/* ============================================================
   RelayStation Central — "Signal Console" design system
   Field-telemetry instrument aesthetic. Dual theme (light default,
   dark via :root[data-theme="dark"]). rs- prefix, body.rs-page scoped
   so the legacy classic dashboard below is untouched.
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root {
    /* light theme (warm instrument paper) */
    --rs-bg: #f4f5f2;
    --rs-surface: #ffffff;
    --rs-surface-2: #eef0ec;
    --rs-border: #e2e4df;
    --rs-border-strong: #cfd2cb;
    --rs-text: #14181c;
    --rs-muted: #5b636d;
    --rs-faint: #8a929c;
    --rs-accent: #0c9b62;      /* signal green */
    --rs-green: #0c9b62;
    --rs-amber: #b06f0c;
    --rs-red: #cf3b3b;
    --rs-blue: #2563eb;
    --rs-shadow: 0 1px 2px rgba(18,22,26,.04), 0 6px 20px rgba(18,22,26,.06);
    --rs-shadow-lg: 0 12px 40px rgba(18,22,26,.12);
    --rs-glow: none;
    --rs-radius: 10px;
    --rs-radius-sm: 7px;
    --rs-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --rs-sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

:root[data-theme="dark"] {
    /* dark theme (signal console — signature look) */
    --rs-bg: #0a0e13;
    --rs-surface: #10151d;
    --rs-surface-2: #161e29;
    --rs-border: #1f2833;
    --rs-border-strong: #2c3a48;
    --rs-text: #e7edf3;
    --rs-muted: #98a4b3;
    --rs-faint: #5e6b7a;
    --rs-accent: #33e0a1;      /* phosphor green */
    --rs-green: #33e0a1;
    --rs-amber: #f5b544;
    --rs-red: #ff5f57;
    --rs-blue: #4d9dff;
    --rs-shadow: 0 2px 8px rgba(0,0,0,.4), 0 10px 34px rgba(0,0,0,.34);
    --rs-shadow-lg: 0 16px 50px rgba(0,0,0,.5);
    --rs-glow: 0 0 18px -4px color-mix(in srgb, var(--rs-accent) 60%, transparent);
}

@media (prefers-reduced-motion: no-preference) {
    body.rs-page { scroll-behavior: smooth; }
}

body.rs-page {
    background: var(--rs-bg);
    color: var(--rs-text);
    font-family: var(--rs-sans);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    transition: background .25s ease, color .25s ease;
}
/* atmospheric backdrop: faint signal-grid + accent bloom (dark leans in) */
body.rs-page::before {
    content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background:
        radial-gradient(900px 500px at 88% -8%, color-mix(in srgb, var(--rs-accent) 8%, transparent), transparent 60%),
        linear-gradient(var(--rs-border) 1px, transparent 1px) 0 0 / 100% 44px,
        linear-gradient(90deg, var(--rs-border) 1px, transparent 1px) 0 0 / 44px 100%;
    opacity: .35;
    -webkit-mask-image: radial-gradient(1200px 700px at 50% -10%, #000 20%, transparent 75%);
            mask-image: radial-gradient(1200px 700px at 50% -10%, #000 20%, transparent 75%);
}

.rs-container { max-width: 1120px; margin: 0 auto; padding: 28px 24px 40px; }
.rs-page-title { font-size: 24px; font-weight: 600; letter-spacing: -.02em; margin: 0 0 4px; }
.rs-page-sub { font-size: 13px; color: var(--rs-muted); margin: 0 0 24px; }

/* section headers become instrument-panel labels with an accent tick */
.rs-section-head {
    font-family: var(--rs-mono);
    font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
    color: var(--rs-muted);
    margin: 34px 0 14px; padding-left: 13px; position: relative;
    display: flex; align-items: center; gap: 10px;
}
.rs-section-head::before {
    content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 3px; height: 13px; border-radius: 2px;
    background: var(--rs-accent); box-shadow: var(--rs-glow);
}
.rs-section-head::after {
    content: ''; flex: 1; height: 1px;
    background: linear-gradient(90deg, var(--rs-border), transparent);
}
.rs-muted { color: var(--rs-muted); }
.rs-meta { font-size: 13px; color: var(--rs-muted); }
.rs-num { font-family: var(--rs-mono); font-variant-numeric: tabular-nums; }

/* ----- Header / nav ----- */
.rs-header {
    background: color-mix(in srgb, var(--rs-surface) 82%, transparent);
    backdrop-filter: saturate(1.4) blur(12px);
    -webkit-backdrop-filter: saturate(1.4) blur(12px);
    border-bottom: 1px solid var(--rs-border);
    position: sticky; top: 0; z-index: 500;
}
.rs-header-inner {
    max-width: 1120px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; gap: 22px; height: 60px;
}
.rs-wordmark {
    font-family: var(--rs-mono); font-size: 14px; font-weight: 600; letter-spacing: -.01em;
    color: var(--rs-text); text-decoration: none; white-space: nowrap;
    display: inline-flex; align-items: center; gap: 9px;
}
.rs-wordmark::before {
    content: ''; width: 9px; height: 9px; border-radius: 50%; flex: none;
    background: var(--rs-accent); box-shadow: var(--rs-glow);
    animation: rs-pulse 2.4s ease-in-out infinite;
}
.rs-logo { height: 42px; width: auto; display: block; }
:root[data-theme="dark"] .rs-logo { filter: brightness(1.12) saturate(1.05); }
.rs-nav { display: flex; align-items: center; gap: 2px; flex: 1; }
.rs-nav a {
    color: var(--rs-muted); text-decoration: none; font-size: 14px; font-weight: 500;
    padding: 7px 12px; border-radius: var(--rs-radius-sm);
    transition: color .15s, background .15s;
}
.rs-nav a:hover { color: var(--rs-text); background: var(--rs-surface-2); }
.rs-nav a.active {
    color: var(--rs-text); font-weight: 600;
    background: color-mix(in srgb, var(--rs-accent) 12%, transparent);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--rs-accent) 30%, transparent);
}
.rs-bell, .rs-theme-toggle {
    position: relative; background: var(--rs-surface);
    border: 1px solid var(--rs-border); border-radius: var(--rs-radius-sm);
    width: 38px; height: 38px; cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    color: var(--rs-muted); font-family: inherit;
    transition: color .15s, border-color .15s, background .15s, transform .12s;
}
.rs-bell:hover, .rs-theme-toggle:hover {
    color: var(--rs-text); border-color: var(--rs-border-strong); background: var(--rs-surface-2);
}
.rs-bell:active, .rs-theme-toggle:active { transform: scale(.94); }
.rs-bell svg, .rs-theme-toggle svg { width: 18px; height: 18px; }
.rs-theme-toggle .rs-icon-sun { display: none; }
:root[data-theme="dark"] .rs-theme-toggle .rs-icon-sun { display: block; }
:root[data-theme="dark"] .rs-theme-toggle .rs-icon-moon { display: none; }
.rs-bell-badge {
    position: absolute; top: -6px; right: -6px;
    background: var(--rs-red); color: #fff;
    border-radius: 9px; min-width: 18px; height: 18px; padding: 0 5px;
    font-family: var(--rs-mono); font-size: 11px; font-weight: 600; line-height: 18px; text-align: center;
    box-shadow: 0 0 0 2px var(--rs-surface);
}

