/* Harvard Reference Generator. Quiet academic look: warm paper, ink, one deep-green accent. */
:root {
  --color-paper: #f7f5ef;
  --color-surface: #ffffff;
  --color-ink: #1c1d1a;
  --color-muted: #5f6158;
  --color-rule: #dcd8cc;
  --color-accent: #1f5c46;
  --color-accent-ink: #ffffff;
  --color-accent-soft: #e4eee8;
  --color-danger: #a33a2c;
  --color-focus: #2f7d61;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-ref: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, serif;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { overflow-x: clip; }
body {
  margin: 0;
  font: 16px/1.55 var(--font-body);
  color: var(--color-ink);
  background: var(--color-paper);
}
main { max-width: 1120px; margin: 0 auto; padding: 0 20px 48px; }

footer.site { max-width: 1120px; margin: 0 auto; padding: 18px 20px; }
footer.site { color: var(--color-muted); font-size: 14px; border-top: 1px solid var(--color-rule); }
footer.site a { color: inherit; }

h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.1; letter-spacing: -0.02em; margin: 40px 0 10px; overflow-wrap: anywhere; }
h2 { font-size: 22px; margin: 0 0 12px; }
h3 { font-size: 17px; margin: 22px 0 4px; }
.lede { color: var(--color-muted); max-width: 62ch; margin: 0 0 24px; }
.hint { color: var(--color-muted); font-size: 14px; margin: 6px 0 0; }
.hint.error, #lookup-status.error { color: var(--color-danger); }

.tool { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.panel { background: var(--color-surface); border: 1px solid var(--color-rule); border-radius: var(--radius); padding: 20px; }
.list { position: sticky; top: 16px; }

fieldset { border: 0; padding: 0; margin: 0 0 18px; min-width: 0; }
legend, label, .label { font-size: 14px; font-weight: 600; }
legend { margin-bottom: 8px; padding: 0; }

.types { display: flex; flex-wrap: wrap; gap: 8px; }
.types legend { width: 100%; }
.types label, .choice label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border: 1px solid var(--color-rule); border-radius: 999px;
  font-weight: 500; cursor: pointer; white-space: nowrap; background: var(--color-surface);
}
.types input, .choice input { accent-color: var(--color-accent); margin: 0; }
.types label:has(input:checked), .choice label:has(input:checked) {
  border-color: var(--color-accent); background: var(--color-accent-soft);
}
.types label:has(input:focus-visible), .choice label:has(input:focus-visible) { outline: 2px solid var(--color-focus); outline-offset: 2px; }
.choice { display: flex; gap: 8px; margin-bottom: 10px; }

input {
  width: 100%; font: inherit; color: inherit; padding: 9px 11px;
  border: 1px solid var(--color-rule); border-radius: 8px; background: var(--color-surface);
}
input:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 1px; border-color: transparent; }
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
[hidden] { display: none !important; }

.lookup { margin-bottom: 18px; padding: 14px; border-radius: 8px; background: var(--color-paper); }
.lookup .row { display: flex; gap: 8px; margin-top: 4px; }
.lookup .row input { flex: 1; min-width: 0; }

.author { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto; gap: 10px; align-items: end; margin-bottom: 10px; }
.author .remove { padding-bottom: 10px; }
.n { color: var(--color-muted); font-weight: 500; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 18px; }
.grid .wide { grid-column: 1 / -1; }

.preview { border-top: 1px solid var(--color-rule); padding-top: 14px; margin-bottom: 16px; }
.preview .label { margin: 0 0 4px; color: var(--color-muted); font-weight: 600; }
.ref { font-family: var(--font-ref); font-size: 17px; margin: 0 0 12px; overflow-wrap: anywhere; }
.cite { font-family: var(--font-ref); margin: 0; overflow-wrap: anywhere; }

button {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 8px; padding: 9px 16px;
  border: 1px solid var(--color-accent); background: var(--color-accent); color: var(--color-accent-ink);
  white-space: nowrap;
}
button:hover { filter: brightness(1.08); }
button:active { transform: translateY(1px); }
button:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }
button:disabled { opacity: 0.55; cursor: progress; }
button.secondary { background: var(--color-surface); color: var(--color-accent); }
button.link { background: none; border: 0; padding: 4px 2px; color: var(--color-accent); font-weight: 600; }
button.link:hover { text-decoration: underline; filter: none; }
button.danger { color: var(--color-danger); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.list-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.list-head h2 { margin: 0; }
.list-actions { display: flex; gap: 8px; align-items: center; }
#list { list-style: none; padding: 0; margin: 0; }
#list li { padding: 14px 0; border-top: 1px solid var(--color-rule); }
#list li .ref { font-size: 16px; margin-bottom: 6px; }
#list li .cite { color: var(--color-muted); font-size: 15px; }
.item-actions { display: flex; gap: 12px; margin-top: 6px; }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--color-ink); color: var(--color-paper); padding: 10px 16px; border-radius: 8px;
  font-size: 15px; margin: 0; z-index: 10; max-width: calc(100vw - 32px);
}

.guide { max-width: 72ch; margin-top: 48px; }
.guide h2 { margin-top: 36px; }
.guide p { margin: 0 0 12px; }
.examples dt { font-weight: 650; margin-top: 14px; }
.examples dd { margin: 4px 0 0; font-family: var(--font-ref); overflow-wrap: anywhere; }

@media (max-width: 860px) {
  .tool { grid-template-columns: minmax(0, 1fr); }
  .list { position: static; }
}
@media (max-width: 520px) {
  main { padding: 0 14px 40px; }
  .panel { padding: 16px; }
  .grid { grid-template-columns: minmax(0, 1fr); }
  .author { grid-template-columns: minmax(0, 1fr); }
  .author .remove { justify-self: start; padding-bottom: 0; }
  .lookup .row { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
.badges { display: flex; flex-wrap: wrap; gap: 8px; margin: -12px 0 24px; padding: 0; }
.badges span { font-size: 13px; font-weight: 600; color: var(--color-accent); background: var(--color-accent-soft); border-radius: 999px; padding: 4px 10px; white-space: nowrap; }
.field-hint { color: var(--color-muted); font-size: 13px; line-height: 1.4; }