/* timezone-diff.css – /tools/timezone-diff.html. Loaded after main.css.
   All classes use the "zd-" prefix, colours are scoped to .zonediff-page.
   Minimum font size on this page is 15px. */

.zonediff-page {
  --zd-surface: #0c1220;
  --zd-surface2: #111a2e;
  --zd-border: #1e2d4a;
  --zd-accent: #00e5ff;
  --zd-text: #e8edf5;
  --zd-text2: #a3b1c9;
  --zd-gold: #ffd166;
  --zd-green: #06ffa5;
  --zd-red: #ff4060;
  --zd-mono: 'JetBrains Mono', monospace;
  font-size: 15px;
}

.zonediff-page [hidden] { display: none !important; }
.zonediff-page button, .zonediff-page input, .zonediff-page select { font-family: inherit; font-size: 15px; }
.zonediff-page button:focus-visible, .zonediff-page input:focus-visible, .zonediff-page a:focus-visible { outline: 2px solid var(--zd-accent); outline-offset: 2px; }

.zonediff-page .zd-badge {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 14px; margin-bottom: 16px;
  border: 1px solid rgba(0, 229, 255, .35); border-radius: 100px; background: rgba(0, 229, 255, .06);
  color: var(--zd-accent); font-family: var(--zd-mono); font-size: 15px; letter-spacing: .5px;
}

.zonediff-page .zd-card { margin-bottom: 20px; padding: 20px; border: 1px solid var(--zd-border); border-radius: 20px; background: var(--zd-surface); min-width: 0; }
.zonediff-page .zd-card h2 { margin-bottom: 14px; font-size: 20px; font-weight: 800; letter-spacing: -.5px; color: var(--zd-text); }
.zonediff-page .zd-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.zonediff-page .zd-two .zd-card { margin-bottom: 20px; }

/* Controls */
.zonediff-page .zd-row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px; margin-bottom: 10px; }
.zonediff-page .zd-field { display: flex; flex-direction: column; gap: 6px; flex: 1 1 170px; min-width: 0; }
.zonediff-page .zd-grow { flex: 3 1 240px; }
.zonediff-page .zd-field label { color: var(--zd-text2); font-weight: 600; }
.zonediff-page input[type="text"], .zonediff-page input[type="date"], .zonediff-page input[type="time"] {
  width: 100%; min-width: 0; padding: 10px 12px; border: 1px solid var(--zd-border); border-radius: 8px;
  background: var(--zd-surface2); color: var(--zd-text); color-scheme: dark;
}
.zonediff-page .zd-swap {
  width: 46px; height: 46px; border: 1px solid var(--zd-border); border-radius: 50%; background: var(--zd-surface2);
  color: var(--zd-accent); font-size: 20px; cursor: pointer; transition: border-color .2s, transform .2s;
}
.zonediff-page .zd-swap:hover { border-color: var(--zd-accent); transform: rotate(180deg); }
.zonediff-page .zd-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 16px;
  border: 1px solid var(--zd-border); border-radius: 10px; background: transparent; color: var(--zd-text2);
  font-weight: 700; cursor: pointer; transition: border-color .2s, color .2s;
}
.zonediff-page .zd-btn:hover { border-color: var(--zd-accent); color: var(--zd-accent); }
.zonediff-page .zd-live.on { border-color: var(--zd-green); color: var(--zd-green); background: rgba(6, 255, 165, .08); }
.zonediff-page .zd-err { margin: 10px 0; padding: 10px 14px; border: 1px solid rgba(255, 64, 96, .5); border-radius: 10px; background: rgba(255, 64, 96, .1); color: #ff8095; }
.zonediff-page .zd-notice { margin: 10px 0; padding: 10px 14px; border: 1px solid rgba(255, 209, 102, .45); border-radius: 10px; background: rgba(255, 209, 102, .08); color: var(--zd-gold); line-height: 1.6; }
.zonediff-page .zd-pairs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.zonediff-page .zd-chip {
  padding: 7px 14px; border: 1px solid var(--zd-border); border-radius: 100px; background: transparent;
  color: var(--zd-text2); font-weight: 600; cursor: pointer; transition: border-color .2s, color .2s;
}
.zonediff-page .zd-chip:hover { border-color: var(--zd-accent); color: var(--zd-accent); }

/* Result */
.zonediff-page .zd-result { text-align: center; border-color: rgba(0, 229, 255, .35); }
.zonediff-page .zd-badge-big {
  display: inline-block; margin-bottom: 10px; padding: 8px 22px; border-radius: 100px; background: rgba(0, 229, 255, .1);
  border: 1px solid rgba(0, 229, 255, .4); color: var(--zd-accent); font-family: var(--zd-mono); font-size: 28px; font-weight: 700;
}
.zonediff-page .zd-result .zd-head { margin-bottom: 8px; font-size: clamp(20px, 3.6vw, 28px); font-weight: 800; letter-spacing: -.5px; line-height: 1.3; }
.zonediff-page .zd-sub { margin-bottom: 18px; color: var(--zd-text2); line-height: 1.6; }
.zonediff-page .zd-times { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; text-align: center; }
.zonediff-page .zd-t { padding: 16px 12px; border: 1px solid var(--zd-border); border-radius: 14px; background: var(--zd-surface2); min-width: 0; }
.zonediff-page .zd-lab { color: var(--zd-text2); font-weight: 700; overflow-wrap: anywhere; }
.zonediff-page .zd-clock { margin: 4px 0; font-family: var(--zd-mono); font-size: clamp(26px, 5.5vw, 42px); font-weight: 700; color: var(--zd-text); font-variant-numeric: tabular-nums; }
.zonediff-page .zd-date { color: var(--zd-text2); overflow-wrap: anywhere; }
.zonediff-page .zd-hint { margin-top: 12px; color: var(--zd-text2); line-height: 1.7; }

/* City cards */
.zonediff-page .zd-now { margin-bottom: 12px; font-family: var(--zd-mono); font-size: 28px; font-weight: 700; color: var(--zd-accent); font-variant-numeric: tabular-nums; }
.zonediff-page .zd-now small { margin-left: 6px; font-family: inherit; font-size: 15px; font-weight: 400; color: var(--zd-text2); }
.zonediff-page .zd-dl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px 14px; margin-bottom: 14px; }
.zonediff-page .zd-dl dt { color: var(--zd-text2); }
.zonediff-page .zd-dl dd { color: var(--zd-text); text-align: right; overflow-wrap: anywhere; }
.zonediff-page .zd-link { color: var(--zd-accent); font-weight: 700; text-decoration: none; }
.zonediff-page .zd-link:hover { text-decoration: underline; }

/* Tables */
.zonediff-page .zd-table-wrap { max-height: 480px; overflow: auto; border: 1px solid var(--zd-border); border-radius: 12px; }
.zonediff-page .zd-table { width: 100%; border-collapse: collapse; }
.zonediff-page .zd-table th { position: sticky; top: 0; padding: 10px 12px; background: var(--zd-surface2); color: var(--zd-text2); font-weight: 700; text-align: left; border-bottom: 1px solid var(--zd-border); }
.zonediff-page .zd-table td { padding: 10px 12px; border-bottom: 1px solid rgba(30, 45, 74, .6); color: var(--zd-text); }
.zonediff-page .zd-table td.m { font-family: var(--zd-mono); white-space: nowrap; font-variant-numeric: tabular-nums; }
.zonediff-page .zd-table tr.chg td { background: rgba(255, 209, 102, .1); color: var(--zd-gold); }
.zonediff-page .zd-hours tr.s2 td { background: rgba(6, 255, 165, .1); }
.zonediff-page .zd-hours tr.s1 td { background: rgba(255, 209, 102, .07); }
.zonediff-page .zd-hours tr.s0 td { color: #b78a96; }
.zonediff-page .zd-hours tr.now td { box-shadow: inset 0 2px 0 var(--zd-accent), inset 0 -2px 0 var(--zd-accent); font-weight: 700; }
.zonediff-page .zd-overlap { margin-bottom: 10px; color: var(--zd-text); line-height: 1.7; }
.zonediff-page .zd-legend { margin-bottom: 12px; color: var(--zd-text2); line-height: 2; }
.zonediff-page .zd-sw { display: inline-block; width: 16px; height: 16px; margin: 0 6px 0 8px; vertical-align: middle; border-radius: 4px; }
.zonediff-page .zd-sw.s2 { background: rgba(6, 255, 165, .35); }
.zonediff-page .zd-sw.s1 { background: rgba(255, 209, 102, .3); }
.zonediff-page .zd-sw.s0 { background: rgba(255, 64, 96, .3); }

/* FAQ */
.zonediff-page .zd-heading { margin: 36px 0 24px; text-align: center; }
.zonediff-page .zd-heading h2 { margin-bottom: 8px; font-size: clamp(24px, 3.5vw, 30px); font-weight: 800; letter-spacing: -1px; }
.zonediff-page .zd-heading p { color: var(--zd-text2); }
.zonediff-page .zd-faq { margin-bottom: 48px; }
.zonediff-page .zd-faq-item { margin-bottom: 10px; border: 1px solid var(--zd-border); border-radius: 14px; background: var(--zd-surface); }
.zonediff-page .zd-faq-item[open] { border-color: var(--zd-accent); }
.zonediff-page .zd-faq-item summary { padding: 16px 20px; font-weight: 700; color: var(--zd-text); cursor: pointer; list-style: none; }
.zonediff-page .zd-faq-item summary::-webkit-details-marker { display: none; }
.zonediff-page .zd-faq-item summary::after { content: '+'; float: right; color: var(--zd-accent); font-family: var(--zd-mono); }
.zonediff-page .zd-faq-item[open] summary::after { content: '\2013'; }
.zonediff-page .zd-faq-item p { padding: 0 20px 18px; color: var(--zd-text2); line-height: 1.7; }

.zd-toast {
  position: fixed; right: 24px; bottom: 24px; z-index: 9990; max-width: min(360px, calc(100vw - 48px));
  padding: 14px 18px; border: 1px solid rgba(0, 229, 255, .45); border-radius: 12px; background: #0c1220;
  color: #e8edf5; font-size: 15px; box-shadow: 0 8px 30px rgba(0, 0, 0, .5);
  transform: translateY(150%); opacity: 0; transition: transform .35s, opacity .35s; pointer-events: none;
}
.zd-toast.show { transform: translateY(0); opacity: 1; }

@media (max-width: 800px) { .zonediff-page .zd-two { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 560px) {
  .zonediff-page .zd-card { padding: 16px; }
  .zonediff-page .zd-times { grid-template-columns: minmax(0, 1fr); }
  .zonediff-page .zd-swap { margin: 0 auto; transform: rotate(90deg); }
  .zonediff-page .zd-swap:hover { transform: rotate(270deg); }
  .zonediff-page .zd-btn { flex: 1 1 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .zonediff-page *, .zd-toast { transition: none !important; animation: none !important; }
}