/* ───────────────────────────────────────────────────────────────
   Geohash Playground — design system
   ─────────────────────────────────────────────────────────────── */

:root {
    --bg: #0b0e14;
    --panel: rgba(13, 17, 27, 0.78);
    --panel-solid: #11151f;
    --border: rgba(255, 255, 255, 0.09);
    --border-soft: rgba(255, 255, 255, 0.055);
    --text: #e7ecf3;
    --text-dim: #8b94a7;
    --text-faint: #5b6374;
    --accent: #22d3ee;
    --accent2: #a78bfa;
    --accent3: #f472b6;
    --good: #34d399;
    --bad: #fb7185;
    --grad: linear-gradient(92deg, var(--accent), var(--accent2));
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow: 0 12px 40px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.35);
    --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    overflow: hidden;
}

#app { height: 100%; }

/* ── Boot loader ─────────────────────────────────────────────── */

.boot {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background:
        radial-gradient(1100px 500px at 50% -10%, rgba(34, 211, 238, 0.07), transparent 60%),
        radial-gradient(900px 500px at 80% 110%, rgba(167, 139, 250, 0.07), transparent 60%),
        var(--bg);
}

.boot-mark { display: flex; gap: 6px; }

.boot-mark span {
    width: 44px; height: 52px;
    display: grid; place-items: center;
    font-family: var(--mono);
    font-size: 22px; font-weight: 700;
    color: var(--accent);
    background: rgba(34, 211, 238, 0.06);
    border: 1px solid rgba(34, 211, 238, 0.25);
    border-radius: 10px;
    animation: bootPulse 1.5s ease-in-out infinite;
}

.boot-mark span:nth-child(2) { animation-delay: .1s; color: #4fd8ec; }
.boot-mark span:nth-child(3) { animation-delay: .2s; color: #71d4f0; }
.boot-mark span:nth-child(4) { animation-delay: .3s; color: #8cccf2; }
.boot-mark span:nth-child(5) { animation-delay: .4s; color: #9fc2f4; }
.boot-mark span:nth-child(6) { animation-delay: .5s; color: #a9b3f6; }
.boot-mark span:nth-child(7) { animation-delay: .6s; color: var(--accent2); }

@keyframes bootPulse {
    0%, 100% { transform: translateY(0); opacity: .55; }
    50%      { transform: translateY(-7px); opacity: 1; }
}

.boot-title { font-size: 19px; font-weight: 700; letter-spacing: .2px; }
.boot-sub   { font-size: 13px; color: var(--text-dim); }

.boot-bar {
    width: 240px; height: 4px; margin-top: 6px;
    border-radius: 99px;
    background: rgba(255, 255, 255, 0.07);
    overflow: hidden;
}

.boot-bar-fill {
    height: 100%;
    width: var(--blazor-load-percentage, 3%);
    background: var(--grad);
    border-radius: 99px;
    transition: width .25s ease;
}

/* ── App shell ───────────────────────────────────────────────── */

.shell { position: relative; height: 100vh; width: 100vw; }

#map {
    position: absolute; inset: 0;
    background: #0a0d12;
    outline: none;
}

.panel {
    position: absolute;
    z-index: 800;
    background: var(--panel);
    -webkit-backdrop-filter: blur(18px) saturate(1.3);
    backdrop-filter: blur(18px) saturate(1.3);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

/* ── Top bar ─────────────────────────────────────────────────── */

.topbar {
    top: 14px; left: 14px; right: 14px;
    display: flex; align-items: center; gap: 14px;
    padding: 10px 14px;
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand img { width: 26px; height: 26px; border-radius: 6px; }

.brand-name {
    font-weight: 800; font-size: 15px; letter-spacing: .2px;
    white-space: nowrap;
}

.brand-name em {
    font-style: normal;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.brand-sub {
    font-size: 11px; color: var(--text-faint);
    white-space: nowrap; margin-top: 1px;
}

.modes {
    display: flex; gap: 4px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-soft);
    padding: 4px;
    border-radius: 12px;
    margin-left: 6px;
}

.mode-btn {
    appearance: none; border: 0; cursor: pointer;
    background: transparent;
    color: var(--text-dim);
    font: 600 13px var(--sans);
    padding: 7px 14px;
    border-radius: 9px;
    transition: color .15s, background .15s, transform .1s;
    display: flex; align-items: center; gap: 7px;
}

