:root {
  color-scheme: light dark;
  --bg: #fff; --surface: #f4f4f4; --idle: #e6e6e6;
  --fg: #1b1b1b; --muted: #595959;
  --line: #d9d9d9; --control: #767676;
  --accent: #006a4e; --accent-strong: #00523c; --on-accent: #fff; --accent-soft: #e3f1ec;
  --danger: #b3261e; --danger-soft: #fdecea;
  --focus: #0b57d0; --track: #e3e3e3; --tag: #e7eeeb;
  --container: 64rem; --tap: 2.75rem;
}
:root[data-theme="light"] { color-scheme: light; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121212; --surface: #1c1c1c; --idle: #262626;
    --fg: #ececec; --muted: #a3a3a3;
    --line: #333; --control: #8a8a8a;
    --accent: #4cc38a; --accent-strong: #79d6a8; --on-accent: #06251a; --accent-soft: #17352a;
    --danger: #ff8a80; --danger-soft: #3b1d1b;
    --focus: #8ab4f8; --track: #2c2c2c; --tag: #243029;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121212; --surface: #1c1c1c; --idle: #262626;
  --fg: #ececec; --muted: #a3a3a3;
  --line: #333; --control: #8a8a8a;
  --accent: #4cc38a; --accent-strong: #79d6a8; --on-accent: #06251a; --accent-soft: #17352a;
  --danger: #ff8a80; --danger-soft: #3b1d1b;
  --focus: #8ab4f8; --track: #2c2c2c; --tag: #243029;
}

/* base */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 3rem; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, sans-serif; }
:lang(bn) { line-height: 1.7; }
h1, h2, h3 { line-height: 1.25; margin: 0; text-wrap: balance; }
.lede, .hint { text-wrap: pretty; }
::placeholder { color: var(--muted); opacity: 1; }
h2, h3 { font-size: 18px; }
a { color: var(--accent-strong); text-decoration: underline; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 1rem; top: -4rem; background: var(--bg); padding: .5rem 1rem; z-index: 10; }
.skip:focus { top: .5rem; }
.hint { color: var(--muted); font-size: 13px; margin: 0; }
.wrap { max-width: var(--container); margin: 0 auto; padding-inline: 1rem; }
[hidden] { display: none; }

/* controls */
input, select, textarea, .btn {
  font: inherit; color: var(--fg); background: var(--bg);
  border: 1px solid var(--control); border-radius: 4px; padding: .5rem .75rem; min-height: var(--tap);
}
select {
  appearance: none; padding-inline-end: 2.25rem; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position: calc(100% - 1.15rem) 50%, calc(100% - .8rem) 50%;
  background-size: .35rem .35rem; background-repeat: no-repeat;
}
textarea { width: 100%; resize: vertical; }
input:user-invalid, select:user-invalid { border-color: var(--danger); }
.btn { display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font-weight: 600; text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-danger { background: var(--bg); border-color: var(--danger); color: var(--danger); }
[aria-disabled="true"] { opacity: .65; cursor: progress; }

/* header, footer */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem; padding-block: .75rem; }
.brand { font-size: 24px; }
.header-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; }
.theme-switch { display: inline-flex; border: 1px solid var(--control); border-radius: 4px; overflow: hidden; }
.theme-switch button { display: inline-flex; align-items: center; justify-content: center; font: inherit; color: var(--fg); background: var(--bg); border: 0; padding: .5rem .75rem; min-height: var(--tap); min-width: var(--tap); cursor: pointer; }
.theme-switch button + button { border-inline-start: 1px solid var(--control); }
.theme-switch button[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); font-weight: 600; }
.site-footer { border-top: 1px solid var(--line); margin-top: 2.5rem; padding-block: 1.5rem; color: var(--muted); font-size: 14px; }
.site-footer p { margin: 0; }
.faq { margin-top: 2.5rem; }
.faq h2 { font-size: 20px; margin-bottom: .5rem; }
.faq details { border-top: 1px solid var(--line); padding-block: .5rem; }
.faq summary { cursor: pointer; font-weight: 600; padding-block: .6rem; }
.faq p { margin: 0 0 .5rem; color: var(--muted); }

/* summary */
main { padding-block: 1.5rem; outline: none; }
.lede { margin: 0 0 1rem; max-width: 42rem; color: var(--muted); }
.stats { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-wrap: wrap; gap: 1rem 2.5rem; color: var(--muted); font-size: 14px; }
.stats strong { display: block; font-size: 28px; line-height: 1.25; font-weight: 700; color: var(--accent-strong); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.stats .stat-text strong { font-size: 18px; line-height: 1.4; margin-block: .35rem; }
.period { display: flex; align-items: center; gap: .5rem; margin-bottom: 1rem; font-size: 14px; }

