:root {
  --bg: #f3f1ec; --card: #ffffff; --ink: #1d2422; --mute: #66706c; --line: #e2ded5;
  --pri: #1f6f5c; --pri-ink: #ffffff; --pri-soft: #dcefe8;
  --ok: #1e7b4a; --ok-soft: #dff3e7; --warn: #a15c00; --warn-soft: #fdf0d9; --bad: #b3261e; --bad-soft: #fbe3e1;
  --r: 14px; --sh: 0 1px 2px rgba(0,0,0,.05), 0 4px 14px rgba(0,0,0,.05);
  --nav-h: 64px; --safe-b: env(safe-area-inset-bottom, 0px); --safe-t: env(safe-area-inset-top, 0px);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111615; --card: #1b2220; --ink: #e8ece9; --mute: #9aa6a1; --line: #2b3431;
    --pri: #3fae8f; --pri-ink: #06140f; --pri-soft: #183a31;
    --ok: #5fcf93; --ok-soft: #173326; --warn: #f0b45a; --warn-soft: #3a2b12; --bad: #f2867e; --bad-soft: #3d1c1a;
    --sh: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-tap-highlight-color: transparent; }
button, input, select, textarea { font: inherit; color: inherit; }
.boot { padding: 40vh 16px 0; text-align: center; color: var(--mute); }

.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 10px;
  padding: calc(10px + var(--safe-t)) 16px 10px; background: var(--bg); border-bottom: 1px solid var(--line); }
.top .t { flex: 1; min-width: 0; }
.top .t b { display: block; font-size: 17px; }
.top .t small { color: var(--mute); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.icon-btn { width: 44px; height: 44px; border: 0; border-radius: 12px; background: transparent; display: grid; place-items: center; cursor: pointer; }
.icon-btn:active { background: var(--line); }
svg.i { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

main { padding: 14px 16px calc(var(--nav-h) + var(--safe-b) + 24px); max-width: 720px; margin: 0 auto; }
main.no-nav { padding-bottom: calc(var(--safe-b) + 24px); }
h2 { font-size: 15px; text-transform: uppercase; letter-spacing: .04em; color: var(--mute); margin: 18px 2px 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--sh); padding: 14px; margin-bottom: 12px; }
.muted { color: var(--mute); }
.small { font-size: 14px; }
.row { display: flex; align-items: center; gap: 10px; }
.row.wrap { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.empty { text-align: center; color: var(--mute); padding: 32px 12px; }

.btn { min-height: 48px; padding: 0 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); cursor: pointer; font-weight: 600; display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.btn.pri { background: var(--pri); color: var(--pri-ink); border-color: var(--pri); }
.btn.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.btn.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.btn.big { width: 100%; min-height: 58px; font-size: 18px; }
.btn:disabled { opacity: .5; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { min-height: 44px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); cursor: pointer; }
.chip.on { background: var(--pri); color: var(--pri-ink); border-color: var(--pri); }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; background: var(--line); padding: 4px; border-radius: 12px; gap: 4px; }
.seg button { min-height: 46px; border: 0; border-radius: 9px; background: transparent; font-weight: 600; cursor: pointer; }
.seg button.on { background: var(--card); box-shadow: var(--sh); color: var(--pri); }
.stepper { display: flex; align-items: center; gap: 8px; }
.stepper button { width: 48px; height: 48px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); font-size: 22px; cursor: pointer; }
.stepper output { min-width: 70px; text-align: center; font-size: 20px; font-weight: 700; }

.tag { display: inline-block; font-size: 13px; font-weight: 600; padding: 2px 9px; border-radius: 999px; }
.tag.hople, .tag.nhan { background: var(--ok-soft); color: var(--ok); }
.tag.cho { background: var(--warn-soft); color: var(--warn); }
.tag.tuchoi { background: var(--bad-soft); color: var(--bad); }
.flag { color: var(--warn); font-size: 14px; }
.note-bad { color: var(--bad); font-size: 14px; }

.luot { display: flex; gap: 12px; }
.luot img { width: 72px; height: 72px; object-fit: cover; border-radius: 10px; background: var(--line); cursor: zoom-in; flex: none; }
.luot.lg img { width: 100%; height: auto; max-height: 340px; }
.luot.lg { flex-direction: column; }
.actions { display: flex; gap: 8px; margin-top: 10px; }
.actions .btn { flex: 1; }
textarea { width: 100%; min-height: 70px; border: 1px solid var(--line); border-radius: 10px; padding: 10px; background: var(--bg); }
select { min-height: 46px; border: 1px solid var(--line); border-radius: 10px; padding: 0 10px; background: var(--card); width: 100%; }
.nav-date { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.nav-date b { flex: 1; text-align: center; font-size: 18px; }

/* thanh nổi đáy */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 6; display: flex; justify-content: center;
  padding: 8px 12px calc(8px + var(--safe-b)); background: linear-gradient(transparent, var(--bg) 35%); pointer-events: none; }
.tabbar nav { pointer-events: auto; display: flex; gap: 4px; padding: 6px; border-radius: 20px; background: var(--card); border: 1px solid var(--line); box-shadow: 0 6px 24px rgba(0,0,0,.12); }
.tabbar button { position: relative; min-width: 64px; padding: 0 6px; min-height: 52px; border: 0; border-radius: 14px; background: transparent; color: var(--mute); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: 12px; font-weight: 600; cursor: pointer; }
.tabbar button.on { background: var(--pri-soft); color: var(--pri); }
.badge { position: absolute; top: 4px; right: 14px; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: var(--bad); color: #fff; font-size: 11px; line-height: 18px; }

/* đăng nhập */
.login { max-width: 380px; margin: 0 auto; padding: calc(12vh + var(--safe-t)) 20px 40px; text-align: center; }
.mt { margin-top: 18px; }
.chk { display: flex; gap: 8px; align-items: center; margin: 8px 0; }
.chk input { width: 20px; height: 20px; flex: none; }
.ma-nho { display: grid; gap: 8px; margin: 10px 0 14px; }
.ma-dong { display: flex; gap: 6px; align-items: stretch; }
.ma-dong .btn { display: flex; flex-direction: column; align-items: flex-start; text-align: left; }
.ma-dong .btn small { color: var(--ink3); font-weight: 500; letter-spacing: .06em; }
.ma-dong .icon-btn { min-width: 44px; font-size: 22px; }
.ma-o { display: flex; align-items: center; gap: 6px; }
.ma-o .ma-dau { font: 600 22px var(--mono, monospace); letter-spacing: .08em; color: var(--ink2); }
.ma-o .pin { flex: 1; min-width: 0; }
.pin.ma { letter-spacing: .12em; text-transform: uppercase; font-size: 22px; }
.login .logo { width: 72px; height: 72px; border-radius: 20px; margin: 0 auto 14px; display: block; }
/* logo công ty (thường là logo ngang, nền trong suốt): giữ tỉ lệ; nền tối thì đặt trên nền trắng cho rõ */
.login .logo.cty { width: auto; height: auto; max-width: 220px; max-height: 120px; border-radius: 0; }
img.cty { object-fit: contain; }
.logo-s.cty { width: auto; height: 36px; max-width: 64px; border-radius: 0; }
.side-brand img.cty { width: auto; height: 40px; max-width: 72px; border-radius: 0; }
.logo-cty-admin { max-width: 160px; max-height: 70px; display: block; margin: 6px 0; }
@media (prefers-color-scheme: dark) { img.cty, .logo-cty-admin { background: #fff; padding: 6px 10px; border-radius: 12px; } }
.pin { width: 100%; text-align: center; font-size: 30px; letter-spacing: .5em; padding: 12px 0 12px .5em; border-radius: 14px; border: 2px solid var(--line); background: var(--card); margin: 18px 0 10px; }
.pin:focus { outline: none; border-color: var(--pri); }
.err { color: var(--bad); min-height: 22px; font-size: 15px; }
.linkbtn { border: 0; background: none; color: var(--pri); text-decoration: underline; min-height: 44px; cursor: pointer; }