.mode-btn:hover { color: var(--text); }
.mode-btn:active { transform: scale(.97); }

.mode-btn.active {
    color: #07121a;
    background: var(--grad);
    box-shadow: 0 2px 12px rgba(34, 211, 238, 0.35);
}

.topbar-spacer { flex: 1; }

.wasm-chip {
    display: flex; align-items: center; gap: 7px;
    font-size: 11.5px; font-weight: 600; color: var(--text-dim);
    padding: 6px 11px;
    border: 1px solid var(--border-soft);
    border-radius: 99px;
    background: rgba(255, 255, 255, 0.04);
    white-space: nowrap;
}

.wasm-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--good);
    box-shadow: 0 0 8px var(--good);
    animation: blink 2.4s ease-in-out infinite;
}

@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

.gh-link {
    display: flex; align-items: center; gap: 7px;
    color: var(--text-dim); text-decoration: none;
    font-size: 13px; font-weight: 600;
    padding: 7px 12px;
    border-radius: 10px;
    border: 1px solid var(--border-soft);
    background: rgba(255, 255, 255, 0.04);
    transition: color .15s, border-color .15s;
    white-space: nowrap;
}

.gh-link:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.2); }
.gh-link svg { width: 15px; height: 15px; fill: currentColor; }

/* ── Left control panel ──────────────────────────────────────── */

.controls {
    top: 84px; left: 14px;
    width: 308px;
    max-height: calc(100vh - 108px);
    display: flex; flex-direction: column;
    overflow: hidden;
}

.controls-scroll {
    overflow-y: auto;
    padding: 16px 16px 14px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,.15) transparent;
}

.ctl-section { margin-bottom: 16px; }
.ctl-section:last-child { margin-bottom: 2px; }

.ctl-label {
    display: flex; justify-content: space-between; align-items: baseline;
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: .9px;
    color: var(--text-faint);
    margin-bottom: 8px;
}

.ctl-value {
    font-family: var(--mono); font-size: 12px;
    color: var(--accent); text-transform: none; letter-spacing: 0;
}

.hint {
    font-size: 12px; line-height: 1.55; color: var(--text-dim);
    margin: 2px 0 0;
}

.hint b { color: var(--text); font-weight: 600; }

/* sliders */

input[type="range"] {
    -webkit-appearance: none;
    width: 100%; height: 26px;
    background: transparent;
    cursor: pointer;
    margin: 0;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 5px; border-radius: 99px;
    background: linear-gradient(to right,
        var(--accent) var(--fill, 50%),
        rgba(255, 255, 255, 0.12) var(--fill, 50%));
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px; height: 16px;
    border-radius: 50%;
    margin-top: -5.5px;
    background: #fff;
    border: 2.5px solid var(--accent);
    box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
    transition: transform .12s;
}

input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.15); }

input[type="range"]::-moz-range-track {
    height: 5px; border-radius: 99px;
    background: rgba(255, 255, 255, 0.12);
}

input[type="range"]::-moz-range-progress {
    height: 5px; border-radius: 99px; background: var(--accent);
}

input[type="range"]::-moz-range-thumb {
    width: 13px; height: 13px; border-radius: 50%;
    background: #fff; border: 2.5px solid var(--accent);
    box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.18);
}

/* segmented + toggles + chips */

.seg {
    display: flex; gap: 4px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-soft);
    border-radius: 10px; padding: 3px;
}

.seg button {
    flex: 1;
    appearance: none; border: 0; cursor: pointer;
    background: transparent; color: var(--text-dim);
    font: 600 12px var(--sans);
    padding: 6.5px 4px; border-radius: 7px;
    transition: all .15s;
}

.seg button.active { background: rgba(34, 211, 238, 0.16); color: var(--accent); }
.seg button:hover:not(.active) { color: var(--text); }

.switch-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: 7px 0; gap: 10px;
    font-size: 13px; font-weight: 600; color: var(--text);
}

.switch-row small {
    display: block;
    font-size: 10.5px;
    color: #4a5263; /* quieter than --text-faint: API names are detail, not label */
    font-weight: 400;
    margin-top: 1px;
}

.switch {
    position: relative; width: 38px; height: 22px; flex-shrink: 0;
    border-radius: 99px; cursor: pointer;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid var(--border-soft);
    transition: background .18s;
}

