:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #d9dde3;
  --text: #1b1f24;
  --muted: #5b6470;
  --accent: #0f6cbd;
  --accent-text: #ffffff;
  --warn-bg: #fff4ce;
  --warn-text: #5c4400;
  --ok: #107c10;
  --danger: #c50f1f;
  --code-bg: #0f172a;
  --code-text: #e2e8f0;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06), 0 2px 8px rgba(0, 0, 0, .04);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #1a1e24;
    --surface-2: #232830;
    --border: #333a44;
    --text: #e6e9ed;
    --muted: #9aa4b1;
    --accent: #479ef5;
    --accent-text: #0b1220;
    --warn-bg: #3d3212;
    --warn-text: #f5d97a;
    --ok: #54b054;
    --danger: #f1707b;
    --code-bg: #0b0f15;
    --code-text: #e2e8f0;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
header.top h1 { font-size: 20px; margin: 0; }
header.top p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.account { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }

main {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 20px;
  max-width: 1320px;
  margin: 0 auto;
  padding: 20px 24px 48px;
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; padding: 16px; }
  header.top { padding: 12px 16px; }
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  min-width: 0;
}
.panel + .panel { margin-top: 20px; }
.panel h2 { font-size: 16px; margin: 0 0 12px; }
.panel h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  margin: 20px 0 8px;
}
.panel h3:first-of-type { margin-top: 4px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px 14px;
}

label.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.field span.hint { font-size: 12px; }

input[type=text], input[type=date], input[type=number], select {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 9px;
  width: 100%;
  min-width: 0;
}
input:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.inline { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.inline > * { flex: 1 1 120px; }

button {
  font: inherit;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 7px 12px;
  cursor: pointer;
  white-space: nowrap;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.link { background: none; border: none; color: var(--accent); padding: 0; }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }

.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

.client {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
}
.client header { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 6px; }
.client header strong { font-size: 14px; }
.client code {
  display: block;
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: 6px;
  padding: 10px 12px;
  font: 13px/1.5 ui-monospace, "Cascadia Mono", Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 2.6em;
}
.client code.empty { color: #8b95a3; font-style: italic; }
.client ul.warn {
  margin: 8px 0 0;
  padding: 8px 10px 8px 26px;
  background: var(--warn-bg);
  color: var(--warn-text);
  border-radius: 6px;
  font-size: 12.5px;
}
.client .where { font-size: 12px; color: var(--muted); margin-top: 6px; }

.saved-list { list-style: none; margin: 0; padding: 0; }
.saved-list li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  padding: 8px 0;
  border-top: 1px solid var(--border);
}
.saved-list li:first-child { border-top: none; }
.saved-list .name { font-weight: 600; overflow-wrap: anywhere; }
.saved-list .meta { font-size: 12px; color: var(--muted); }
.saved-list .btns { display: flex; gap: 6px; flex-shrink: 0; }

.muted { color: var(--muted); font-size: 13px; }
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
}
.toast.show { opacity: 1; }

details.help summary { cursor: pointer; font-weight: 600; }
details.help { font-size: 13.5px; }
details.help table { border-collapse: collapse; width: 100%; font-size: 12.5px; margin-top: 8px; display: block; overflow-x: auto; }
details.help th, details.help td { border: 1px solid var(--border); padding: 4px 6px; text-align: left; }

footer { text-align: center; color: var(--muted); font-size: 12px; padding: 0 16px 32px; }
.hidden { display: none !important; }
.inline > .fixed { flex: 0 0 auto; }
label.field.check { justify-content: flex-end; }
label.field.check > span:first-child { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 14px; }
label.field.check input { width: 18px; height: 18px; margin: 0; }

/* ---------- library ---------- */
.panel.wide { grid-column: 1 / -1; }
.lib-bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.lib-bar select { width: auto; }
.tabs { display: flex; gap: 4px; background: var(--surface-2); padding: 3px; border-radius: 8px; }
.tab { border: none; background: none; padding: 6px 14px; border-radius: 6px; }
.tab.on { background: var(--surface); box-shadow: var(--shadow); font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip { border-radius: 999px; padding: 4px 12px; font-size: 13px; }
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.chip.static { cursor: default; font-size: 11.5px; padding: 2px 8px; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.lib-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 12px;
}
@media (max-width: 420px) { .lib-list { grid-template-columns: 1fr; } }
.lib-card { display: flex; gap: 10px; border: 1px solid var(--border); border-radius: 8px; padding: 12px; min-width: 0; }
.lib-body { display: flex; flex-direction: column; gap: 6px; min-width: 0; flex: 1; }
.lib-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.explain { margin: 0; font-size: 13.5px; color: var(--muted); }
.preview {
  display: block; background: var(--surface-2); border-radius: 6px; padding: 6px 8px;
  font: 12px/1.45 ui-monospace, "Cascadia Mono", Consolas, monospace; overflow-wrap: anywhere;
}
.lib-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: auto; padding-top: 4px; }
.votes { display: flex; flex-direction: column; align-items: center; gap: 2px; flex-shrink: 0; }
.vote { padding: 0 6px; font-size: 12px; line-height: 1.6; background: none; }
.vote.on { color: var(--accent); border-color: var(--accent); }
.score { font-weight: 600; font-size: 14px; }
.descs { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.descs li { display: flex; gap: 8px; align-items: center; font-size: 13px; }
.descs .votes { flex-direction: row; }
.desc-text { flex: 1; font-style: italic; overflow-wrap: anywhere; }
.desc-form { display: flex; flex-direction: column; gap: 4px; }
button.small { font-size: 13px; }
.explain-box { background: var(--surface-2); border-radius: 8px; padding: 10px 12px; font-size: 14px; margin: 0 0 12px; }
.turnstile:empty { display: none; }
.turnstile { margin-top: 10px; }
footer p { margin: 6px 0; }
footer a { color: var(--accent); }

