/* 喚雨機器喵 後台 — 設計語言：柔紫 × 雨滴 */
:root {
  --bg: #f6f4fb; --panel: #ffffff; --panel-2: #faf8ff;
  --line: #e6e0f2; --text: #2b2440; --muted: #7c7391;
  --brand: #9b6dd6; --brand-2: #c9a7eb; --brand-soft: #f0e8fb;
  --ok: #2ea36a; --warn: #d99a17; --err: #d94a4a;
  --radius: 14px; --shadow: 0 2px 10px rgba(80, 60, 120, .07);
  /* 圖表分類色（依固定順序指派，不循環）；已通過色盲分辨度驗證 */
  --c1: #7c5cd6; --c2: #1f9d8f; --c3: #c9741f; --c4: #c94f7c; --c5: #3f7fd4;
  --grid: #e9e4f3;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17141f; --panel: #1f1b2b; --panel-2: #262034;
    --line: #332b46; --text: #ece8f5; --muted: #9d94b5;
    --brand: #b389ea; --brand-2: #8e63c9; --brand-soft: #2a2240;
    --shadow: 0 2px 12px rgba(0, 0, 0, .35);
    --c1: #8f74e0; --c2: #20998a; --c3: #c07a22; --c4: #cf6690; --c5: #4a86d6;
    --grid: #2e2740;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); }
h1, h2, h3 { margin: 0 0 .6rem; line-height: 1.3; }

/* ---------- 登入 ---------- */
.login-wrap { min-height: 100dvh; display: grid; place-items: center; padding: 20px;
  background: radial-gradient(1000px 500px at 50% -10%, var(--brand-soft), var(--bg)); }
.login-card { width: min(400px, 100%); background: var(--panel); border: 1px solid var(--line);
  border-radius: 20px; padding: 32px 26px; box-shadow: var(--shadow); }
.login-card h1 { font-size: 24px; text-align: center; }
.login-card p.sub { text-align: center; color: var(--muted); margin: 0 0 22px; font-size: 14px; }

/* ---------- 版面 ---------- */
.layout { display: grid; grid-template-columns: 232px 1fr; min-height: 100dvh; }
.side { background: var(--panel); border-right: 1px solid var(--line); padding: 16px 12px;
  display: flex; flex-direction: column; gap: 4px; position: sticky; top: 0; height: 100dvh; overflow-y: auto; }
.side .logo { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 17px; padding: 8px 10px 14px; }
.side .logo span.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--err); }
.side .logo span.dot.on { background: var(--ok); }
.nav-item { display: flex; align-items: center; gap: 9px; padding: 9px 11px; border-radius: 10px;
  cursor: pointer; color: var(--muted); font-size: 14.5px; border: 1px solid transparent; }
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.ico { width: 18px; height: 18px; flex: 0 0 18px; opacity: .85; }
.nav-item.active .ico, .nav-item:hover .ico { opacity: 1; }
.side .logo .ico { width: 20px; height: 20px; flex: 0 0 20px; color: var(--brand); opacity: 1; }
.nav-item.active { background: var(--brand-soft); color: var(--brand); border-color: var(--line); font-weight: 600; }
.side .spacer { flex: 1; }
.main { padding: 22px 26px 60px; max-width: 1240px; width: 100%; }
.topbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.topbar h2 { margin: 0; font-size: 21px; }
.topbar .grow { flex: 1; }

/* ---------- 元件 ---------- */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); margin-bottom: 16px; }
.card > h3 { font-size: 15px; color: var(--muted); font-weight: 600; letter-spacing: .3px; }
.grid { display: grid; gap: 14px; }
.grid.c2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid.c3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.grid.c4 { grid-template-columns: repeat(auto-fit, minmax(165px, 1fr)); }