.switch::after {
    content: ""; position: absolute; top: 2px; left: 2px;
    width: 16px; height: 16px; border-radius: 50%;
    background: #cfd6e2;
    transition: transform .18s ease, background .18s;
}

.switch.on { background: rgba(34, 211, 238, 0.45); }
.switch.on::after { transform: translateX(16px); background: #fff; }

.chips { display: flex; flex-wrap: wrap; gap: 7px; }

.chip {
    appearance: none; cursor: pointer;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font: 500 12.5px var(--sans);
    padding: 7px 12px;
    border-radius: 99px;
    transition: all .15s;
}

.chip:hover {
    border-color: rgba(34, 211, 238, 0.5);
    background: rgba(34, 211, 238, 0.1);
    transform: translateY(-1px);
}

.btn {
    appearance: none; cursor: pointer;
    width: 100%;
    border: 0; border-radius: var(--radius-md);
    background: var(--grad);
    color: #07121a;
    font: 700 13.5px var(--sans);
    padding: 11px 14px;
    transition: filter .15s, transform .1s;
    box-shadow: 0 4px 18px rgba(34, 211, 238, 0.25);
}

.btn:hover { filter: brightness(1.08); }
.btn:active { transform: scale(.985); }

.btn.ghost {
    background: rgba(255, 255, 255, 0.07);
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: none;
}

.btn.ghost:hover { border-color: rgba(255, 255, 255, 0.25); }

.btn[disabled] { opacity: .45; pointer-events: none; }

.btn-row { display: flex; gap: 8px; }

/* ── Hash readout ────────────────────────────────────────────── */

.hash-panel {
    left: 50%; bottom: 18px;
    transform: translateX(-50%);
    padding: 14px 18px 12px;
    text-align: center;
    max-width: min(94vw, 720px);
}

.hash-tiles { display: inline-flex; gap: 5px; }

.hash-tiles .tile {
    min-width: 40px; height: 50px;
    padding: 0 6px;
    display: grid; place-items: center;
    font-family: var(--mono);
    font-size: 24px; font-weight: 700;
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all .14s ease;
    animation: tileIn .3s cubic-bezier(.2, .9, .3, 1.4) backwards;
}

.hash-tiles .tile:nth-child(1)  { animation-delay: 0ms; }
.hash-tiles .tile:nth-child(2)  { animation-delay: 25ms; }
.hash-tiles .tile:nth-child(3)  { animation-delay: 50ms; }
.hash-tiles .tile:nth-child(4)  { animation-delay: 75ms; }
.hash-tiles .tile:nth-child(5)  { animation-delay: 100ms; }
.hash-tiles .tile:nth-child(6)  { animation-delay: 125ms; }
.hash-tiles .tile:nth-child(7)  { animation-delay: 150ms; }
.hash-tiles .tile:nth-child(8)  { animation-delay: 175ms; }
.hash-tiles .tile:nth-child(9)  { animation-delay: 200ms; }
.hash-tiles .tile:nth-child(10) { animation-delay: 225ms; }
.hash-tiles .tile:nth-child(11) { animation-delay: 250ms; }
.hash-tiles .tile:nth-child(12) { animation-delay: 275ms; }

@keyframes tileIn {
    from { opacity: 0; transform: translateY(14px) scale(.8); }
    to   { opacity: 1; transform: none; }
}

.hash-tiles .tile:hover,
.hash-tiles .tile.lit {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(34, 211, 238, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(34, 211, 238, 0.22);
}

.hash-meta {
    margin-top: 9px;
    font-size: 12px; color: var(--text-dim);
    display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}

.hash-meta b { color: var(--text); font-weight: 600; }
.hash-meta .mono { font-family: var(--mono); font-size: 11.5px; }

.hash-hint { font-size: 11px; color: var(--text-faint); margin-top: 7px; }

/* ── Right panel: stats + code ───────────────────────────────── */

.codepanel {
    top: 84px; right: 14px;
    width: 392px;
    min-height: 290px; /* stable frame — content changes, the panel doesn't jump */
    max-height: calc(100vh - 108px);
    display: flex; flex-direction: column;
    overflow: hidden;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
    flex-shrink: 0;
}

.stat {
    background: rgba(13, 17, 27, 0.6);
    padding: 12px 8px 10px;
    text-align: center;
}

.stat .v {
    font-family: var(--mono);
    font-size: 19px; font-weight: 700;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.15;
}

