:root {
  --c-primary: #1f6f5c;
  --c-primary-2: #2a8f77;
  --c-primary-bg: #e8f4f0;
  --c-bg: #f4f6f5;
  --c-card: #fff;
  --c-text: #1d2724;
  --c-sub: #6b7a75;
  --c-line: #e3e8e6;
  --c-red: #d64545;
  --c-red-bg: #fdecec;
  --c-orange: #d9822b;
  --c-orange-bg: #fdf1e3;
  --c-blue: #2f6fd6;
  --c-blue-bg: #e9f0fc;
  --c-gray-bg: #eef1f0;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 2px 8px rgba(0,0,0,.04);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--c-text); background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--c-primary); text-decoration: none; }
.hidden { display: none !important; }
h1, h2, h3 { margin: 0; font-weight: 600; }
h2 { font-size: 20px; }
h3 { font-size: 15px; }
.muted { color: var(--c-sub); }
.small { font-size: 12px; }
.red { color: var(--c-red); }
.green { color: var(--c-primary); }
.orange { color: var(--c-orange); }
.num { font-variant-numeric: tabular-nums; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.mt { margin-top: 12px; }
.mb { margin-bottom: 12px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grow { flex: 1; }
hr { border: 0; border-top: 1px solid var(--c-line); margin: 12px 0; }

/* ── 登录 ── */
.login { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; background: linear-gradient(160deg, #e8f4f0, #f7f9f8); }
.login-card { width: 100%; max-width: 340px; background: #fff; border-radius: 16px; padding: 32px 24px; box-shadow: var(--shadow); text-align: center; }
.login-logo { font-size: 48px; }
.login-card h1 { margin: 8px 0 20px; font-size: 22px; }
.login-card input { margin-bottom: 12px; text-align: center; }
.login-err { color: var(--c-red); min-height: 20px; margin: 8px 0 0; }

/* ── 布局 ── */
.app { display: flex; min-height: 100vh; }
.nav { width: 200px; background: #17332c; color: #cfe3dc; flex-shrink: 0; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { padding: 20px 18px; font-size: 16px; color: #fff; display: flex; gap: 8px; align-items: center; }
.brand b { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav nav a { display: block; padding: 11px 20px; color: #cfe3dc; border-left: 3px solid transparent; }
.nav nav a:hover { background: rgba(255,255,255,.05); }
.nav nav a.active { background: rgba(255,255,255,.1); color: #fff; border-left-color: #5fd0b0; font-weight: 600; }
.main { flex: 1; min-width: 0; padding: 24px; max-width: 1280px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.page-head .actions { display: flex; gap: 8px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .app { flex-direction: column; }
  .nav { width: 100%; height: auto; position: sticky; top: 0; z-index: 20; }
  .brand { display: none; }
  .nav nav { display: flex; overflow-x: auto; scrollbar-width: none; }
  .nav nav::-webkit-scrollbar { display: none; }
  .nav nav a { flex-shrink: 0; padding: 12px 14px; border-left: 0; border-bottom: 3px solid transparent; font-size: 13px; }
  .nav nav a.active { border-bottom-color: #5fd0b0; }
  .main { padding: 14px 12px 80px; }
  h2 { font-size: 18px; }
}

/* ── 卡片/统计 ── */
.card { background: var(--c-card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card + .card { margin-top: 12px; }
.card-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; gap: 8px; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: #fff; border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.stat .label { color: var(--c-sub); font-size: 13px; }
.stat .value { font-size: 22px; font-weight: 600; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .sub { font-size: 12px; color: var(--c-sub); margin-top: 2px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 12px; align-items: start; }
.grid2 > .card + .card { margin-top: 0; }
@media (max-width: 860px) { .stat .value { font-size: 18px; } .stats { grid-template-columns: repeat(2, 1fr); gap: 8px; } }

.quick { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; margin-bottom: 16px; }
.quick a, .quick button { background: #fff; border: 0; border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 10px; text-align: center; color: var(--c-text); font-size: 13px; cursor: pointer; }
.quick .ico { font-size: 22px; display: block; margin-bottom: 4px; }
.quick a:hover, .quick button:hover { background: var(--c-primary-bg); }

