:root{
  --bg:#f6f7f9; --card:#fff; --ink:#1d2129; --muted:#6b7280; --line:#e5e7eb;
  --accent:#2563eb;
  --occupied:#dbeafe; --occupied-b:#60a5fa;
  --vacant:#dcfce7;   --vacant-b:#4ade80;
  --reserved:#fef3c7; --reserved-b:#fbbf24;
  --notice:#ede9fe;   --notice-b:#a78bfa;
  --cleaning:#fee2e2; --cleaning-b:#f87171;
  --repair:#fce7f3;   --repair-b:#f472b6;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,"Noto Sans Thai",Segoe UI,sans-serif;font-size:15px;line-height:1.55}
a{color:inherit;text-decoration:none}
main{max-width:1000px;margin:0 auto;padding:16px}
.muted{color:var(--muted);font-weight:400;font-size:.88em}
.warn{color:#b45309;background:#fef3c7;padding:1px 6px;border-radius:4px;font-size:.8em;margin-left:6px}
.error{color:#b91c1c}

.topbar{display:flex;align-items:center;gap:16px;padding:10px 16px;background:#fff;
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.brand{font-weight:700}
.topbar nav{flex:1}
.logout{color:var(--muted);font-size:.9em}

.page-title{font-size:1.3rem;margin:8px 0 12px}
.legend{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.chip{font-size:.78rem;padding:2px 10px;border-radius:999px;border:1px solid var(--line)}

.floor h2{font-size:1rem;margin:20px 0 8px;color:var(--muted);font-weight:600}
.room-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.room-card{position:relative;background:var(--card);border:1px solid var(--line);
  border-left:5px solid var(--line);border-radius:10px;padding:10px 12px;transition:.12s}
.room-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.08)}
.room-no{font-weight:700;font-size:1.05rem}
.room-meta{display:flex;justify-content:space-between;align-items:center;margin:2px 0}
.tag{font-size:.75rem;color:var(--muted)}
.price{font-size:.8rem;font-weight:600}
.room-tenant{font-size:.82rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge-fix{position:absolute;top:8px;right:8px;font-size:.72rem;background:#fee2e2;
  color:#b91c1c;border-radius:999px;padding:1px 7px}

.s-occupied{background:var(--occupied);border-left-color:var(--occupied-b)}
.s-vacant{background:var(--vacant);border-left-color:var(--vacant-b)}
.s-reserved{background:var(--reserved);border-left-color:var(--reserved-b)}
.s-notice{background:var(--notice);border-left-color:var(--notice-b)}
.s-cleaning{background:var(--cleaning);border-left-color:var(--cleaning-b)}
.s-repair{background:var(--repair);border-left-color:var(--repair-b)}
.chip.s-occupied,.chip.s-vacant,.chip.s-reserved,.chip.s-notice,.chip.s-cleaning,.chip.s-repair{border-left-width:1px}

.room-head{border-radius:12px;padding:14px 16px;margin-bottom:12px;border-left:6px solid var(--line)}
.room-head h1{margin:0;font-size:1.6rem}
.head-meta{color:#334155;font-size:.9rem;margin:2px 0 8px}
.room-head select{padding:5px 10px;border-radius:8px;border:1px solid var(--line);background:#fff}
.room-note{background:#fffbeb;border:1px solid #fde68a;border-radius:8px;padding:8px 12px;margin:0 0 12px}

.card{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;margin-bottom:12px}
.card h2{font-size:1rem;margin:0 0 10px}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.card-head h2{margin:0}

table.kv{width:100%;border-collapse:collapse}
table.kv th{text-align:left;color:var(--muted);font-weight:500;width:38%;
  padding:5px 0;vertical-align:top;font-size:.9rem}
table.kv td{padding:5px 0}
table.data{width:100%;border-collapse:collapse;font-size:.9rem}
table.data th{text-align:left;color:var(--muted);font-weight:500;border-bottom:1px solid var(--line);padding:6px 4px}
table.data td{padding:6px 4px;border-bottom:1px solid #f1f3f5}
.num{text-align:right}

.ticket{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px}
.ticket.open{background:#fffdf5;border-color:#fde68a}
.ticket-head{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline}
.ticket p{margin:6px 0;color:#374151}
.pri{font-size:.74rem;padding:1px 8px;border-radius:999px;background:#f1f5f9;color:#475569}
.pri.p-ด่วนมาก🔥{background:#fee2e2;color:#b91c1c}
.pri.p-ด่วน{background:#ffedd5;color:#c2410c}
.ticket.past summary{cursor:pointer;list-style:none;display:flex;gap:8px;align-items:center;
  flex-wrap:wrap;padding:4px 0}
.ticket.past summary::-webkit-details-marker{display:none}
.ticket.past summary::before{content:'▸';color:var(--muted)}
.ticket.past[open] summary::before{content:'▾'}
.ticket.past .date{color:var(--muted);font-size:.85rem;min-width:84px}
.ticket.past .st{margin-left:auto;font-size:.78rem;color:var(--muted)}
.badge-img{font-size:.74rem;background:#eef2ff;color:#4338ca;border-radius:999px;padding:1px 7px}
.ticket-actions{display:flex;gap:6px;margin-top:8px}

.photos{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;align-items:center}
.photos img{width:78px;height:78px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.upload{display:inline-flex;align-items:center;justify-content:center;width:78px;height:78px;
  border:1px dashed #cbd5e1;border-radius:8px;color:var(--muted);cursor:pointer;font-size:.85rem}

.btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 12px;
  cursor:pointer;font:inherit;font-size:.88rem}
.btn:hover{background:#f8fafc}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.sm{padding:3px 10px;font-size:.8rem}

.form{display:flex;flex-direction:column;gap:8px;margin-bottom:12px;padding:12px;
  background:#f8fafc;border-radius:10px}
.form .row{display:flex;gap:8px}
.form input,.form textarea,.form select{padding:7px 10px;border:1px solid var(--line);
  border-radius:8px;font:inherit;width:100%}

.login-box{max-width:360px;margin:60px auto;background:#fff;padding:28px;
  border-radius:14px;border:1px solid var(--line);text-align:center}

.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(80px);
  background:#111827;color:#fff;padding:9px 18px;border-radius:999px;font-size:.88rem;
  transition:.25s;opacity:0;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

@media (max-width:600px){
  main{padding:12px}
  .room-grid{grid-template-columns:repeat(auto-fill,minmax(125px,1fr))}
  table.kv th{width:42%}
}
.check{display:flex;align-items:center;gap:6px;font-size:.88rem;color:var(--muted)}
.check input{width:auto}

/* ---- หน้าจดมิเตอร์ / หน้าบิล ---- */
.page-head{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center}
.page-head .actions{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.page-head select{padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;font:inherit}
.danger{color:#b91c1c}
.ok{color:#15803d}

table.meters input[type=number]{width:92px;padding:5px 8px;border:1px solid var(--line);
  border-radius:6px;font:inherit;text-align:right}
table.meters input:focus{outline:2px solid var(--accent);border-color:transparent}
table.meters .tenant{color:var(--muted);font-size:.86rem}
table.meters tr.is-vacant{opacity:.5}
table.meters tr.row-warn input{border-color:#f87171;background:#fef2f2}
table.meters tr.row-warn .units{color:#b91c1c;font-weight:600}
.warn-box{border-color:#fde68a;background:#fffbeb}
.warn-box ul{margin:6px 0 0;padding-left:20px}

.sticky-bar{position:sticky;bottom:0;display:flex;justify-content:space-between;align-items:center;
  gap:10px;background:#fff;border-top:1px solid var(--line);padding:10px 0;margin-top:8px}

.summary{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}
.summary > div{display:flex;flex-direction:column}
.summary span{font-size:.78rem}
.summary b{font-size:1.05rem}

/* ใบบิล — พื้นขาวเสมอ เพราะต้อง save เป็นรูป/พิมพ์ */
.sheet{background:#fff;color:#111;padding:16px;border:1px solid var(--line);border-radius:8px;overflow-x:auto}
.sheet h3{margin:0 0 4px;font-size:1.1rem}
.sheet-note{margin:0 0 10px;font-size:.84rem;color:#555}
.sheet-table{width:100%;border-collapse:collapse;font-size:.84rem}
.sheet-table th{background:#f1f5f9;padding:5px 6px;border:1px solid #d7dde5;white-space:nowrap}
.sheet-table td{padding:4px 6px;border:1px solid #e5e9ef}
.sheet-table .total{font-weight:700}
.sheet-table tr.grand td{background:#f1f5f9;font-weight:700}

.slip-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}
.slip{background:#fff;color:#111;border:1px solid var(--line);border-radius:10px;padding:14px}
.slip-head{display:flex;justify-content:space-between;align-items:flex-start;
  border-bottom:2px solid #111;padding-bottom:6px;margin-bottom:8px}
.slip-room{font-size:1.3rem;font-weight:700;line-height:1.2}
.slip-sub{font-size:.82rem;color:#555}
.slip-period{font-size:.8rem;color:#555}
.slip-table{width:100%;border-collapse:collapse;font-size:.86rem}
.slip-table td{padding:3px 0;vertical-align:top}
.slip-table tr.slip-total td{border-top:1px solid #111;padding-top:6px;font-size:1.05rem;font-weight:700}
.slip-foot{margin-top:8px;font-size:.74rem;color:#666}
.slip-actions{display:flex;justify-content:center;margin-top:4px}
tr.is-paid{opacity:.6}

@media print{
  .no-print, .topbar, .slip-actions{display:none !important}
  body{background:#fff}
  .sheet{border:none;padding:0}
}

@media (max-width:600px){
  /* ตอนเดินจดมิเตอร์บนมือถือ เอาแค่ ห้อง/ครั้งก่อน/ครั้งนี้/หน่วย ก็พอ */
  .col-tenant, .col-cost{display:none}
  table.meters input[type=number]{width:100%;min-width:80px;font-size:1rem;padding:8px}
  table.meters td, table.meters th{padding:7px 4px}
  .summary{grid-template-columns:repeat(2,1fr)}
  .slip-grid{grid-template-columns:1fr}
  .page-head .actions{width:100%}
  .page-head .actions .btn, .page-head select{flex:1}
}
.upload-row{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;
  border:1px dashed #cbd5e1;border-radius:8px;color:var(--muted);cursor:pointer;font-size:.9rem}
.upload-row:hover{background:#f1f5f9}
.meter-photos{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.meter-photos img{width:34px;height:34px;object-fit:cover;border-radius:5px;border:1px solid var(--line)}
.cam{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border:1px dashed #cbd5e1;border-radius:5px;cursor:pointer;font-size:.95rem;flex:none}
.cam:hover{background:#f1f5f9;border-color:var(--accent)}

/* ---- หน้าเมนูหลัก ---- */
.hero{background:linear-gradient(135deg,#1e3a5f,#2d5280);color:#fff;border-radius:14px;
  padding:20px 24px;margin-bottom:22px}
.hero h1{margin:0;font-size:1.5rem}
.hero p{margin:4px 0 0;opacity:.8;font-size:.9rem}

.menu-group{margin-bottom:26px}
.menu-group h2{display:flex;align-items:center;gap:8px;font-size:1rem;margin:0 0 10px}
.bar{display:inline-block;width:4px;height:17px;background:var(--accent);border-radius:2px}
.bar.gray{background:#cbd5e1}

.menu-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(215px,1fr))}
.menu-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:16px;border-top:3px solid var(--line);transition:.12s;display:block}
.menu-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.09)}
.menu-card .ic{font-size:1.6rem;line-height:1;margin-bottom:8px}
.menu-card .t{font-weight:700;font-size:1.02rem}
.menu-card .s{color:var(--muted);font-size:.82rem;margin-top:2px}
.menu-card.disabled{opacity:.5;pointer-events:none}
.c-blue{border-top-color:#3b82f6} .c-green{border-top-color:#22c55e}
.c-orange{border-top-color:#f97316} .c-violet{border-top-color:#a855f7}
.c-red{border-top-color:#ef4444}

.pill{display:inline-block;margin-top:8px;margin-right:4px;font-size:.74rem;padding:2px 9px;
  border-radius:999px;background:#f1f5f9;color:#475569}
.pill.green{background:#dcfce7;color:#15803d}
.pill.red{background:#fee2e2;color:#b91c1c}
.pill.purple{background:#ede9fe;color:#6d28d9}

/* ---- ทะเบียนลูกหอ ---- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:12px}
.filter-bar input[name=q]{flex:1;min-width:190px;padding:7px 11px;border:1px solid var(--line);
  border-radius:8px;font:inherit}
.tabs{display:flex;gap:4px;background:#f1f5f9;padding:3px;border-radius:9px}
.tab{padding:5px 12px;border-radius:7px;font-size:.88rem;color:var(--muted);white-space:nowrap}
.tab.on{background:#fff;color:var(--ink);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.tab .n{font-size:.76rem;opacity:.65;margin-left:3px}
tr.is-past{opacity:.6}
tr.is-current{background:#eff6ff}

/* ---- หน้าลูกหอรายคน ---- */
.t-head{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);
  border-left:5px solid var(--accent);border-radius:12px;padding:14px 18px;margin-bottom:12px}
.t-head.past{border-left-color:#cbd5e1;opacity:.85}
.t-avatar{width:50px;height:50px;border-radius:50%;background:#dbeafe;color:#1d4ed8;flex:none;
  display:flex;align-items:center;justify-content:center;font-size:1.35rem;font-weight:700}
.t-id{flex:1;min-width:0}
.t-id h1{margin:0;font-size:1.35rem}
.t-sub{color:var(--muted);font-size:.88rem;margin-top:2px}
.t-quick{flex:none}

.t-cols{display:grid;gap:12px;grid-template-columns:1fr 1fr}
.kv-edit{display:grid;gap:9px;grid-template-columns:1fr 1fr}
.kv-edit label{display:flex;flex-direction:column;gap:3px;font-size:.8rem;color:var(--muted)}
.kv-edit label.wide{grid-column:1/-1}
.kv-edit input{padding:7px 10px;border:1px solid var(--line);border-radius:8px;font:inherit;
  color:var(--ink);font-size:.95rem}
.kv-edit button{grid-column:1/-1;justify-self:start}

.doc-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.doc{margin:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}
.doc img{width:100%;height:135px;object-fit:cover;display:block}
.doc figcaption{display:flex;justify-content:space-between;align-items:center;gap:6px;
  padding:6px 9px;font-size:.8rem;border-top:1px solid var(--line)}
.doc .del{border:none;background:none;color:var(--muted);cursor:pointer;font-size:.9rem;padding:0 2px}
.doc .del:hover{color:#b91c1c}

@media (max-width:700px){
  .t-cols, .kv-edit{grid-template-columns:1fr}
  .menu-grid{grid-template-columns:1fr 1fr}
  .menu-card{padding:13px}
  .menu-card .t{font-size:.95rem}
}

/* ---- กล่องยืนยัน ---- */
.modal-wrap{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:16px;
  animation:fade .12s ease-out}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{background:#fff;border-radius:13px;padding:20px 22px;max-width:380px;width:100%;
  box-shadow:0 18px 44px rgba(0,0,0,.26)}
.modal h3{margin:0 0 6px;font-size:1.05rem}
.modal p{margin:0 0 16px;color:#475569;font-size:.92rem;white-space:pre-line}
.modal-actions{display:flex;gap:8px;justify-content:flex-end}
.btn.danger-btn{background:#dc2626;color:#fff;border-color:#dc2626}
.btn.danger-btn:hover{background:#b91c1c}

/* ---- โหมดแก้ไข ---- */
form.locked input, form.locked select, form.locked textarea{
  background:#f8fafc;color:#475569;border-color:#eef1f5;cursor:default}
form.locked input:focus{outline:none}
.edit-actions{grid-column:1/-1;display:flex;gap:8px;margin-top:2px}
.lock-hint{grid-column:1/-1;color:var(--muted);font-size:.8rem;margin:0}
.modal-input{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;
  font-size:.82rem;color:var(--muted)}
.modal-input input{padding:8px 11px;border:1px solid var(--line);border-radius:8px;
  font:inherit;font-size:.95rem;color:var(--ink)}
.c-amber{border-top-color:#f59e0b}

/* ---- หน้ารายจ่าย ---- */
.cat-bars{margin-top:14px;display:flex;flex-direction:column;gap:5px}
.cat-row{display:grid;grid-template-columns:130px 1fr 80px;gap:9px;align-items:center;font-size:.85rem}
.cat-name{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cat-bar{background:#f1f5f9;border-radius:4px;height:9px;overflow:hidden}
.cat-bar i{display:block;height:100%;background:#f59e0b;border-radius:4px}
.cat-amt{text-align:right;font-weight:600}

.form-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));margin-bottom:14px}
.form-grid label{display:flex;flex-direction:column;gap:3px;font-size:.8rem;color:var(--muted)}
.form-grid label.wide{grid-column:1/-1}
.form-grid input, .form-grid select{padding:7px 10px;border:1px solid var(--line);border-radius:8px;
  font:inherit;font-size:.95rem;color:var(--ink);width:100%}

.alloc{border:1px solid var(--line);border-radius:10px;padding:12px;background:#f8fafc}
.alloc-head{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center}
.alloc-head h3{margin:0;font-size:.92rem}
.room-picker{display:flex;flex-wrap:wrap;gap:5px;margin:10px 0}
.fl-label{width:100%;font-size:.76rem;color:var(--muted);margin-top:4px}
.room-chip{display:inline-flex}
.room-chip input{display:none}
.room-chip span{display:inline-block;padding:4px 11px;border:1px solid var(--line);border-radius:999px;
  background:#fff;font-size:.84rem;cursor:pointer;user-select:none}
.room-chip input:checked + span{background:var(--accent);color:#fff;border-color:var(--accent)}
.alloc-table{background:#fff;border-radius:8px;margin-top:6px}
.alloc-table input, .alloc-table select{padding:5px 8px;border:1px solid var(--line);
  border-radius:6px;font:inherit;font-size:.9rem}
.alloc-table .a-amt{width:110px;text-align:right}
.alloc-table tfoot th{border-top:2px solid var(--line);padding-top:7px}

.chip-room{display:inline-flex;gap:4px;align-items:baseline;background:#eff6ff;color:#1d4ed8;
  border-radius:6px;padding:2px 7px;font-size:.78rem;margin:1px}
.chip-room b{font-weight:700}
.alloc-cell{max-width:290px}
.row-actions{display:flex;gap:4px;align-items:center;white-space:nowrap}