/* Start Cold - frost paper, glacier ink, ember accents; layer colours are the same in both themes' families. */
:root {
  --bg: #e9eff2; --paper: #fbfdfe; --ink: #14212b; --muted: #556773; --line: #c9d5dc; --soft: #dfe8ed;
  --accent: #c8502a; --accent-ink: #ffffff; --glacier: #1d5c78; --ok: #2f7a4f; --warn: #a8660d; --bad: #b23a2e;
  --l-base: #5d8c6c; --l-mid: #cf962a; --l-puffy: #bf5236; --l-shell: #356b93; --l-acc: #6b7d89;
  --strip-air: #7b8f9b; --strip-feels: #1d5c78; --freeze: #8fb7cf;
  --shadow: 0 1px 2px rgba(20, 33, 43, .06), 0 6px 18px rgba(20, 33, 43, .06);
  --r: 12px; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Avenir Next", "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0c1319; --paper: #141f28; --ink: #e3ebf0; --muted: #94a6b2; --line: #2a3a46; --soft: #1b2934;
  --accent: #ef7a4c; --accent-ink: #1a0d07; --glacier: #7cc3e3; --ok: #6cc28f; --warn: #e5a54a; --bad: #f07a6c;
  --l-base: #6fa682; --l-mid: #d9a640; --l-puffy: #d8694b; --l-shell: #5b95c2; --l-acc: #8597a3;
  --strip-air: #6f8593; --strip-feels: #7cc3e3; --freeze: #35596f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 22px rgba(0, 0, 0, .25);
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 var(--sans); }
a { color: var(--glacier); }
code, .mono { font-family: var(--mono); font-size: .88em; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
.warn { color: var(--warn); }

/* header */
.bar { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 12px; padding: 10px 20px; background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.back { color: var(--muted); text-decoration: none; font-size: .9rem; white-space: nowrap; }
.brand { display: flex; align-items: center; gap: 8px; font-size: 1.05rem; letter-spacing: .01em; }
.logo { width: 28px; height: 28px; }
.lg-mtn { fill: var(--glacier); }
.lg-snow { fill: none; stroke: var(--paper); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.lg-base { stroke: var(--accent); stroke-width: 2.4; stroke-linecap: round; }
.session { margin-left: auto; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.pill { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); border-radius: 999px; padding: 6px 13px; font: inherit; font-size: .88rem; cursor: pointer; text-decoration: none; }
.pill:hover:not(:disabled) { border-color: var(--glacier); }
.pill.solid { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.pill.solid:hover:not(:disabled) { filter: brightness(1.06); border-color: var(--accent); }
.pill.ghost { background: transparent; }
.pill.tiny { padding: 2px 9px; font-size: .78rem; }
.pill.big { padding: 10px 20px; font-size: 1rem; }
.pill:disabled { opacity: .5; cursor: not-allowed; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 18px 20px 40px; }
.hero { padding: 26px 0 10px; }
.kicker { margin: 0; color: var(--accent); text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; }
.hero h1 { margin: 6px 0 10px; font-size: clamp(1.9rem, 4.6vw, 3.1rem); line-height: 1.08; letter-spacing: -.02em; }
.hero h1 em { font-style: normal; color: var(--glacier); }
.lede { max-width: 760px; margin: 0 0 14px; color: var(--muted); font-size: 1.04rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chips-label { color: var(--muted); font-size: .88rem; }
.chip { border: 1px dashed var(--line); background: transparent; color: var(--ink); border-radius: 8px; padding: 6px 12px; font: inherit; font-size: .9rem; cursor: pointer; }
.chip:hover { border-color: var(--glacier); }
.chip.on { border-style: solid; border-color: var(--glacier); background: var(--soft); }

.sheet { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px; margin: 16px 0; box-shadow: var(--shadow); min-width: 0; }
.sheet h2 { margin: 0 0 12px; font-size: 1.18rem; display: flex; align-items: center; gap: 10px; }
.sheet h3 { margin: 14px 0 8px; font-size: 1rem; }
.stepno { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--glacier); color: var(--paper); font-size: .85rem; font-weight: 700; flex: none; }
.two { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 16px; }
.two > .sheet { margin: 16px 0 0; }