/* ---------- find similar ---------- */
.drop-zone {
  display: flex; flex-direction: column; gap: 4px; align-items: flex-start;
  border: 2px dashed var(--border); border-radius: 10px; padding: 14px 16px; margin-bottom: 16px;
  cursor: pointer; font-size: 14px; color: var(--muted);
}
.drop-zone strong { color: var(--text); font-size: 15px; }
.drop-zone:hover, .drop-zone:focus-visible { border-color: var(--accent); outline: none; }
.drop-zone.busy { opacity: .6; cursor: progress; }
.drop-overlay {
  position: fixed; inset: 0; z-index: 50; display: grid; place-items: center;
  background: color-mix(in srgb, var(--accent) 18%, transparent); backdrop-filter: blur(2px);
  pointer-events: none;
}
.drop-overlay > div {
  background: var(--surface); color: var(--text); border: 2px dashed var(--accent);
  border-radius: 14px; padding: 28px 36px; font-size: 18px; font-weight: 600;
}
.similar { border: 1px solid var(--accent); border-radius: 10px; padding: 14px 16px; margin-bottom: 16px; }
.similar-head { display: flex; justify-content: space-between; align-items: center; }
.similar-summary { margin: 6px 0 10px; font-size: 14px; overflow-wrap: anywhere; }
.suggestions { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.suggestions li { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; }
.suggestions input { width: 18px; height: 18px; margin: 1px 0 0; flex-shrink: 0; }
.suggestions label { overflow-wrap: anywhere; }
.facts ul { margin: 4px 0 0; padding-left: 20px; font-size: 13px; }
.facts p { margin: 12px 0 0; }

/* ---------- chips, toggles, search folders ---------- */
.token-field {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
  border: 1px solid var(--border); border-radius: 6px; padding: 5px 6px; background: var(--surface); cursor: text; min-height: 38px;
}
.token-field:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }
.tokens { display: contents; }
.token {
  display: inline-flex; align-items: center; gap: 2px; background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 1px 4px 1px 10px; font-size: 14px; color: var(--text); max-width: 100%;
}
.token > span { overflow-wrap: anywhere; }
.token-x { border: none; background: none; padding: 0 5px; font-size: 16px; line-height: 1; color: var(--muted); }
.token-x:hover { color: var(--danger); }
.token-input { border: none !important; outline: none !important; padding: 3px !important; flex: 1 1 120px; min-width: 100px; }
.toggles { display: flex; flex-wrap: wrap; gap: 6px; }
.toggle { border-radius: 999px; padding: 4px 12px; font-size: 13.5px; }
.toggle.on { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
label.field.wide { grid-column: 1 / -1; }
.folder-steps { margin-top: 8px; font-size: 13px; }
.folder-steps summary { cursor: pointer; color: var(--accent); }
.folder-steps ol { margin: 6px 0; padding-left: 20px; }
.folder-steps li { margin: 3px 0; }
.folder-steps p { margin: 6px 0; color: var(--muted); }
.lib-card .note { margin: 0; font-size: 12.5px; color: var(--muted); font-style: italic; }
.lib-card .action { margin: 0; font-size: 13px; }
.date-hint { grid-column: 1 / -1; margin: 0; font-size: 13px; color: var(--muted); }

/* Buy Me a Coffee: a styled link, no third-party script. Their brand yellow on near-black text. */
.coffee-button {
  display: inline-flex; align-items: center; gap: 6px;
  background: #ffdd00; color: #1b1b1b; border: 1px solid #e6c700; border-radius: 8px;
  padding: 6px 12px; font-size: 14px; font-weight: 600; text-decoration: none; white-space: nowrap;
}
.coffee-button:hover { background: #ffe433; border-color: #d4b800; }
.coffee-button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (max-width: 480px) { .account { flex-wrap: wrap; } }