.todo-list { list-style: none; padding: 0; margin: 0; }
.todo-list li { padding: 9px 0; border-bottom: 1px dashed var(--c-line); display: flex; justify-content: space-between; gap: 8px; align-items: center; cursor: pointer; }
.todo-list li:last-child { border-bottom: 0; }
.todo-list li:hover { background: #fafcfb; }
.empty { color: var(--c-sub); text-align: center; padding: 18px 0; }

/* ── 标签 ── */
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; line-height: 20px; white-space: nowrap; background: var(--c-gray-bg); color: var(--c-sub); }
.tag.green { background: var(--c-primary-bg); color: var(--c-primary); }
.tag.red { background: var(--c-red-bg); color: var(--c-red); }
.tag.orange { background: var(--c-orange-bg); color: var(--c-orange); }
.tag.blue { background: var(--c-blue-bg); color: var(--c-blue); }

/* ── 房间卡片 ── */
.floor-title { margin: 18px 0 8px; color: var(--c-sub); font-size: 13px; font-weight: 600; }
.rooms { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.room-card { background: #fff; border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); cursor: pointer; border-top: 4px solid #c5ceca; transition: transform .1s; }
.room-card:hover { transform: translateY(-2px); }
.room-card.rented { border-top-color: var(--c-primary-2); }
.room-card.repair { border-top-color: var(--c-orange); }
.room-card .code { font-size: 22px; font-weight: 700; }
.room-card .line { font-size: 12px; color: var(--c-sub); margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 13px; color: var(--c-sub); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: -1px; }
@media (max-width: 860px) { .rooms { grid-template-columns: repeat(2, 1fr); gap: 8px; } }

/* ── 表格 ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--c-line); text-align: left; vertical-align: middle; }
th { font-weight: 600; color: var(--c-sub); font-size: 13px; background: #fafbfb; white-space: nowrap; }
tr.click { cursor: pointer; }
tr.click:hover td { background: #f7fbf9; }
tr.dim td { color: #9aa6a2; }
tfoot td { font-weight: 600; background: #fafbfb; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ── 表单 ── */
input, select, textarea {
  font: inherit; color: inherit; width: 100%; padding: 8px 10px; border: 1px solid #cfd8d5; border-radius: 8px; background: #fff; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--c-primary-2); box-shadow: 0 0 0 3px rgba(42,143,119,.12); }
input[type=checkbox] { width: auto; }
textarea { min-height: 64px; resize: vertical; }
.form { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 14px; }
.form .full { grid-column: 1 / -1; }
.form label, .field { display: block; }
.form label > span, .field > span { display: block; font-size: 13px; color: var(--c-sub); margin-bottom: 4px; }
.form label.check, label.check { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.form label.check > span { display: inline; margin: 0; color: var(--c-text); }
.hint { font-size: 12px; color: var(--c-sub); margin-top: 3px; }
@media (max-width: 600px) { .form { grid-template-columns: 1fr; } }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
.filters select, .filters input { width: auto; min-width: 120px; }
.filters input[type=checkbox] { min-width: 0; }
.seg { display: inline-flex; background: var(--c-gray-bg); border-radius: 8px; padding: 3px; }
.seg button { border: 0; background: none; padding: 5px 12px; border-radius: 6px; cursor: pointer; font: inherit; color: var(--c-sub); }
.seg button.on { background: #fff; color: var(--c-text); box-shadow: 0 1px 2px rgba(0,0,0,.08); font-weight: 600; }