/* the day */
.units { display: inline-flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; margin-bottom: 12px; }
.seg { border: 0; background: transparent; color: var(--muted); padding: 6px 12px; font: inherit; font-size: .85rem; cursor: pointer; }
.seg.on { background: var(--glacier); color: var(--paper); }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px 12px; }
.f { display: block; font-size: .82rem; color: var(--muted); font-weight: 600; min-width: 0; }
.f input, .f select, .f textarea { display: block; margin-top: 4px; }
.f.wide { grid-column: span 2; }
.f .u { font-weight: 400; margin-left: 2px; }
.f .opt { font-weight: 400; font-style: italic; }
.f .u, .f .opt { display: inline; }
.f .opt { margin-left: 4px; }
input[type=text], select, textarea { width: 100%; min-width: 0; font: inherit; font-size: .95rem; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; }
textarea { resize: vertical; line-height: 1.45; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--glacier) 45%, transparent); outline-offset: 1px; }
.day .f.wide:last-child { grid-column: 1 / -1; }

/* closet */
.drop { border: 1px dashed transparent; border-radius: 10px; }
.drop.over { border-color: var(--glacier); background: var(--soft); }
.drop textarea { font-family: var(--mono); font-size: .88rem; }
.drop-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 6px; }
.filebtn { color: var(--glacier); text-decoration: underline; cursor: pointer; font-size: .86rem; }
.filebtn input { display: none; }
.readlist { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 4px; max-height: 260px; overflow: auto; }
.rd { display: grid; grid-template-columns: 34px 82px minmax(0, 1fr) auto; gap: 2px 8px; align-items: baseline; padding: 4px 8px 4px 10px; border-left: 4px solid var(--l-acc); background: var(--bg); border-radius: 6px; font-size: .86rem; }
.rd b { font-weight: 600; overflow-wrap: anywhere; }
.rd .facts { grid-column: 3 / 4; color: var(--muted); font-size: .78rem; }
.rd .grams { grid-row: 1; grid-column: 4; color: var(--muted); font-size: .76rem; }
.rd .slot { color: var(--muted); font-size: .78rem; }
.rd.flash { outline: 2px solid var(--accent); }
.iid { font-family: var(--mono); font-size: .76rem; color: var(--muted); }
.sl-base { border-color: var(--l-base) !important; } .sl-mid { border-color: var(--l-mid) !important; }
.sl-puffy { border-color: var(--l-puffy) !important; } .sl-shell { border-color: var(--l-shell) !important; }
.rd.cotton { background: repeating-linear-gradient(135deg, var(--bg) 0 8px, color-mix(in srgb, var(--bad) 10%, var(--bg)) 8px 16px); }
.notes { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 4px; }
.notes li { padding: 6px 10px; border-radius: 8px; background: var(--soft); font-size: .88rem; }
.notes li.warn { color: var(--ink); border-left: 4px solid var(--warn); }
.notes li.bad { border-left: 4px solid var(--bad); }
.notes li.ok { border-left: 4px solid var(--ok); }
.notes li.info { border-left: 4px solid var(--l-acc); }
.notes li.none { color: var(--muted); }