/* Empty stat slots: visibly placeholders, not broken gradients. */
.stat .v.na {
    background: none;
    color: var(--text-faint);
    font-weight: 500;
}

.stat .k {
    font-size: 10px; font-weight: 700;
    letter-spacing: .8px; text-transform: uppercase;
    color: var(--text-faint);
    margin-top: 3px;
}

.code-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 14px 0;
    flex-shrink: 0;
}

.code-title {
    display: flex; align-items: center; gap: 8px;
    font-size: 12px; font-weight: 700;
    letter-spacing: .8px; text-transform: uppercase;
    color: var(--text-faint);
}

.code-title .dotnet {
    font-family: var(--mono);
    background: rgba(167, 139, 250, 0.15);
    color: var(--accent2);
    border: 1px solid rgba(167, 139, 250, 0.3);
    padding: 2px 7px; border-radius: 6px;
    font-size: 10.5px; letter-spacing: 0; text-transform: none;
}

.copy-btn {
    appearance: none; cursor: pointer;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-dim);
    font: 600 11.5px var(--sans);
    padding: 5px 11px; border-radius: 8px;
    transition: all .15s;
}

.copy-btn:hover { color: var(--text); border-color: rgba(255,255,255,.25); }
.copy-btn.ok { color: var(--good); border-color: rgba(52, 211, 153, .4); }

.code-scroll {
    overflow: auto;
    padding: 10px 14px 14px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,.15) transparent;
}

pre.code {
    margin: 0;
    font-family: var(--mono);
    font-size: 12px;
    line-height: 1.65;
    white-space: pre;
    tab-size: 4;
    color: #c8d3e8;
}

.tok-kw  { color: #79b8ff; }            /* keywords        */
.tok-ty  { color: #4ec9b0; }            /* types           */
.tok-st  { color: #e8b88a; }            /* strings         */
.tok-nu  { color: #b5cea8; }            /* numbers         */
.tok-cm  { color: #6b7487; font-style: italic; } /* comments */
.tok-mt  { color: #dcdcaa; }            /* method names    */

/* ── Cursor chip (follows the mouse over the map) ────────────── */

#cursor-chip {
    position: fixed;
    z-index: 1200;
    pointer-events: none;
    transform: translate(14px, 18px);
    font-family: var(--mono);
    font-size: 12px; font-weight: 700;
    letter-spacing: .5px;
    color: #07121a;
    background: var(--grad);
    padding: 4px 9px;
    border-radius: 7px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity .15s;
    white-space: nowrap;
}

#cursor-chip.show { opacity: 1; }

/* ── Map vector + label styling ──────────────────────────────── */

.leaflet-container {
    background: #0a0d12;
    font-family: var(--sans);
}

.leaflet-control-zoom {
    border: 1px solid var(--border) !important;
    border-radius: 10px !important;
    overflow: hidden;
    box-shadow: var(--shadow) !important;
}

.leaflet-control-zoom a {
    background: var(--panel-solid) !important;
    color: var(--text) !important;
    border-bottom: 1px solid var(--border-soft) !important;
    width: 32px !important; height: 32px !important;
    line-height: 32px !important;
}

.leaflet-control-zoom a:hover { background: #1a2030 !important; }

.leaflet-control-attribution {
    background: rgba(11, 14, 20, 0.7) !important;
    color: var(--text-faint) !important;
    font-size: 10px !important;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-radius: 8px 0 0 0;
}

.leaflet-control-attribution a { color: var(--text-dim) !important; }

.geo-label {
    background: none !important;
    border: none !important;
    box-shadow: none !important;
}

.geo-label span {
    display: inline-block;
    transform: translate(-50%, -50%);
    font-family: var(--mono);
    font-size: 11px; font-weight: 600;
    letter-spacing: .4px;
    color: rgba(231, 236, 243, 0.75);
    /* dark halo: stays legible over landmasses and labels in the basemap */
    text-shadow: 0 0 5px rgba(8, 11, 16, 0.95), 0 0 2px rgba(8, 11, 16, 1), 0 1px 3px rgba(0, 0, 0, 0.9);
    white-space: nowrap;
    pointer-events: none;
}

/* Low-zoom grid labels: texture, not content — the continents read first. */
.geo-label span.lo {
    font-size: 9.5px;
    font-weight: 500;
    letter-spacing: .3px;
    color: rgba(231, 236, 243, 0.34);
    text-shadow: 0 0 4px rgba(8, 11, 16, 0.95), 0 1px 2px rgba(0, 0, 0, 0.85);
}

.geo-label span.dir {
    color: rgba(34, 211, 238, 0.9);
    font-size: 10px; font-weight: 700; letter-spacing: 1px;
}

.geo-label span.child {
    color: rgba(231, 236, 243, 0.85);
    font-size: 12px;
}

.geo-label span.child b { color: var(--accent3); font-weight: 700; }

.sel-cell {
    animation: selIn .45s cubic-bezier(.2, .9, .3, 1.3);
    filter: drop-shadow(0 0 7px rgba(34, 211, 238, 0.65));
}

@keyframes selIn {
    from { stroke-opacity: 0; }
    to   { stroke-opacity: 1; }
}

.ghost-cell { transition: none; }

.zcurve {
    stroke-dasharray: 7 7;
    animation: zflow 1.4s linear infinite;
    filter: drop-shadow(0 0 5px rgba(244, 114, 182, 0.5));
}

@keyframes zflow { to { stroke-dashoffset: -14; } }

.pulse-marker {
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 2.5px solid #fff;
    box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.55);
    animation: ping 1.8s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
    transform: translate(-50%, -50%);
    position: relative; top: 50%; left: 50%;
}

@keyframes ping {
    0%   { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.55); }
    100% { box-shadow: 0 0 0 22px rgba(34, 211, 238, 0); }
}

.vertex-marker {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--accent3);
    border: 2px solid #fff;
    transform: translate(-50%, -50%);
    position: relative; top: 50%; left: 50%;
    box-shadow: 0 1px 6px rgba(0,0,0,.6);
}

/* ── Welcome onboarding (scrim + modal, first visit) ─────────── */

.scrim {
    position: absolute;
    inset: 0;
    z-index: 850; /* above the panels (800), below the welcome modal (900) */
    background: rgba(6, 9, 14, 0.55);
    -webkit-backdrop-filter: blur(1.5px);
    backdrop-filter: blur(1.5px);
    cursor: pointer;
    transition: opacity .5s ease;
    animation: scrimIn .6s ease backwards;
}

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

.scrim.bye { opacity: 0; pointer-events: none; }

.welcome {
    position: absolute;
    left: 50%; top: 40%;
    transform: translate(-50%, -50%);
    z-index: 900;
    text-align: center;
    max-width: min(92vw, 560px);
    padding: 22px 30px;
    background: var(--panel);
    -webkit-backdrop-filter: blur(18px) saturate(1.3);
    backdrop-filter: blur(18px) saturate(1.3);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    opacity: 1;
    transition: opacity .45s ease, transform .45s ease;
    animation: welcomeIn .6s cubic-bezier(.2, .9, .3, 1.2) backwards;
    animation-delay: .4s;
}

@keyframes welcomeIn {
    from { opacity: 0; transform: translate(-50%, -44%); }
    to   { opacity: 1; transform: translate(-50%, -50%); }
}

.welcome.bye {
    opacity: 0;
    transform: translate(-50%, -56%);
}

.welcome-title {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: .2px;
    background: linear-gradient(92deg, #e7ecf3, var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.welcome-sub {
    margin-top: 8px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-dim);
}

.welcome-sub b { color: var(--text); font-weight: 600; }
.welcome-sub em { color: var(--accent); font-style: normal; font-weight: 600; }

.welcome .btn {
    width: auto;
    margin-top: 18px;
    padding: 10px 30px;
}

.welcome-actions {
    display: flex; gap: 10px; justify-content: center;
    margin-top: 18px;
}

.welcome-actions .btn { width: auto; margin-top: 0; padding: 10px 24px; }

/* ── Guided tour (subtitle card, the map performs) ───────────── */

.tour {
    left: 50%; bottom: 18px;
    transform: translateX(-50%);
    z-index: 950;
    width: min(94vw, 660px);
    padding: 14px 18px 12px;
}

.tour-head {
    display: flex; align-items: baseline; gap: 10px;
}

.tour-step {
    font-family: var(--mono);
    font-size: 10.5px; font-weight: 700;
    color: var(--accent);
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.3);
    padding: 2px 8px; border-radius: 99px;
    white-space: nowrap;
}

.tour-title { font-size: 15px; font-weight: 800; letter-spacing: .2px; flex: 1; }

.tour-skip {
    appearance: none; border: 0; cursor: pointer;
    background: none; color: var(--text-faint);
    font: 600 11.5px var(--sans);
    padding: 4px 6px;
    transition: color .15s;
}

.tour-skip:hover { color: var(--text); }

.tour-body {
    margin-top: 8px;
    font-size: 13px; line-height: 1.65;
    color: var(--text-dim);
    animation: tourBodyIn .35s ease backwards;
}

@keyframes tourBodyIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: none; }
}

.tour-body b { color: var(--text); font-weight: 600; font-family: var(--mono); font-size: 12.5px; }
.tour-body em { color: var(--accent); font-style: normal; font-weight: 600; }
.tour-body i { color: var(--text); }
.tour-body code {
    font-family: var(--mono); font-size: 11.5px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-soft);
    padding: 1px 6px; border-radius: 5px;
    color: #e8b88a;
}

.tour-install {
    display: flex; align-items: center; gap: 10px;
    margin-top: 10px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-soft);
    border-radius: 9px;
}

.tour-install code {
    flex: 1; background: none; border: 0; padding: 0;
    color: var(--accent); font-size: 12.5px;
}

.tour-nav {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: 12px;
}

.tour-dots { display: flex; gap: 6px; }

.tour-dots span {
    width: 7px; height: 7px; border-radius: 50%;
    background: rgba(255, 255, 255, 0.16);
    cursor: pointer;
    transition: all .2s;
}

.tour-dots span:hover { background: rgba(255, 255, 255, 0.35); }
.tour-dots span.on { background: var(--accent); box-shadow: 0 0 7px rgba(34, 211, 238, 0.6); }

.tour-btns { display: flex; gap: 8px; }
.tour-btns .btn { width: auto; padding: 8px 20px; font-size: 12.5px; }

/* ── Busy shimmer + toast ────────────────────────────────────── */

.busybar {
    position: absolute; top: 0; left: 0; right: 0;
    height: 3px; z-index: 1300;
    overflow: hidden;
    background: rgba(34, 211, 238, 0.12);
}

.busybar::after {
    content: "";
    position: absolute; top: 0; bottom: 0;
    width: 38%;
    background: var(--grad);
    border-radius: 99px;
    animation: busyslide 1s ease-in-out infinite;
}

@keyframes busyslide {
    from { left: -40%; }
    to   { left: 105%; }
}

.toast {
    position: absolute;
    left: 50%; top: 76px;
    transform: translateX(-50%);
    z-index: 1400;
    max-width: min(92vw, 560px);
    background: var(--panel);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(251, 113, 133, 0.4);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    padding: 11px 16px;
    font-size: 12.5px; line-height: 1.5;
    color: var(--text);
    animation: toastIn .25s cubic-bezier(.2, .9, .3, 1.2);
}

.toast.info { border-color: rgba(34, 211, 238, 0.4); }
.toast b { color: var(--bad); font-family: var(--mono); font-size: 11.5px; }
.toast.info b { color: var(--accent); }

@keyframes toastIn {
    from { opacity: 0; transform: translate(-50%, -8px); }
    to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ── Blazor error bar ────────────────────────────────────────── */

#blazor-error-ui {
    display: none;
    position: fixed; bottom: 0; left: 0; right: 0;
    z-index: 2000;
    background: #2b1620;
    color: var(--text);
    border-top: 1px solid var(--bad);
    padding: 10px 16px;
    font-size: 13px;
}

#blazor-error-ui .reload { color: var(--accent); margin-left: 8px; }
#blazor-error-ui .dismiss { float: right; cursor: pointer; }

/* ── Responsive ──────────────────────────────────────────────── */

@media (max-width: 1100px) {
    .codepanel { display: none; }
}

@media (max-width: 760px) {
    .topbar { flex-wrap: wrap; gap: 8px; padding: 8px 10px; }
    .brand-sub, .wasm-chip, .gh-link span { display: none; }

    .controls {
        top: auto; bottom: 12px; left: 10px; right: 10px;
        width: auto;
        max-height: 42vh;
    }

    .hash-panel { display: none; }

    /* While the tour drives, the subtitle card owns the bottom edge. */
    .touring .controls { display: none; }
    .tour { bottom: 10px; padding: 12px 14px 10px; }
}