/* ── 按钮 ── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; padding: 7px 14px; border-radius: 8px; border: 1px solid #cfd8d5; background: #fff; color: var(--c-text); font: inherit; cursor: pointer; white-space: nowrap; }
.btn:hover { border-color: var(--c-primary-2); color: var(--c-primary); }
.btn.primary { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.btn.primary:hover { background: var(--c-primary-2); color: #fff; }
.btn.danger { color: var(--c-red); border-color: #f0c4c4; }
.btn.danger:hover { background: var(--c-red-bg); }
.btn.link { border: 0; background: none; padding: 2px 4px; color: var(--c-primary); }
.btn.small { padding: 3px 9px; font-size: 12px; }
.btn.block { width: 100%; padding: 10px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ── 弹窗 ── */
.modal-mask { position: fixed; inset: 0; background: rgba(15,30,25,.45); z-index: 100; display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto; animation: fade .15s; }
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 560px; box-shadow: 0 10px 40px rgba(0,0,0,.2); }
.modal.wide { max-width: 860px; }
.modal-head { padding: 16px 20px; border-bottom: 1px solid var(--c-line); display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.modal-head .x { border: 0; background: none; font-size: 22px; cursor: pointer; color: var(--c-sub); line-height: 1; }
.modal-body { padding: 18px 20px; }
.modal-foot { padding: 12px 20px; border-top: 1px solid var(--c-line); display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
@keyframes fade { from { opacity: 0; } }
@media (max-width: 600px) {
  .modal-mask { padding: 0; align-items: flex-end; }
  .modal { border-radius: 14px 14px 0 0; max-height: 92vh; overflow-y: auto; }
}

.toast { position: fixed; left: 50%; top: 20px; transform: translateX(-50%); z-index: 200; background: #1d2724; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: 14px; opacity: 0; pointer-events: none; transition: opacity .2s; max-width: 90vw; }
.toast.show { opacity: 1; }
.toast.err { background: var(--c-red); }

/* ── 详情 ── */
.kv { display: grid; grid-template-columns: 90px 1fr; gap: 6px 10px; }
.kv dt { color: var(--c-sub); }
.kv dd { margin: 0; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--c-line); margin-bottom: 12px; overflow-x: auto; }
.tabs button { border: 0; background: none; padding: 9px 14px; cursor: pointer; font: inherit; color: var(--c-sub); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs button.on { color: var(--c-primary); border-bottom-color: var(--c-primary); font-weight: 600; }
.items-edit .it { display: grid; grid-template-columns: 110px 1fr 110px 32px; gap: 6px; margin-bottom: 6px; align-items: center; }
@media (max-width: 600px) { .items-edit .it { grid-template-columns: 90px 1fr 80px 28px; } }
.total-line { display: flex; justify-content: space-between; padding: 6px 0; }
.total-line.big { font-size: 18px; font-weight: 700; }
.bill-img { max-width: 100%; border: 1px solid var(--c-line); border-radius: 8px; display: block; margin: 0 auto; }
.preview-box { white-space: pre-wrap; background: #f7f9f8; border-radius: 8px; padding: 12px; font-size: 13px; max-height: 320px; overflow: auto; }

/* ── 抄表 ── */
.meter-table input { width: 96px; padding: 6px 8px; text-align: right; }
.meter-table td { padding: 6px 8px; }
.meter-table .use { font-variant-numeric: tabular-nums; color: var(--c-sub); font-size: 12px; }
.meter-cards { display: none; }
@media (max-width: 760px) {
  .meter-table-wrap { display: none; }
  .meter-cards { display: block; }
  .meter-card { background: #fff; border-radius: var(--radius); padding: 12px; margin-bottom: 8px; box-shadow: var(--shadow); }
  .meter-card .mc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
  .meter-card input { text-align: right; font-size: 16px; }
}
.sticky-bar { position: sticky; bottom: 0; background: rgba(244,246,245,.95); padding: 10px 0; display: flex; justify-content: flex-end; gap: 8px; z-index: 5; backdrop-filter: blur(4px); }

/* ── 报表柱状图 ── */
.bars { display: flex; align-items: flex-end; gap: 6px; height: 160px; padding-top: 10px; }
.bars .bar { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; font-size: 11px; color: var(--c-sub); gap: 3px; cursor: pointer; }
.bars .bar .col { width: 100%; max-width: 34px; display: flex; gap: 2px; align-items: flex-end; height: calc(100% - 18px); }
.bars .bar .col div { flex: 1; border-radius: 3px 3px 0 0; min-height: 1px; }
.bars .bar.on span { color: var(--c-primary); font-weight: 700; }

.err-cell { color: var(--c-red); font-size: 12px; }
.warn-cell { color: var(--c-orange); font-size: 12px; }
.dropzone { display: block; border: 2px dashed #c5d3ce; border-radius: var(--radius); padding: 30px 16px; text-align: center; background: #fff; cursor: pointer; }
.dropzone.over { background: var(--c-primary-bg); border-color: var(--c-primary-2); }