/* One City, One Journey — transit-diagram look. Offline: system fonts only, no external assets. */
:root{--ink:#0f1c2e;--paper:#eef2f7;--card:#fff;--line:#c8202f;--on-line:#fff;--bus:#0b7a6b;--warn:#b3261e;--est:#975800;--mute:#55677b;--rule:#cfd9e4;--board:#0f1c2e;--board-ink:#eaf1f9;--amber:#ffd34d;--grid:rgb(15 28 46/.045);color-scheme:light dark}
@media(prefers-color-scheme:dark){:root{--ink:#e8eef6;--paper:#0a1220;--card:#121e31;--line:#ff6b7d;--on-line:#2a0a10;--bus:#4cc3ae;--warn:#ff8a80;--est:#ffbf5e;--mute:#9db0c0;--rule:#25374d;--board:#16243a;--grid:rgb(232 238 246/.04)}}
*{box-sizing:border-box}
html{height:100%;background-color:var(--paper);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:28px 28px}
body{height:100%;margin:0;color:var(--ink);font:16px/1.45 "Avenir Next","Segoe UI Variable Text","Segoe UI",system-ui,Roboto,sans-serif;padding:env(safe-area-inset-top) 14px 24px;max-width:640px;margin-inline:auto}

/* header + route strip (the one animated moment) */
header{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:18px 0 4px}
h1{margin:0;font-size:1.85rem;line-height:1.05;font-weight:850;letter-spacing:-.035em}
#badge{flex:none;display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:600;color:var(--mute);padding:4px 10px;border:1px solid var(--rule);border-radius:999px;background:var(--card)}
#badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mute)}
#badge.ok{color:var(--bus);font-weight:700}#badge.ok::before{background:var(--bus)}
.strip{display:block;width:100%;height:auto;margin:6px 0 4px;overflow:visible}
.strip .ln{fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1.1s cubic-bezier(.5,0,.2,1) .1s forwards}
.strip .metro{stroke:var(--line);stroke-width:6}.strip .feeder{stroke:var(--bus);stroke-width:4;animation-delay:.9s}
.sts circle{fill:var(--paper);stroke:var(--ink);stroke-width:3}.sts .x{stroke-width:4}
.sts .bs{fill:var(--bus)}
.sts>*{transform-box:fill-box;transform-origin:center;animation:pop .35s cubic-bezier(.3,1.6,.5,1) both;animation-delay:calc(.3s + var(--i)*60ms)}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{from{transform:scale(0)}}
@media(prefers-reduced-motion:reduce){.strip .ln{animation:none;stroke-dashoffset:0}.sts>*{animation:none}}

.small{color:var(--mute);font-size:.85rem}
main>.small,body>.small{margin:4px 0 16px}

/* From / To: a two-stop line diagram */
.pick{position:relative;margin-bottom:10px}
.pick label,.row label{display:grid;gap:3px;font-size:.8rem;line-height:18px;font-weight:600;color:var(--mute)}
.pick input{width:100%;padding-left:42px}
.pick::after{content:"";position:absolute;left:14px;bottom:18px;width:12px;height:12px}
.pick.from::after{border:3px solid var(--line);border-radius:50%;background:var(--paper)}
.pick.to::after{background:var(--line);border-radius:3px}
.pick.to::before{content:"";position:absolute;left:18px;bottom:30px;width:4px;height:67px;border-radius:2px;background:linear-gradient(var(--line),var(--ink))}
.res{position:absolute;left:0;right:0;z-index:5;background:var(--card);border:1px solid var(--rule);border-radius:12px;max-height:50vh;overflow:auto;box-shadow:0 14px 30px rgb(15 28 46/.22);margin-top:4px}.res:empty{display:none}
.res button{display:block;width:100%;text-align:left;padding:12px 14px;border:0;border-bottom:1px solid var(--rule);background:none;color:inherit;font:inherit;min-height:44px}
.res button:last-child{border-bottom:0}
.res button:hover,.res button:focus-visible{background:color-mix(in srgb,var(--line) 10%,transparent)}

select,input{font:inherit;padding:11px 12px;border:1.5px solid var(--rule);border-radius:12px;background:var(--card);color:var(--ink);min-height:48px}
select:focus-visible,input:focus-visible,button:focus-visible{outline:3px solid var(--line);outline-offset:2px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:end}

/* ticket-machine button */
.go{min-height:48px;border:0;border-radius:12px;background:var(--line);color:var(--on-line);font:inherit;font-weight:800;align-self:end;box-shadow:0 4px 0 color-mix(in srgb,var(--line) 62%,#000);transition:transform .08s,box-shadow .08s}
.go:active{transform:translateY(3px);box-shadow:0 1px 0 color-mix(in srgb,var(--line) 62%,#000)}
.full{width:100%;margin-top:18px}
.full.go{background:var(--ink);color:var(--paper);box-shadow:0 4px 0 color-mix(in srgb,var(--ink) 55%,var(--paper))}

/* presets */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chips button{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:8px 14px 8px 12px;border:1.5px solid var(--rule);border-radius:999px;background:var(--card);color:inherit;font:inherit;font-size:.85rem;font-weight:600}
.chips button::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--line)}
.chips button:nth-child(3)::before{background:var(--bus)}
.chips #swap{border-style:dashed;color:var(--mute)}.chips #swap::before{display:none}
.chips button:hover{border-color:var(--ink)}

/* result summary: departure-board panel */
.sum{position:relative;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px 14px;margin-top:20px;padding:18px 18px 16px;border-radius:16px;background:var(--board);color:var(--board-ink);overflow:hidden;font-weight:700;font-variant-numeric:tabular-nums}
.sum::before{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:linear-gradient(90deg,var(--line) 0 68%,var(--bus) 68%)}
.sum .t{font-size:1.6rem;line-height:1.2;color:var(--amber);text-shadow:0 0 16px rgb(255 211 77/.3)}
.t{font-size:1.5rem;font-weight:800;font-variant-numeric:tabular-nums}.m{color:var(--mute);align-self:end}
@media(prefers-color-scheme:dark){.sum{border:1px solid var(--rule)}}
.sum+.small{margin:10px 2px 6px}

h2{display:flex;align-items:center;gap:8px;font-size:.95rem;margin:26px 0 6px;font-weight:800}
h2::after{content:"";flex:1;height:2px;border-radius:1px;background:var(--rule)}

/* journey legs as a line diagram: dashed = walk, red = metro, teal = bus */
.leg{--c:var(--mute);position:relative;display:grid;grid-template-columns:3.5rem 1fr;gap:2px 10px;padding:14px 0 16px 36px}
.leg.metro{--c:var(--line)}.leg.bus{--c:var(--bus)}
.leg::before{content:"";position:absolute;left:10px;top:0;bottom:0;width:6px;background:var(--c)}
.leg::after{content:"";position:absolute;left:5px;top:17px;width:16px;height:16px;border-radius:50%;border:4px solid var(--c);background:var(--paper)}
.leg:not(.metro):not(.bus)::before{left:11px;width:4px;background:repeating-linear-gradient(to bottom,var(--c) 0 5px,transparent 5px 10px)}
.leg:not(.metro):not(.bus)::after{left:8px;top:19px;width:10px;height:10px;border-width:3px}
*:not(.leg)+.leg::before{top:25px;border-radius:3px 3px 0 0}
.leg:not(:has(+.leg))::before{bottom:6px;border-radius:0 0 3px 3px}
.leg .tm{font-variant-numeric:tabular-nums;font-weight:800}
.leg b{font-weight:800}

/* tags */
.tag{display:inline-block;font-size:.68rem;font-weight:800;line-height:1.5;padding:0 7px;border-radius:999px;border:1.5px solid currentColor;margin-left:6px;vertical-align:middle;background:color-mix(in srgb,currentColor 10%,transparent)}
.tag.REAL{color:var(--bus)}.tag.ESTIMATE,.tag.SAMPLE{color:var(--est)}.tag.MISSING{color:var(--warn)}

/* fares: receipt rows */
.fare{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:9px 0;border-bottom:1.5px dashed var(--rule)}
.fare b{font-variant-numeric:tabular-nums;font-size:1.05rem}
.lnk{background:none;border:0;color:inherit;font:inherit;text-align:left;min-height:44px;padding:4px 0}
.lnk[data-del]{min-width:44px;text-align:center;border-radius:50%;color:var(--mute)}
.lnk[data-del]:hover{color:var(--warn)}

/* warnings */
.gap{margin:12px 0;padding:12px 14px;border-radius:12px;border-left:5px solid var(--warn);background:color-mix(in srgb,var(--warn) 9%,transparent);color:var(--warn);font-weight:700}

footer{margin-top:32px;padding-top:14px;border-top:1.5px dashed var(--rule);font-size:.78rem;line-height:1.55;color:var(--mute)}

/* desktop: planner on the left, result on the right, full width */
code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em;padding:1px 5px;border-radius:5px;background:color-mix(in srgb,currentColor 12%,transparent)}
@media(min-width:900px){
body{max-width:1280px;padding-inline:48px}
header{padding-top:28px}
h1{font-size:2.6rem}
#badge{font-size:.85rem}
.strip{margin:10px 0 6px}
main{display:grid;grid-template-columns:minmax(340px,430px) 1fr;grid-template-rows:auto auto auto auto auto 1fr;column-gap:56px;align-items:start}
main>.pick,main>.row,main>#pre,main>#saved{grid-column:1}
main>#out{grid-column:2;grid-row:1/-1;margin-top:-10px}
.sum{margin-top:0}
.sum .t{font-size:2.2rem}
.leg{grid-template-columns:4.5rem 1fr;font-size:1.05rem}
footer{margin-top:48px;max-width:900px}
}