:root {
  --paper: #ECEFF1;
  --surface: #FFFFFF;
  --sunken: #F4F6F7;
  --ink: #1B2126;
  --muted: #5C6770;
  --line: #D3D9DE;
  --chili: #B5301C;
  --chili-ink: #FFFFFF;
  --chili-soft: #F7E2DC;
  --ok: #24693F;
  --ok-soft: #DCEFE3;
  --hold: #865C08;
  --hold-soft: #F6EBCC;
  --bad: #8C2A4C;
  --bad-soft: #F4DFE7;
  --tg: #1D6696;
  --tg-soft: #E1EEF7;
  --zalo: #0068FF;
  --zalo-ink: #FFFFFF;
  --focus: #0B57D0;
  --frame: #2A3137;
  --font-body: "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #13171A; --surface: #1D2328; --sunken: #171C20; --ink: #E6EBEE; --muted: #98A4AD; --line: #2F383E;
    --chili: #E2654C; --chili-ink: #1B0F0B; --chili-soft: #2E1A15; --ok: #62BE88; --ok-soft: #1B3226;
    --hold: #DDAA45; --hold-soft: #362D1B; --bad: #E07A9E; --bad-soft: #3A2030; --tg: #6DB3E3; --tg-soft: #1C2D3A;
    --zalo: #5AA0FF; --zalo-ink: #06101F; --focus: #8AB4F8;
    --frame: #050708; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #13171A; --surface: #1D2328; --sunken: #171C20; --ink: #E6EBEE; --muted: #98A4AD; --line: #2F383E;
  --chili: #E2654C; --chili-ink: #1B0F0B; --chili-soft: #2E1A15; --ok: #62BE88; --ok-soft: #1B3226;
  --hold: #DDAA45; --hold-soft: #362D1B; --bad: #E07A9E; --bad-soft: #3A2030; --tg: #6DB3E3; --tg-soft: #1C2D3A;
  --zalo: #5AA0FF; --zalo-ink: #06101F; --focus: #8AB4F8;
  --frame: #050708; color-scheme: dark;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font-body); font-size: 15px; line-height: 1.5; }
h1 { font-size: 24px; line-height: 1.3; margin: 0; text-wrap: balance; overflow-wrap: anywhere; }
p { margin: 0; }
a { color: var(--chili); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.screen { background: var(--surface); width: 100%; max-width: 480px; min-height: 100dvh; margin: 0 auto; display: flex; flex-direction: column; }
.body { padding: 24px 20px; display: flex; flex-direction: column; gap: 20px; flex: 1; }
.brand { display: grid; justify-items: center; text-align: center; gap: 12px; padding: 32px 0 16px; }
.note { font-size: 13px; color: var(--muted); }
.centered { text-align: center; }
.how { counter-reset: step; list-style: none; margin: 0; padding: 0; display: grid; gap: 24px; }
.how li { counter-increment: step; display: flex; gap: 14px; align-items: flex-start; font-weight: 600; }
.how li::before { content: counter(step); background: var(--chili-soft); color: var(--chili); border-radius: 50%; min-width: 30px; height: 30px; display: grid; place-items: center; }
.how span { display: block; font-size: 13px; color: var(--muted); font-weight: 400; margin-top: 4px; }
.dock { display: grid; gap: 12px; padding: 16px 20px calc(16px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); background: var(--surface); }
.btn { display: flex; align-items: center; justify-content: center; width: 100%; min-height: 48px; border-radius: 12px; padding: 12px; font: inherit; font-weight: 600; line-height: 1.3; text-decoration: none; border: 1px solid transparent; cursor: pointer; text-align: center; }
.btn.zalo { background: var(--zalo); color: var(--zalo-ink); }
.btn.primary { background: var(--chili); color: var(--chili-ink); }
.btn.second { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn[aria-disabled=true] { opacity: .65; cursor: wait; }
.banner { padding: 14px; border-radius: 12px; background: var(--hold-soft); color: var(--hold); border: 1px solid var(--hold); overflow-wrap: anywhere; }
.dev-link { font-size: 13px; text-align: center; min-height: 44px; display: grid; align-items: center; }
.form { display: grid; gap: 12px; }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 12px 0; display: grid; gap: 12px; }
h2 { font-size: 18px; margin: 0; }
select, textarea { width: 100%; min-height: 48px; padding: 10px; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; }
.banner.ok { color: var(--ok); background: var(--ok-soft); border-color: var(--ok); }
.banner.info { color: var(--tg); background: var(--tg-soft); border-color: var(--tg); }
button:disabled, .htmx-request { opacity: .65; cursor: wait; }
input { min-height: 48px; padding: 10px 12px; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 8px; width: 100%; }
.bar { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--line); font-weight: 600; }
.mini { width: 34px; height: 34px; flex: none; }
@media (min-width: 600px) { .screen { min-height: 640px; margin: 32px auto; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; } }
@media (min-width: 900px) {
  .screen.screen--admin { max-width: 960px; }
  .screen.screen--admin .body { padding: 32px; gap: 24px; }
