/* Styled to match zhoutianshuo.github.io: white space, transparent panels, Helvetica,
   and the site's accent (magenta in light mode, blue in dark mode). */

:root {
  --bg: #ffffff;
  --text: #000000;
  --text-dim: #828282;
  --line: rgba(0, 0, 0, 0.1);
  --line-strong: rgba(0, 0, 0, 0.22);
  --accent: #b509ac;
  --accent-soft: rgba(181, 9, 172, 0.07);
  --festival: #b83a29;
  --festival-soft: rgba(184, 58, 41, 0.08);
  --term: #1f8f5c;
  --term-soft: rgba(31, 143, 92, 0.09);
  --holiday: #2f5f8f;
  --holiday-soft: rgba(47, 95, 143, 0.09);
  --font: Helvetica, "Helvetica Neue", "Heiti SC", "STHeiti", "PingFang SC", Arial, "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1c1c1d;
    --text: #e8e8e8;
    --text-dim: #828282;
    --line: #424246;
    --line-strong: #5c5c61;
    --accent: #2698ba;
    --accent-soft: rgba(38, 152, 186, 0.14);
    --festival: #de6c56;
    --festival-soft: rgba(222, 108, 86, 0.14);
    --term: #52c084;
    --term-soft: rgba(82, 192, 132, 0.14);
    --holiday: #8fb3dc;
    --holiday-soft: rgba(143, 179, 220, 0.14);
  }
}

:root[data-theme="dark"] {
  --bg: #1c1c1d;
  --text: #e8e8e8;
  --text-dim: #828282;
  --line: #424246;
  --line-strong: #5c5c61;
  --accent: #2698ba;
  --accent-soft: rgba(38, 152, 186, 0.14);
  --festival: #de6c56;
  --festival-soft: rgba(222, 108, 86, 0.14);
  --term: #52c084;
  --term-soft: rgba(82, 192, 132, 0.14);
  --holiday: #8fb3dc;
  --holiday-soft: rgba(143, 179, 220, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.45;
}

button, select { font-family: inherit; }

.app {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

/* ---------- header ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
  gap: 12px;
}

h1 {
  font-size: 2rem;
  margin: 0;
  font-weight: 300;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lang-toggle {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.lang-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  padding: 4px 10px;
  font-size: 0.85rem;
  border-radius: 4px;
  cursor: pointer;
}

.lang-btn:hover { color: var(--accent); }

.lang-btn.active {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- sections: no cards, just a divider and space ---------- */
.card {
  background: transparent;
  border: none;
  border-top: 1px solid var(--line);
  padding: 24px 0 8px;
  margin-bottom: 28px;
}

.card h2 {
  margin: 0 0 18px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.today-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.today-block {
  background: transparent;
  padding: 0;
}

.selected-card .today-block { background: transparent; }

.today-block-lunar {
  display: flex;
  align-items: center;
  gap: 14px;
}

.zodiac-icon {
  width: 53px;
  height: 53px;
  flex-shrink: 0;
  border-radius: 10px;
  object-fit: contain;
}

.zodiac-icon-xs {
  width: 14px;
  height: 14px;
  object-fit: contain;
  position: absolute;
  top: 4px;
  right: 4px;
}

.today-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.today-main {
  font-size: 1.35rem;
  font-weight: 400;
}

.today-sub {
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.today-extra {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.78rem;
}

.tag-term { background: var(--term-soft); color: var(--term); }
.tag-festival { background: var(--festival-soft); color: var(--festival); }
.tag-holiday { background: var(--holiday-soft); color: var(--holiday); }

/* ---------- month calendar ---------- */
.cal-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.cal-nav-group {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.cal-picker {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.cal-select {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  border-radius: 4px;
  padding: 4px 6px;
  font-size: 1.15rem;
  font-weight: 400;
  cursor: pointer;
  white-space: nowrap;
}

.cal-select:hover { border-color: var(--line-strong); }

.cal-select option { background: var(--bg); color: var(--text); }

.nav-btn, .today-btn {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
  font-size: 1rem;
}

.nav-btn {
  font-size: 1.7rem;
  line-height: 1;
  padding: 0 10px 4px;
  min-width: 2.4rem;
}

.today-btn {
  font-size: 0.85rem;
  border-color: var(--line-strong);
}

.nav-btn:hover, .today-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
  padding-bottom: 8px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  min-height: 68px;
  border-radius: 6px;
  padding: 6px 4px;
  background: transparent;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: background 0.15s ease;
}

.day-cell:hover { background: var(--accent-soft); }

.day-cell.other-month { opacity: 0.3; }

.day-cell.weekend .day-num { color: var(--festival); }

.day-cell.is-today {
  outline: 1.5px solid var(--accent);
  outline-offset: -1.5px;
}

.day-cell.is-today .day-num { color: var(--accent); }

.day-cell.is-selected { background: var(--accent-soft); }

.day-num {
  font-size: 0.95rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.day-lunar {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.day-tag {
  font-size: 0.62rem;
  margin-top: 2px;
  padding: 1px 4px;
  border-radius: 3px;
  display: inline-block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.day-tag.term { background: var(--term-soft); color: var(--term); }
.day-tag.fest { background: var(--festival-soft); color: var(--festival); }
.day-tag.holiday { background: var(--holiday-soft); color: var(--holiday); }

/* ---------- small screens ---------- */
@media (max-width: 600px) {
  h1 { font-size: 1.4rem; }
  .app { padding: 28px 14px 48px; }
  .topbar { margin-bottom: 24px; }
  .today-grid { grid-template-columns: 1fr; gap: 18px; }
  .day-cell { min-height: 56px; }
  .cal-header {
    flex-wrap: wrap;
    justify-content: center;
  }
  .cal-picker {
    order: -1;
    flex-basis: 100%;
  }
  .cal-select { font-size: 1rem; }
  .nav-btn { font-size: 1.55rem; padding: 0 8px 4px; min-width: 2.2rem; }
  .today-btn { padding: 4px 8px; font-size: 0.9rem; }
}

@media (max-width: 360px) {
  h1 { font-size: 1.15rem; }
  .lang-btn { padding: 4px 8px; font-size: 0.78rem; }
  .cal-header { gap: 6px; }
  .nav-btn { font-size: 1.4rem; padding: 0 6px 3px; min-width: 2rem; }
  .today-btn { padding: 4px 6px; font-size: 0.8rem; }
}