/* Giao diện chung: một cột trên điện thoại, thanh menu cuộn ngang; bảng cuộn trong khung riêng */
:root {
    --bg: #f4f6f7;
    --surface: #ffffff;
    --fg: #15232b;
    --muted: #5b6a72;
    --line: #d8e0e4;
    --accent: #0d5c63;
    --accent-soft: #e2f0f0;
    --fuel: #b86e00;
    --bad: #b3261e;
    --bad-soft: #fbe7e5;
    --ok: #2e7d4f;
    --ok-soft: #e3f3e9;
    --radius: 8px;
    color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font: 15px/1.55 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}

a { color: var(--accent); }

.topbar {
    background: var(--accent);
    color: #fff;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.topbar .brand { font-weight: 700; font-size: 17px; color: #fff; text-decoration: none; }
.topbar .who { font-size: 13px; opacity: .9; display: flex; align-items: center; gap: 10px; }
.topbar form { margin: 0; }
.topbar .topbar-link { color: #fff; font-size: 13px; }
@media (max-width: 520px) { .topbar .who span { display: none; } }
.topbar button { background: transparent; border: 1px solid rgba(255,255,255,.6); color: #fff; border-radius: 6px; padding: 4px 10px; cursor: pointer; font: inherit; font-size: 13px; }

nav.menu {
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    white-space: nowrap;
    padding: 0 8px;
}
nav.menu a {
    display: inline-block;
    padding: 11px 12px;
    color: var(--muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
}
nav.menu a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

main { max-width: 1100px; margin: 0 auto; padding: 20px 16px 60px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 24px 0 10px; }

.page-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 16px; }
.page-head h1 { margin: 0; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }

.btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: 0;
    border-radius: 6px;
    padding: 9px 16px;
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}
.btn.secondary { background: var(--surface); color: var(--accent); border: 1px solid var(--accent); }
.btn.small { padding: 4px 10px; font-size: 13px; font-weight: 500; }

.alert { border-radius: var(--radius); padding: 10px 14px; margin-bottom: 16px; }
.alert.ok { background: var(--ok-soft); color: var(--ok); }
.alert.bad { background: var(--bad-soft); color: var(--bad); }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg); color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.inactive td { color: var(--muted); }

.pill { display: inline-block; font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.pill.off { background: var(--bad-soft); color: var(--bad); }

form.stack { display: grid; gap: 14px; max-width: 560px; }
.field label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.field input[type=text], .field input[type=password], .field input[type=number], .field input[type=email], .field input[type=search], .field select, .field textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--line);
    border-radius: 6px;
    font: inherit;
    background: #fff;
    color: var(--fg);
}
.field input:focus, .field select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.field .hint { font-size: 13px; color: var(--muted); margin-top: 3px; }
.field .error { font-size: 13px; color: var(--bad); margin-top: 3px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.checks { display: flex; flex-wrap: wrap; gap: 8px 18px; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 14px; }
.filters a { text-decoration: none; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: 14px; }
.filters a.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.filters form { display: flex; gap: 8px; flex: 1; min-width: 240px; }
.filters input[type=search] { flex: 1; padding: 8px 11px; border: 1px solid var(--line); border-radius: 6px; font: inherit; }

.pager { display: flex; gap: 8px; justify-content: flex-end; margin-top: 12px; }

.grid-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.store-card h3 { margin: 0 0 8px; font-size: 16px; }
.store-card ul { margin: 0; padding-left: 18px; font-size: 14px; color: var(--muted); }

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 380px; }
.login-card h1 { text-align: center; color: var(--accent); }

.muted { color: var(--muted); }
.bad-text { color: var(--bad); font-weight: 600; }

.pill.warn { background: #fdf0d8; color: var(--fuel); }
.pill.done { background: var(--ok-soft); color: var(--ok); }
.alert.warn { background: #fdf0d8; color: var(--fuel); }
.alert ul { margin: 6px 0 0; padding-left: 20px; }

section { margin-bottom: 28px; }

/* Chỉ số vòi: mỗi vòi một thẻ, 5 ô nhập xếp lưới tự co theo màn hình */
.segment { margin-bottom: 18px; }
.segment-head { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; margin-bottom: 8px; }
.nozzle-grid { display: grid; gap: 10px; }
.nozzle-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; }
.nozzle-card.flag { border-color: var(--bad); }
.nozzle-title { font-weight: 600; margin-bottom: 8px; }
.meter-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.meter-row label { font-size: 13px; color: var(--muted); display: grid; gap: 3px; }
.meter-row input { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; font: inherit; font-size: 16px; color: var(--fg); background: #fff; }
.meter-row input[readonly] { background: var(--bg); color: var(--muted); }
.meter-result { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-top: 8px; font-size: 14px; }
.sticky-save { position: sticky; bottom: 0; background: linear-gradient(transparent, var(--bg) 35%); padding: 14px 0 8px; }

.tx-form { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 12px; }
.tx-form .tx-submit { align-self: end; }

.recon { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 760px) { .recon { grid-template-columns: minmax(0, 1fr); } }
.recon th { text-align: left; }
tr.diff-row td { background: var(--ok-soft); }
tr.diff-row.bad td { background: var(--bad-soft); color: var(--bad); }

.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.actions form { margin: 0; }
.reopen-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; }
.field input[type=date], .field input[type=datetime-local] { width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
.field input:disabled { background: var(--bg); color: var(--muted); }

tfoot td { background: var(--bg); border-top: 2px solid var(--line); }
.filters select, .filters input[type=month], .filters input[type=date] { padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; font: inherit; background: var(--surface); color: var(--fg); }
.filters.tabs { border-bottom: 1px solid var(--line); padding-bottom: 12px; }

/* Biên bản đối chiếu: chỉ hiện khi in */
.print-only { display: none; }
.print-head h1 { margin-bottom: 4px; }
.signatures { grid-template-columns: 1fr 1fr; text-align: center; margin-top: 40px; min-height: 140px; }

@media print {
    .topbar, nav.menu, .no-print, .alert { display: none !important; }
    .print-only { display: grid; }
    body { background: #fff; font-size: 12px; }
    main { max-width: none; padding: 0; }
    .table-wrap { border: 0; overflow: visible; }
    th { background: #eee !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    a { color: inherit; text-decoration: none; }
}