/* ----- Alert drawer ----- */
.rs-drawer-backdrop {
    position: fixed; inset: 0; background: rgba(6,9,13,.55);
    backdrop-filter: blur(2px); z-index: 900; display: none;
}
.rs-drawer {
    position: fixed; top: 0; right: 0; bottom: 0; width: 400px; max-width: 92vw;
    background: var(--rs-surface); border-left: 1px solid var(--rs-border);
    box-shadow: var(--rs-shadow-lg);
    z-index: 901; display: none; flex-direction: column;
    color: var(--rs-text); font-size: 14px;
}
.rs-drawer.open { display: flex; animation: rs-slide-in .22s cubic-bezier(.2,.8,.2,1); }
.rs-drawer.open, .rs-drawer-backdrop.open { display: flex; }
.rs-drawer-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px; border-bottom: 1px solid var(--rs-border);
}
.rs-drawer-head h3 { font-size: 16px; font-weight: 600; margin: 0; }
.rs-drawer-body { flex: 1; overflow-y: auto; padding: 16px; }
.rs-drawer-body .rs-incident { margin-bottom: 12px; }

/* ----- Status banner ----- */
.rs-banner {
    border-radius: var(--rs-radius); padding: 18px 22px;
    font-family: var(--rs-mono); font-size: 15px; font-weight: 600; letter-spacing: -.01em;
    display: flex; align-items: center; gap: 12px;
    border: 1px solid transparent;
}
.rs-banner::before {
    content: ''; width: 10px; height: 10px; border-radius: 50%; flex: none;
    background: currentColor; box-shadow: 0 0 12px -1px currentColor;
}
.rs-banner-green { color: var(--rs-green); background: color-mix(in srgb, var(--rs-green) 12%, var(--rs-surface)); border-color: color-mix(in srgb, var(--rs-green) 32%, transparent); }
.rs-banner-amber { color: var(--rs-amber); background: color-mix(in srgb, var(--rs-amber) 12%, var(--rs-surface)); border-color: color-mix(in srgb, var(--rs-amber) 32%, transparent); }
.rs-banner-red   { color: var(--rs-red);   background: color-mix(in srgb, var(--rs-red) 12%, var(--rs-surface));   border-color: color-mix(in srgb, var(--rs-red) 32%, transparent); }
.rs-asof { font-family: var(--rs-mono); font-size: 12px; color: var(--rs-faint); margin: 9px 2px 0; }

/* ----- Cards ----- */
.rs-card {
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius); padding: 18px; box-shadow: var(--rs-shadow);
    transition: border-color .18s, transform .18s, box-shadow .18s;
}
.rs-card + .rs-card { margin-top: 16px; }
.rs-card-title { font-size: 15px; font-weight: 600; margin: 0 0 12px; }

/* ----- Incident cards ----- */
.rs-incident {
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-left: 3px solid var(--rs-faint);
    border-radius: var(--rs-radius); padding: 14px 16px; box-shadow: var(--rs-shadow);
    display: flex; align-items: flex-start; gap: 12px;
    transition: border-color .18s, transform .18s;
}
.rs-incident:hover { transform: translateX(2px); }
.rs-incident + .rs-incident { margin-top: 8px; }
.rs-incident-critical { border-left-color: var(--rs-red); }
.rs-incident-warning { border-left-color: var(--rs-amber); }
.rs-incident-info { border-left-color: var(--rs-blue); }
.rs-incident-body { flex: 1; min-width: 0; }
.rs-incident-title { font-size: 14px; font-weight: 500; overflow-wrap: break-word; }
.rs-incident-meta { font-family: var(--rs-mono); font-size: 12px; color: var(--rs-muted); margin-top: 3px; }
.rs-link-btn {
    background: none; border: none; padding: 4px 0; cursor: pointer;
    color: var(--rs-accent); font-size: 13px; font-weight: 500; font-family: inherit;
    text-decoration: none; white-space: nowrap;
}
.rs-link-btn:hover { text-decoration: underline; }

/* ----- Stat tiles (instrument readouts) ----- */
.rs-tiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.rs-tile {
    position: relative; overflow: hidden;
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius); padding: 18px 18px 16px; box-shadow: var(--rs-shadow);
    transition: border-color .18s, transform .18s, box-shadow .18s;
}
.rs-tile::before {
    content: ''; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
    background: linear-gradient(90deg, var(--rs-accent), transparent 70%);
    opacity: .8;
}
.rs-tile:hover { transform: translateY(-3px); border-color: var(--rs-border-strong); box-shadow: var(--rs-shadow-lg); }
.rs-tile-value {
    font-family: var(--rs-mono); font-size: 30px; font-weight: 600; letter-spacing: -.02em;
    font-variant-numeric: tabular-nums; line-height: 1.1; color: var(--rs-text);
}
.rs-tile-label { font-size: 12px; color: var(--rs-muted); margin-top: 6px; letter-spacing: .01em; }

/* ----- Tables ----- */
.rs-table { width: 100%; border-collapse: collapse; }
.rs-table th {
    text-align: left; padding: 11px 14px;
    font-family: var(--rs-mono); font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
    color: var(--rs-muted); border-bottom: 1px solid var(--rs-border);
    background: transparent;
}
.rs-table td {
    padding: 12px 14px; font-size: 14px;
    border-bottom: 1px solid var(--rs-border); color: var(--rs-text);
    background: transparent;
}
.rs-table tbody tr { transition: background .12s; }
.rs-table tbody tr:last-child td { border-bottom: none; }
.rs-table tbody tr:hover { background: var(--rs-surface-2); }
.rs-table a { color: var(--rs-text); font-weight: 600; text-decoration: none; }
.rs-table a:hover { color: var(--rs-accent); }

.rs-dot {
    width: 8px; height: 8px; border-radius: 50%;
    display: inline-block; margin-right: 9px; vertical-align: middle;
    background: var(--rs-faint);
}
.rs-dot-online { background: var(--rs-green); box-shadow: 0 0 0 3px color-mix(in srgb, var(--rs-green) 22%, transparent); animation: rs-pulse 2.4s ease-in-out infinite; }
.rs-dot-offline { background: var(--rs-red); }
.rs-dot-degraded { background: var(--rs-amber); box-shadow: 0 0 0 3px color-mix(in srgb, var(--rs-amber) 22%, transparent); animation: rs-pulse 1.2s ease-in-out infinite; }
.rs-badge { font-family: var(--rs-mono); font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.rs-badge-ok { color: var(--rs-green); background: color-mix(in srgb, var(--rs-green) 14%, transparent); }
.rs-badge-warn { color: var(--rs-amber); background: color-mix(in srgb, var(--rs-amber) 16%, transparent); }
.rs-dot-never_seen { background: var(--rs-faint); }
/* Transport chip (WiFi / cellular) shown next to Last seen. */
.rs-tx { font-family: var(--rs-mono); font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 999px; white-space: nowrap; }
.rs-tx-wifi { color: var(--rs-accent); background: color-mix(in srgb, var(--rs-accent) 14%, transparent); }
.rs-tx-cell { color: var(--rs-muted); background: color-mix(in srgb, var(--rs-muted) 16%, transparent); }
.rs-dot-green { background: var(--rs-green); }
.rs-dot-amber { background: var(--rs-amber); }
.rs-dot-red { background: var(--rs-red); }

