/* CatalogHop. Calm, ledger-like, system fonts only. */
:root {
  --bg: #f7f6f2;
  --surface: #ffffff;
  --surface-2: #f0efe9;
  --ink: #1c1f1e;
  --ink-2: #4a514e;
  --ink-3: #6b726f;
  --line: #dcdad2;
  --line-strong: #b9b6ab;
  --accent: #1d5c47;
  --accent-ink: #ffffff;
  --accent-soft: #e3eee9;
  --warn-bg: #fbf3e2;
  --warn-line: #e2c88f;
  --warn-ink: #5c4512;
  --err-bg: #fbeceb;
  --err-line: #e0aaa5;
  --err-ink: #7a1f17;
  --neg: #9b2c22;
  --focus: #2a6fdb;
  --radius: 6px;
  --serif: "Iowan Old Style", "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141716;
    --surface: #1b1f1e;
    --surface-2: #222826;
    --ink: #e9ece9;
    --ink-2: #b9c0bc;
    --ink-3: #939b97;
    --line: #2f3633;
    --line-strong: #47504c;
    --accent: #6fc3a2;
    --accent-ink: #0d1f18;
    --accent-soft: #1e3029;
    --warn-bg: #2b2414;
    --warn-line: #6b5627;
    --warn-ink: #f0dcae;
    --err-bg: #2e1a18;
    --err-line: #7a3a33;
    --err-ink: #f5c7c1;
    --neg: #f0a399;
    --focus: #7fb0ff;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #141716;
  --surface: #1b1f1e;
  --surface-2: #222826;
  --ink: #e9ece9;
  --ink-2: #b9c0bc;
  --ink-3: #939b97;
  --line: #2f3633;
  --line-strong: #47504c;
  --accent: #6fc3a2;
  --accent-ink: #0d1f18;
  --accent-soft: #1e3029;
  --warn-bg: #2b2414;
  --warn-line: #6b5627;
  --warn-ink: #f0dcae;
  --err-bg: #2e1a18;
  --err-line: #7a3a33;
  --err-ink: #f5c7c1;
  --neg: #f0a399;
  --focus: #7fb0ff;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; }
a { color: var(--accent); text-underline-offset: 2px; }
/* Long bare URLs (the Sources lists) must wrap on phones instead of widening the page. */
.sources li, .sources a { overflow-wrap: anywhere; word-break: break-word; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 3px; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; letter-spacing: -0.01em; font-size: 1.08rem; }
.brand svg { width: 26px; height: 26px; flex: none; }
.nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; font-size: 0.94rem; }
.nav a { color: var(--ink-2); text-decoration: none; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; }
.theme-btn {
  font: inherit; font-size: 0.85rem; color: var(--ink-2); background: transparent;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 10px; cursor: pointer;
}
.theme-btn:hover { border-color: var(--line-strong); color: var(--ink); }

/* Type */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.01em; line-height: 1.2; color: var(--ink); }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.2vw, 2.45rem); margin: 0 0 12px; }
h2 { font-size: 1.45rem; margin: 44px 0 12px; }
h3 { font-size: 1.12rem; margin: 26px 0 8px; }
.h-small { font-family: var(--sans); font-size: 0.95rem; font-weight: 650; margin: 0 0 6px; }
p { margin: 0 0 14px; }
.lede { font-size: 1.1rem; color: var(--ink-2); max-width: 46em; }
.muted { color: var(--ink-3); }
code, kbd, pre { font-family: var(--mono); font-size: 0.88em; }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
ol, ul { padding-left: 1.3em; margin: 0 0 14px; }
li { margin: 4px 0; }

/* Breadcrumbs */
.crumbs { font-size: 0.88rem; color: var(--ink-3); margin: 22px 0 14px; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs li { margin: 0; }
.crumbs li + li::before { content: "/"; margin-right: 6px; color: var(--line-strong); }
.crumbs a { color: var(--ink-3); }

main { padding-bottom: 56px; }
.hero { padding: 26px 0 10px; }

/* Answer box: short citable summary */
.answer {
  border-left: 3px solid var(--accent); background: var(--surface); padding: 14px 18px; margin: 18px 0 8px;
  border-radius: 0 var(--radius) var(--radius) 0; max-width: 52em;
}
.answer p:last-child { margin: 0; }

/* Tool */
.tool {
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  padding: 22px; margin: 22px 0 10px; box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.tool-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.tool-head h2 { margin: 0; font-size: 1.2rem; }
.tool-pair { color: var(--ink-3); font-size: 0.92rem; }
.drop-row { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 18px; align-items: stretch; }
.drop {
  position: relative; border: 2px dashed var(--line-strong); border-radius: 8px; background: var(--surface-2);
  display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center;
  padding: 34px 18px; min-height: 180px; transition: border-color .15s, background .15s;
}
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop:focus-within { outline: 3px solid var(--focus); outline-offset: 2px; }
.drop input[type="file"] { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.drop input[type="file"]:disabled { cursor: wait; }
.drop .big { font-size: 1.08rem; font-weight: 600; margin: 0 0 4px; }
.drop .pick {
  display: inline-block; margin-top: 12px; background: var(--accent); color: var(--accent-ink);
  padding: 9px 18px; border-radius: var(--radius); font-weight: 600; pointer-events: none;
}
.drop .hint { color: var(--ink-3); font-size: 0.9rem; margin: 10px 0 0; max-width: 34em; }
.local-note {
  border: 1px solid var(--line); border-radius: 8px; padding: 16px; font-size: 0.93rem; color: var(--ink-2);
  display: flex; flex-direction: column; gap: 8px; margin: 0;
}
.local-note strong { color: var(--ink); display: flex; align-items: center; gap: 8px; font-size: 0.98rem; }
.local-note svg { width: 18px; height: 18px; flex: none; color: var(--accent); }
.local-note p { margin: 0; }

