/* =========================================================
   解答万物的答案之书 · 样式
   墨色底、宣纸色字，一句居中；日历面板密而不乱。
   ========================================================= */
:root {
  --ink-0: #0d0b09;
  --ink-1: #14110e;
  --ink-2: #1c1815;
  --ink-3: #262019;
  --line: #3a3128;
  --paper: #e8ddc9;
  --paper-dim: #b7ab97;
  --paper-faint: #7d7365;
  --gold: #c8a24a;
  --gold-dim: #8a6f31;
  --cinnabar: #b4472e;
  --jade: #6f9276;
  --radius: 14px;
  --serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", "Georgia", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Noto Sans SC", "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(1200px 700px at 12% -10%, #221c16 0%, rgba(34,28,22,0) 60%),
    radial-gradient(900px 600px at 105% 5%, #1a1a20 0%, rgba(26,26,32,0) 55%),
    var(--ink-0);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--gold-dim); color: #fff; }

/* ---------- 布局 ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 28px 20px 60px; }
.masthead { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; margin-bottom: 22px; }
.title { font-family: var(--serif); font-size: 30px; letter-spacing: .16em; margin: 0; font-weight: 600; }
.title .dot { color: var(--gold); }
.subtitle { color: var(--paper-faint); font-size: 13px; letter-spacing: .06em; margin: 4px 0 0; }
.masthead-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 20px; align-items: start; }
@media (max-width: 900px) { .cols { grid-template-columns: 1fr; } }

/* ---------- 卡片 ---------- */
.card {
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 18px 40px -28px rgba(0,0,0,.9);
}
.card + .card { margin-top: 20px; }
.card-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  font-size: 12px; letter-spacing: .18em; color: var(--gold-dim);
  text-transform: uppercase; margin: 0 0 14px; padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.card-head .tools { display: flex; gap: 8px; align-items: center; }

/* ---------- 万年历 ---------- */
.now { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 4px; }
.now-date { font-family: var(--serif); font-size: 27px; letter-spacing: .04em; }
.now-clock { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 25px; color: var(--gold); letter-spacing: .04em; }
.now-week { color: var(--paper-faint); font-size: 13px; }
.now-zodiac { font-size: 12px; color: var(--jade); border: 1px solid rgba(111,146,118,.4); padding: 1px 8px; border-radius: 999px; }

.lunar-line { font-family: var(--serif); font-size: 16px; color: var(--paper-dim); margin-top: 2px; }

.gz { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 14px; }
@media (max-width: 520px) { .gz { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.gz > div { background: var(--ink-2); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.gz .k { font-size: 11px; color: var(--paper-faint); letter-spacing: .1em; }
.gz .v { font-family: var(--serif); font-size: 19px; letter-spacing: .08em; margin-top: 2px; }
.gz .n { font-size: 11px; color: var(--gold-dim); }

.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(122px, 1fr)); gap: 8px 14px; margin-top: 14px; }
.fact { border-left: 2px solid var(--line); padding-left: 9px; }
.fact .k { font-size: 11px; color: var(--paper-faint); letter-spacing: .08em; }
.fact .v { font-size: 14px; color: var(--paper); margin-top: 1px; }
.fact .v small { color: var(--paper-faint); font-size: 12px; }

.progress { height: 4px; background: var(--ink-3); border-radius: 999px; overflow: hidden; margin-top: 4px; }
.progress i { display: block; height: 100%; background: linear-gradient(90deg, var(--gold-dim), var(--gold)); }

/* ---------- 月历网格 ---------- */
.grid-head, .grid-row { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.grid-head div { text-align: center; font-size: 11px; color: var(--paper-faint); padding-bottom: 4px; letter-spacing: .08em; }
.grid-row { margin-top: 4px; }
.cell {
  min-height: 46px; border: 1px solid transparent; border-radius: 8px; padding: 3px 4px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--ink-2); cursor: default;
}
.cell.out { opacity: .28; }
.cell.today { border-color: var(--gold); background: rgba(200,162,74,.1); }
.cell.sel { border-color: var(--cinnabar); }
.cell .d { font-family: var(--serif); font-size: 15px; line-height: 1.1; }
.cell .l { font-size: 10px; color: var(--paper-faint); line-height: 1.2; }
.cell .term { font-size: 10px; color: var(--gold); line-height: 1.2; }
.cell.monthhead .l { color: var(--cinnabar); font-weight: 600; }

