/* 紅茶圖書館：黑白為主，霧粉只用在今日提醒與今天到期的格子 */
:root {
  --bg: #F9F9F2;
  --paper: #FFFFFF;
  --ink: #1C1C1C;
  --muted: #6B6862;
  --line: #DAD7CC;
  --line-strong: #B9B5A8;
  --head: #1C1C1C;
  --head-ink: #F9F9F2;
  --soft: #F1F0E8;
  --pink: #F4DFE2;
  --pink-strong: #B9707B;
  --pink-ink: #7A3C46;
  --sel: #E6E4DA;
  --cursor: #1C1C1C;
  --na: repeating-linear-gradient(135deg, #EEEDE6 0 6px, #E4E2D9 6px 12px);
  --danger: #A23B3B;
  --font: "Nunito", "Noto Sans TC", system-ui, sans-serif;
  --font-head: "Instrument Sans", "Noto Sans TC", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--ink); font: 14px/1.5 var(--font); letter-spacing: .02em; }
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
h2 { font: 600 20px/1.3 var(--font-head); letter-spacing: .08em; margin: 0; }
h3 { font: 600 15px/1.4 var(--font-head); letter-spacing: .06em; margin: 22px 0 8px; }
.muted { color: var(--muted); }

/* ---------- 頂欄 ---------- */
.topbar { height: 56px; background: var(--head); color: var(--head-ink); display: flex; align-items: center; justify-content: space-between; padding: 0 16px; position: sticky; top: 0; z-index: 20; }
.logo { height: 40px; filter: invert(1); }
.topbar-right { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.sync::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #8FBF8F; margin-right: 6px; vertical-align: 1px; }
.sync:empty { display: none; }
.who button { background: none; border: 1px solid rgba(249, 249, 242, .4); color: var(--head-ink); border-radius: 4px; padding: 2px 10px; cursor: pointer; margin-left: 8px; }
.preview-tag { background: var(--pink); color: var(--pink-ink); border-radius: 3px; padding: 1px 6px; font-size: 12px; margin-right: 8px; }

/* ---------- 框架 ---------- */
.shell { display: flex; min-height: calc(100vh - 56px); }
.nav { width: 180px; flex: none; border-right: 1px solid var(--line); padding: 16px 0; background: var(--bg); }
.nav a { display: block; padding: 9px 20px; color: var(--ink); text-decoration: none; font-family: var(--font-head); letter-spacing: .08em; }
.nav a:hover { background: var(--soft); }
.nav a.on { background: var(--ink); color: var(--head-ink); }
.nav .nav-t { font-size: 12px; color: var(--muted); padding: 18px 20px 6px; letter-spacing: .1em; border-top: 1px solid var(--line); margin-top: 14px; }
.nav .nav-link { font-family: var(--font); font-size: 13px; letter-spacing: .02em; }
.nav .nav-link::after { content: " ↗"; color: var(--muted); }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.tools { min-height: 44px; display: flex; align-items: center; gap: 8px; padding: 6px 20px; border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 56px; z-index: 10; font-size: 13px; }
.tools:empty { display: none; }
.tools .count { color: var(--muted); margin-right: 4px; }
.view { padding: 18px 20px 40px; min-width: 0; }
@media (max-width: 760px) {
  .shell { flex-direction: column; }
  .nav { width: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 0; display: flex; overflow-x: auto; white-space: nowrap; }
  .nav a { padding: 10px 14px; }
  .nav .nav-t { display: none; }
  .nav .nav-link { color: var(--muted); border-left: 1px solid var(--line); }
  .tools { top: 56px; padding: 6px 16px; flex-wrap: wrap; }
  .view { padding: 14px 16px 32px; }
  .logo { height: 34px; }
  .sync { font-size: 0; }
  .sync::before { margin-right: 0; }
  .topbar-right { gap: 8px; font-size: 12px; white-space: nowrap; }
  .preview-tag { margin-right: 4px; }
}

/* ---------- 按鈕、輸入 ---------- */
.btn { border: 1px solid var(--ink); background: var(--ink); color: var(--head-ink); border-radius: 4px; padding: 6px 14px; cursor: pointer; letter-spacing: .06em; }
.btn.ghost { background: var(--paper); color: var(--ink); border-color: var(--line-strong); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn:disabled { opacity: .4; cursor: default; }
.btn.small { padding: 2px 10px; font-size: 13px; }
input.in, select.in { border: 1px solid var(--line-strong); background: var(--paper); border-radius: 4px; padding: 6px 10px; }
.lbl { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }

/* ---------- 頁首 ---------- */
.pg-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }

/* ---------- 今日提醒（霧粉） ---------- */
.remind { background: var(--pink); border: 1px solid #E9C6CB; border-radius: 6px; padding: 10px 14px; margin-bottom: 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; }
.remind > b { font-family: var(--font-head); letter-spacing: .08em; color: var(--pink-ink); }
.remind .rg { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.remind .rg-t { color: var(--pink-ink); font-weight: 700; }
.chip { border: 1px solid var(--pink-strong); background: var(--paper); color: var(--ink); border-radius: 999px; padding: 1px 10px; cursor: pointer; font-size: 13px; }
.chip:hover { background: #FBF0F1; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line-strong); border-radius: 4px; background: var(--paper); }
table.grid { border-collapse: collapse; min-width: 100%; font-size: 13px; }
table.grid th { background: var(--soft); font-weight: 600; font-family: var(--font-head); letter-spacing: .04em; padding: 8px 10px; border-bottom: 1px solid var(--line-strong); border-right: 1px solid var(--line); white-space: nowrap; position: sticky; top: 0; z-index: 1; }
table.grid td { border-right: 1px solid var(--line); padding: 4px 10px; height: 26px; text-align: center; white-space: nowrap; cursor: default; position: relative; }
table.grid tr.r1 td { border-top: 1px solid var(--line-strong); }
table.grid tr.r2 td { border-top: 1px dashed var(--line); }
table.grid tr.one td { border-top: 1px solid var(--line-strong); }
table.grid td.name { text-align: left; font-weight: 600; min-width: 120px; }
table.grid td.note { text-align: left; min-width: 180px; white-space: normal; max-width: 280px; }
table.grid td.item { max-width: 130px; overflow: hidden; text-overflow: ellipsis; color: var(--muted); }
table.grid td.mark { font-size: 15px; }
table.grid td.mark.txt { font-size: 13px; }
table.grid td.auto { color: var(--ink); }
table.grid td.manual-empty::after { content: "輸入"; color: #C9C5B8; font-size: 12px; }
table.grid td.today { background: var(--pink); color: var(--pink-ink); font-weight: 700; }
table.grid td.na { background: var(--na); }
table.grid td.type small { display: block; color: var(--muted); font-size: 11px; }
table.grid tr.sel td { background: var(--sel); }
table.grid tr.sel td.today { background: #EBCBD0; }
table.grid td.cur { outline: 2px solid var(--cursor); outline-offset: -2px; }
table.grid td.clickable { cursor: pointer; }
table.grid tr.new td { border-top: 1px solid var(--line-strong); }
table.grid td.newcell { text-align: left; color: #B0AC9F; }
table.grid td.newcell:empty::after { content: "＋ 打名字新增"; }
table.grid td.empty { color: var(--muted); padding: 24px; }

/* 格子裡的編輯框 */
.cell-edit { position: absolute; inset: 0; width: 100%; height: 100%; border: 2px solid var(--cursor); padding: 2px 8px; background: var(--paper); font-size: 13px; z-index: 2; }

/* 小選單 */
.menu { position: fixed; z-index: 50; background: var(--paper); border: 1px solid var(--line-strong); border-radius: 6px; box-shadow: 0 6px 20px rgba(0, 0, 0, .12); padding: 4px; min-width: 120px; }
.menu button { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 6px 12px; border-radius: 4px; cursor: pointer; }
.menu button:hover, .menu button:focus { background: var(--soft); outline: none; }
.menu button.clear { color: var(--muted); border-top: 1px solid var(--line); border-radius: 0; margin-top: 4px; }
.menu .menu-t { font-size: 12px; color: var(--muted); padding: 4px 12px; }
.menu input { width: calc(100% - 8px); margin: 4px; }

/* 對話框 */
.dlg-back { position: fixed; inset: 0; background: rgba(28, 28, 28, .35); z-index: 60; display: flex; align-items: center; justify-content: center; padding: 16px; }
.dlg { background: var(--paper); border-radius: 8px; padding: 20px; width: 100%; max-width: 380px; box-shadow: 0 10px 40px rgba(0, 0, 0, .2); }
.dlg h3 { margin-top: 0; }
.dlg .acts { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }

/* 一般表格（月統計、紀錄、人員、設定） */
table.plain { border-collapse: collapse; background: var(--paper); border: 1px solid var(--line-strong); font-size: 13px; min-width: 280px; }
table.plain th, table.plain td { border-bottom: 1px solid var(--line); padding: 7px 12px; text-align: left; }
table.plain th { background: var(--soft); font-family: var(--font-head); font-weight: 600; letter-spacing: .04em; }
table.plain td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.plain tr.sum td { font-weight: 700; border-top: 1px solid var(--line-strong); }
.stats-cols { display: flex; gap: 28px; flex-wrap: wrap; align-items: flex-start; }

/* 登入 */
.login { max-width: 340px; margin: 60px auto; background: var(--paper); border: 1px solid var(--line); border-radius: 8px; padding: 28px; }
.login h2 { margin-bottom: 18px; }
.login .in { width: 100%; }
.login .field { margin-bottom: 14px; }
.login .err { color: var(--danger); min-height: 20px; font-size: 13px; }
.hint { background: var(--soft); border-radius: 4px; padding: 8px 10px; font-size: 12px; color: var(--muted); margin-top: 14px; }

/* 提示訊息 */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--head-ink); padding: 8px 18px; border-radius: 6px; font-size: 13px; opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 70; }
.toast.on { opacity: 1; }