.rs-pill {
    display: inline-block; padding: 2px 9px; border-radius: 999px;
    font-family: var(--rs-mono); font-size: 11px; font-weight: 500; letter-spacing: .02em;
    background: var(--rs-surface-2); color: var(--rs-muted); border: 1px solid var(--rs-border);
    white-space: nowrap;
}
.rs-pill-green { background: color-mix(in srgb, var(--rs-green) 14%, transparent); color: var(--rs-green); border-color: color-mix(in srgb, var(--rs-green) 34%, transparent); }
.rs-pill-amber { background: color-mix(in srgb, var(--rs-amber) 14%, transparent); color: var(--rs-amber); border-color: color-mix(in srgb, var(--rs-amber) 34%, transparent); }
.rs-pill-red   { background: color-mix(in srgb, var(--rs-red) 14%, transparent);   color: var(--rs-red);   border-color: color-mix(in srgb, var(--rs-red) 34%, transparent); }

/* ----- Species marks -----
   The line art is carried in each PNG's ALPHA channel and painted with
   background-color through a mask, so one asset serves both themes and takes
   the surrounding text colour instead of fighting it. Every species shares a
   192x48 source canvas, so this fixed box aligns every row whether it holds an
   otter, a shark, or nothing. */
.rs-species {
    display: inline-block; vertical-align: -3px;
    width: 62px; height: 16px; margin-right: 9px; flex: none;
    background-color: var(--rs-muted);
    -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
    -webkit-mask-position: left center; mask-position: left center;
    -webkit-mask-size: contain; mask-size: contain;
}
/* Inferred from the frequency band, not recorded against this transmitter.
   Quieter on purpose: a convention must not read as a verified fact. */
.rs-species-guess { opacity: .45; }
/* Known species, no artwork yet — name it rather than invent a drawing.
   Keeps the icon's exact box (two short lines of 10px mono fit "Elephant
   seal"), because a variable-width label here would shove the frequency
   sideways on just those rows and break the column it is meant to lead. */
.rs-species-text {
    background: none; vertical-align: middle; overflow: hidden;
    font-family: var(--rs-mono); font-size: 9.5px; line-height: 1;
    font-weight: 600; letter-spacing: .06em; white-space: nowrap;
    color: var(--rs-faint);
    display: inline-flex; align-items: center;
}
.rs-species-none { background: none; }
@media (max-width: 600px) {
    .rs-species { width: 42px; height: 11px; margin-right: 7px; vertical-align: -1px; }
}

/* Registry picker: reads as text until you reach for it. */
.rs-species-pick {
    background: transparent; border: 1px solid transparent; border-radius: var(--rs-radius-sm);
    color: var(--rs-muted); font-family: var(--rs-sans); font-size: 12px;
    padding: 3px 4px; max-width: 130px;
}
.rs-species-pick:hover, .rs-species-pick:focus {
    border-color: var(--rs-border-strong); background: var(--rs-surface); color: var(--rs-text);
}

/* ----- Buttons ----- */
.rs-btn {
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius-sm); padding: 7px 13px;
    font-size: 13px; font-weight: 500; font-family: inherit;
    color: var(--rs-text); cursor: pointer;
    display: inline-flex; align-items: center; gap: 6px;
    transition: border-color .15s, background .15s, transform .12s;
}
.rs-btn:hover { border-color: var(--rs-border-strong); background: var(--rs-surface-2); }
.rs-btn:active { transform: scale(.97); }
.rs-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.rs-btn-primary {
    background: var(--rs-accent); border-color: var(--rs-accent);
    color: #05231a; font-weight: 600; box-shadow: var(--rs-glow);
}
:root:not([data-theme="dark"]) .rs-btn-primary { color: #fff; }
.rs-btn-primary:hover { background: color-mix(in srgb, var(--rs-accent) 88%, #000); border-color: color-mix(in srgb, var(--rs-accent) 88%, #000); }
.rs-btn-sm { padding: 4px 11px; font-size: 12px; }

/* ----- Kebab menu ----- */
.rs-kebab-wrap { position: relative; display: inline-block; }
.rs-menu {
    position: absolute; right: 0; top: calc(100% + 6px);
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius-sm); min-width: 168px; z-index: 700;
    display: none; padding: 5px; box-shadow: var(--rs-shadow-lg);
}
.rs-menu.open { display: block; animation: rs-pop .14s ease-out; }
.rs-menu button {
    display: block; width: 100%; text-align: left;
    background: none; border: none; border-radius: 6px;
    padding: 9px 11px; font-size: 13px; font-family: inherit;
    color: var(--rs-text); cursor: pointer; transition: background .12s;
}
.rs-menu button:hover { background: var(--rs-surface-2); }
.rs-menu button.rs-danger { color: var(--rs-red); }

/* ----- Segmented control (two-state settings, e.g. update frequency) -----
   A visible pair of states beats a menu -> prompt -> typed string for the one
   setting that gets changed in the field. 44px min touch target. */
.rs-seg {
    display: inline-flex; border: 1px solid var(--rs-border);
    border-radius: 999px; padding: 2px; background: var(--rs-surface-2);
    gap: 2px;
}
.rs-seg-btn {
    appearance: none; border: none; background: none; cursor: pointer;
    font-family: inherit; font-size: 12px; font-weight: 600; color: var(--rs-muted);
    padding: 6px 13px; border-radius: 999px; min-height: 30px;
    transition: background .12s, color .12s;
}
.rs-seg-btn:hover:not(.on) { color: var(--rs-text); }
.rs-seg-btn.on {
    background: var(--rs-accent); color: var(--rs-bg);
    box-shadow: 0 1px 3px rgba(0,0,0,.25);
}
/* Pending = queued but not yet applied. Deliberately still reads as "on" (the
   tap landed) while pulsing to say "not confirmed" — the honest middle state
   between intent and truth. */
.rs-seg-btn.on.pending {
    background: color-mix(in srgb, var(--rs-accent) 45%, var(--rs-surface-2));
    color: var(--rs-text);
}
@media (prefers-reduced-motion: no-preference) {
    .rs-seg-btn.on.pending { animation: rs-seg-pulse 1.4s ease-in-out infinite; }
}
@keyframes rs-seg-pulse { 50% { opacity: .58; } }
.rs-seg-btn:disabled { cursor: default; }
.rs-seg-btn:disabled:not(.on) { opacity: .45; }
.rs-seg-btn:focus-visible { outline: 2px solid var(--rs-accent); outline-offset: 2px; }
.rs-seg-unknown { font-size: 11px; margin-top: 3px; }
.rs-seg-note { font-size: 11px; margin-top: 4px; line-height: 1.4; max-width: 230px; }
.rs-seg-note.rs-seg-low { color: var(--rs-amber); }

/* ----- Visible per-row actions (replaces the kebab) ----- */
.rs-row-actions { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }

/* ----- Settings form (drawer) ----- */
.rs-cfg-field { padding: 14px 0; border-bottom: 1px solid var(--rs-border); }
.rs-cfg-field:last-child { border-bottom: none; }
.rs-cfg-label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 7px; }
.rs-cfg-flag { font-size: 10px; vertical-align: middle; margin-left: 4px; }
.rs-cfg-control { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.rs-cfg-control .rs-select, .rs-cfg-control .rs-input { flex: 1; min-width: 140px; min-height: 40px; }
.rs-cfg-unit { font-size: 12px; white-space: nowrap; }
.rs-cfg-help { font-size: 12px; margin-top: 6px; line-height: 1.45; }
.rs-cfg-status { font-size: 13px; padding: 0; }
.rs-cfg-status.ok, .rs-cfg-status.err {
    padding: 10px 12px; border-radius: var(--rs-radius-sm); margin-bottom: 12px;
}
.rs-cfg-status.ok  { background: color-mix(in srgb, var(--rs-green) 12%, transparent); color: var(--rs-green); }
.rs-cfg-status.err { background: color-mix(in srgb, var(--rs-red) 12%, transparent);   color: var(--rs-red); }

