/* Three colours: navy, Carolina blue, white. Everything else is a mix of them. The marker plaque keeps
   the cast-aluminium look of the real signs; Civil War brick and site gold are map semantics only. */
:root {
    --navy: #13294B;
    --blue: #4B9CD3;
    --white: #FFFFFF;
    --deep: color-mix(in srgb, var(--navy) 82%, #000);
    --raise: color-mix(in srgb, var(--navy) 90%, var(--white));
    --rule: color-mix(in srgb, var(--white) 13%, var(--navy));
    --soft: color-mix(in srgb, var(--white) 66%, var(--navy));
    --faint: color-mix(in srgb, var(--white) 45%, var(--navy));
    --tint: color-mix(in srgb, var(--blue) 20%, var(--navy));
    --brick: #c9583f;
    --gold: #d9a548;
    --display: "Barlow Condensed", "Arial Narrow", system-ui, sans-serif;
    --body: "Public Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
    color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body { background: var(--deep); color: var(--white); font: 400 14px/1.45 var(--body); overflow: hidden; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

#stage { position: fixed; inset: 0; }
#stage canvas { display: block; width: 100%; height: 100%; touch-action: none; }
.labels { position: fixed; inset: 0; pointer-events: none; }
.city { position: absolute; transform: translate(-50%, -50%); font: 600 11px/1 var(--body); letter-spacing: .12em;
    text-transform: uppercase; color: color-mix(in srgb, var(--white) 72%, transparent); white-space: nowrap;
    text-shadow: 0 1px 2px var(--deep), 0 0 10px var(--deep); }
.city.home { color: var(--white); font-size: 12px; }
.city.home::before { content: ""; display: inline-block; width: 7px; height: 7px; margin-right: 6px; border-radius: 50%;
    background: var(--blue); box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 35%, transparent); vertical-align: 1px; }

/* ---------- Panel ---------- */
.panel { position: fixed; left: 16px; top: calc(env(safe-area-inset-top, 0px) + 16px); bottom: 16px; width: 392px; z-index: 3;
    display: flex; flex-direction: column; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin;
    background: color-mix(in srgb, var(--navy) 96%, transparent);
    border: 1px solid var(--rule); border-radius: 2px; box-shadow: 0 24px 60px #0009; backdrop-filter: blur(10px); }
.panel > * { flex: none; }
.grip { display: none; }

.top { padding: 18px 22px 0; }
.brand { display: inline-flex; align-items: center; gap: 7px; color: var(--soft); text-decoration: none; font: 600 13px/1 var(--body); }
.brand svg { width: 15px; height: 15px; fill: var(--blue); }
.brand:hover { color: var(--white); }
h1 { margin: 10px 0 0; font: 700 34px/0.95 var(--display); letter-spacing: .005em; text-transform: uppercase; }

.search { position: relative; margin: 16px 22px 0; }
.search svg { position: absolute; left: 11px; top: 50%; width: 16px; height: 16px; transform: translateY(-50%);
    fill: none; stroke: var(--faint); stroke-width: 2; stroke-linecap: round; pointer-events: none; }
.search input { width: 100%; height: 40px; padding: 0 12px 0 35px; color: var(--white); background: var(--deep);
    border: 1px solid var(--rule); border-radius: 2px; font: 500 14px/1 var(--body); }
.search input::placeholder { color: var(--faint); }
.search input:focus { outline: none; border-color: var(--blue); }
.results { position: absolute; left: 0; right: 0; top: 44px; z-index: 6; max-height: 50vh; overflow-y: auto; background: var(--raise);
    border: 1px solid var(--rule); border-radius: 2px; box-shadow: 0 18px 40px #0009; }
.results button { display: grid; grid-template-columns: 52px 1fr; gap: 8px; width: 100%; padding: 9px 12px; text-align: left;
    cursor: pointer; background: none; border: 0; border-bottom: 1px solid var(--rule); }
.results button:last-child { border-bottom: 0; }
.results button:hover, .results button[aria-selected="true"] { background: var(--tint); }
.results .id { font: 600 11.5px/1.5 var(--body); color: var(--blue); font-variant-numeric: tabular-nums; }
.results b { display: block; font: 600 15px/1.15 var(--display); letter-spacing: .03em; text-transform: uppercase; }
.results small { color: var(--soft); font-size: 12px; }
.results .none { padding: 12px; color: var(--soft); font-size: 13px; }