.work-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.work-head h3:focus { outline: none; }
.work-head h3 { margin: 0 0 2px; font-family: var(--sans); font-size: 1rem; font-weight: 650; }
.file-info { font-family: var(--mono); font-size: 0.86rem; color: var(--ink-2); word-break: break-all; }
.detect { font-size: 0.92rem; color: var(--ink-2); margin: 8px 0 14px; }
.controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin: 6px 0 4px; }
.options { display: contents; }
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field label { font-size: 0.86rem; font-weight: 600; color: var(--ink-2); }
.field .help { font-size: 0.82rem; color: var(--ink-3); margin: 0; }
select, input[type="text"], input[type="email"] {
  font: inherit; font-size: 0.95rem; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 8px 10px; min-height: 40px; width: 100%;
}
select:hover, input:hover { border-color: var(--ink-3); }
.btn {
  font: inherit; font-weight: 600; font-size: 0.95rem; border-radius: var(--radius); padding: 9px 16px; cursor: pointer;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); min-height: 42px;
}
.btn:hover { filter: brightness(1.07); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-quiet { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-quiet:hover { border-color: var(--ink-3); filter: none; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin: 16px 0 4px; }
.status { font-size: 0.88rem; color: var(--ink-3); min-height: 1.4em; margin: 10px 0 0; }
.tool.busy .status::after { content: ""; display: inline-block; width: 10px; height: 10px; margin-left: 8px; border: 2px solid var(--line-strong); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -1px; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .tool.busy .status::after { animation: none; } }

.error { background: var(--err-bg); border: 1px solid var(--err-line); color: var(--err-ink); border-radius: var(--radius); padding: 12px 14px; margin: 14px 0 0; }
.result { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 16px; }
.summary { font-weight: 600; margin: 0 0 6px; }
.meta-list { list-style: none; padding: 0; margin: 0 0 12px; font-size: 0.9rem; color: var(--ink-2); }
.meta-list li { margin: 2px 0; }
.meta-list .ok { color: var(--accent); font-weight: 600; }
.meta-list .bad { color: var(--neg); font-weight: 600; }
.parts { margin: 12px 0 0; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.parts p { margin: 0 0 8px; font-size: 0.92rem; }
.parts .row { display: flex; flex-wrap: wrap; gap: 8px; }
.parts[hidden] { display: none; }
.warnings { background: var(--warn-bg); border: 1px solid var(--warn-line); color: var(--warn-ink); border-radius: var(--radius); padding: 12px 14px; margin: 0 0 14px; font-size: 0.92rem; }
.warnings:empty { display: none; }
.warnings ul { margin: 0; }
.warnings .h-small { color: var(--warn-ink); }

.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); max-height: 420px; overflow-y: auto; background: var(--surface); }
table.preview, table.sample { border-collapse: collapse; width: 100%; font-size: 0.86rem; }
table.preview caption, table.sample caption { text-align: left; padding: 8px 10px; font-size: 0.82rem; color: var(--ink-3); caption-side: top; }
table.preview th, table.preview td, table.sample th, table.sample td { padding: 6px 10px; border-top: 1px solid var(--line); text-align: left; white-space: nowrap; vertical-align: top; }
table.preview th, table.sample th { background: var(--surface-2); font-weight: 600; position: sticky; top: 0; font-family: var(--mono); font-size: 0.8rem; color: var(--ink-2); }
table.preview td, table.sample td { font-family: var(--mono); font-size: 0.82rem; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
td.neg { color: var(--neg); }
details.raw { margin-top: 10px; }
details.raw summary { cursor: pointer; font-size: 0.9rem; color: var(--ink-2); }
pre { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; overflow-x: auto; font-size: 0.8rem; line-height: 1.5; margin: 8px 0 0; white-space: pre; }

.tool noscript p { margin: 10px 0 0; }

/* Ambiguity question, answers, time zone */
.ask { margin: 16px 0 0; padding: 14px 16px; border: 1px solid var(--accent); border-radius: 8px; background: var(--accent-soft); }
.ask h3 { font-size: 1.02rem; margin: 0 0 4px; }
.ask h3:focus { outline: none; }
.ask p { margin: 0 0 10px; font-size: 0.92rem; color: var(--ink-2); }
.ask .row { display: flex; flex-wrap: wrap; gap: 8px; }
.ask .btn-quiet { background: var(--surface); }
.ask[hidden], .answers[hidden], .tz[hidden] { display: none; }
.answers { margin: 12px 0 0; font-size: 0.9rem; color: var(--ink-2); }
.answers p { margin: 0 0 4px; }
.linkish { font: inherit; background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; cursor: pointer; }
.tz { margin: 0 0 12px; font-size: 0.9rem; color: var(--ink-2); }
.tz p { margin: 0; }
.tz-field { max-width: 420px; margin-bottom: 8px; }
.field-check { grid-column: 1 / -1; }
.field-check label { display: flex; gap: 8px; align-items: flex-start; font-weight: 600; color: var(--ink-2); }
.field-check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--accent); }

/* Assumed date order / decimal separator */
.assume { margin: 0 0 12px; padding: 12px 14px; border: 2px solid var(--warn-line); border-radius: 8px; background: var(--warn-bg); color: var(--warn-ink); }
.assume h3 { margin: 0 0 6px; color: var(--warn-ink); }
.assume p { margin: 0 0 6px; font-size: 0.95rem; font-weight: 600; }
.assume p:last-child { margin-bottom: 0; }
.btn-small { min-height: 32px; padding: 4px 10px; font-size: 0.85rem; margin-left: 6px; }
.assume-short { flex-basis: 100%; margin: 0; font-size: 0.88rem; color: var(--warn-ink); font-weight: 600; }
.assume[hidden], .assume-short[hidden] { display: none; }

/* Notify */
.notify { margin: 14px 0 0; padding: 16px 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.notify p { margin: 0 0 8px; font-size: 0.95rem; }
.notify .row { display: flex; gap: 8px; flex-wrap: wrap; }
.notify input[type="email"] { flex: 1 1 240px; width: auto; }
.notify .fine { font-size: 0.82rem; color: var(--ink-3); margin: 8px 0 0; }
.notify-msg { font-size: 0.9rem; margin: 8px 0 0; min-height: 1.2em; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Contact */
.contact { display: flex; flex-direction: column; gap: 16px; margin: 20px 0; max-width: 640px; }
.contact textarea { font: inherit; font-size: 0.95rem; color: var(--ink); background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 10px; width: 100%; resize: vertical; }
.contact .actions { margin: 0; }
.contact-import[hidden] { display: none; }

/* Content */
.content { max-width: 760px; }
.steps li { margin: 6px 0; }
.problems li { margin: 8px 0; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.sample-block h3 { margin-top: 0; font-family: var(--sans); font-size: 0.95rem; font-weight: 650; }
.sample-wrap { margin: 10px 0 20px; }
.sample-wrap .table-scroll { max-height: none; }
.faq dt { font-weight: 650; margin: 18px 0 4px; }
.faq dd { margin: 0; color: var(--ink-2); }
.todo { background: var(--warn-bg); border: 1px dashed var(--warn-line); color: var(--warn-ink); padding: 8px 12px; border-radius: var(--radius); font-size: 0.9rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 12px 0; padding: 0; list-style: none; }
.cards li { margin: 0; }
.card {
  display: block; height: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; background: var(--surface);
  color: var(--ink); text-decoration: none;
}
.card:hover { border-color: var(--accent); }
.card strong { display: block; font-weight: 650; margin-bottom: 2px; }
.card span { font-size: 0.88rem; color: var(--ink-3); }
.link-list { columns: 2; column-gap: 28px; padding-left: 1.1em; }
.link-list li { break-inside: avoid; }

.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 26px 0 0; }
.fact { border-top: 2px solid var(--accent); padding-top: 10px; }
.fact strong { display: block; font-size: 0.98rem; margin-bottom: 2px; }
.fact p { font-size: 0.92rem; color: var(--ink-2); margin: 0; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--surface); color: var(--ink-3); font-size: 0.86rem; padding: 26px 0 34px; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 12px; }
.site-footer a { color: var(--ink-2); }
.site-footer p { margin: 0 0 8px; max-width: 62em; }

@media (max-width: 760px) {
  .drop-row { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; }
  .link-list { columns: 1; }
  .tool { padding: 16px; margin-left: -4px; margin-right: -4px; }
  .drop { min-height: 150px; padding: 24px 14px; }
  h2 { margin-top: 34px; }
  .wrap { padding: 0 16px; }
  .site-header .wrap { gap: 4px 12px; padding-top: 8px; padding-bottom: 8px; min-height: 0; }
  .nav { gap: 6px 14px; font-size: 0.9rem; width: 100%; }
  .theme-btn { margin-left: auto; padding: 2px 8px; font-size: 0.8rem; }
  .crumbs { margin-top: 14px; }
  .hero { padding-top: 14px; }
}
@media print {
  .tool, .notify, .site-header nav, .theme-btn { display: none; }
}

/* Anything hidden with the hidden attribute stays hidden, whatever its display rule. */
[hidden] { display: none !important; }
.note { background: var(--warn-bg); border: 1px solid var(--warn-line); color: var(--warn-ink); border-radius: var(--radius); padding: 10px 14px; }