/* ----- Empty state ----- */
.rs-empty { padding: 26px; text-align: center; color: var(--rs-muted); font-size: 14px; }
.rs-empty .rs-btn { margin-top: 8px; }

/* ----- Anchor pills ----- */
.rs-anchors { display: flex; gap: 8px; margin: 18px 0 24px; flex-wrap: wrap; }
.rs-anchors a {
    padding: 7px 15px; border-radius: 999px; font-size: 13px; font-weight: 500;
    color: var(--rs-muted); text-decoration: none;
    border: 1px solid var(--rs-border); background: var(--rs-surface);
    transition: color .15s, border-color .15s, background .15s;
}
.rs-anchors a.active {
    color: var(--rs-accent); border-color: color-mix(in srgb, var(--rs-accent) 45%, transparent);
    background: color-mix(in srgb, var(--rs-accent) 12%, transparent); font-weight: 600;
}
.rs-anchors a:hover { color: var(--rs-text); border-color: var(--rs-border-strong); }
.rs-section { display: none; }
.rs-section.active { display: block; }

/* ----- Key-value grid ----- */
.rs-kv { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px 24px; }
.rs-kv-label { font-family: var(--rs-mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: var(--rs-muted); }
.rs-kv-value { font-family: var(--rs-mono); font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 3px; }

/* ----- Sparklines ----- */
.rs-sparkrow { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 16px; margin-top: 16px; }
.rs-spark-label { font-family: var(--rs-mono); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--rs-muted); margin-bottom: 4px; }
.rs-spark svg { display: block; width: 100%; height: 36px; }

/* ----- Map ----- */
.rs-map {
    height: 340px; border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius); overflow: hidden; box-shadow: var(--rs-shadow);
}
.rs-map .leaflet-container { height: 100%; background: var(--rs-surface-2); }
:root[data-theme="dark"] .rs-map .leaflet-tile { filter: invert(1) hue-rotate(180deg) brightness(.95) contrast(.92) saturate(.8); }
:root[data-theme="dark"] .rs-map .leaflet-container { background: #0d1218; }

/* ----- Charts / widgets ----- */
.rs-chart-svg { width: 100%; height: auto; display: block; }
.rs-latency-caption { font-family: var(--rs-mono); font-size: 11px; color: var(--rs-muted); margin-top: 6px; }
.rs-widget-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.rs-widget-grid .rs-card { margin-top: 0; }

/* ----- Form inputs ----- */
.rs-input, .rs-select {
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius-sm); padding: 8px 11px;
    font-size: 14px; font-family: inherit; color: var(--rs-text);
    transition: border-color .15s, box-shadow .15s;
}
.rs-input:focus, .rs-select:focus {
    outline: none; border-color: var(--rs-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--rs-accent) 22%, transparent);
}
.rs-input::placeholder { color: var(--rs-faint); }
.rs-field { margin-bottom: 12px; }
.rs-field label { display: block; font-family: var(--rs-mono); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; color: var(--rs-muted); margin-bottom: 5px; }
.rs-field-error { font-size: 12px; color: var(--rs-red); margin-top: 4px; }
.rs-filters { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }

/* ----- Accordions ----- */
.rs-details {
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius); margin-bottom: 16px; box-shadow: var(--rs-shadow);
}
.rs-details > summary {
    padding: 15px 16px; min-height: 44px; box-sizing: border-box;
    font-size: 15px; font-weight: 600; cursor: pointer;
    display: flex; align-items: center; gap: 8px; list-style: none;
}
.rs-details > summary::-webkit-details-marker { display: none; }
.rs-details > summary::before {
    content: '\25B8'; color: var(--rs-accent); font-size: 12px;
    transition: transform 0.15s;
}
.rs-details[open] > summary::before { transform: rotate(90deg); }
.rs-details > .rs-details-body { padding: 0 16px 16px; border-top: 1px solid var(--rs-border); padding-top: 16px; }

/* ----- Wizard steps ----- */
.rs-steps { list-style: none; margin: 0; padding: 0; counter-reset: rs-step; }
.rs-steps > li { counter-increment: rs-step; position: relative; padding: 0 0 20px 42px; }
.rs-steps > li::before {
    content: counter(rs-step);
    position: absolute; left: 0; top: 0;
    width: 28px; height: 28px; border-radius: 50%;
    background: var(--rs-surface-2); border: 1px solid var(--rs-border);
    color: var(--rs-muted); font-family: var(--rs-mono); font-size: 13px; font-weight: 600;
    display: flex; align-items: center; justify-content: center;
}
.rs-steps > li.done::before {
    background: color-mix(in srgb, var(--rs-green) 16%, transparent);
    border-color: color-mix(in srgb, var(--rs-green) 40%, transparent);
    color: var(--rs-green); content: '\2713';
}
.rs-step-title { font-size: 14px; font-weight: 600; margin-bottom: 8px; }
.rs-config-block {
    background: var(--rs-surface-2); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius-sm); padding: 13px;
    font-family: var(--rs-mono); font-size: 12px; white-space: pre; overflow-x: auto; margin: 8px 0;
    color: var(--rs-text);
}
.rs-qr { margin: 8px 0; }
.rs-qr img, .rs-qr canvas { border: 1px solid var(--rs-border); border-radius: var(--rs-radius-sm); padding: 8px; background: #fff; }

/* ----- staggered load-in ----- */
@media (prefers-reduced-motion: no-preference) {
    .rs-tiles > .rs-tile, .rs-container > .rs-card, .rs-container > .rs-incident,
    #rs-needs-attention > *, .rs-banner {
        animation: rs-rise .5s cubic-bezier(.2,.8,.2,1) both;
    }
    .rs-tiles > .rs-tile:nth-child(2) { animation-delay: .05s; }
    .rs-tiles > .rs-tile:nth-child(3) { animation-delay: .1s; }
    .rs-tiles > .rs-tile:nth-child(4) { animation-delay: .15s; }
}
@keyframes rs-rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes rs-slide-in { from { transform: translateX(24px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes rs-pop { from { opacity: 0; transform: translateY(-4px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes rs-pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }

/* ----- Print checklist ----- */
#rs-print-checklist { display: none; }
@media print {
    body.rs-page * { visibility: hidden; }
    #rs-print-checklist, #rs-print-checklist * { visibility: visible; }
    #rs-print-checklist { display: block; position: absolute; left: 0; top: 0; width: 100%; color: #000; font-size: 12px; }
    #rs-print-checklist h1 { font-size: 18px; margin: 0 0 4px; }
    #rs-print-checklist h2 { font-size: 14px; margin: 16px 0 6px; }
    #rs-print-checklist table { width: 100%; border-collapse: collapse; }
    #rs-print-checklist th, #rs-print-checklist td { border: 1px solid #999; padding: 4px 8px; text-align: left; font-size: 11px; }
}