/* camera */
.cam { position: fixed; inset: 0; z-index: 20; background: #000; color: #fff; display: flex; flex-direction: column; }
.cam video, .cam img { flex: 1; min-height: 0; width: 100%; object-fit: contain; background: #000; }
.cam video.mirror { transform: scaleX(-1); }
.cam .hint { position: absolute; top: calc(10px + var(--safe-t)); left: 12px; right: 12px; text-align: center; font-size: 14px; background: rgba(0,0,0,.45); padding: 8px 10px; border-radius: 10px; }
.cam .bar { display: flex; align-items: center; justify-content: space-around; padding: 16px 12px calc(16px + var(--safe-b)); gap: 12px; }
.cam .bar .btn { background: rgba(255,255,255,.12); color: #fff; border-color: transparent; }
.cam .bar .btn.pri { background: var(--pri); }
.shutter { width: 74px; height: 74px; border-radius: 50%; border: 5px solid #fff; background: rgba(255,255,255,.25); cursor: pointer; }
.shutter:active { background: #fff; }
.gps { font-size: 13px; opacity: .85; }

.viewer { position: fixed; inset: 0; z-index: 30; background: rgba(0,0,0,.92); display: grid; place-items: center; padding: calc(64px + var(--safe-t)) 12px calc(16px + var(--safe-b)); cursor: pointer; }
.viewer-x { position: fixed; top: calc(10px + var(--safe-t)); right: 12px; width: 52px; height: 52px; border-radius: 50%; border: 0; background: rgba(255,255,255,.18); color: #fff; font-size: 26px; line-height: 1; cursor: pointer; }
.viewer-x:active { background: rgba(255,255,255,.35); }
.viewer img { max-width: 100%; max-height: 100%; border-radius: 8px; }
.toast { position: fixed; left: 50%; bottom: calc(var(--nav-h) + var(--safe-b) + 24px); transform: translateX(-50%); z-index: 40; background: var(--ink); color: var(--bg); padding: 12px 18px; border-radius: 12px; max-width: calc(100% - 32px); box-shadow: 0 6px 24px rgba(0,0,0,.2); }

.stat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
.stat div { background: var(--bg); border-radius: 10px; padding: 10px; text-align: center; }
.stat b { display: block; font-size: 24px; }
.stat span { font-size: 12px; color: var(--mute); }
.bars { display: flex; align-items: flex-end; gap: 6px; height: 64px; margin-top: 12px; }
.bars div { flex: 1; background: var(--pri-soft); border-radius: 6px 6px 2px 2px; position: relative; min-height: 4px; }
.bars div span { position: absolute; bottom: -18px; left: 0; right: 0; text-align: center; font-size: 11px; color: var(--mute); }
.day { display: flex; justify-content: space-between; gap: 8px; padding: 8px 0; border-top: 1px solid var(--line); font-size: 15px; }
details summary { list-style: none; cursor: pointer; }
details summary::-webkit-details-marker { display: none; }
.logo-s { border-radius: 10px; }

.qr-box { text-align: center; }
.qr-box img { width: min(260px, 70vw); height: auto; image-rendering: pixelated; background: #fff; padding: 8px; border-radius: 12px; }
.pin-show { font-size: 40px; font-weight: 800; letter-spacing: .25em; text-align: center; margin: 8px 0; font-variant-numeric: tabular-nums; }
.nv-meta { font-size: 14px; color: var(--mute); }
.actions.wrap { flex-wrap: wrap; }
.actions.wrap .btn { flex: 1 1 140px; }
.inp { width: 100%; min-height: 46px; border: 1px solid var(--line); border-radius: 10px; padding: 0 12px; background: var(--bg); font-size: 16px; }
.inp:focus { outline: none; border-color: var(--pri); }
.lbl { display: block; font-size: 14px; color: var(--mute); margin: 12px 0 6px; }
.sw { min-height: 44px; margin-top: 8px; cursor: pointer; }
.sw input { width: 22px; height: 22px; accent-color: var(--pri); }
a.btn { text-decoration: none; color: inherit; }
a.btn.pri { color: var(--pri-ink); }
.ppl { margin: 8px 0 0; padding: 0; list-style: none; font-size: 14px; }
.ppl li { padding: 6px 0; border-top: 1px solid var(--line); display: flex; gap: 8px; }

/* ===== Bố cục theo màn hình: mobile (<768) · iPad (768–1199) · desktop (≥1200) ===== */
.grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.grid > * { margin-bottom: 0; }
.grid > :not(.card):not(details) { grid-column: 1 / -1; }
.side-brand { display: none; }

