@font-face { font-family: "Atkinson"; src: url(/fonts/atkinson-400.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Atkinson"; src: url(/fonts/atkinson-700.woff2) format("woff2"); font-weight: 700; font-display: swap; }

/* ---------- tokens ---------- */
:root {
  --bg: #F3F6F5;
  --surface: #FFFFFF;
  --surface-2: #EAF0EE;
  --ink: #17252E;
  --ink-soft: #4F5F68;
  --rim: #2B5C8A;
  --rim-soft: #E3EDF6;
  --display: #F4D35E;
  --display-ink: #1F1A08;
  --line: #D5DDDA;
  --tomato: #B83A2E;
  --shadow: 0 1px 2px rgba(23, 37, 46, .06), 0 4px 16px rgba(23, 37, 46, .05);
  --radius: 14px;
  --main: 46rem;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0F1519; --surface: #172026; --surface-2: #1D2830; --ink: #E7EDEB; --ink-soft: #A3B1B8;
  --rim: #8DB8E0; --rim-soft: #1C2D3C; --display: #E7C44E; --line: #2B3A43; --tomato: #E58A7F;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.25);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0F1519; --surface: #172026; --surface-2: #1D2830; --ink: #E7EDEB; --ink-soft: #A3B1B8;
    --rim: #8DB8E0; --rim-soft: #1C2D3C; --display: #E7C44E; --line: #2B3A43; --tomato: #E58A7F;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.25);
    color-scheme: dark;
  }
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 1.0625rem/1.6 "Atkinson", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-variant-numeric: tabular-nums;
}
a { color: var(--rim); text-underline-offset: .15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--rim); outline-offset: 2px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: .5rem; background: var(--surface); padding: .5rem .8rem; border-radius: 8px; z-index: 50; }
.skip:focus { left: .5rem; }
.ico { flex: none; }

h1 { font-size: clamp(1.6rem, 4.6vw, 2.25rem); line-height: 1.15; margin: .25rem 0 1rem; letter-spacing: -.02em; }
h2 { font-size: 1.25rem; line-height: 1.3; margin: 2.25rem 0 .7rem; letter-spacing: -.01em; }
p { margin: 0 0 1rem; }
.lede { color: var(--ink-soft); font-size: 1.1rem; }
.crumbs { font-size: .9rem; color: var(--ink-soft); margin: 0 0 .25rem; }
.crumbs a { color: var(--ink-soft); }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--surface) 92%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.top-in { max-width: 84rem; margin: 0 auto; padding: .55rem 1rem; display: grid; grid-template-columns: auto 1fr auto; grid-template-areas: "brand search theme" "tabs tabs tabs"; align-items: center; gap: .5rem .75rem; }
.brand { grid-area: brand; display: flex; align-items: center; gap: .5rem; text-decoration: none; color: var(--ink); font-size: 1.15rem; letter-spacing: -.01em; }
.brand b, .foot-brand b { color: var(--rim); }
.brand-mark { width: 30px; height: 30px; color: var(--ink); }
.tabs { grid-area: tabs; display: flex; gap: .25rem; overflow-x: auto; white-space: nowrap; scrollbar-width: none; margin: 0 -1rem; padding: 0 1rem; }
.tabs::-webkit-scrollbar { display: none; }
.tabs a { display: inline-flex; align-items: center; gap: .4rem; padding: .4rem .7rem; border-radius: 999px; color: var(--ink-soft); text-decoration: none; font-size: .95rem; }
.tabs a:hover { background: var(--surface-2); color: var(--ink); }
.tabs a[aria-current] { background: var(--rim-soft); color: var(--rim); font-weight: 700; }
.hsearch { grid-area: search; position: relative; justify-self: end; width: 100%; max-width: 18rem; }
.hsearch .ico { position: absolute; left: .7rem; top: 50%; transform: translateY(-50%); color: var(--ink-soft); pointer-events: none; }
.hsearch input { padding: .45rem .8rem .45rem 2.2rem; border-radius: 999px; border: 1px solid var(--line); background: var(--surface-2); font-size: .95rem; }
.theme { grid-area: theme; width: 2.5rem; height: 2.5rem; padding: 0; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); display: grid; place-items: center; cursor: pointer; }
.theme:hover { background: var(--surface-2); }
.t-sun, .t-moon { display: grid; }
.t-sun { display: none; }
:root[data-theme="dark"] .t-sun { display: grid; }
:root[data-theme="dark"] .t-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .t-sun { display: grid; }
  :root:not([data-theme="light"]) .t-moon { display: none; }
}
@media (max-width: 30rem) { .hsearch { display: none; } .top-in { grid-template-areas: "brand . theme" "tabs tabs tabs"; } }
@media (min-width: 60rem) {
  .top-in { grid-template-columns: auto 1fr auto auto; grid-template-areas: "brand tabs search theme"; padding: .6rem 1.5rem; }
  .tabs { margin: 0; padding: 0; justify-content: center; }
}