/* ----- Login overlay ----- */
body.rs-page #login-overlay {
    background: var(--rs-bg); position: fixed; inset: 0; z-index: 1000;
    display: flex; align-items: center; justify-content: center;
}
body.rs-page .login-box {
    background: var(--rs-surface); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius); padding: 34px 30px; width: 340px; max-width: 90vw;
    box-shadow: var(--rs-shadow-lg); text-align: center;
}
body.rs-page .login-box h2 { color: var(--rs-text); font-family: var(--rs-mono); font-size: 18px; font-weight: 600; margin: 0 0 6px; }
body.rs-page .login-box p { color: var(--rs-muted); font-size: 13px; margin: 0 0 18px; }
body.rs-page .login-box input {
    width: 100%; box-sizing: border-box;
    background: var(--rs-surface-2); border: 1px solid var(--rs-border); color: var(--rs-text);
    border-radius: var(--rs-radius-sm); padding: 10px 12px; font-family: var(--rs-mono); font-size: 14px;
}
body.rs-page .login-box input:focus { outline: none; border-color: var(--rs-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--rs-accent) 22%, transparent); }
body.rs-page .login-box .login-btn {
    width: 100%; margin-top: 14px; background: var(--rs-accent); border: none;
    color: #05231a; font-weight: 600; font-family: inherit; font-size: 14px;
    padding: 11px; border-radius: var(--rs-radius-sm); cursor: pointer; box-shadow: var(--rs-glow);
}
:root:not([data-theme="dark"]) body.rs-page .login-box .login-btn { color: #fff; }
body.rs-page .login-error { color: var(--rs-red); font-size: 13px; margin-top: 12px; display: none; }

/* ----- Range calibration page ----- */
/* Field UI: operated one-handed on a phone in sunlight, so the controls are
   oversized and the numbers are the biggest thing on screen. */
.rs-btn-xl {
    width: 100%; min-height: 52px; font-size: 16px; font-weight: 600;
    margin-top: 4px;
}
.rs-btn-stop {
    background: color-mix(in srgb, var(--rs-red) 12%, transparent);
    border-color: color-mix(in srgb, var(--rs-red) 40%, transparent);
    color: var(--rs-red);
}
.rs-btn-stop:hover { background: color-mix(in srgb, var(--rs-red) 20%, transparent); border-color: var(--rs-red); }
.rs-range-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
    margin: 16px 0;
}
.rs-range-stat {
    background: var(--rs-surface-2); border: 1px solid var(--rs-border);
    border-radius: var(--rs-radius-sm); padding: 10px 12px; text-align: center;
}
.rs-range-stat-value {
    font-family: var(--rs-mono); font-size: 26px; font-weight: 700;
    font-variant-numeric: tabular-nums; margin-top: 4px; line-height: 1.2;
}
.rs-range-stat-unit { font-size: 11px; color: var(--rs-muted); margin-top: 2px; }
.rs-range-chart { width: 100%; overflow-x: auto; }
.rs-range-chart svg { width: 100%; height: auto; display: block; }
.rs-range-legend {
    display: flex; gap: 14px; align-items: center; flex-wrap: wrap;
    margin-top: 8px; font-size: 12px; color: var(--rs-muted);
}
.rs-range-legend .swatch {
    display: inline-block; width: 14px; height: 14px; border-radius: 3px;
    vertical-align: -2px; margin-right: 5px; border: 1px solid var(--rs-border-strong);
}

/* ----- Responsive: bottom tab bar under 768px ----- */
@media (max-width: 768px) {
    /* The nav below becomes position:fixed here, to pin it to the bottom of the
       SCREEN. A backdrop-filter makes its element a containing block for
       fixed-position descendants, so the blur on .rs-header made the nav's
       `bottom: 0` resolve against the 54px header instead of the viewport: the
       tab bar landed inside the header, under the logo, which reads as "the
       logo covers the tabs".

       So the blur cannot sit anywhere in .rs-nav's ancestor chain at this width
       — not on .rs-header, and not on .rs-header-inner either (it is the nav's
       parent; moving it there just moves the trap). `filter`, `transform`,
       `perspective` and `will-change` do the same thing.

       Desktop keeps the frosted header: there .rs-nav is ordinary inline flex,
       not fixed, so nothing is trapped. Here it is a near-opaque bar instead —
       a 54px strip is not where the effect earns its keep. */
    .rs-header {
        backdrop-filter: none; -webkit-backdrop-filter: none;
        background: color-mix(in srgb, var(--rs-surface) 96%, transparent);
    }
    .rs-header-inner { height: 54px; gap: 10px; justify-content: space-between; }
    .rs-nav {
        position: fixed; left: 0; right: 0; bottom: 0; z-index: 800;
        background: var(--rs-surface); border-top: 1px solid var(--rs-border);
        display: flex; gap: 0; padding: 0 4px;
        padding-bottom: env(safe-area-inset-bottom, 0);
        overflow-x: auto;
    }
    .rs-nav a {
        flex: 1; text-align: center; min-height: 44px; line-height: 44px;
        padding: 0 4px; font-size: 13px; border-radius: 0;
        white-space: nowrap; min-width: max-content;
    }
    .rs-nav a.active { background: none; box-shadow: none; color: var(--rs-accent); }
    body.rs-page { padding-bottom: 60px; }
    .rs-container { padding: 18px 16px 40px; }
    .rs-tiles { grid-template-columns: repeat(2, 1fr); }
    .rs-widget-grid { grid-template-columns: 1fr; }
    .rs-drawer { width: 100vw; max-width: 100vw; }
    .rs-table-scroll { overflow-x: auto; }
    .rs-map { height: 260px; }
    .rs-filters .rs-select, .rs-filters .rs-input { min-height: 38px; }
    .rs-range-stats { grid-template-columns: repeat(2, 1fr); }
    #rs-range-map { height: 320px !important; }

    /* ----- Tables marked .rs-table-cards become cards on a phone -----
       A 10-column fleet table on a 390px screen is a sideways-scrolling strip:
       the headers leave the viewport, so the numbers lose their meaning and the
       actions sit off the right edge. Here each row is a self-contained card and
       every value carries its own label (from the cell's data-label), so nothing
       depends on a header you can no longer see, and no horizontal scrolling is
       needed to reach a control. Scoped to this class — the log/tag tables are
       genuinely tabular and still scroll. */
    .rs-table-cards { border-collapse: separate; border-spacing: 0; }
    .rs-table-cards thead { display: none; }
    .rs-table-cards tbody, .rs-table-cards tr, .rs-table-cards td { display: block; width: auto; }
    .rs-table-cards tr {
        border: 1px solid var(--rs-border); border-radius: var(--rs-radius);
        background: var(--rs-surface-2); margin: 12px; padding: 4px 2px;
    }
    .rs-table-cards td {
        display: flex; align-items: center; justify-content: space-between;
        gap: 14px; padding: 9px 12px; border-bottom: none; text-align: right;
    }
    .rs-table-cards td::before {
        content: attr(data-label);
        font-family: var(--rs-mono); font-size: 10px; font-weight: 600;
        letter-spacing: .07em; text-transform: uppercase; color: var(--rs-muted);
        text-align: left; flex: 0 0 auto;
    }
    /* Station name is the card's heading, not a labelled field */
    .rs-table-cards td.rs-cell-title {
        justify-content: flex-start; text-align: left;
        font-size: 15px; font-weight: 600;
        border-bottom: 1px solid var(--rs-border); margin-bottom: 2px;
    }
    .rs-table-cards td.rs-cell-title::before { content: none; }
    /* Actions get the full width of the card, wrapping, left-aligned */
    .rs-table-cards td.rs-cell-actions { display: block; text-align: left; }
    .rs-table-cards td.rs-cell-actions::before { display: block; margin-bottom: 7px; }
    .rs-table-cards .rs-row-actions { justify-content: flex-start; }
    .rs-table-cards .rs-row-actions .rs-btn { flex: 1 1 auto; min-height: 40px; }
    .rs-table-cards .rs-seg-btn { min-height: 34px; padding: 7px 15px; }
    .rs-table-cards .rs-empty { display: block; text-align: center; }
    .rs-table-cards .rs-empty::before { content: none; }
}
@media (min-width: 769px) {
    .rs-table-scroll { overflow-x: auto; }
}