.trip { padding: 14px 22px 0; }
.picker { display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; padding: 12px 14px;
    text-align: left; cursor: pointer; background: var(--tint); border: 1px solid color-mix(in srgb, var(--blue) 55%, var(--navy));
    border-radius: 2px; }
.picker:hover { border-color: var(--blue); }
.pk-text b { display: block; font: 700 22px/1 var(--display); letter-spacing: .02em; text-transform: uppercase; }
.pk-text span { display: block; margin-top: 4px; color: var(--soft); font-size: 12.5px; }
.pk-change { flex: none; padding: 6px 9px; color: var(--navy); background: var(--blue); border-radius: 2px; font: 600 12px/1 var(--body); }
.picker[aria-expanded="true"] .pk-change { color: var(--white); background: none; box-shadow: inset 0 0 0 1px var(--blue); }
.blurb { margin: 10px 0 0; color: var(--soft); font-size: 13px; line-height: 1.5; }
.blurb b { color: var(--white); font-weight: 600; }

/* The trip menu replaces the planner below the picker while it is open. */
.panel.menuopen .stats, .panel.menuopen .controls, .panel.menuopen .days, .panel.menuopen .blurb { display: none; }
.menu { padding: 6px 22px 18px; }
.menu h2 { margin: 16px 0 8px; font: 600 13px/1.2 var(--body); color: var(--soft); }
.menu .grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.menu .wide { grid-column: 1 / -1; }
.item { display: grid; gap: 3px; padding: 10px 11px 9px; text-align: left; cursor: pointer; background: var(--raise);
    border: 1px solid var(--rule); border-radius: 2px; }
.item:hover { border-color: var(--blue); }
.item[aria-current="true"] { background: var(--tint); border-color: var(--blue); }
.item b { font: 600 17px/1.05 var(--display); letter-spacing: .02em; text-transform: uppercase; }
.item span { color: var(--soft); font-size: 12px; font-variant-numeric: tabular-nums; }
.item.cw b::after { content: ""; display: inline-block; width: 7px; height: 7px; margin-left: 7px; background: var(--brick); vertical-align: 2px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); margin: 14px 22px 0; border: 1px solid var(--rule); border-radius: 2px; }
.stat { padding: 9px 4px 8px; text-align: center; border-right: 1px solid var(--rule); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font: 700 21px/1.05 var(--display); letter-spacing: .02em; font-variant-numeric: tabular-nums; }
.stat span { color: var(--soft); font-size: 11px; }

.controls { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; padding: 14px 22px; border-bottom: 1px solid var(--rule); }
.slider { display: grid; gap: 6px; font-size: 12px; color: var(--soft); }
.row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.val { color: var(--white); font-weight: 600; font-variant-numeric: tabular-nums; }
input[type=range] { width: 100%; margin: 0; accent-color: var(--blue); }
.btns { grid-column: 1 / -1; }
.toggle { display: inline-flex; align-items: center; gap: 8px; padding: 0; cursor: pointer; background: none; border: 0; font-size: 13px; color: var(--soft); }
.toggle .sw { position: relative; width: 30px; height: 17px; border-radius: 9px; background: var(--rule); transition: background .15s; }
.toggle .sw::after { content: ""; position: absolute; left: 2px; top: 2px; width: 13px; height: 13px; border-radius: 50%; background: var(--white); transition: transform .15s; }
.toggle.on { color: var(--white); }
.toggle.on .sw { background: var(--blue); }
.toggle.on .sw::after { transform: translateX(13px); }
.ghost { padding: 7px 11px; cursor: pointer; background: none; border: 1px solid var(--rule); border-radius: 2px; font: 600 12.5px/1 var(--body); color: var(--white); }
.ghost:hover { border-color: var(--blue); }
.quality { grid-column: 1 / -1; display: flex; align-items: center; gap: 8px; margin: 0; color: var(--faint); font-size: 11.5px; }
.quality .dot { flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }

/* ---------- Days ---------- */
.days { flex: 1 0 auto; }
.day { border-bottom: 1px solid var(--rule); }
.dayhead { display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 12px; width: 100%; padding: 11px 22px;
    text-align: left; cursor: pointer; background: none; border: 0; }
.dayhead:hover, .day.open .dayhead { background: var(--raise); }
.num { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 2px; color: var(--navy);
    font: 700 16px/1 var(--display); font-variant-numeric: tabular-nums; }
.dayhead b { display: block; font: 600 14px/1.25 var(--body); }
.dayhead small { display: block; margin-top: 1px; color: var(--soft); font-size: 12px; }
.dayhead .meta { color: var(--soft); font-size: 12px; text-align: right; font-variant-numeric: tabular-nums; line-height: 1.35; }
.daybody { padding: 2px 22px 14px 64px; background: var(--raise); }
.daylinks { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 10px; }
.daylinks a, .daylinks button { padding: 6px 9px; color: var(--white); background: var(--navy); border: 1px solid var(--rule);
    border-radius: 2px; font: 600 12px/1 var(--body); text-decoration: none; cursor: pointer; }
.daylinks a:hover, .daylinks button:hover { border-color: var(--blue); }
.stops { margin: 0; padding: 0; list-style: none; border-left: 2px solid var(--rule); }
.stops li { position: relative; display: grid; grid-template-columns: 50px 1fr; gap: 6px; padding: 6px 0 6px 12px; cursor: pointer; }
.stops li::before { content: ""; position: absolute; left: -5px; top: 11px; width: 8px; height: 8px; border-radius: 50%;
    background: var(--navy); border: 2px solid var(--white); }
.stops li.cw::before { border-color: var(--brick); }
.stops li:hover .t { color: var(--blue); }
.stops .id { font: 600 11.5px/1.6 var(--body); color: var(--soft); font-variant-numeric: tabular-nums; }
.stops .t { font: 600 15px/1.15 var(--display); letter-spacing: .03em; text-transform: uppercase; }
.stops .c { display: block; margin-top: 2px; color: var(--soft); font: 400 12px/1.3 var(--body); text-transform: none; letter-spacing: 0; }
.stops li.leg { cursor: default; color: var(--faint); font-size: 12px; }
.stops li.leg::before { background: var(--faint); border-color: var(--faint); width: 6px; height: 6px; left: -4px; }
.loadmsg { padding: 14px 22px; color: var(--soft); }

.foot { padding: 11px 22px 13px; border-top: 1px solid var(--rule); font-size: 11.5px; line-height: 1.5; color: var(--soft); }
.foot p { margin: 6px 0 0; }
.src summary { margin-top: 8px; cursor: pointer; color: var(--white); font-weight: 600; }
.src[open] { max-height: 30vh; overflow-y: auto; }
.keys { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.key { display: inline-flex; align-items: center; gap: 6px; }
.key i { display: inline-block; width: 9px; height: 9px; border-radius: 1px; }
.k-marker { background: #d6dbde; }
.k-cw { background: var(--brick); }
.k-battle { background: var(--brick); transform: rotate(45deg); }
.k-site { background: var(--gold); transform: rotate(45deg); }

/* ---------- Plaque: the real marker's cast silver, black border and capitals ---------- */
.plaque { position: fixed; z-index: 5; width: 344px; max-height: calc(100vh - 24px); overflow-y: auto; padding: 16px 18px 13px;
    color: #111; border-radius: 2px; background: linear-gradient(160deg, #f1f3f4, #c9cfd2 55%, #e1e5e7); border: 3px solid #15191c;
    box-shadow: 0 0 0 1px #9aa3a8, 0 24px 60px #000a; pointer-events: none; }
.plaque.pinned { pointer-events: auto; }
.plaque .ttl { margin: 0 0 7px; font: 700 22px/1 var(--display); letter-spacing: .04em; text-transform: uppercase; text-align: center; }
.plaque .txt { margin: 0; font: 500 13.5px/1.45 var(--body); text-align: center; }
.plaque .loc { margin-top: 7px; font-size: 12px; color: #333; }
.plaque .tag { display: inline-block; margin: 0 0 7px; padding: 3px 7px; color: #fff; background: var(--brick); border-radius: 1px;
    font: 700 10px/1.2 var(--body); letter-spacing: .1em; text-transform: uppercase; }
.plaque .tag.site { background: #8a6a24; }
.plaque .tag.hub { background: var(--navy); }
.plaque .meta { display: flex; justify-content: space-between; gap: 8px; margin-top: 11px; padding-top: 8px; border-top: 1px solid #0003;
    font: 600 11.5px/1.35 var(--body); color: #333; font-variant-numeric: tabular-nums; }
.plaque .meta b { color: #111; }
.plaque .acts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.plaque .acts a { padding: 6px 9px; color: var(--white); background: var(--navy); border-radius: 2px; font: 600 12px/1 var(--body); text-decoration: none; }
.plaque .acts a:hover { background: color-mix(in srgb, var(--navy) 80%, var(--blue)); }
.plaque .close { position: absolute; top: 4px; right: 6px; padding: 2px 6px; color: #333; background: none; border: 0; cursor: pointer; font-size: 18px; }
.plaque .center { text-align: center; }
.plaque .q { margin: 11px 0 0; padding: 10px 2px 0; border-top: 1px solid #0003; }
.plaque .q blockquote { margin: 0; font: italic 400 15px/1.45 var(--serif); color: #15191c; }
.plaque .q figcaption { display: flex; flex-wrap: wrap; gap: 2px 8px; margin-top: 7px; font: 500 12px/1.4 var(--body); color: #444; }
.plaque .q .who { color: #111; font-weight: 700; }
.plaque .q .who a, .plaque .q .rec { color: #1b4d79; }
.plaque .q .why { flex-basis: 100%; color: #555; }

.hint { position: fixed; right: 16px; bottom: 14px; font: 500 11.5px/1.6 var(--body); color: var(--faint); pointer-events: none;
    text-shadow: 0 1px 3px var(--deep); }
.loading { position: fixed; inset: 0; z-index: 10; display: grid; place-items: center; background: var(--navy); transition: opacity .6s; }
.loading span { font: 700 20px/1 var(--display); letter-spacing: .14em; text-transform: uppercase; color: var(--soft); }
.loading span::after { content: ""; display: block; height: 2px; margin-top: 12px; background: linear-gradient(90deg, transparent, var(--blue), transparent);
    background-size: 200% 100%; animation: sweep 1.4s linear infinite; }
@keyframes sweep { from { background-position: 100% 0; } to { background-position: -100% 0; } }
.loading.done { opacity: 0; pointer-events: none; }

@media (max-width: 760px) {
    .panel { left: 0; right: 0; top: auto; bottom: 0; width: auto; height: 50vh; border-radius: 2px 2px 0 0; border-width: 1px 0 0;
        padding-bottom: env(safe-area-inset-bottom, 0px); transition: height .25s; }
    .panel.full { height: calc(100vh - 56px); }
    .panel.mini { height: 150px; }
    .grip { display: block; height: 20px; width: 100%; padding: 0; background: none; border: 0; cursor: pointer; }
    .grip::before { content: ""; display: block; width: 40px; height: 4px; margin: 8px auto; border-radius: 2px; background: var(--rule); }
    .top { padding: 0 16px; }
    .brand { display: none; }
    h1 { margin: 0; font-size: 22px; }
    .search, .stats { margin-left: 16px; margin-right: 16px; }
    .trip, .controls, .menu { padding-left: 16px; padding-right: 16px; }
    .blurb { display: none; }
    .dayhead { padding: 10px 16px; }
    .daybody { padding-left: 58px; padding-right: 16px; }
    .plaque { left: 8px !important; right: 8px; top: calc(env(safe-area-inset-top, 0px) + 8px) !important; width: auto; max-height: 48vh; }
    .hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    .panel, .loading, .toggle .sw, .toggle .sw::after { transition: none; }
    .loading span::after { animation: none; }
}