/* ---------- 提问 ---------- */
.ask-row { display: flex; gap: 10px; }
.ask-row input {
  flex: 1 1 auto; min-width: 0;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 10px;
  color: var(--paper); font-family: var(--serif); font-size: 16px; padding: 12px 14px;
  outline: none; transition: border-color .15s;
}
.ask-row input:focus { border-color: var(--gold-dim); }
.ask-row input::placeholder { color: var(--paper-faint); font-family: var(--sans); font-size: 14px; }

button {
  font-family: var(--sans); font-size: 13px; color: var(--paper);
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 14px; cursor: pointer; white-space: nowrap;
  transition: background .15s, border-color .15s, color .15s;
}
button:hover { background: #322a20; border-color: var(--gold-dim); }
button:active { transform: translateY(1px); }
button:disabled { opacity: .45; cursor: default; }
button.primary { background: linear-gradient(180deg, #6b5320, #4c3a17); border-color: var(--gold-dim); color: #f4ead6; }
button.primary:hover { background: linear-gradient(180deg, #7d6126, #5a451b); }
button.ghost { background: transparent; }
button.on { border-color: var(--gold); color: var(--gold); }

.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.chip {
  font-size: 12px; color: var(--paper-dim); background: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 11px; cursor: pointer;
}
.chip:hover { color: var(--paper); border-color: var(--gold-dim); }

/* ---------- 答案卡 ---------- */
.book {
  position: relative; border: 1px solid var(--gold-dim); border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(200,162,74,.075), rgba(200,162,74,.015)),
    var(--ink-1);
  padding: 30px 26px 24px; text-align: center; overflow: hidden;
}
.book::before, .book::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-dim), transparent);
}
.book::before { top: 12px; } .book::after { bottom: 12px; }
.book .ans {
  font-family: var(--serif); font-size: clamp(20px, 2.5vw, 28px); line-height: 1.85;
  letter-spacing: .05em; color: #f2e8d5; margin: 6px 0 16px; word-break: break-word;
}
.book .ans-latin { letter-spacing: 0; line-height: 1.6; }
.book .cite { font-family: var(--serif); font-size: 14px; color: var(--gold); letter-spacing: .05em; }
.book .genre {
  display: inline-block; font-size: 11px; color: var(--paper-dim);
  border: 1px solid var(--line); border-radius: 999px; padding: 1px 9px; margin-left: 8px;
  vertical-align: 1px;
}
.book .note { margin-top: 16px; font-size: 12.5px; color: var(--paper-faint); letter-spacing: .04em; }
.book .scope { margin-top: 6px; font-size: 12px; color: var(--jade); letter-spacing: .02em; }
.book .coords {
  margin-top: 14px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px; color: var(--paper-faint); letter-spacing: .02em;
  border-top: 1px dashed var(--line); padding-top: 12px; word-break: break-all;
}
.book.swap { animation: fade .45s ease; }
@keyframes fade { from { opacity: .25; transform: translateY(5px); } to { opacity: 1; transform: none; } }

.alt-list { margin-top: 14px; display: grid; gap: 8px; }
.alt {
  text-align: left; width: 100%;
  background: var(--ink-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 13px;
}
.alt .t { font-family: var(--serif); font-size: 15px; color: var(--paper); letter-spacing: .03em; }
.alt .c { font-size: 11.5px; color: var(--paper-faint); margin-top: 2px; }

.book-actions { display: flex; gap: 10px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }

/* ---------- 状态条 ---------- */
.status { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--paper-faint); margin-top: 16px; }
.pill { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; }
.pill .led { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); }
.pill.ready .led { background: var(--jade); }
.pill.bad .led { background: var(--cinnabar); }
.pill.warn .led { background: var(--gold); }

footer { margin-top: 26px; font-size: 11.5px; color: var(--paper-faint); line-height: 1.9; }
footer a { color: var(--gold-dim); text-decoration: none; }
footer a:hover { text-decoration: underline; }
.err { color: var(--cinnabar); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }