:root {
  --bg: #fffaf3;
  --fg: #3f2a1c;
  --muted: #8a6f5a;
  --brand: #c23b2a;
  --accent: #d2663f;
  --holiday: #c62828;
  --workday: #b26a1d;
  --weekend: #a23a2a;
  --grid-border: #edd9c9;
  --cell-hover: #fff1e2;
  --today: #2f8f6b;
  --today-bg: rgba(47,143,107,.18);
  --surface: #fff5ea;
  --divider: #f3e4d6;
}

:root {
  color-scheme: light;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, PingFang SC, Microsoft YaHei, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); border: 0;
}

.app-header, .app-main, .app-footer {
  max-width: 1200px;
  margin: 0 auto;
}
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--grid-border);
  backdrop-filter: saturate(180%) blur(8px);
}
.brand h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 0.5px;
}
.brand .sub {
  font-size: 12px;
  color: var(--muted);
}
.controls {
  display: flex;
  gap: 8px;
  align-items: center;
}
.controls .btn {
  padding: 7px 12px;
  border: 1px solid var(--grid-border);
  background: var(--surface);
  color: var(--fg);
  border-radius: 8px;
  cursor: pointer;
  transition: background .15s ease, box-shadow .15s ease, transform .04s ease;
}
.controls .btn:hover {
  background: var(--cell-hover);
  box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.controls .btn:active {
  transform: translateY(1px);
}
.controls .jumper input {
  width: 80px;
  padding: 4px 6px;
  border: 1px solid var(--grid-border);
  border-radius: 8px;
  color: var(--fg);
  background: transparent;
}
.controls .jumper {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

.app-main {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 16px;
  padding: 16px;
}
@media (max-width: 900px) {
  .app-main { grid-template-columns: 1fr; }
  .sidebar { order: -1; }
}

.calendar-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
}
.calendar-toolbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 0 10px;
}
.calendar-toolbar .toolbar-left { display: flex; justify-content: flex-start; }
.calendar-toolbar .toolbar-center { display: flex; align-items: center; gap: 10px; justify-content: center; }
.calendar-toolbar .toolbar-right { display: flex; justify-content: flex-end; gap: 8px; }
.calendar-toolbar .toolbar-center .pill { font-size: 16px; }
.pill {
  padding: 8px 14px;
  border: 1px solid var(--grid-border);
  background: var(--surface);
  color: var(--fg);
  border-radius: 12px;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}
.pill:disabled {
  opacity: .45;
  cursor: not-allowed;
}
.pill .caret { margin-left: 6px; color: var(--muted); }
.chev {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  border: 1px solid var(--grid-border);
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  position: relative;
  transition: background .15s ease, box-shadow .15s ease, transform .04s ease;
}
.chev::before {
  content: "";
  position: absolute;
  left: 0; top: 0; right: 0; bottom: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 16px 16px;
  opacity: .85;
}
.chev:hover { background: var(--cell-hover); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.chev:active { transform: translateY(1px); }
.chev.chev-left::before {
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24"><path d="M15 6l-6 6 6 6" fill="none" stroke="%2394a3b8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>');
}
.chev.chev-right::before {
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24"><path d="M9 6l6 6-6 6" fill="none" stroke="%2394a3b8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>');
}
.select-wrap {
  position: relative;
  display: inline-flex;
}
.select-wrap .dropdown { padding-right: 28px; }
.select-wrap::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  width: 12px; height: 12px;
  transform: translateY(-50%);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px 12px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 24 24"><path d="M6 9l6 6 6-6" fill="none" stroke="%2394a3b8" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>');
  pointer-events: none;
  opacity: .85;
}
.select-wrap.open::after {
  transform: translateY(-50%) rotate(180deg);
}
.dropdown-panel {
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  min-width: 140px;
  max-height: 280px;
  overflow: auto;
  border: 1px solid var(--grid-border);
  background: var(--bg);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  padding: 6px;
  display: none;
  z-index: 10;
}
.dropdown-panel.open { display: block; }
.dropdown-panel .item {
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
}
.dropdown-panel .item:hover {
  background: var(--cell-hover);
}
.dropdown-panel .item.active {
  background: var(--cell-hover);
  color: var(--brand);
  font-weight: 600;
}
.label-year { font-size: 20px; font-weight: 600; }
.label-month { font-size: 18px; color: var(--muted); font-weight: 600; }

.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  padding: 6px 0;
  color: var(--muted);
  background: rgba(148,163,184,.12);
  border: 1px solid var(--grid-border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
}
.weekday {
  text-align: center;
  font-size: 13px;
  font-weight: 600;
}
.weekday.weekend { color: var(--weekend); }

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: clamp(80px, 10vh, 100px);
  gap: 1px;
  border: 1px solid var(--grid-border);
  border-top: none;
  border-radius: 0 0 10px 10px;
  overflow: hidden;
  background: var(--divider);
}
.cell {
  border: none;
  padding: 10px;
  position: relative;
  outline: none;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: background .12s ease, box-shadow .12s ease;
  word-wrap: break-word;
  -webkit-appearance: none;
  appearance: none;
}
.cell:hover { background: var(--cell-hover); }
.cell:focus { box-shadow: inset 0 0 0 2px var(--accent); }
.cell.selected { box-shadow: inset 0 0 0 2px var(--accent); background: var(--cell-hover); }
.cell .gregorian {
  font-weight: 600;
  font-size: 18px;
  text-align: center;
}
.cell .lunar {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}
.cell .festive {
  margin-top: 2px;
  font-size: 11px;
  color: var(--brand);
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  display: block;
  max-width: 100%;
  line-height: 1.3;
}
.cell .badge {
  position: absolute;
  top: 8px; right: 8px;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: rgba(2,132,199,.08);
  backdrop-filter: saturate(160%);
}
.badge.holiday { color: var(--holiday); background: rgba(239,68,68,.10); }
.badge.workday { color: var(--workday); background: rgba(245,158,11,.12); }
.badge.term { color: var(--brand); border-color: var(--brand); }
.cell.today .gregorian {
  color: var(--fg);
}
.cell .today-mark {
  position: absolute;
  top: 10px;
  left: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--today);
  background: var(--today-bg);
  border-radius: 999px;
  padding: 1px 6px;
  line-height: 18px;
  display: inline-block;
}

.sidebar .detail-card {
  border: 1px solid var(--grid-border);
  border-radius: 10px;
  padding: 14px;
  background: var(--surface);
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.detail-header {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}
.detail-gregorian {
  font-size: 18px;
  font-weight: 700;
}
.detail-lunar {
  font-size: 14px;
  color: var(--muted);
}
.detail-body .detail-item {
  padding: 6px 0;
  font-size: 14px;
}
.detail-body .detail-item strong {
  color: var(--brand);
}
.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  font-size: 12px;
  margin-right: 10px;
  border: 1px solid var(--grid-border);
  flex: 0 0 auto;
}
.tag-yi {
  background: var(--brand);
  color: #fffaf3;
  border-color: transparent;
}
.tag-ji {
  background: #2b2019;
  color: #fffaf3;
  border-color: transparent;
}
.detail-yi, .detail-ji {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.detail-text {
  color: var(--fg);
  line-height: 1.6;
}

.app-footer {
  padding: 16px;
  color: var(--muted);
  border-top: 1px solid var(--grid-border);
  font-size: 12px;
}