, 255, 255, 0.95);
    --tooltip-border: #333333;
    --ping-label-bg: rgba(255, 255, 255, 0.85);
    --ping-label-color: #000000;
    --queue-bg: #fff3cd;
    --queue-color: #856404;
    --queue-border: #ffeeba;
    --btn-disabled-bg: #cccccc;
    --th-bg: #f0f0f0;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #1a1a1a;
        --bg-secondary: #252525;
        --text: #e0e0e0;
        --text-muted: #999999;
        --border: #444444;
        --border-dark: #666666;
        --input-bg: #2a2a2a;
        --input-border: #555555;
        --tooltip-bg: rgba(30, 30, 30, 0.97);
        --tooltip-border: #666666;
        --ping-label-bg: rgba(0, 0, 0, 0.75);
        --ping-label-color: #e0e0e0;
        --queue-bg: #3a3000;
        --queue-color: #ffd54f;
        --queue-border: #5a4a00;
        --btn-disabled-bg: #444444;
        --th-bg: #2a2a2a;
    }
}

[data-theme="dark"] {
    --bg: #1a1a1a;
    --bg-secondary: #252525;
    --text: #e0e0e0;
    --text-muted: #999999;
    --border: #444444;
    --border-dark: #666666;
    --input-bg: #2a2a2a;
    --input-border: #555555;
    --tooltip-bg: rgba(30, 30, 30, 0.97);
    --tooltip-border: #666666;
    --ping-label-bg: rgba(0, 0, 0, 0.75);
    --ping-label-color: #e0e0e0;
    --queue-bg: #3a3000;
    --queue-color: #ffd54f;
    --queue-border: #5a4a00;
    --btn-disabled-bg: #444444;
    --th-bg: #2a2a2a;
}

body {
    font-family: Arial, sans-serif;
    max-width: 1050px;
    margin: 0 auto;
    padding: 20px;
}

#servers {
    width: 100%;
    border: 1px solid var(--border);
    padding: 10px;
    margin: 20px 0;
    background-color: var(--bg-secondary);
}

#servers th {
    background-color: var(--th-bg);
}

#servers tr {
    margin: 5px 0;
    padding: 5px;
    border-left: 3px solid #007bff;
    background-color: var(--bg);
}

#servers td {
    text-align: center;
}

#servers td.location {
    text-align: left;
    white-space: nowrap;
}

#servers td.location .relay-sparkline {
    display: inline-block;
    margin-left: 6px;
    vertical-align: middle;
}

#servers td.location .relay-sparkline .sparkline {
    vertical-align: middle;
}

#servers td.location .relay-note {
    display: inline-block;
    margin-left: 8px;
    vertical-align: middle;
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.9em;
    cursor: pointer;
    max-width: 240px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#servers td.location .relay-note:hover {
    text-decoration: underline dotted;
}

/* TASK-1X-449: relay-reported software version, rendered with
   textContent (XSS-defence) into a span beside the location text.
   The "behind" class on the row highlights a fleet member whose
   reported version is strictly older than the fleet's newest version
   the master has seen in its process lifetime. The colour mirrors
   the operator-visible "needs attention" tone used elsewhere on
   the page (e.g. queueStatus) without competing with the
   packet-loss red used in the latency chart. */
#servers td.location .relay-version {
    display: inline-block;
    margin-left: 8px;
    vertical-align: middle;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
}

#servers tr.behind {
    border-left-color: #d97706;
}

#servers tr.behind td.location .relay-version {
    color: #d97706;
    font-weight: bold;
}

#servers td.stat-num {
    text-align: right;
    font-family: 'Courier New', monospace;
    white-space: nowrap;
}

.timestamp {
    color: var(--text-muted);
    font-size: 0.8em;
}

#hostInput {
    width: 200px;
    padding: 10px;
    margin-right: 5px;
    background-color: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
}

#portSelect {
    padding: 10px;
    margin-right: 5px;
    background-color: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
}

#customPort {
    width: 70px;
    padding: 10px;
    margin-right: 10px;
    background-color: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
}

.input-group {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 5px;
}

#groupFilterRow {
    margin: 10px 0;
}

#groupFilterRow label {
    margin-right: 6px;
    color: var(--text);
}

#groupFilter {
    padding: 6px 10px;
    background-color: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--input-border);
    min-width: 160px;
}

button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

button:disabled {
    background-color: var(--btn-disabled-bg);
    cursor: not-allowed;
}

#themeToggle {
    padding: 6px 12px;
    font-size: 0.85em;
    margin-left: auto;
}

.status {
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
}

.connected {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.disconnected {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

#queueStatus {
    display: none;
    padding: 10px;
    background: var(--queue-bg);
    color: var(--queue-color);
    border: 1px solid var(--queue-border);
    margin: 10px 0;
    border-radius: 4px;
}

#map-container {
    /* Break out of the parent container to use full viewport width */
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-top: 15px;
    position: relative;
}

#map {
    position: relative;
    width: 100%;
    aspect-ratio: 1050 / 444;
    overflow: hidden;
}

#map-inner {
    position: absolute;
    top: 0;
    left: 0;
    width: 1050px;
    height: 444px;
    transform-origin: top left;
    overflow: hidden;
    background: url('map.jpg') no-repeat;
    /* Original map: 90°N to 90°S (180°). We want 72°N to -55°S (127°) */
    /* Scale: 525px * 1.2 = 630px tall for better visibility */
    /* Top crop: (90-72)/180 * 630 = 63px */
    /* Visible height: (90+55)/180 * 630 - 63 = 507 - 63 = 444px */
    background-size: 1050px 630px;
    background-position: 0 -63px;
}

#map-inner > .marker {
    display: inline-block;
    position: absolute;
    width: 5px;
    height: 5px;
    background: yellow;
    border-radius: 3px;
    border: 1px solid #000;
}

#map-inner > .radius {
    display: inline-block;
    position: absolute;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 999px;
    border: 1px solid;
    transform: translate(-50%, -50%);
    margin-left: 3px;
    margin-top: 3px;
}

#map-inner > .ping-label {
    position: absolute;
    font-size: 10px;
    font-weight: bold;
    color: var(--ping-label-color);
    background: var(--ping-label-bg);
    padding: 1px 3px;
    border-radius: 2px;
    white-space: nowrap;
    pointer-events: none;
    margin-left: 8px;
    margin-top: -4px;
}

#map-inner > .marker {
    cursor: pointer;
    z-index: 10;
}

#mapTooltip {
    position: absolute;
    display: none;
    background: var(--tooltip-bg);
    border: 1px solid var(--tooltip-border);
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    z-index: 100;
    pointer-events: none;
    min-width: 140px;
    color: var(--text);
}

#mapTooltip .tooltip-header {
    font-weight: bold;
    font-size: 14px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 4px;
}

#mapTooltip .tooltip-row {
    display: flex;
    justify-content: space-between;
    margin: 2px 0;
}

#mapTooltip .tooltip-label {
    color: var(--text-muted);
    margin-right: 12px;
}

#mapTooltip .tooltip-value {
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

.master-status {
    margin: 10px 0;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 0.9em;
}

.master-status.error {
    color: var(--text-muted);
    font-style: italic;
}