.stat { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 15px 16px; }
.stat .k { color: var(--muted); font-size: 13px; }
.stat .v { font-size: 25px; font-weight: 700; margin-top: 3px; font-variant-numeric: tabular-nums; }
.stat .v.small { font-size: 19px; }
.stat.accent { background: linear-gradient(135deg, var(--brand-soft), var(--panel)); border-color: var(--brand-2); }

.btn { background: var(--brand); color: #fff; border: 0; border-radius: 10px; padding: 9px 15px;
  font-size: 14px; cursor: pointer; font-weight: 600; }
.btn:hover { filter: brightness(1.07); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--line); }
.btn.danger { background: var(--err); }
.btn.ok { background: var(--ok); }
.btn.sm { padding: 5px 10px; font-size: 13px; border-radius: 8px; }

label.f { display: block; margin-bottom: 12px; font-size: 13.5px; color: var(--muted); }
label.f > span { display: block; margin-bottom: 5px; }
input, select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--panel-2); color: var(--text); font: inherit; font-size: 14px;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-2); outline-offset: -1px; }
textarea { min-height: 90px; resize: vertical; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1; min-width: 140px; }
.row > .fit { flex: 0 0 auto; min-width: 0; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
th, td { padding: 9px 11px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; letter-spacing: .4px; }
tbody tr:hover { background: var(--panel-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.tag { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: var(--brand-soft); color: var(--brand); }
.tag.ok { background: rgba(46, 163, 106, .14); color: var(--ok); }
.tag.warn { background: rgba(217, 154, 23, .15); color: var(--warn); }
.tag.err { background: rgba(217, 74, 74, .14); color: var(--err); }
.muted { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 34px 10px; }

/* ---------- 彈窗 / 提示 ---------- */
.modal-back { position: fixed; inset: 0; background: rgba(30, 22, 50, .5); display: grid; place-items: center;
  padding: 16px; z-index: 90; }
.modal { background: var(--panel); border-radius: 16px; width: min(520px, 100%); max-height: 88dvh;
  display: flex; flex-direction: column; box-shadow: 0 18px 50px rgba(0, 0, 0, .3); }
.modal-head { padding: 16px 20px; font-weight: 700; border-bottom: 1px solid var(--line); }
.modal-body { padding: 18px 20px; overflow-y: auto; }
.modal-foot { padding: 13px 20px; border-top: 1px solid var(--line); display: flex; gap: 10px; justify-content: flex-end; }

#toast { position: fixed; top: 16px; right: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 120; }
.toast { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--brand);
  padding: 11px 16px; border-radius: 10px; box-shadow: var(--shadow); font-size: 14px; max-width: 330px; }
.toast.ok { border-left-color: var(--ok); }
.toast.err { border-left-color: var(--err); }

/* ---------- 手機 ---------- */
.menu-btn { display: none; }
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: fixed; inset: 0 auto 0 0; width: 250px; z-index: 100; transform: translateX(-100%);
    transition: transform .22s; }
  .side.open { transform: none; box-shadow: 0 0 40px rgba(0, 0, 0, .3); }
  .menu-btn { display: inline-flex; }
  .main { padding: 16px 14px 60px; }
  .scrim { position: fixed; inset: 0; background: rgba(0, 0, 0, .4); z-index: 99; }
}

/* ---------- 圖表 ---------- */
.chart-card h3 { margin-bottom: 10px; }
.chart { width: 100%; height: auto; display: block; overflow: visible; }
.chart .gl { stroke: var(--grid); stroke-width: 1; }
.chart .ax { fill: var(--muted); font-size: 11.5px; }
.chart .ax.leg { font-size: 12.5px; }
.chart .val { fill: var(--text); font-size: 12px; font-weight: 600; }
.chart .hero { fill: var(--text); font-size: 22px; font-weight: 700; }
.chart .bar { transition: opacity .12s; }
.chart .bar:hover, .chart .slice:hover { opacity: .82; }
.chart .slice { stroke: var(--panel); stroke-width: 2; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 8px; color: var(--muted); font-size: 13px; }
.chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }