/* Layout: a working register — slim header with tabs, summary first, charts in a two-column grid that stacks on phones. */
:root {
  --bg: #f4f7f6; --surface: #ffffff; --surface-2: #eaf1ef; --ink: #15211d; --muted: #586862; --line: #d6e0dc;
  --accent: #0d6e5d; --accent-soft: #d4ebe5; --accent-ink: #ffffff;
  --review: #a3621c; --review-soft: #f6e6d2; --muted-bar: #9fb3ac;
  --font-display: "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", system-ui, sans-serif;
  --font-body: "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", system-ui, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", Consolas, "DejaVu Sans Mono", monospace;
  color-scheme: light;
}
/* light palette only (user, 2026-11-13): no dark theme, whatever the device prefers */
html { background: var(--bg) }
body { margin: 0 }

* { box-sizing: border-box }
[hidden] { display: none !important }
body { background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 15px; line-height: 1.5 }
.wrap { max-width: 1240px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)) }
h1, h2, h3 { font-family: var(--font-display); text-wrap: balance; margin: 0 }
h1 { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em }
h2 { font-size: 1.05rem; font-weight: 600 }
h3 { font-size: .95rem; font-weight: 600 }
.mono { font-family: var(--font-mono); font-size: .82em; letter-spacing: 0 }
.num { font-variant-numeric: tabular-nums }
.muted { color: var(--muted) }
a { color: var(--accent) }

body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--surface) }
header.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--surface); border-bottom: 1px solid var(--line) }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding-block: 10px }
.brand { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; min-width: 0 }
.brand .org { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em }
nav.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto }
nav.tabs a { text-decoration: none; color: var(--muted); padding: 6px 12px; border-radius: 6px; font-weight: 500; font-size: .9rem }
nav.tabs a:hover { color: var(--ink); background: var(--surface-2) }
nav.tabs a[aria-current="page"] { color: var(--accent-ink); background: var(--accent) }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px }

.notice { background: var(--review-soft); color: var(--ink); font-size: .85rem }
.notice .wrap { padding-block: 8px }
.notice b { color: var(--review) }

main .wrap { display: grid; gap: 20px; padding-block: 20px 32px }
section[data-view] { display: grid; gap: 20px }
.lead { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: end; justify-content: space-between }
.lead p { margin: 4px 0 0; max-width: 68ch; color: var(--muted) }

.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 8px; overflow: hidden }
.stat { background: var(--surface); padding: 14px 16px; display: grid; gap: 2px; align-content: start }
.stat .k { font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted) }
.stat .v { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2 }
.stat .s { font-size: .8rem; color: var(--muted) }
.stat.key .v { color: var(--accent) }

.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 16px; display: grid; gap: 10px; min-width: 0; align-content: start }
.panel header { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: baseline; justify-content: space-between }
.panel .hint { font-size: .8rem; color: var(--muted) }
.chart { width: 100%; min-height: 240px }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: .8rem; color: var(--muted) }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px }

label.field { display: grid; gap: 4px; font-size: .8rem; color: var(--muted) }
select, input[type="search"], input[type="number"] { font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px; min-width: 0; max-width: 100% }
select { min-width: 220px }
button { font: inherit; cursor: pointer; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: 7px 14px; font-weight: 500 }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink) }
button:disabled { opacity: .5; cursor: not-allowed }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: end }

.chip { display: inline-block; font-size: .72rem; padding: 1px 7px; border-radius: 999px; background: var(--surface-2); color: var(--muted); white-space: nowrap; font-weight: 500 }
.chip.vt { background: var(--accent-soft); color: var(--accent); font-family: var(--font-mono); font-size: .72rem }
.chip.rv { background: var(--review-soft); color: var(--review) }
.chip.ed { background: var(--accent); color: var(--accent-ink) }

.tablebox { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); max-height: 70vh }
table { border-collapse: collapse; width: 100%; font-size: .85rem }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top }
th { position: sticky; top: 0; background: var(--surface-2); font-weight: 600; font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); z-index: 1 }
td.r, th.r { text-align: right }
td .task { color: var(--muted); font-size: .78rem }
tr.edited td { background: var(--accent-soft) }
td input[type="number"] { width: 92px; text-align: right; padding: 4px 6px }

.confirm { border: 1px solid var(--accent); background: var(--accent-soft); border-radius: 8px; padding: 12px 16px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center }

details.task { background: var(--surface); border: 1px solid var(--line); border-radius: 8px }
details.task + details.task { margin-top: 8px }
details.task summary { cursor: pointer; padding: 10px 14px; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; list-style: none }
details.task summary::-webkit-details-marker { display: none }
details.task summary::before { content: "▸"; color: var(--muted); transition: transform .15s }
details.task[open] summary::before { transform: rotate(90deg) }
details.task summary .t { font-weight: 600; flex: 1 1 320px; min-width: 0 }
details.task ol { margin: 0; padding: 0 14px 12px 14px; list-style: none; display: grid; gap: 6px }
details.task li { display: grid; grid-template-columns: 7.5em minmax(0, 1fr) auto; gap: 4px 12px; align-items: baseline; padding-top: 6px; border-top: 1px solid var(--line); font-size: .85rem }
details.task li .vtn { grid-column: 2 / -1; font-size: .78rem; color: var(--muted) }
.codefmt { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; display: grid; gap: 6px; font-size: .88rem }
.codefmt .ex { font-family: var(--font-mono); font-size: .9rem }
.codefmt .ex b { color: var(--accent) }

footer.credit { border-top: 1px solid var(--line); background: var(--surface) }
footer.credit .wrap { padding-block: 18px; display: flex; flex-wrap: wrap; gap: 6px 24px; justify-content: space-between; font-size: .85rem; color: var(--muted) }
footer.credit strong { color: var(--ink) }

.howto { margin: 0; padding: 12px 16px 12px 36px; background: var(--accent-soft); border-radius: 8px; display: grid; gap: 6px; font-size: .9rem; max-width: 100% }
.howto li::marker { font-weight: 700; color: var(--accent) }
.progress { height: 8px; background: var(--surface-2); border-radius: 99px; overflow: hidden; flex: 1 1 200px; min-width: 120px }
.progress > span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .2s }
.entry { display: grid; grid-template-columns: 250px minmax(0, 1fr) 300px; gap: 16px; align-items: start }
.tasks { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 64px); z-index: 4; padding: 12px; overflow: visible }
.dot { width: 10px; height: 10px; border-radius: 50%; border: 1.5px solid var(--muted-bar); display: inline-block }
.part > summary .dot { background: linear-gradient(90deg, var(--accent) 50%, transparent 50%); border-color: var(--accent) }
.ok > summary .dot { background: var(--accent); border-color: var(--accent) }
details.tk { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; scroll-margin-top: 80px }
details.tk.cur { border-color: var(--accent) }
details.tk > summary { cursor: pointer; list-style: none; display: grid; grid-template-columns: 12px 3.2em minmax(0, 1fr) auto; gap: 10px; align-items: baseline; padding: 10px 14px; border-radius: 8px }
details.tk > summary::-webkit-details-marker { display: none }
details.tk > summary:hover { background: var(--surface-2) }
details.tk[open] > summary { background: var(--accent-soft); border-radius: 8px 8px 0 0; font-weight: 600 }
details.tk > summary .mono { color: var(--accent); font-weight: 600 }
details.tk .meta { color: var(--muted); font-size: .78rem; white-space: nowrap; font-weight: 400 }
details.tk .body { padding: 10px 14px 14px; display: grid; gap: 10px }
#entry-form { display: grid; gap: 8px; min-width: 0; align-content: start }
.fh { display: grid; gap: 4px }
fieldset.step { border: 1px solid var(--line); border-radius: 8px; background: var(--surface); padding: 6px 12px 10px; margin: 0; display: grid; gap: 6px; min-width: 0; scroll-margin-top: 90px }
fieldset.step.done { border-color: var(--accent) }
fieldset.step legend { padding: 0 6px; font-size: .78rem; color: var(--muted); font-weight: 600 }
.sname { margin: 0; font-weight: 600 }
fieldset.step dl { margin: 0; display: grid; grid-template-columns: 8.5em minmax(0, 1fr); gap: 2px 10px; font-size: .8rem }
fieldset.step dt { color: var(--muted) }
fieldset.step dd { margin: 0; min-width: 0 }
.srow { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 8px 16px; align-items: center }
.smeta { margin: 2px 0 0; font-size: .76rem; color: var(--muted); line-height: 1.45 }
.sin { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; background: var(--surface-2); border-radius: 6px; padding: 8px 10px }
.nf { display: grid; gap: 3px; min-width: 0 }
.sin output { grid-column: 1 / -1 }
.sin label { font-size: .74rem; font-weight: 600; color: var(--ink) }
.sin input { width: 100%; font-size: 1.05rem; text-align: right; border-color: var(--accent) }
.sin output { font-size: .74rem; color: var(--muted) }
.inrow { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; background: var(--surface-2); border-radius: 6px; padding: 10px 12px }
.inrow label { font-weight: 600; flex: 1 1 100% }
.inbox { display: inline-flex; align-items: center; gap: 8px }
.inrow input { width: 130px; font-size: 1.05rem; text-align: right; border-color: var(--accent) }
.inrow .unit, .inrow output { color: var(--muted); font-size: .85rem }
.warn { margin: 0; font-size: .82rem; color: var(--review); background: var(--review-soft); border-radius: 6px; padding: 6px 10px }
.acts, .nav { display: flex; gap: 8px; flex-wrap: wrap }
.acts button { font-size: .8rem; padding: 4px 10px }
.nav { justify-content: space-between; padding-top: 4px }
/* live figures after editing (right column) */
.status { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 64px); max-height: calc(100vh - 96px); overflow: auto; gap: 12px }
.kv { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px }
.kv > div { background: var(--surface-2); border-radius: 6px; padding: 8px 10px; display: grid; gap: 1px; min-width: 0 }
.kv .k { font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted) }
.kv .v { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.2 }
.kv .d { font-size: .75rem; color: var(--muted); font-variant-numeric: tabular-nums }
.kv .key .v { color: var(--accent) }
.up { color: var(--accent) !important; font-weight: 600 }
.down { color: var(--review) !important; font-weight: 600 }
.status table { font-size: .78rem }
.status th, .status td { padding: 4px 6px }
.status tr.chg td { background: var(--accent-soft) }
.edits { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px }
.edits button { width: 100%; text-align: left; font-size: .76rem; font-weight: 400; padding: 5px 8px; display: grid; gap: 1px }
.edits .mono { color: var(--muted) }
.flash, tr.flash > td { animation: flash 1.4s ease-out }
@keyframes flash { 0% { box-shadow: 0 0 0 2px var(--review) } 100% { box-shadow: 0 0 0 2px transparent } }
.was { color: var(--muted); font-size: .78rem; margin-left: 4px }
#task-hint button { font-size: .74rem; padding: 2px 8px; margin: 2px 4px 0 0 }
/* suggestions under the two search boxes */
.combo { position: relative; display: grid; gap: 4px; font-size: .8rem; color: var(--muted) }
.combo input { width: 100% }
.sugg-list { position: absolute; left: 0; top: 100%; width: max(100%, min(440px, calc(100vw - 32px))); z-index: 15; margin: 4px 0 0; padding: 4px; list-style: none; background: var(--surface); border: 1px solid var(--accent); border-radius: 8px; box-shadow: 0 8px 24px rgb(0 0 0 / .2); max-height: 320px; overflow: auto; display: grid; gap: 2px }
.sugg-list li { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 8px; align-items: baseline; padding: 6px 8px; border-radius: 6px; cursor: pointer; color: var(--ink); font-size: .8rem; line-height: 1.35 }
.sugg-list li[aria-selected="true"], .sugg-list li:hover { background: var(--accent-soft) }
.sugg-list .mono { color: var(--accent); font-weight: 600 }
.sugg-list .cnt { color: var(--muted); font-size: .72rem; white-space: nowrap }
.sugg-list .sh { grid-column: 1 / -1; font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding: 2px 4px; cursor: default; background: none !important }
.sugg-list mark { background: var(--review-soft); color: inherit; border-radius: 2px; padding: 0 1px }
fieldset.step.dim { opacity: .5 }

/* mini chat, bottom right */
.chatdock { position: fixed; z-index: 20; right: max(16px, env(safe-area-inset-right, 0px)); bottom: max(16px, env(safe-area-inset-bottom, 0px)); display: grid; justify-items: end; gap: 10px }
.chatfab { display: inline-flex; align-items: center; gap: 10px; border-radius: 999px; padding: 14px 22px; font-size: 1.05rem; background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; box-shadow: 0 6px 20px rgb(0 0 0 / .18) }
.chatfab svg { width: 22px; height: 22px }
.chatbox { width: min(480px, calc(100vw - 32px)); height: min(700px, calc(100dvh - 100px)); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 12px 36px rgb(0 0 0 / .22); display: grid; grid-template-rows: auto minmax(0, 1fr) auto auto; gap: 10px; padding: 12px; overflow: hidden }
.chatbox > header h3 { font-size: 1.1rem }
.chatbox > header { display: flex; align-items: center; justify-content: space-between; gap: 8px }
.chatbox > header button { border: 0; background: var(--surface-2); padding: 4px 10px; font-size: 1rem; line-height: 1 }
section[data-view="nhap-lieu"] { padding-bottom: 64px }
.msgs { overflow: auto; display: grid; gap: 8px; align-content: start; min-height: 0 }
.msg { padding: 10px 12px; border-radius: 10px; font-size: .9rem; max-width: 94% }
.msg.bot { background: var(--surface-2) }
.msg.me { background: var(--accent); color: var(--accent-ink); justify-self: end }
.sugg { display: flex; flex-wrap: wrap; gap: 6px }
.sugg button { font-size: .74rem; padding: 3px 9px; border-radius: 99px; font-weight: 400 }
#chat-form { display: flex; gap: 8px; align-items: end }
#chat-form textarea { flex: 1; min-width: 0; font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px; resize: vertical }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap }
@media (max-width: 1100px) { .entry { grid-template-columns: 230px minmax(0, 1fr) } .status { grid-column: 1 / -1; grid-row: 1; position: static; max-height: none } .status .vtt, .status .eh, .status .edits { display: none } .kv { grid-template-columns: repeat(4, minmax(0, 1fr)) } }
@media (max-width: 520px) { .srow { grid-template-columns: minmax(0, 1fr) } details.tk > summary { grid-template-columns: 12px 2.6em minmax(0, 1fr) } details.tk .meta { grid-column: 3 } .kv { grid-template-columns: repeat(2, minmax(0, 1fr)) } }
@media (max-width: 700px) { .entry { grid-template-columns: minmax(0, 1fr) } .tasks { position: static } .chatfab span { display: none } .chatfab { padding: 12px } }
fieldset.step.hit { outline: 2px solid var(--review); outline-offset: 2px }
details.task li.hit { background: var(--review-soft); border-radius: 4px }
@media (max-width: 900px) { .grid2 { grid-template-columns: minmax(0, 1fr) } .stats { grid-template-columns: repeat(2, minmax(0, 1fr)) } nav.tabs { margin-left: 0 } }
@media (max-width: 520px) { select { min-width: 0; width: 100% } .toolbar > * { flex: 1 1 100% } details.task li { grid-template-columns: minmax(0, 1fr) } details.task li .vtn { grid-column: 1 } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important } }

/* ---- site additions: account, login, Excel upload ---- */
.acct { display: flex; gap: 8px; align-items: center; font-size: .85rem; color: var(--muted) }
.acct b { color: var(--ink) }
.acct button { font-size: .8rem; padding: 4px 10px }
form.login { max-width: 380px; gap: 12px }
form.login input { font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; width: 100% }
a.btn, label.btn { display: inline-flex; align-items: center; font: inherit; font-weight: 500; text-decoration: none; cursor: pointer; border-radius: 6px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); padding: 7px 14px }
a.btn:hover, label.btn:hover { background: var(--surface-2) }
label.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink) }
details.excel { margin-bottom: 12px }
details.excel > summary { cursor: pointer; list-style: none; display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline }
details.excel > summary::-webkit-details-marker { display: none }
details.excel > summary h3::before { content: "▸ "; color: var(--muted) }
details.excel[open] > summary h3::before { content: "▾ " }
.excel-body { display: grid; gap: 12px; padding-top: 10px }
.up-sum { margin: 4px 0 10px; line-height: 1.6 }
.up-ai { background: var(--accent-soft); border-radius: 8px; padding: 10px 14px; font-size: .9rem; white-space: pre-wrap }
.up-ai h4 { margin: 0 0 4px; font-size: .85rem }
.up-find { margin: 0; padding-left: 18px; font-size: .82rem; display: grid; gap: 2px; max-height: 180px; overflow: auto }
.up-find .error { color: #b3261e; font-weight: 600 }
.up-find .warn { color: var(--review); background: none; padding: 0 }
.up-table { max-height: 420px }
.up-table td.ch { font-weight: 600 }
.up-table .note { color: var(--review); font-size: .75rem }
.busy { opacity: .6; pointer-events: none }
.pw-shown { background: var(--accent-soft); border-radius: 8px; padding: 10px 14px; display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center }
.pw-shown code { font-size: 1.15rem; font-weight: 700; letter-spacing: .04em; user-select: all }
.acc-table td:last-child { text-align: right; white-space: nowrap }
.acc-table button.armed { border-color: var(--review); color: var(--review) }