/* How Many Balloons - a pale morning sky by day, a navy evening sky by night, six balloon colours and a wicker basket.
 * Light and dark share one set of tokens. */
:root {
  --bg: #eaf4fb; --panel: #ffffff; --ink: #13233a; --muted: #4f6077; --line: #d3e2ee; --accent: #c8323f; --accent-ink: #ffffff; --chip: #deedf7;
  --sky1: #9fd3f5; --sky2: #e6f4fd; --cloud: #ffffff; --ground: #8cc56d; --grass: #5f9c45; --string: #4f6077;
  --c0: #e8505b; --c1: #f2b134; --c2: #1fa39b; --c3: #7d5bd6; --c4: #3b8fd9; --c5: #e86fa8; --shine: rgba(255,255,255,.55); --knot: rgba(0,0,0,.25);
  --wicker: #b9814a; --wicker-line: #8a5a2e; --rim: #7a4c25; --sign: #fff8e7; --sign-ink: #4a3410; --post: #7a4c25;
  --whisk: #3b8fd9; --dot: #c8323f; --weighed: #1f8a55; --track: #e2edf5;
  --v-bouquet-bg: #fde0ea; --v-bouquet: #8c1d4a; --v-armful-bg: #fdefc8; --v-armful: #6b4500; --v-cloud-bg: #d8ebfb; --v-cloud: #11497d; --v-grounded-bg: #dcefd6; --v-grounded: #24561a;
  --warn: #8f3d0c; --bad: #a3141b; --ok: #1f5a26; --info: #2d4a8f; --step: #1d63a6; --step-ink: #ffffff;
}
:root[data-theme="dark"] {
  --bg: #0d1626; --panel: #15213a; --ink: #eaf2fb; --muted: #a9b8cc; --line: #2b3b58; --accent: #ff7a83; --accent-ink: #2a0609; --chip: #1f2e4b;
  --sky1: #0f2142; --sky2: #2c4570; --cloud: #4a5f86; --ground: #2f4a2a; --grass: #4c7440; --string: #b9c7da;
  --c0: #ff6b74; --c1: #f7c04f; --c2: #34c2b8; --c3: #9a7cf0; --c4: #5aa9f0; --c5: #f38bbd; --shine: rgba(255,255,255,.45); --knot: rgba(0,0,0,.35);
  --wicker: #9a6a3c; --wicker-line: #6e4823; --rim: #5f3b1c; --sign: #f4ead2; --sign-ink: #3e2c0c; --post: #8a6136;
  --whisk: #5aa9f0; --dot: #ff7a83; --weighed: #52c98a; --track: #23324f;
  --v-bouquet-bg: #4c1f33; --v-bouquet: #ffd3e3; --v-armful-bg: #47360f; --v-armful: #ffe4a6; --v-cloud-bg: #173a5e; --v-cloud: #cfe6ff; --v-grounded-bg: #1f3d1b; --v-grounded: #cdeec4;
  --warn: #ffbe94; --bad: #ff9a9a; --ok: #b5e8bb; --info: #c3d2ff; --step: #9ccbf5; --step-ink: #0d1626;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; overflow-x: hidden; }
a { color: var(--accent); }
.hidden { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.small { font-size: .875rem; } .muted { color: var(--muted); } .mono { font-family: ui-monospace, Menlo, Consolas, monospace; }
.bar { display: flex; align-items: center; gap: 10px; padding: 10px 20px; border-bottom: 1px solid var(--line); background: var(--panel); flex-wrap: wrap; }
.back { text-decoration: none; color: var(--muted); font-size: .9rem; white-space: nowrap; }
.brand { display: flex; align-items: center; gap: 8px; font-size: 1.05rem; margin-right: auto; white-space: nowrap; }
.brand strong { font-weight: 800; letter-spacing: -.01em; }
.logo { width: 30px; height: 30px; flex: none; }
.lg-b { fill: var(--c0); } .lg-knot { fill: var(--c0); } .lg-shine { fill: var(--shine); } .lg-str { fill: none; stroke: var(--string); stroke-width: 1.3; }
.session { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.pill { font: inherit; font-size: .875rem; border: 1.5px solid var(--line); background: var(--panel); color: var(--ink); border-radius: 999px; padding: 5px 14px; cursor: pointer; text-decoration: none; display: inline-block; line-height: 1.3; }
.pill:hover:not(:disabled) { border-color: var(--accent); }
.pill.solid { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }
.pill.solid:hover:not(:disabled) { color: var(--accent-ink); filter: brightness(1.07); }
.pill.ghost { cursor: default; background: transparent; }
.pill.tiny { padding: 3px 11px; font-size: .8rem; }
.pill.big { padding: 10px 24px; font-size: 1rem; }
.pill:disabled { opacity: .5; cursor: not-allowed; }
main { max-width: 1060px; margin: 0 auto; padding: 18px 20px 40px; }
.hero { padding: 10px 0 6px; }
.kicker { font-size: .86rem; color: var(--muted); border-left: 4px solid var(--c1); padding: 4px 0 4px 12px; margin: 6px 0 14px; max-width: 760px; }
h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); line-height: 1.08; margin: 0 0 10px; letter-spacing: -.02em; overflow-wrap: anywhere; }
.h1b { display: block; font-size: clamp(1rem, 2.6vw, 1.25rem); font-weight: 500; color: var(--muted); letter-spacing: 0; margin-top: 6px; }
.lede { max-width: 760px; margin: 0 0 12px; }
.samples { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chip { font: inherit; font-size: .85rem; border: 1.5px solid var(--line); background: var(--chip); color: var(--ink); border-radius: 999px; padding: 4px 12px; cursor: pointer; }
.chip.on { border-color: var(--accent); background: var(--panel); font-weight: 700; }
.two-col { display: grid; grid-template-columns: 1.15fr 1fr; gap: 16px; margin-top: 16px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; margin-top: 16px; min-width: 0; }
.two-col .panel { margin-top: 0; }
.ph { display: flex; align-items: center; gap: 10px; font-size: 1.15rem; margin: 0 0 10px; }
.step-no { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--step); color: var(--step-ink); font-size: .85rem; flex: none; font-weight: 800; }
.lbl { display: block; font-size: .85rem; font-weight: 600; margin: 0 0 6px; }
textarea, input[type="text"] { width: 100%; font: inherit; font-size: .92rem; border: 1.5px solid var(--line); border-radius: 12px; padding: 9px 11px; background: var(--bg); color: var(--ink); }
textarea { resize: vertical; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .86rem; }
textarea.drop { border-color: var(--accent); border-style: dashed; }
.droprow { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
.filebtn { cursor: pointer; }
.note { background: var(--chip); border-radius: 10px; padding: 7px 10px; margin: 8px 0 0; }
.kinds { display: grid; gap: 8px; margin-bottom: 8px; }
.kind { display: flex; gap: 10px; align-items: center; border: 1.5px solid var(--line); border-radius: 14px; padding: 8px 10px; cursor: pointer; }
.kind:has(input:checked) { border-color: var(--accent); background: var(--chip); }
.kind input { accent-color: var(--accent); flex: none; }
.kind b { display: block; font-size: .92rem; }
.kind .small { display: block; }
.kind-b { flex: none; border-radius: 50% 50% 48% 48%; background: var(--c0); box-shadow: inset -3px -3px 0 rgba(0,0,0,.12); }
.k11 { width: 16px; height: 19px; background: var(--c0); } .k16 { width: 20px; height: 23px; background: var(--c2); } .k36 { width: 28px; height: 32px; background: var(--c3); }
.kf { width: 20px; height: 20px; border-radius: 4px; transform: rotate(45deg) scale(.8); background: linear-gradient(135deg, #d9dee6, #8fa0b5); }
.count-row { display: flex; gap: 14px 20px; align-items: center; flex-wrap: wrap; margin-bottom: 10px; }
.count b { display: block; font-size: clamp(1.5rem, 4.5vw, 2.1rem); line-height: 1.1; letter-spacing: -.01em; }
.count .small { display: block; }
.verdict-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; flex: 1 1 260px; }
.verdict-row p { margin: 0; flex: 1 1 200px; }
.badge { display: inline-block; font-size: .8rem; font-weight: 800; border-radius: 999px; padding: 3px 12px; background: var(--chip); color: var(--ink); white-space: nowrap; letter-spacing: .02em; }
.badge.v-bouquet { background: var(--v-bouquet-bg); color: var(--v-bouquet); }
.badge.v-armful { background: var(--v-armful-bg); color: var(--v-armful); }
.badge.v-cloud { background: var(--v-cloud-bg); color: var(--v-cloud); }
.badge.v-grounded { background: var(--v-grounded-bg); color: var(--v-grounded); }
