:root {
  --bg-0: #070a17;
  --bg-1: #0d1228;
  --bg-2: #141b3a;
  --ink: #e8ecff;
  --ink-dim: #9aa3c7;
  --ink-faint: #5b648c;
  --moon: #f4f1d0;
  --moon-glow: rgba(244, 241, 208, 0.55);
  --accent: #8ea2ff;
  --rise: #ffd08a;
  --set: #a6b4ff;
  --line: rgba(255, 255, 255, 0.08);
  --card: rgba(255, 255, 255, 0.04);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(120% 90% at 50% -10%, #182047 0%, var(--bg-1) 40%, var(--bg-0) 100%);
  color: var(--ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Serif SC", system-ui, sans-serif;
  min-height: 100vh;
}

body { position: relative; overflow-x: hidden; }

/* 星空背景 */
.stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.stars .star {
  position: absolute;
  background: #fff;
  border-radius: 50%;
  opacity: 0.7;
  animation: twinkle var(--dur, 4s) ease-in-out infinite;
}
@keyframes twinkle {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.85; }
}

.topbar, main, .foot { position: relative; z-index: 1; }

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 20px 40px;
  max-width: 1920px;
  margin: 0 auto;
}
.topbar h1 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 4px;
  margin: 0;
  color: var(--moon);
  text-shadow: 0 0 18px var(--moon-glow);
}
.controls { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; }
.ctl { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--ink-dim); }
.ctl select, .ctl input {
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 14px;
  color-scheme: dark;
}
.btn-ghost {
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
  font-size: 14px;
  transition: all .15s;
}
.btn-ghost:hover { color: var(--ink); border-color: var(--accent); }

main { max-width: 1920px; margin: 0 auto; padding: 0 40px 30px; }

/* 三栏布局：左月历(1-6) 贴左 | 中央穹顶(不变) 居中 | 右月历(7-12) 贴右 */
.layout { display: flex; gap: 22px; align-items: flex-start; justify-content: space-between; }
.pane-center { flex: 0 0 600px; max-width: 600px; min-width: 0; }
.cal-col { flex: 0 0 auto; width: 190px; }

@media (max-width: 1080px) {
  /* 窄屏：中间在上，两列月历并排在下 */
  .layout { flex-wrap: wrap; justify-content: center; }
  .pane-center { flex: 1 1 100%; max-width: 640px; order: 1; margin: 0 auto; }
  .cal-col { order: 2; flex: 1 1 45%; width: auto; }
}

/* 天空穹顶 */
.dome-section {
  margin-top: 8px;
  padding: 10px 0 4px;
}
.dome-wrap { width: 100%; position: relative; }
#dome { width: 100%; height: auto; display: block; }

/* 罗盘叠加在穹顶正中央（不覆盖弧线） */
.dome-compass {
  position: absolute;
  left: 50%;
  top: 54%;
  transform: translate(-50%, -50%);
  width: 27%;
  max-width: 200px;
  min-width: 118px;
}
.dome-compass svg { width: 100%; height: auto; display: block; }

/* 观测时刻控制 */
.time-control {
  max-width: none;
  margin: 6px 0 0;
  padding: 0 2px;
}
.tc-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.tc-label { font-size: 13px; color: var(--accent); letter-spacing: 1px; }
.tc-row input[type="time"] {
  background: var(--bg-2);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 15px;
  color-scheme: dark;
  font-variant-numeric: tabular-nums;
}
.tc-now { padding: 5px 10px; font-size: 13px; }
.tc-live { font-size: 12px; color: var(--ink-dim); }
.tc-live.on { color: #7ee0a0; }

.time-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, #1a2148, #2b356b);
  outline: none;
  cursor: pointer;
}
.time-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--moon);
  box-shadow: 0 0 8px var(--moon-glow);
  cursor: pointer;
}
.time-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: none;
  border-radius: 50%;
  background: var(--moon);
  box-shadow: 0 0 8px var(--moon-glow);
  cursor: pointer;
}

.dome-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: -8px;
}
.rise-set { text-align: center; min-width: 90px; }
.rs-label { font-size: 12px; letter-spacing: 2px; }
.rise .rs-label { color: var(--rise); }
.set .rs-label { color: var(--set); }
.rs-time { font-size: 26px; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.rs-az { font-size: 11px; color: var(--ink-faint); margin-top: 2px; }

.phase-center { text-align: center; }
.phase-name { font-size: 16px; color: var(--ink); letter-spacing: 2px; }
.phase-illum { font-size: 12px; color: var(--ink-dim); margin-top: 3px; }

/* 配诗卡片 */
.poem-card {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 16px 0 8px;
  padding: 16px 22px;
  max-width: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  backdrop-filter: blur(6px);
}
.poem-phase-icon { flex: 0 0 auto; }
.poem-card blockquote { margin: 0; }
.poem-text {
  font-family: "Noto Serif SC", "STKaiti", "KaiTi", serif;
  font-size: 20px;
  line-height: 1.7;
  margin: 0 0 6px;
  color: var(--moon);
}
.poem-author { font-size: 13px; color: var(--ink-dim); font-style: normal; }

/* 观测指引卡片 */
.observe-card {
  display: flex;
  align-items: center;
  gap: 22px;
  margin: 12px 0 0;
  padding: 14px 22px;
  max-width: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  backdrop-filter: blur(6px);
}
.observe-text { flex: 1; min-width: 0; }
.observe-title { font-size: 13px; letter-spacing: 2px; color: var(--accent); margin-bottom: 8px; }
.observe-desc {
  font-size: 17px;
  line-height: 1.6;
  margin: 0 0 8px;
  color: var(--ink);
}
.observe-desc b { color: var(--moon); font-weight: 600; }
.observe-hint { font-size: 13px; color: var(--ink-dim); margin: 0; line-height: 1.5; }

@media (max-width: 560px) {
  .observe-card { flex-direction: column; gap: 14px; padding: 16px; }
  .observe-text { text-align: center; }
}

/* 全年概览 — 竖向月历列 */
.year-section { margin-top: 0; }
.year-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  min-height: 30px;
}
.year-head-spacer { min-height: 30px; margin-bottom: 12px; }
.year-head h2 { font-size: 15px; font-weight: 500; letter-spacing: 1px; color: var(--ink-dim); margin: 0; }
.year-nav { display: flex; align-items: center; gap: 8px; }
.year-nav span { font-size: 15px; font-variant-numeric: tabular-nums; min-width: 44px; text-align: center; }

/* 每列月历：月份块竖向堆叠，保持原始大小 */
.year-grid-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.month-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
}
.month-title { font-size: 12px; color: var(--ink-faint); margin-bottom: 8px; text-align: center; letter-spacing: 1px; }
.days-row { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; }
.day-cell {
  aspect-ratio: 1;
  border-radius: 5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .12s, box-shadow .12s;
}
.day-cell canvas { width: 100%; height: 100%; }
.day-cell:hover { transform: scale(1.35); box-shadow: 0 0 12px var(--moon-glow); z-index: 2; }
.day-cell.selected { outline: 2px solid var(--accent); outline-offset: 1px; }
.day-cell.full { box-shadow: 0 0 8px var(--moon-glow); }

.foot {
  text-align: center;
  font-size: 12px;
  color: var(--ink-faint);
  padding: 24px 20px 40px;
  max-width: 1920px;
  margin: 0 auto;
}

@media (max-width: 560px) {
  .topbar { padding: 16px; }
  .rs-time { font-size: 20px; }
  .poem-text { font-size: 18px; }
  .poem-card { padding: 16px; gap: 12px; }
}