/* strip + stacks */
.stack-top { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.stack-top h2 { margin: 0; }
.stack-top .units { margin: 0 0 0 auto; }
.verdict-tag { font-size: .82rem; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--soft); }
.v-ready { background: color-mix(in srgb, var(--ok) 18%, var(--paper)); color: var(--ok); }
.v-adjust { background: color-mix(in srgb, var(--warn) 18%, var(--paper)); color: var(--warn); }
.v-rethink { background: color-mix(in srgb, var(--bad) 16%, var(--paper)); color: var(--bad); }
.strip-wrap { background: linear-gradient(180deg, var(--soft), transparent); border-radius: 10px; padding: 6px 6px 2px; }
.strip-chart { width: 100%; height: auto; display: block; max-height: 140px; }
.air-line { fill: none; stroke: var(--strip-air); stroke-width: 2; stroke-dasharray: 5 5; }
.feels-line { fill: none; stroke: var(--strip-feels); stroke-width: 3; }
.air-dot { fill: var(--strip-air); }
.feels-dot { fill: var(--strip-feels); }
.feels-dot.est { fill: var(--paper); stroke: var(--strip-feels); stroke-width: 2; }
.feels-t { fill: var(--ink); font: 600 13px var(--sans); }
.freeze { stroke: var(--freeze); stroke-width: 1.5; stroke-dasharray: 2 4; }
.freeze-t { fill: var(--muted); font: 11px var(--sans); }
.strip-cells { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 2px; }
.cell { display: flex; flex-direction: column; padding: 6px 8px; border-top: 3px solid var(--glacier); font-size: .84rem; }
.cell.ph-top { border-top-color: var(--accent); }
.cell-ph { font-weight: 700; }
.cell-clock, .cell-feels { color: var(--muted); font-size: .8rem; }
.strip-legend { margin: 6px 4px 4px; }
.lg-air::before { content: ""; display: inline-block; width: 18px; border-top: 2px dashed var(--strip-air); vertical-align: middle; margin-right: 4px; }
.lg-feels::before { content: ""; display: inline-block; width: 18px; border-top: 3px solid var(--strip-feels); vertical-align: middle; margin-right: 4px; }
.stacks { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 14px; align-items: end; }
.stack { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.stack-head { display: flex; flex-direction: column; }
.tower { display: flex; flex-direction: column; justify-content: flex-end; min-height: 220px; gap: 3px; padding: 6px; border-radius: 12px 12px 4px 4px; background: var(--bg); border: 1px solid var(--line); }
.slab { display: flex; flex-direction: column; justify-content: center; padding: 4px 9px; border-radius: 7px; color: #fff; border: 0 !important; min-width: 0; }
.slab.sl-base { background: var(--l-base); } .slab.sl-mid { background: var(--l-mid); color: #241703; }
.slab.sl-puffy { background: var(--l-puffy); } .slab.sl-shell { background: var(--l-shell); }
.slab.cotton { background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.0) 0 7px, rgba(255,255,255,.28) 7px 12px); outline: 2px solid var(--bad); outline-offset: -2px; }
.slab.none { color: var(--muted); background: transparent; text-align: center; font-size: .8rem; }
.slab-name { font-weight: 600; font-size: .86rem; line-height: 1.2; overflow-wrap: anywhere; }
.slab-meta { font-size: .72rem; opacity: .85; }
.skin { text-align: center; font-size: .68rem; text-transform: uppercase; letter-spacing: .2em; color: var(--muted); border-top: 2px solid color-mix(in srgb, var(--accent) 50%, var(--line)); padding-top: 2px; }
.acc { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px; min-height: 26px; }
.chip-acc { font-size: .76rem; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); border-left: 4px solid var(--l-acc); background: var(--paper); }
.chip-acc.cotton { border-color: var(--bad); }
.gauge { display: flex; flex-direction: column; gap: 2px; }
.gauge-bar { height: 8px; border-radius: 4px; background: var(--soft); overflow: hidden; }
.gauge-fill { display: block; height: 100%; background: var(--ok); border-radius: 4px; }
.gauge.short .gauge-fill { background: var(--bad); }
.gauge-t { color: var(--muted); font-size: .74rem; }
.packed { margin: 0; }
.legend { margin: 12px 0 0; }
.key { display: inline-block; padding: 0 8px; border-radius: 5px; color: #fff; font-size: .76rem; }
.key.sl-base { background: var(--l-base); } .key.sl-mid { background: var(--l-mid); color: #241703; } .key.sl-puffy { background: var(--l-puffy); } .key.sl-shell { background: var(--l-shell); }
.key.cotton { background: repeating-linear-gradient(135deg, var(--bad) 0 5px, color-mix(in srgb, var(--bad) 60%, #fff) 5px 9px); }
.readflags { list-style: none; margin: 0; padding: 0; display: grid; gap: 5px; }
.readflags li { padding: 7px 10px; border-radius: 8px; background: var(--bg); font-size: .9rem; }
.readflags .lv { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; padding: 1px 7px; border-radius: 5px; }
.lv-conditions .lv { background: var(--bad); color: #fff; }
.lv-must .lv { background: var(--warn); color: #fff; }
.lv-nice .lv { background: var(--soft); color: var(--muted); }
.readflags li.ok { border-left: 4px solid var(--ok); }
.kitline { margin: 10px 0 0; font-weight: 600; }

/* ask + progress */
.runrow { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 10px; }
.gate { padding: 8px 12px; border-radius: 8px; background: var(--soft); margin: 8px 0; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.ptitle { font-weight: 600; margin: 0 0 8px; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 3px; }
.step { color: var(--muted); font-size: .9rem; } .step.active { color: var(--ink); font-weight: 600; } .step.done { color: var(--ok); }
.step-ic { display: inline-block; width: 14px; font-family: var(--mono); }
.raw { white-space: pre-wrap; overflow-wrap: anywhere; font-family: var(--mono); font-size: .8rem; max-height: 320px; overflow: auto; }

/* result */
.rhead { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.rhead h2 { margin: 0; }
.stamp { font-weight: 800; text-transform: uppercase; letter-spacing: .12em; font-size: .9rem; padding: 4px 12px; border: 2px solid currentColor; border-radius: 6px; transform: rotate(-3deg); }
.summary { font-size: 1.02rem; }
.rphases { list-style: none; padding: 0; margin: 10px 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.rphase { padding: 10px; border-radius: 10px; background: var(--bg); border-top: 4px solid var(--glacier); min-width: 0; }
.rphase.ph-top { border-top-color: var(--accent); }
.rp-head { display: flex; flex-direction: column; }
.rphase p { margin: 6px 0; font-size: .9rem; }
.rphase .vent { color: var(--muted); }
.cites { display: flex; flex-wrap: wrap; gap: 4px; }
.cite { border: 1px solid var(--line); background: var(--paper); color: var(--ink); border-radius: 6px; font: inherit; font-size: .76rem; padding: 1px 7px; cursor: pointer; }
.cite.bad { border-color: var(--bad); color: var(--bad); text-decoration: line-through; cursor: default; }
.twocol { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; }
.lines { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.lines li { font-size: .92rem; }
.lines li p { margin: 4px 0 0; }
.lines li.none { color: var(--muted); }
.gap .lv { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 700; padding: 1px 7px; border-radius: 5px; }
.gap.must .lv { background: var(--warn); color: #fff; } .gap.nice .lv { background: var(--soft); color: var(--muted); }
.arrow { color: var(--muted); font-size: .86rem; }
.turnback { margin: 14px 0; padding: 10px 14px; border-radius: 10px; border-left: 5px solid var(--bad); background: color-mix(in srgb, var(--bad) 8%, var(--paper)); }
.turnback h3 { margin: 0 0 4px; }
.turnback p { margin: 0; }
.checklist { padding-left: 20px; margin: 0; display: grid; gap: 4px; }
.checklist li.none { list-style: none; margin-left: -20px; color: var(--muted); }
.recon h3 { margin-top: 16px; }
.tools { display: flex; gap: 8px; flex-wrap: wrap; }
.hist { list-style: none; padding: 0; margin: 10px 0 0; display: grid; gap: 6px; }
.hrow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px 10px; border-radius: 8px; background: var(--bg); }
.hinfo { display: flex; flex-direction: column; margin-right: auto; min-width: 0; }
.hist .none { color: var(--muted); font-size: .9rem; }

.foot { max-width: 1160px; margin: 0 auto; padding: 10px 20px 40px; color: var(--muted); font-size: .84rem; }
.toasts { position: fixed; right: 16px; bottom: 16px; display: grid; gap: 8px; z-index: 30; max-width: min(380px, calc(100vw - 32px)); }
.toast { padding: 9px 13px; border-radius: 9px; background: var(--ink); color: var(--paper); font-size: .88rem; box-shadow: var(--shadow); transition: opacity .5s; }
.toast.err { background: var(--bad); color: #fff; }
.toast a { color: inherit; font-weight: 700; }
.toast.gone { opacity: 0; }

/* docs pages */
.doc { max-width: 920px; margin: 0 auto; padding: 18px 20px 40px; }
.doc pre { background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; overflow: auto; font-size: .82rem; max-width: 100%; }
.doc table { border-collapse: collapse; width: 100%; font-size: .88rem; display: block; overflow-x: auto; }
.doc th, .doc td { border: 1px solid var(--line); padding: 5px 8px; text-align: left; vertical-align: top; }
.codegroup { margin: 10px 0; }
.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 4px; }
.tab { border: 1px solid var(--line); background: var(--paper); color: var(--ink); border-radius: 6px; padding: 3px 9px; font: inherit; font-size: .8rem; cursor: pointer; }
.tab.active { background: var(--glacier); color: var(--paper); border-color: var(--glacier); }
.panel { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 18px; margin: 14px 0; }
.mask { font-family: var(--mono); overflow-wrap: anywhere; }

@media (max-width: 900px) {
  .two { grid-template-columns: minmax(0, 1fr); }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stacks, .rphases { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .toasts { left: auto; right: 10px; bottom: 10px; max-width: 260px; }
  .toast { font-size: .78rem; padding: 7px 10px; }
  .bar { padding: 8px 12px; gap: 8px; }
  .back { display: none; }
  .wrap { padding: 10px 16px 30px; }
  .sheet { padding: 14px; }
  .strip-cells { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .twocol { grid-template-columns: minmax(0, 1fr); }
  .rphases { grid-template-columns: minmax(0, 1fr); }
  .rd { grid-template-columns: 30px minmax(0, 1fr) auto; }
  .rd .slot { grid-column: 2; grid-row: 2; }
  .rd b { grid-column: 2; grid-row: 1; }
  .rd .facts { grid-column: 2 / 4; grid-row: 3; }
  .rd .grams { grid-column: 3; grid-row: 1; }
  .tower { min-height: 180px; }
  .stack-top .units { margin-left: 0; }
}
.statebox { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r); padding: 12px 16px; margin: 12px 0; }
.statebox p { margin: 4px 0; }
.tokenrow { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.tokenbox { font-family: var(--mono); font-size: .84rem; background: var(--soft); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; overflow-wrap: anywhere; width: 100%; }