/* tabs and panel */
.tabs { display: flex; gap: .25rem; }
.tabs [role="tab"] {
  font: inherit; min-height: var(--tap); padding: 0 1.25rem; cursor: pointer; color: var(--muted);
  background: var(--idle); border: 1px solid var(--line); border-bottom: 0; border-radius: 4px 4px 0 0;
}
.tabs [aria-selected="true"] { background: var(--surface); color: var(--fg); font-weight: 600; border-top: 3px solid var(--accent); }
.panel { background: var(--surface); border: 1px solid var(--line); padding: 1rem; }
#count { margin: 0 0 .75rem; font-size: 14px; color: var(--muted); }
[role="tabpanel"] > input[type="search"] { width: 100%; max-width: 24rem; margin-bottom: 1rem; }

/* table */
.reports { width: 100%; border-collapse: collapse; background: var(--bg); font-size: 14px; line-height: 1.4; }
.reports th { position: sticky; top: 0; background: var(--bg); text-align: left; font-size: 13px; font-weight: 600; color: var(--muted); padding: .5rem; border-bottom: 2px solid var(--line); }
.reports td { padding: .4rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; overflow-wrap: anywhere; }
.reports .num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.reports time, .reports td:nth-child(6) { white-space: nowrap; }
.reports tr.report:hover td { background: var(--accent-soft); }
.reports .company { font-weight: 600; }
.reports .company em { font-weight: 400; color: var(--muted); }
.reports td.more, .reports th.more { width: var(--tap); padding: 0; }
.detail td { background: var(--surface); }
.detail dl { display: grid; grid-template-columns: auto 1fr; gap: .25rem 1rem; margin: 0; padding: .25rem 0; }
.detail dt { color: var(--muted); }
.detail dd { margin: 0; }
.tag { display: inline-block; background: var(--tag); color: var(--fg); border-radius: 999px; padding: 0 .75rem; font-size: 13px; }
.toggle { width: var(--tap); height: var(--tap); background: none; border: 0; cursor: pointer; color: var(--fg); }
.toggle::before { content: ""; display: block; width: .5rem; height: .5rem; margin: auto; border: solid currentColor; border-width: 0 2px 2px 0; transform: rotate(45deg); transition: transform .15s; }
.toggle[aria-expanded="true"]::before { transform: rotate(225deg); }
.skeleton span, .skeleton-block { display: block; height: 1rem; background: var(--idle); border-radius: 4px; animation: pulse 1.2s ease-in-out infinite; }
.skeleton-block { height: 6rem; }
.skeleton td { padding: .7rem .5rem; }
@keyframes pulse { 50% { opacity: .5; } }
.state:not([hidden]) { background: var(--bg); padding: 2rem 1rem; text-align: center; display: grid; justify-items: center; gap: .75rem; }
.state p { margin: 0; }
.state p[role="alert"] { color: var(--danger); font-weight: 600; }

/* charts */
.panel-charts:not([hidden]) { display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 1rem; min-width: 0; }
.card-wide { grid-column: 1 / -1; }
.card .hint { margin: .25rem 0 .75rem; }
.bars, .cols { list-style: none; margin: 0; padding: 0; }
.bars li { display: grid; grid-template-columns: minmax(6rem, 12rem) 1fr auto; gap: .5rem; align-items: center; padding: .15rem 0; font-size: 14px; }
.show-more { margin-top: .5rem; font-size: 14px; min-height: 0; padding: .25rem .75rem; }
.bar-label { overflow-wrap: anywhere; }
.bar-track { height: .75rem; background: var(--track); border-radius: 2px; }
.bar-track span { display: block; height: 100%; width: calc(var(--v) / var(--max) * 100%); background: var(--accent); border-radius: 2px; }
.bar-value { font-variant-numeric: tabular-nums; color: var(--muted); min-width: 2ch; text-align: right; }
.cols { display: flex; gap: .25rem; align-items: flex-end; }
.cols li { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; font-size: 13px; }
.col-value { order: 1; color: var(--muted); font-variant-numeric: tabular-nums; }
.col-bar { order: 2; width: 100%; max-width: 2.5rem; height: calc(var(--v) / var(--max) * 8rem); min-height: 2px; background: var(--accent); border-radius: 2px 2px 0 0; }
.col-label { order: 3; color: var(--muted); margin-top: .25rem; white-space: nowrap; }

/* dialog */
dialog { width: min(40rem, calc(100vw - 2rem)); max-height: calc(100dvh - 2rem); overflow: auto; padding: 0 1.5rem 1.5rem; background: var(--bg); color: var(--fg); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 16px 48px rgb(0 0 0 / .28); }
dialog::backdrop { background: rgb(0 0 0 / .5); }
html:has(dialog[open]) { overflow: hidden; }
.dialog-head { position: sticky; top: 0; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: 1rem; background: var(--bg); padding: 1rem 0 .75rem; }
.dialog-head h2 { font-size: 24px; }
dialog h2:focus { outline: none; }
form { display: grid; gap: 1rem; }
fieldset { margin: 0; padding: 0; border: 0; display: grid; gap: .75rem 1rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
legend { grid-column: 1 / -1; padding: 0; font-weight: 700; font-size: 18px; margin-bottom: .5rem; }
.field { display: grid; gap: .25rem; align-content: start; min-width: 0; }
.field label { font-size: 14px; font-weight: 600; }
.field input, .field select { width: 100%; }
.full { grid-column: 1 / -1; }
.hp { position: absolute; left: -9999px; }
@supports selector(:has(*)) {
  .other { display: none; }
  .field:has(option[value="Other"]:checked) .other { display: block; }
}
.msg { margin: 0; border-radius: 4px; }
.msg:not(:empty) { padding: .5rem .75rem; border: 1px solid; }
.msg-ok:not(:empty) { background: var(--accent-soft); color: var(--accent-strong); border-color: var(--accent); }
.msg-error:not(:empty) { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }

/* admin */
.admin { max-width: 48rem; margin: 0 auto; padding: 1.5rem 1rem; }
.admin h1 { margin-bottom: .25rem; }
.admin h2 { margin: 1.5rem 0 .75rem; }
.admin .muted { color: var(--muted); margin: 0; }
.admin .card { margin-bottom: .75rem; display: grid; grid-template-columns: minmax(0, 1fr); overflow-wrap: anywhere; gap: .5rem; }
.admin .card.pending { border-left: 3px solid var(--accent); }
.admin .card.flagged { border-left-color: var(--danger); }
.admin .flag { background: var(--danger-soft); color: var(--danger); border: 1px solid var(--danger); border-radius: 4px; padding: .5rem .75rem; }
.admin > .flag { margin: .75rem 0; }
.admin .card h3 time { font-weight: 400; color: var(--muted); font-size: 14px; margin-left: .5rem; }
.admin .card p { margin: 0; }
.admin .card p:empty { display: none; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.actions .btn-danger { margin-inline-start: auto; }

@media (max-width: 48em) {
  .site-header .wrap > .btn { min-height: var(--tap); }
  .header-actions { width: 100%; }
  .header-actions .btn { flex: 1 1 auto; }
  .stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats .stat-text { grid-column: 1 / -1; }
  .period { display: grid; }
  .period select { width: 100%; }
  .reports:not([hidden]), .reports tbody, .reports tr, .reports td { display: block; }
  .reports thead { position: absolute; clip: rect(0 0 0 0); width: 1px; height: 1px; overflow: hidden; }
  .reports tr.report { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px .75rem; padding: .75rem .5rem 0; border-top: 1px solid var(--line); }
  .reports tr.skeleton { display: block; }
  .reports td { border: 0; padding: 0; }
  .reports td:nth-child(n+3) { grid-column: 1 / -1; }
  .reports td.num { text-align: left; }
  .reports td[data-label]::before { content: attr(data-label) ": "; color: var(--muted); }
  .reports td:empty, .reports td.more { display: none; }
  .reports tr.detail { display: block; padding: 0 .5rem .75rem; }
  .reports tr.detail td { background: none; }
  .panel-charts:not([hidden]) { grid-template-columns: minmax(0, 1fr); }
  .col-label { writing-mode: vertical-rl; transform: rotate(180deg); }
  dialog { width: 100vw; max-width: none; height: 100dvh; max-height: none; border-radius: 0; border: 0; padding-inline: 1rem; }
  .actions .btn { flex: 1 1 100%; }
  .actions .btn-danger { margin-inline-start: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, ::before { animation: none !important; transition: none !important; }
}
@media (forced-colors: active) {
  .bar-track span, .col-bar { background: CanvasText; }
}