/* ---------- layout ---------- */
.layout { max-width: 84rem; margin: 0 auto; padding: 1.25rem 1rem 3rem; display: grid; grid-template-columns: minmax(0, 1fr); gap: 2rem; }
main { min-width: 0; }
.side-left { display: none; }
.side-right { display: grid; gap: 1rem; align-content: start; }
@media (min-width: 60rem) {
  .layout { grid-template-columns: minmax(0, var(--main)) 300px; justify-content: center; padding: 2rem 1.5rem 4rem; gap: 2.5rem; }
  .side-right { position: sticky; top: 5.5rem; }
}
@media (min-width: 78rem) {
  .layout { grid-template-columns: 220px minmax(0, var(--main)) 300px; }
  .side-left { display: block; position: sticky; top: 5.5rem; max-height: calc(100vh - 7rem); overflow-y: auto; scrollbar-width: thin; padding-right: .25rem; }
}
.layout.wide { padding-top: 1.5rem; }

/* left browse panel */
.side-h { font-size: .8rem; font-weight: 700; color: var(--ink-soft); letter-spacing: .02em; margin: 1.25rem 0 .4rem; }
.browse > .side-h:first-child { margin-top: 0; }
.tool-list, .plain { list-style: none; margin: 0; padding: 0; }
.tool-list a { display: flex; align-items: center; gap: .55rem; padding: .4rem .55rem; border-radius: 8px; color: var(--ink); text-decoration: none; font-size: .95rem; }
.tool-list a:hover { background: var(--surface); }
.plain a { display: block; padding: .2rem .55rem; border-radius: 6px; color: var(--ink-soft); text-decoration: none; font-size: .92rem; }
.plain a:hover { color: var(--ink); background: var(--surface); }
.plain a[aria-current] { color: var(--rim); background: var(--rim-soft); font-weight: 700; }
.browse details { margin: 0 0 .1rem; }
.browse summary { cursor: pointer; padding: .35rem .55rem; border-radius: 8px; font-size: .95rem; list-style: none; display: flex; justify-content: space-between; }
.browse summary::-webkit-details-marker { display: none; }
.browse summary::after { content: "+"; color: var(--ink-soft); }
.browse details[open] summary::after { content: "−"; }
.browse summary:hover { background: var(--surface); }

/* right panel */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; box-shadow: var(--shadow); }
.panel .side-h { margin-top: 0; }
.pop { list-style: none; margin: 0; padding: 0; }
.pop a { display: flex; justify-content: space-between; gap: 1rem; padding: .5rem 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; font-size: .95rem; }
.pop li:last-child a { border-bottom: 0; }
.pop a span { font-weight: 700; color: var(--rim); white-space: nowrap; }
.pop a:hover { color: var(--rim); }
.small { font-size: .92rem; color: var(--ink-soft); margin: 0; }
.side-ad { display: grid; justify-items: center; gap: .25rem; min-height: 620px; }

/* ---------- the answer: scale display ---------- */
.scale {
  background: var(--display); color: var(--display-ink);
  border: 3px solid #17252E; border-radius: 18px;
  padding: 1.1rem 1.3rem 1.2rem; margin: 0 0 1.25rem;
  box-shadow: inset 0 0 0 3px rgba(255,255,255,.35), var(--shadow);
}
.scale-q { font-size: 1.02rem; margin: 0 0 .15rem; }
.scale-a { font-size: clamp(2.8rem, 13vw, 4.2rem); font-weight: 700; line-height: 1; letter-spacing: -.035em; margin: 0; }
.scale-a small { font-size: .42em; letter-spacing: 0; margin-left: .12em; }
.scale-a.dur { font-size: clamp(2.1rem, 10vw, 3.2rem); letter-spacing: -.025em; }
.scale-extra { margin: .6rem 0 0; font-size: .97rem; }