.sky-box { border-radius: 14px; overflow: hidden; border: 1px solid var(--line); line-height: 0; max-width: 720px; margin: 0 auto; }
.sky { width: 100%; height: auto; display: block; }
.sky-top { stop-color: var(--sky1); } .sky-low { stop-color: var(--sky2); }
.cloud ellipse { fill: var(--cloud); opacity: .85; }
.ground { fill: var(--ground); } .grass { fill: none; stroke: var(--grass); stroke-width: 1.6; }
.str { fill: none; stroke: var(--string); stroke-width: 1.1; opacity: .8; }
.bl .skin { stroke: rgba(0,0,0,.12); stroke-width: .8; } .bl .shine { fill: var(--shine); } .bl .knot { fill: var(--knot); }
.bl.c0 .skin { fill: var(--c0); } .bl.c1 .skin { fill: var(--c1); } .bl.c2 .skin { fill: var(--c2); } .bl.c3 .skin { fill: var(--c3); } .bl.c4 .skin { fill: var(--c4); } .bl.c5 .skin { fill: var(--c5); }
.weave { fill: var(--wicker); stroke: var(--wicker-line); stroke-width: 1.5; } .weave-line { stroke: var(--wicker-line); stroke-width: 1.2; } .rim { fill: var(--rim); }
.sky-cap { font: 700 22px system-ui, sans-serif; fill: var(--ink); paint-order: stroke; stroke: var(--sky2); stroke-width: 4px; }
.sky-key { font: 13px system-ui, sans-serif; fill: var(--ink); paint-order: stroke; stroke: var(--ground); stroke-width: 3px; }
.post { stroke: var(--post); stroke-width: 4; } .sign { fill: var(--sign); stroke: var(--post); stroke-width: 2; }
.sign-t { font: 700 13px system-ui, sans-serif; fill: var(--sign-ink); }
.sub { font-size: 1rem; margin: 18px 0 8px; }
.strip { list-style: none; padding: 0; margin: 0; }
.srow { display: grid; grid-template-columns: minmax(90px, 1.1fr) 2.2fr minmax(110px, auto); gap: 10px; align-items: center; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: .88rem; }
.sname { overflow-wrap: anywhere; font-weight: 600; }
.sval { font-variant-numeric: tabular-nums; white-space: nowrap; text-align: right; }
.track { position: relative; height: 14px; background: var(--track); border-radius: 7px; display: block; }
.whisk { position: absolute; top: 5px; height: 4px; background: var(--whisk); border-radius: 2px; min-width: 4px; }
.whisk::before, .whisk::after { content: ""; position: absolute; top: -4px; width: 2px; height: 12px; background: var(--whisk); }
.whisk::before { left: 0; } .whisk::after { right: 0; }
.dot { position: absolute; top: 2px; width: 10px; height: 10px; margin-left: -5px; border-radius: 50%; background: var(--dot); border: 2px solid var(--panel); }
.k-weighed .dot { background: var(--weighed); border-radius: 2px; transform: rotate(45deg); }
.track-note { position: absolute; left: 8px; top: -2px; font-size: .78rem; color: var(--muted); white-space: nowrap; line-height: 18px; }
.k-grounded .sname { color: var(--muted); }
.axis-row { border-bottom: 0; padding-top: 2px; }
.axis { background: transparent; height: 18px; }
.tick { position: absolute; top: 0; transform: translateX(-50%); font-size: .72rem; color: var(--muted); white-space: nowrap; }
.tick:first-child { transform: none; } .tick:last-child { transform: translateX(-100%); }
.key-line { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 8px 0 0; }
.kl { display: inline-flex; align-items: center; gap: 6px; }
.key { display: inline-block; width: 18px; height: 10px; }
.kx-whisk { height: 4px; background: var(--whisk); } .kx-dot { width: 10px; border-radius: 50%; background: var(--dot); } .kx-weighed { width: 9px; height: 9px; background: var(--weighed); transform: rotate(45deg); }
.table-wrap { overflow-x: auto; }
.kind-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.kind-table th, .kind-table td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
.kind-table td:nth-child(n+2), .kind-table th:nth-child(n+2) { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.kind-table tr.mine td { font-weight: 700; background: var(--chip); }
.exports, .cardrow, .runrow { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.gate { background: var(--chip); border-radius: 10px; padding: 8px 10px; }
.steps { list-style: none; padding: 0; margin: 8px 0; }
.step { padding: 3px 0; color: var(--muted); } .step.active { color: var(--ink); font-weight: 600; } .step.done { color: var(--ok); }
.step-ic { display: inline-block; width: 1.2em; font-family: ui-monospace, monospace; }
.raw { white-space: pre-wrap; overflow-wrap: anywhere; font-size: .8rem; background: var(--bg); padding: 10px; border-radius: 10px; max-height: 360px; overflow: auto; }
.result h2 { margin: 2px 0 8px; font-size: 1.4rem; overflow-wrap: anywhere; }
.res-kick { margin: 0; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; font-weight: 700; font-size: .75rem; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 12px 0; }
.slip { border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px; background: var(--bg); }
.slip h4 { margin: 0 0 4px; font-size: .9rem; }
.slip p { margin: 0; }
.pinrow { display: grid; gap: 6px; margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); }
.pinrow.hidden { display: none !important; }
.pinctl { display: flex; gap: 8px; align-items: center; }
.pinctl input[type="text"] { flex: 1 1 auto; min-width: 0; width: auto; padding: 6px 10px; }
.pinctl .pill { white-space: nowrap; }
.none { color: var(--muted); font-style: italic; }
.plain-list { margin: 0; padding-left: 18px; }
.plain-list li { margin: 4px 0; }
.recon { margin: 0; padding-left: 18px; } .recon li { margin: 3px 0; } .recon li.warn { color: var(--warn); } .recon li.bad { color: var(--bad); font-weight: 600; } .recon li.info { color: var(--info); } .recon li.none { color: var(--muted); }
.saved { list-style: none; padding: 0; margin: 8px 0 0; }
.hrow { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); }
.hrow.none { color: var(--muted); font-style: italic; }
.hdot { width: 14px; height: 16px; border-radius: 50% 50% 48% 48%; flex: none; background: var(--c4); }
.hdot.v-bouquet { background: var(--c5); } .hdot.v-armful { background: var(--c1); } .hdot.v-cloud { background: var(--c4); } .hdot.v-grounded { background: var(--grass); }
.hinfo { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }
.hinfo b { overflow-wrap: anywhere; }
.hbtns { display: flex; gap: 6px; }
.foot { max-width: 1060px; margin: 0 auto; padding: 10px 20px 40px; color: var(--muted); font-size: .85rem; }
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 20; max-width: min(380px, calc(100vw - 32px)); }
.toast { background: var(--ink); color: var(--panel); padding: 10px 14px; border-radius: 12px; font-size: .88rem; transition: opacity .5s; box-shadow: 0 4px 14px rgba(0,0,0,.2); }
.toast.err { background: var(--bad); color: var(--panel); }
.toast a { color: inherit; font-weight: 700; }
.toast.gone { opacity: 0; }
@media (max-width: 820px) { .two-col, .pair { grid-template-columns: 1fr; } }
@media (max-width: 600px) {
  main { padding: 12px 16px 32px; } .bar { padding: 8px 16px; gap: 6px; } .back-t { display: none; }
  .brand { font-size: .98rem; } .panel { padding: 14px; border-radius: 14px; }
  .srow { grid-template-columns: 1fr auto; grid-template-areas: "n v" "t t"; gap: 4px 10px; }
  .srow .sname { grid-area: n; } .srow .sval { grid-area: v; } .srow .track { grid-area: t; }
  .axis-row .sname, .axis-row .sval { display: none; }
  .hrow { flex-wrap: wrap; }
}
@media print { .bar, .samples, .askbox, .histbox, .exports, .toasts, .foot { display: none !important; } .panel { break-inside: avoid; } }