@media (min-width: 768px) {
  :root { --side: 92px; }
  body.has-nav { padding-left: var(--side); }
  main { max-width: 1120px; padding: 20px 24px 40px; }
  main.no-nav { padding-bottom: 40px; }
  main.narrow { max-width: 640px; }
  .top { padding-left: 24px; padding-right: 24px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
  .card { padding: 16px; }
  /* thanh nổi đáy → cột icon dọc bên trái */
  .tabbar { top: 0; bottom: 0; left: 0; right: auto; width: var(--side); flex-direction: column; justify-content: flex-start; align-items: center;
    padding: calc(14px + var(--safe-t)) 8px 14px; background: var(--card); border-right: 1px solid var(--line); }
  .tabbar nav { flex-direction: column; gap: 6px; padding: 0; border: 0; box-shadow: none; background: transparent; border-radius: 0; }
  .tabbar button { width: 76px; min-width: 0; min-height: 66px; padding: 6px 4px; font-size: 12px; text-align: center; }
  .badge { right: 10px; }
  .toast { bottom: 24px; }
  .luot.lg img { max-height: 300px; }
  .login { padding-top: 14vh; }
  .login > * { max-width: 380px; margin-left: auto; margin-right: auto; }
}

@media (min-width: 1200px) {
  :root { --side: 248px; }
  main { max-width: 1480px; padding: 24px 32px 48px; }
  main.narrow { max-width: 680px; }
  .top { padding-left: 32px; padding-right: 32px; }
  .top .logo-s { display: none; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 18px; }
  /* cột icon → thanh bên có chữ */
  .tabbar { align-items: stretch; padding: calc(18px + var(--safe-t)) 14px 18px; }
  .side-brand { display: flex; align-items: center; gap: 12px; padding: 4px 8px 22px; margin-bottom: 10px; border-bottom: 1px solid var(--line); }
  .side-brand img { width: 40px; height: 40px; border-radius: 11px; }
  .side-brand b { display: block; font-size: 18px; letter-spacing: .02em; }
  .side-brand small { display: block; color: var(--mute); font-size: 13px; }
  .tabbar nav { align-items: stretch; gap: 4px; }
  .tabbar button { width: 100%; min-height: 48px; flex-direction: row; justify-content: flex-start; gap: 14px; padding: 0 14px; font-size: 15px; text-align: left; }
  .tabbar button:hover:not(.on) { background: var(--bg); color: var(--ink); }
  .badge { position: static; margin-left: auto; }
  .luot.lg img { max-height: 280px; }
  .stat b { font-size: 28px; }
}
@media (min-width: 768px) { .nav-date { max-width: 440px; } }

/* ===== Màn admin ===== */
.toolbar { margin-bottom: 12px; }
.toolbar h2 { margin: 6px 2px; }
.toolbar .inp[type="search"] { max-width: 420px; }
.card.mo { opacity: .6; }
.card.form { border-color: var(--pri); }
.card.form > b { display: block; font-size: 16px; margin-bottom: 4px; }
.fld { margin-bottom: 4px; }
.form-2 { display: grid; grid-template-columns: 1fr; gap: 0 14px; }
@media (min-width: 768px) { .form-2 { grid-template-columns: 1fr 1fr; } }
.pc-list { max-height: 360px; overflow: auto; border: 1px solid var(--line); border-radius: 10px; padding: 4px 10px; margin: 8px 0; }
.pc-list .sw { border-bottom: 1px solid var(--line); margin: 0; }
.pc-list .sw:last-child { border-bottom: 0; }
.sel-w { min-width: 220px; }
.log { padding: 4px 0; }
.log-row { display: grid; grid-template-columns: 92px 1fr; gap: 2px 12px; padding: 8px 14px; border-bottom: 1px solid var(--line); font-size: 14px; }
.log-row:last-child { border-bottom: 0; }
.log-row.nguy .log-e { color: var(--bad); }
.log-t { font-variant-numeric: tabular-nums; color: var(--mute); }
.log-e { font-weight: 600; }
.log-n { grid-column: 2; color: var(--mute); }
.log-ip { grid-column: 2; font-size: 12px; color: var(--mute); }
@media (min-width: 1200px) {
  .log-row { grid-template-columns: 110px 220px 1fr 130px; }
  .log-n, .log-ip { grid-column: auto; }
  .log-ip { text-align: right; }
}
.ppl li .btn { min-height: 38px; padding: 0 12px; }
.card.form { max-width: 860px; }
main a:not(.btn) { color: var(--pri); }