/* ---------- content blocks ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; box-shadow: var(--shadow); margin: 0 0 1.25rem; }
table { width: 100%; border-collapse: collapse; background: var(--surface); }
th, td { text-align: left; padding: .6rem .8rem; border-bottom: 1px solid var(--line); }
th { font-size: .88rem; color: var(--ink-soft); font-weight: 700; background: var(--surface-2); }
td.n, th.n { text-align: right; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: color-mix(in srgb, var(--rim-soft) 50%, transparent); }
.tablewrap { border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; margin-bottom: 1rem; box-shadow: var(--shadow); background: var(--surface); }
caption { text-align: left; font-size: .88rem; color: var(--ink-soft); padding: .6rem .8rem; caption-side: bottom; }

.note { background: var(--rim-soft); border-radius: 10px; padding: .75rem 1rem; margin: 0 0 1rem; }
.source { font-size: .9rem; color: var(--ink-soft); }
details.source { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: .7rem 1rem; margin: 1rem 0; }
.source summary { cursor: pointer; font-weight: 700; color: var(--ink); }
.source ul { padding-left: 1.1rem; }

.links { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); gap: .5rem; }
.links a { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: .55rem .8rem; text-decoration: none; color: var(--ink); height: 100%; }
.links a:hover { border-color: var(--rim); color: var(--rim); }

.caution { border: 2px solid var(--tomato); background: color-mix(in srgb, var(--tomato) 6%, var(--surface)); border-radius: 12px; padding: .85rem 1rem; margin: 1.25rem 0; }
.caution p { margin: 0; }
.affiliate { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: .85rem 1rem; margin: 1.5rem 0; }
.affiliate p { margin: 0 0 .3rem; }
.affiliate p:last-child { margin: 0; }
.slot { min-height: 280px; margin: 1.5rem 0; display: grid; place-items: center; }
.slot-label { font-size: .75rem; color: var(--ink-soft); }
.sponsor { border: 1px dashed var(--line); border-radius: 12px; padding: .8rem 1rem; font-size: .95rem; margin: 1.5rem 0; }
@media (min-width: 60rem) { main .slot { display: none; } }

/* ---------- forms and tools ---------- */
.tool { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem .3rem; box-shadow: var(--shadow); margin: 0 0 1.25rem; }
label { display: block; font-weight: 700; margin: 0 0 .3rem; font-size: .95rem; }
fieldset { border: 0; padding: 0; margin: 0 0 .9rem; }
legend { padding: 0; }
input, select, textarea, button {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1.5px solid var(--line); border-radius: 10px; padding: .6rem .75rem; width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--rim); outline: 3px solid var(--rim-soft); }
button { background: var(--rim); color: #fff; border-color: var(--rim); font-weight: 700; cursor: pointer; width: auto; }
.field { margin: 0 0 .9rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
textarea { min-height: 12rem; resize: vertical; line-height: 1.5; }
.out { white-space: pre-wrap; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: .75rem 1rem; min-height: 3rem; }
.out li { margin: .15rem 0; }
.warn { color: var(--tomato); }
.hl td { background: var(--display) !important; color: var(--display-ink); font-weight: 700; }
.check { display: flex; gap: .5rem; align-items: center; font-weight: 400; }
.check input { width: auto; }
.steps { padding-left: 1.2rem; margin: .5rem 0 0; }
.steps li { margin: .25rem 0; }
.seg { display: flex; gap: .4rem; flex-wrap: wrap; }
.seg label { font-weight: 400; display: flex; align-items: center; gap: .35rem; border: 1.5px solid var(--line); border-radius: 999px; padding: .35rem .8rem; margin: 0; cursor: pointer; background: var(--surface); }
.seg input { width: auto; margin: 0; accent-color: var(--rim); }
.seg label:has(input:checked) { border-color: var(--rim); background: var(--rim-soft); color: var(--rim); font-weight: 700; }