  .screen.screen--admin .card { padding: 20px; }
}

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.picker { display: block; cursor: pointer; }
.picker:focus-within .btn { outline: 3px solid var(--focus); outline-offset: 3px; }
.upload { display: grid; gap: 12px; }
.preview { width: 100%; max-height: 360px; object-fit: contain; border: 1px solid var(--line); border-radius: 12px; background: var(--sunken); }
progress { width: 100%; height: 10px; accent-color: var(--chili); }
.tracker { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.tracker li { display: flex; gap: 10px; align-items: center; color: var(--muted); }
.tracker li b { min-width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--sunken); border: 1px solid var(--line); font-size: 13px; }
.tracker li.done { color: var(--ok); } .tracker li.done b { background: var(--ok-soft); border-color: var(--ok); }
.tracker li.now { color: var(--ink); font-weight: 600; } .tracker li.now b { background: var(--chili-soft); border-color: var(--chili); color: var(--chili); }
.tracker li.stopped { color: var(--bad); }
.facts { margin: 0; display: grid; gap: 8px; } .facts div { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
.facts dt { color: var(--muted); } .facts dd { margin: 0; font-weight: 600; text-align: right; }
.row-link { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; min-height: 48px; }
.row-link > span:first-child { display: grid; gap: 2px; }
.chip { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; white-space: nowrap; border: 1px solid currentColor; }
.chip.ok { color: var(--ok); background: var(--ok-soft); } .chip.hold { color: var(--hold); background: var(--hold-soft); }
.chip.bad { color: var(--bad); background: var(--bad-soft); } .chip.info { color: var(--tg); background: var(--tg-soft); }
.banner.bad { color: var(--bad); background: var(--bad-soft); border-color: var(--bad); }
.banner b { display: block; margin-bottom: 4px; }
.empty { text-align: center; display: grid; gap: 8px; padding: 32px 0; }
.step { display: grid; gap: 12px; } .step h2 { display: flex; gap: 10px; align-items: center; }
.num { min-width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--chili-soft); color: var(--chili); font-size: 14px; }
.bar a { color: var(--ink); text-decoration: none; font-size: 22px; min-width: 44px; min-height: 44px; display: grid; place-items: center; }
.tabs { display: flex; gap: 8px; } .tabs a { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); color: var(--ink); text-decoration: none; min-height: 40px; display: grid; place-items: center; }
.tabs a[aria-current=page] { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.age { font-size: 13px; color: var(--muted); white-space: nowrap; } .age.late { color: var(--hold); font-weight: 700; }
.field-error { color: var(--bad); font-size: 13px; font-weight: 600; margin-top: -6px; }
.wallet { display: grid; gap: 4px; padding: 20px; border-radius: 16px; background: var(--chili-soft); }
.balance { font-size: 18px; } .balance b { font-size: 40px; line-height: 1.1; color: var(--chili); }
.gain { color: var(--ok); font-weight: 700; } .loss { color: var(--muted); font-weight: 700; }
.qr { display: grid; place-items: center; } .qr svg { width: 220px; height: 220px; background: #fff; padding: 8px; border-radius: 12px; }
.code { font-family: var(--font-mono); font-size: 30px; font-weight: 700; letter-spacing: 2px; text-align: center; } .code.big { font-size: 38px; }
.amount { font-size: 24px; font-weight: 700; text-align: center; } .amount.huge { font-size: 46px; color: var(--chili); }
.live { display: flex; gap: 10px; align-items: center; justify-content: center; flex-wrap: wrap; font-size: 14px; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: var(--ok); animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .3; } } @media (prefers-reduced-motion: reduce) { .dot { animation: none; } }
.options { border: 0; margin: 0; padding: 0; display: grid; gap: 10px; }
.option { display: flex; gap: 12px; align-items: center; border: 1px solid var(--line); border-radius: 12px; padding: 14px; cursor: pointer; }
.option input { width: 20px; min-height: 20px; } .option .picked { margin-left: auto; font-size: 12px; font-weight: 700; display: none; }
.option:has(input:checked) { border: 2px solid var(--chili); } .option:has(input:checked) .picked { display: inline; color: var(--chili); }
.reject { margin-top: 24px; font-size: 14px; } .reject summary { cursor: pointer; color: var(--muted); min-height: 44px; display: flex; align-items: center; }