/* ============================================================
   Legacy dashboard styles (dark theme) — unchanged below
   ============================================================ */

        :root {
            --bg-primary: #0a0e14;
            --bg-card: #131820;
            --bg-card-hover: #1a2230;
            --bg-elevated: #0f1319;
            --border: #1e2a3a;
            --border-light: #253244;
            --accent-green: #10b981;
            --accent-green-dim: #10b98133;
            --accent-blue: #3b82f6;
            --accent-blue-dim: #3b82f633;
            --accent-amber: #f59e0b;
            --accent-amber-dim: #f59e0b33;
            --accent-red: #ef4444;
            --accent-red-dim: #ef444433;
            --accent-purple: #8b5cf6;
            --accent-purple-dim: #8b5cf633;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-dim: #64748b;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow: 0 4px 24px rgba(0,0,0,0.3);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

        .container { max-width: 1440px; margin: 0 auto; padding: 0 24px 24px; }

        /* ===== HEADER ===== */
        .site-header {
            background: linear-gradient(180deg, #0d1320 0%, var(--bg-primary) 100%);
            border-bottom: 1px solid var(--border);
            padding: 20px 24px;
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(12px);
        }
        .header-inner {
            max-width: 1440px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .brand { display: flex; align-items: center; gap: 14px; }
        .brand-icon {
            width: 40px; height: 40px;
            background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
            border-radius: 10px;
            display: flex; align-items: center; justify-content: center;
        }
        .brand-icon svg { width: 24px; height: 24px; fill: white; }
        .brand-text h1 { font-size: 20px; font-weight: 700; letter-spacing: -0.3px; }
        .brand-text p { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
        .header-right { display: flex; align-items: center; gap: 20px; }
        .live-badge {
            display: flex; align-items: center; gap: 8px;
            background: var(--accent-green-dim);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px; font-weight: 600;
            color: var(--accent-green);
        }
        .live-dot {
            width: 8px; height: 8px;
            background: var(--accent-green);
            border-radius: 50%;
            animation: pulse 2s ease-in-out infinite;
        }
        .header-time { font-size: 13px; color: var(--text-dim); font-variant-numeric: tabular-nums; }
        .last-update { font-size: 11px; color: var(--text-dim); }

        /* ===== TABS ===== */
        .tabs-container {
            max-width: 1440px; margin: 0 auto;
            padding: 0 24px;
            border-bottom: 1px solid var(--border);
            background: var(--bg-primary);
            position: sticky; top: 81px; z-index: 99;
        }
        .tabs { display: flex; gap: 0; overflow-x: auto; }
        .tab {
            padding: 14px 24px;
            background: transparent; border: none;
            color: var(--text-dim);
            cursor: pointer;
            font-family: inherit; font-size: 13px; font-weight: 600;
            text-transform: uppercase; letter-spacing: 0.5px;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .tab:hover { color: var(--text-secondary); }
        .tab.active { color: var(--accent-blue); border-bottom-color: var(--accent-blue); }
        .tab-content { display: none; animation: fadeIn 0.3s ease; }
        .tab-content.active { display: block; }

        /* ===== CARDS ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .card:hover { border-color: var(--border-light); }
        .card-accent {
            border-top: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--accent-green), var(--accent-blue)) 1;
            border-image-slice: 1;
        }
        .card-title {
            font-size: 11px; color: var(--text-dim);
            text-transform: uppercase; letter-spacing: 1px;
            margin-bottom: 16px; font-weight: 600;
        }

        /* ===== STAT CARDS ===== */
        .stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            position: relative; overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute; top: 0; left: 0; right: 0; height: 3px;
        }
        .stat-card.green::before { background: linear-gradient(90deg, var(--accent-green), #34d399); }
        .stat-card.blue::before { background: linear-gradient(90deg, var(--accent-blue), #60a5fa); }
        .stat-card.amber::before { background: linear-gradient(90deg, var(--accent-amber), #fbbf24); }
        .stat-card.purple::before { background: linear-gradient(90deg, var(--accent-purple), #a78bfa); }
        .stat-icon {
            width: 36px; height: 36px; border-radius: 8px;
            display: flex; align-items: center; justify-content: center;
            margin-bottom: 12px;
        }
        .stat-icon.green { background: var(--accent-green-dim); color: var(--accent-green); }
        .stat-icon.blue { background: var(--accent-blue-dim); color: var(--accent-blue); }
        .stat-icon.amber { background: var(--accent-amber-dim); color: var(--accent-amber); }
        .stat-icon.purple { background: var(--accent-purple-dim); color: var(--accent-purple); }
        .stat-icon svg { width: 20px; height: 20px; }
        .stat-label { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
        .stat-value { font-size: 32px; font-weight: 700; line-height: 1; }

        /* ===== GRID ===== */
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; margin-bottom: 24px; }
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

        /* ===== SECTION TITLE ===== */
        .section-title {
            font-size: 16px; font-weight: 600; margin-bottom: 16px;
            display: flex; align-items: center; gap: 8px;
        }
        .section-title .count {
            background: var(--accent-blue-dim); color: var(--accent-blue);
            padding: 2px 10px; border-radius: 10px; font-size: 12px;
        }

        /* ===== STATION CARDS ===== */
        .station-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 20px;
            transition: all 0.2s;
        }
        .station-card:hover { border-color: var(--border-light); box-shadow: var(--shadow); }
        .station-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
        .station-name { font-size: 16px; font-weight: 600; }
        .station-location { font-size: 13px; color: var(--text-dim); margin-bottom: 16px; }
        .station-metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
        .station-metric {
            background: var(--bg-elevated); padding: 10px 12px;
            border-radius: var(--radius-sm);
        }
        .station-metric-label { font-size: 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }
        .station-metric-value { font-size: 18px; font-weight: 600; margin-top: 2px; }
        .station-actions { margin-top: 14px; display: flex; gap: 8px; }

        /* ===== STATUS ===== */
        .status-dot {
            width: 10px; height: 10px; border-radius: 50%; display: inline-block;
        }
        .status-dot.online { background: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); animation: pulse 2s ease-in-out infinite; }
        .status-dot.offline { background: var(--accent-red); }
        .status-dot.never_seen { background: var(--text-dim); }
        .status-badge {
            padding: 4px 12px; border-radius: 20px; font-size: 11px; font-weight: 600; text-transform: uppercase;
        }
        .status-badge.online { background: var(--accent-green-dim); color: var(--accent-green); }
        .status-badge.offline { background: var(--accent-red-dim); color: var(--accent-red); }
        .status-badge.never_seen { background: #64748b33; color: var(--text-dim); }

        /* ===== HEALTH BARS ===== */
        .health-bar { display: flex; align-items: center; gap: 10px; margin: 6px 0; }
        .health-label { width: 50px; font-size: 11px; color: var(--text-dim); }
        .health-track { flex: 1; height: 4px; background: #1e293b; border-radius: 2px; overflow: hidden; }
        .health-fill { height: 100%; border-radius: 2px; transition: width 0.5s ease; }
        .health-fill.green { background: var(--accent-green); }
        .health-fill.amber { background: var(--accent-amber); }
        .health-fill.red { background: var(--accent-red); }
        .health-value { width: 40px; text-align: right; font-size: 11px; font-weight: 500; font-variant-numeric: tabular-nums; }

        /* ===== TABLES ===== */
        table { width: 100%; border-collapse: collapse; }
        th {
            padding: 10px 14px; text-align: left;
            font-size: 10px; text-transform: uppercase; letter-spacing: 0.8px;
            color: var(--text-dim); font-weight: 600;
            border-bottom: 1px solid var(--border);
            position: sticky; top: 0; background: var(--bg-card);
        }
        td { padding: 12px 14px; font-size: 13px; border-bottom: 1px solid #1a2030; }
        tbody tr { transition: background 0.15s; }
        tbody tr:hover { background: var(--bg-card-hover); }
        .freq { font-weight: 600; color: var(--accent-green); font-variant-numeric: tabular-nums; }
        .locked { color: var(--accent-amber); font-weight: 600; }

        /* Signal bar */
        .signal-bar-container { display: flex; align-items: center; gap: 8px; }
        .signal-bar { width: 60px; height: 6px; background: #1e293b; border-radius: 3px; overflow: hidden; }
        .signal-bar-fill { height: 100%; border-radius: 3px; }

        /* ===== BUTTONS ===== */
        .btn {
            padding: 8px 16px; border: none; border-radius: var(--radius-sm);
            cursor: pointer; font-size: 12px; font-weight: 600;
            font-family: inherit; transition: all 0.15s;
            display: inline-flex; align-items: center; gap: 6px;
        }
        .btn-primary { background: var(--accent-blue); color: white; }
        .btn-primary:hover { background: #2563eb; box-shadow: 0 4px 12px rgba(59,130,246,0.3); }
        .btn-success { background: var(--accent-green); color: white; }
        .btn-success:hover { background: #059669; }
        .btn-danger { background: var(--accent-red); color: white; }
        .btn-danger:hover { background: #dc2626; }
        .btn-secondary { background: #1e293b; color: var(--text-secondary); }
        .btn-secondary:hover { background: #334155; }
        .btn-sm { padding: 4px 10px; font-size: 11px; }
        .btn:disabled { opacity: 0.4; cursor: not-allowed; }

        /* ===== FORMS ===== */
        .form-group { margin-bottom: 16px; }
        .form-group label {
            display: block; font-size: 11px; color: var(--text-dim);
            text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; font-weight: 600;
        }
        .form-group input, .form-group select, .form-group textarea {
            width: 100%; padding: 10px 14px;
            background: var(--bg-elevated); border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text-primary); font-family: inherit; font-size: 13px;
        }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            outline: none; border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px var(--accent-blue-dim);
        }
        .form-group input::placeholder { color: var(--text-dim); }
        .form-group small { display: block; margin-top: 4px; color: var(--text-dim); font-size: 11px; }

        .filter-control {
            padding: 8px 12px; background: var(--bg-elevated);
            border: 1px solid var(--border); border-radius: var(--radius-sm);
            color: var(--text-primary); font-family: inherit; font-size: 12px;
        }
        .filter-control:focus { outline: none; border-color: var(--accent-blue); }

        /* ===== MAP ===== */
        .map-container { height: 400px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
        .map-container .leaflet-container { height: 100%; background: #0d1117; }
        .station-popup { color: #1e293b; }
        .station-popup h4 { margin: 0 0 6px; font-size: 14px; }
        .station-popup p { margin: 3px 0; font-size: 12px; }

        /* ===== LEADERBOARD ===== */
        .leaderboard { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
        .leader-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 20px; text-align: center;
            position: relative; transition: all 0.3s;
        }
        .leader-card.rank-1 { border-color: #fbbf24; box-shadow: 0 0 20px rgba(251,191,36,0.1); }
        .leader-card.rank-1::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
            background: linear-gradient(90deg, #f59e0b, #fbbf24);
        }
        .leader-rank {
            font-size: 12px; font-weight: 700; color: var(--text-dim);
            margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px;
        }
        .leader-rank.first { color: #fbbf24; }
        .leader-name { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
        .leader-status { margin-bottom: 16px; }
        .leader-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; text-align: left; }
        .leader-stat {
            background: var(--bg-elevated); padding: 10px;
            border-radius: var(--radius-sm);
        }
        .leader-stat-label { font-size: 10px; color: var(--text-dim); text-transform: uppercase; }
        .leader-stat-value { font-size: 16px; font-weight: 600; margin-top: 2px; }

        /* ===== ACTIVITY FEED ===== */
        .activity-feed {
            max-height: 400px; overflow-y: auto;
            border: 1px solid var(--border); border-radius: var(--radius);
            background: var(--bg-card);
        }
        .activity-item {
            display: flex; align-items: center; gap: 12px;
            padding: 10px 16px;
            border-bottom: 1px solid #1a2030;
            font-size: 13px;
            animation: slideIn 0.3s ease;
        }
        .activity-item:last-child { border-bottom: none; }
        .activity-time { font-size: 11px; color: var(--text-dim); min-width: 70px; font-variant-numeric: tabular-nums; }
        .activity-group {
            padding: 2px 10px; border-radius: 4px; font-size: 11px; font-weight: 600;
            min-width: 70px; text-align: center;
        }
        .group-1 { background: #3b82f633; color: #60a5fa; }
        .group-2 { background: #10b98133; color: #34d399; }
        .group-3 { background: #f59e0b33; color: #fbbf24; }
        .group-4 { background: #8b5cf633; color: #a78bfa; }
        .activity-freq { font-weight: 600; color: var(--accent-green); }
        .activity-signal { font-variant-numeric: tabular-nums; }

        /* ===== ACCORDION ===== */
        .accordion-item { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
        .accordion-header {
            padding: 16px 20px; background: var(--bg-card); cursor: pointer;
            display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 14px;
            transition: background 0.2s;
        }
        .accordion-header:hover { background: var(--bg-card-hover); }
        .accordion-arrow { transition: transform 0.3s; color: var(--text-dim); }
        .accordion-item.open .accordion-arrow { transform: rotate(180deg); }
        .accordion-body { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; }
        .accordion-item.open .accordion-body { max-height: 3000px; padding: 20px; }

        /* ===== TOOLS SUB-TABS ===== */
        .tool-subtab {
            padding: 10px 20px; background: transparent; border: none;
            color: var(--text-dim); cursor: pointer; font-family: inherit;
            font-size: 13px; font-weight: 600; border-bottom: 2px solid transparent;
            transition: all 0.2s; white-space: nowrap;
        }
        .tool-subtab:hover { color: var(--text-secondary); }
        .tool-subtab.active { color: var(--accent-green); border-bottom-color: var(--accent-green); }
        .tools-pane { display: none; animation: fadeIn 0.3s ease; }
        .tools-pane.active { display: block; }