/* ---------- home ---------- */
.hero { background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%); border-bottom: 1px solid var(--line); }
.hero-in { max-width: 60rem; margin: 0 auto; padding: 2.5rem 1rem 2rem; text-align: center; }
.hero h1 { font-size: clamp(1.9rem, 6vw, 3rem); margin: 0 auto .6rem; max-width: 20ch; }
.hero .lede { max-width: 42rem; margin: 0 auto 1.4rem; }
.bigsearch { position: relative; max-width: 36rem; margin: 0 auto 1rem; }
.bigsearch .ico { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); color: var(--ink-soft); }
.bigsearch input { padding: .95rem 7rem .95rem 3rem; font-size: 1.1rem; border-radius: 999px; box-shadow: var(--shadow); border: 1.5px solid var(--line); }
.bigsearch button { position: absolute; right: .4rem; top: .4rem; bottom: .4rem; border-radius: 999px; padding: 0 1.2rem; }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: .4rem; margin: 0; padding: 0; list-style: none; }
.chips a { display: inline-block; padding: .35rem .8rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); color: var(--ink); text-decoration: none; font-size: .92rem; }
.chips a:hover { border-color: var(--rim); color: var(--rim); }
.tool-cards { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: .9rem; }
.tool-cards a { display: grid; grid-template-columns: auto 1fr; gap: .2rem .8rem; align-items: start; height: 100%; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; box-shadow: var(--shadow); color: var(--ink); text-decoration: none; transition: border-color .15s, transform .15s; }
.tool-cards a:hover { border-color: var(--rim); transform: translateY(-2px); }
.tool-cards .tc-ico { grid-row: span 2; width: 2.6rem; height: 2.6rem; border-radius: 12px; display: grid; place-items: center; background: var(--rim-soft); color: var(--rim); }
.tool-cards strong { font-size: 1.05rem; }
.tool-cards span { color: var(--ink-soft); font-size: .93rem; line-height: 1.45; }
.groups { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: .9rem; }
.group-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; box-shadow: var(--shadow); }
.group-card h3 { margin: 0 0 .5rem; font-size: 1.02rem; }
.group-card ul { list-style: none; margin: 0; padding: 0; font-size: .95rem; }
.group-card li { padding: .15rem 0; }
@media (prefers-reduced-motion: reduce) { .tool-cards a { transition: none; } .tool-cards a:hover { transform: none; } }

/* ---------- footer ---------- */
.foot { background: var(--surface); border-top: 1px solid var(--line); color: var(--ink-soft); font-size: .92rem; }
.foot-in { max-width: 84rem; margin: 0 auto; padding: 2rem 1rem 2.5rem; display: grid; gap: 1.25rem; }
@media (min-width: 60rem) { .foot-in { grid-template-columns: 1fr 1.2fr; padding: 2.5rem 1.5rem; } .foot-small { grid-column: 1 / -1; } }
.foot-brand { font-size: 1.1rem; color: var(--ink); margin: 0 0 .3rem; }
.foot nav { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; align-content: start; }
.foot a { color: var(--ink-soft); }
.foot-small p { margin: 0 0 .4rem; }

@media print { .top, .side-left, .side-right, .slot, .sponsor, .affiliate, .foot { display: none; } .layout { display: block; } .scale { box-shadow: none; } }
.tool > .out:last-child { margin-bottom: .9rem; }

/* ---------- Christmas planner ---------- */
.sides { display: grid; gap: .5rem; margin: 0 0 1rem; }
.side-row { display: grid; grid-template-columns: 1fr 5.5rem 5rem; gap: .5rem; align-items: center; }
.side-row .check { margin: 0; font-weight: 400; }
.side-row input.s-min, .side-row input.s-temp { padding: .45rem .55rem; }
.s-hob { font-size: .9rem; color: var(--ink-soft); text-align: center; }
.timetable { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; box-shadow: var(--shadow); margin: 0 0 1.25rem; }
.tt-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.tt-head h2 { margin: 0; }
.tt { list-style: none; margin: .75rem 0 0; padding: 0; }
.tt li { display: grid; grid-template-columns: 4rem 1fr; gap: .75rem; padding: .55rem 0; border-bottom: 1px solid var(--line); }
.tt li:last-child { border-bottom: 0; }
.tt time { font-weight: 700; color: var(--rim); }
.tt .tt-day { display: block; font-weight: 700; color: var(--ink-soft); font-size: .85rem; padding-top: 1rem; border-bottom: 0; }
.tt .tt-day:first-child { padding-top: 0; }
@media print {
  body { background: #fff; color: #000; }
  main > *:not(.timetable):not(h1) { display: none !important; }
  .timetable { box-shadow: none; border: 0; padding: 0; }
  #x-print { display: none; }
  .tt time { color: #000; }
}