        /* ===== MESSAGES ===== */
        .success-msg { background: var(--accent-green-dim); color: var(--accent-green); padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; display: none; font-weight: 500; font-size: 13px; }
        .error-msg { background: var(--accent-red-dim); color: var(--accent-red); padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; display: none; font-weight: 500; font-size: 13px; }
        .config-output {
            background: var(--bg-elevated); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 16px; margin-top: 16px; display: none;
        }
        .config-output pre { margin: 0; white-space: pre-wrap; font-size: 12px; font-family: 'SF Mono', 'Monaco', monospace; color: var(--text-primary); }

        .empty { text-align: center; padding: 48px; color: var(--text-dim); }
        .empty p { margin-bottom: 8px; }

        /* ===== DISTANCE / VISUALIZATION ===== */
        .distance-display { background: var(--bg-elevated); padding: 24px; border-radius: var(--radius); text-align: center; }
        .distance-value { font-size: 48px; font-weight: 700; color: var(--accent-green); margin: 8px 0; }
        .distance-range { font-size: 14px; color: var(--text-dim); }

        .signal-guide { display: flex; flex-direction: column; gap: 8px; }
        .signal-item { display: flex; align-items: center; gap: 12px; font-size: 13px; }
        .signal-color { width: 32px; height: 16px; border-radius: 4px; }

        .path-loss-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); font-size: 13px; }
        .path-loss-table td:first-child { color: var(--text-dim); }
        .path-loss-table td:last-child { font-weight: 500; color: var(--accent-blue); }

        /* ===== COORDS / MAP REG ===== */
        .coords-display { display: flex; gap: 12px; margin-bottom: 16px; }
        .coord-input { flex: 1; }
        .coord-input input { width: 100%; padding: 10px 12px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-primary); font-family: inherit; font-size: 13px; }
        .coord-input input:focus { outline: none; border-color: var(--accent-blue); }
        .coord-label { font-size: 10px; color: var(--text-dim); text-transform: uppercase; margin-bottom: 6px; letter-spacing: 0.5px; }

        /* ===== CHECKBOX ===== */
        .checkbox-label {
            display: flex; align-items: center; gap: 8px;
            color: var(--text-dim); font-size: 13px; cursor: pointer;
        }
        .checkbox-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent-blue); }

        /* ===== ANIMATIONS ===== */
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(8px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @keyframes slideIn {
            from { opacity: 0; transform: translateX(-10px); }
            to { opacity: 1; transform: translateX(0); }
        }
        @keyframes countUp {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in { animation: fadeIn 0.4s ease forwards; }
        .animate-in-delay-1 { animation-delay: 0.1s; opacity: 0; }
        .animate-in-delay-2 { animation-delay: 0.2s; opacity: 0; }
        .animate-in-delay-3 { animation-delay: 0.3s; opacity: 0; }

        /* ===== FOOTER ===== */
        footer { text-align: center; padding: 32px; color: var(--text-dim); font-size: 12px; border-top: 1px solid var(--border); margin-top: 40px; }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .leaderboard { grid-template-columns: repeat(2, 1fr); }
            .grid-2 { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .stats-row { grid-template-columns: 1fr; }
            .leaderboard { grid-template-columns: 1fr; }
            .grid { grid-template-columns: 1fr; }
            .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
            .tab { padding: 12px 16px; font-size: 12px; }
            .header-inner { flex-direction: column; gap: 12px; align-items: flex-start; }
            .station-metrics { grid-template-columns: repeat(4, 1fr); }
        }

        /* ===== SOLO RANGE TEST ===== */
        .solo-panel {
            background: var(--bg-card); border: 2px solid var(--accent-green);
            border-radius: var(--radius-lg); padding: 20px; margin-bottom: 24px;
        }
        .solo-panel .solo-header {
            display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px;
        }
        .solo-header h3 { font-size: 18px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
        .solo-setup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
        .solo-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
        .solo-stat {
            background: var(--bg-elevated); padding: 16px;
            border-radius: var(--radius); text-align: center;
        }
        .solo-stat-label {
            font-size: 10px; color: var(--text-dim); text-transform: uppercase;
            letter-spacing: 0.5px; margin-bottom: 6px;
        }
        .solo-stat-value { font-size: 36px; font-weight: 700; line-height: 1.1; }
        .solo-stat-unit { font-size: 12px; color: var(--text-dim); margin-top: 2px; }
        .solo-btn-large {
            width: 100%; padding: 18px; font-size: 18px; font-weight: 700;
            border: none; border-radius: var(--radius); cursor: pointer;
            font-family: inherit; transition: all 0.15s;
            display: flex; align-items: center; justify-content: center; gap: 10px;
        }
        .solo-btn-start { background: var(--accent-green); color: #fff; }
        .solo-btn-start:hover { background: #059669; box-shadow: 0 4px 16px rgba(16,185,129,0.4); }
        .solo-btn-waypoint { background: var(--accent-blue); color: #fff; margin-bottom: 10px; }
        .solo-btn-waypoint:hover { background: #2563eb; }
        .solo-btn-stop { background: var(--accent-red); color: #fff; }
        .solo-btn-stop:hover { background: #dc2626; }
        .gps-status {
            display: flex; align-items: center; gap: 8px;
            padding: 10px 16px; border-radius: var(--radius-sm);
            font-size: 13px; font-weight: 500; margin-bottom: 12px;
        }
        .gps-status.searching { background: rgba(245,158,11,0.15); color: var(--accent-amber); }
        .gps-status.locked { background: rgba(16,185,129,0.15); color: var(--accent-green); }
        .gps-status.error { background: rgba(239,68,68,0.15); color: var(--accent-red); }
        .gps-status.manual { background: rgba(59,130,246,0.15); color: var(--accent-blue); }
        .range-chart-container {
            background: var(--bg-elevated); border-radius: var(--radius);
            padding: 16px; margin-top: 16px; border: 1px solid var(--border);
        }
        .range-chart-container svg { width: 100%; height: 200px; }
        @media (max-width: 768px) {
            .solo-setup-grid { grid-template-columns: 1fr; }
            .solo-stat-value { font-size: 42px; }
            .solo-btn-large { padding: 22px; font-size: 20px; }
            .solo-panel { padding: 16px; }
        }

        /* Login overlay */
        #login-overlay {
            position: fixed; top: 0; left: 0; right: 0; bottom: 0;
            background: var(--bg-primary); z-index: 10000;
            display: flex; align-items: center; justify-content: center;
        }
        .login-box {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: var(--radius); padding: 40px; width: 360px;
            text-align: center;
        }
        .login-box h2 { margin: 0 0 8px; color: var(--text-primary); font-size: 22px; }
        .login-box p { color: var(--text-dim); margin: 0 0 24px; font-size: 13px; }
        .login-box input {
            width: 100%; padding: 12px; border-radius: var(--radius-sm);
            border: 1px solid var(--border); background: var(--bg-elevated);
            color: var(--text-primary); font-size: 14px; margin-bottom: 16px;
            box-sizing: border-box;
        }
        .login-box input:focus { border-color: var(--accent-green); outline: none; }
        .login-box .login-btn {
            width: 100%; padding: 12px; border: none; border-radius: var(--radius-sm);
            background: var(--accent-green); color: #fff; font-size: 14px;
            font-weight: 600; cursor: pointer;
        }
        .login-box .login-btn:hover { opacity: 0.9; }
        .login-error { color: var(--accent-red); font-size: 13px; margin-top: 12px; display: none; }