:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --ink: #161a21;
  --muted: #586172;
  --line: #dce0e6;
  --accent: #2a4fa8;
  --accent-ink: #ffffff;
  --accent-soft: #e9eefa;
  --warn: #6f4700;
  --warn-bg: #fcefd2;
  --alert: #962a2a;
  --alert-bg: #fbe5e5;
  --radius: 12px;
  --radius-sm: 8px;
  color-scheme: light dark;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --ink: #e7e9ee;
    --muted: #a3abb8;
    --line: #2c313b;
    --accent: #93b0f2;
    --accent-ink: #0f1115;
    --accent-soft: #1d2640;
    --warn: #f1cf86;
    --warn-bg: #362a12;
    --alert: #f2aaaa;
    --alert-bg: #3a1c1c;
  }
}

* { box-sizing: border-box; }
body { margin: 0; font-size: 1rem; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 0.6rem; }
h1 { font-size: 1.6rem; letter-spacing: -0.01em; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 0.75rem; }
a { color: var(--accent); }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.88em; background: var(--accent-soft); padding: 0.05em 0.3em; border-radius: 4px; overflow-wrap: anywhere; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 1rem; }
.top { padding: 1.75rem 0 1.25rem; }
.lead { font-size: 1.05rem; max-width: 62ch; }
.privacy { color: var(--muted); margin: 0; }
.hint { color: var(--muted); font-size: 0.92rem; font-weight: normal; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--surface); color: var(--ink); padding: 0.6rem 0.8rem; border-radius: var(--radius-sm); z-index: 10; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.print-only { display: none; }
[hidden] { display: none !important; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; margin-bottom: 1rem; min-width: 0; }
.head-row { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; align-items: center; justify-content: space-between; margin-bottom: 0.5rem; }
.head-row h2 { margin: 0; }

.pair { display: grid; gap: 1.25rem; grid-template-columns: minmax(0, 1fr); margin-bottom: 1rem; }
.field { display: grid; gap: 0.35rem; align-content: start; min-width: 0; }
.field label:not(.btn) { font-weight: 600; }
.field .hint { margin: 0; }
.settings { display: grid; gap: 1rem; align-content: start; }
.field-inline { grid-auto-flow: column; align-items: center; justify-content: start; gap: 0.6rem; }

input[type="number"], select, textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--ink); background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.55rem 0.7rem; min-height: 44px;
}
textarea { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; resize: vertical; line-height: 1.45; }
select { width: auto; max-width: 100%; }
.rubric input { max-width: 7rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0.55rem 1rem;
  border-radius: var(--radius-sm); border: 1px solid var(--accent); background: transparent; color: var(--accent);
  font: inherit; font-weight: 600; cursor: pointer; text-align: center; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn:hover { background: var(--accent-soft); }
.btn-primary:hover { background: var(--accent); filter: brightness(1.1); }
.btn:active { transform: translateY(1px); }
.btn-file { justify-self: start; }
.btn-link { min-height: 44px; padding: 0.4rem 0.6rem; border: 1px solid var(--line); color: var(--ink); font-weight: 500; font-size: 0.92rem; }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible, a:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 2px;
}
input[type="file"]:focus-visible + .btn { outline: 3px solid var(--accent); outline-offset: 2px; }

.notice { margin-top: 1rem; padding: 0.75rem 0.9rem; border-radius: var(--radius-sm); background: var(--warn-bg); color: var(--warn); }
.notice ul { margin: 0.5rem 0 0; padding-left: 1.2rem; }
.notice-alert { background: var(--alert-bg); color: var(--alert); }
summary { cursor: pointer; min-height: 32px; font-weight: 600; }

.summary { font-size: 1.02rem; }
.toolbar { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; justify-content: space-between; margin: 1rem 0; }
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }

table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 0.55rem 0.5rem; border-bottom: 1px solid var(--line); vertical-align: top; overflow-wrap: anywhere; }
th { font-weight: 600; color: var(--muted); font-size: 0.88rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-scroll { overflow-x: auto; }
.rubric td, .rubric th { vertical-align: middle; }
textarea[wrap="off"] { overflow-x: auto; white-space: pre; }

.results .rank { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.results .name { font-weight: 600; display: block; }
.sub { color: var(--muted); font-size: 0.88rem; display: block; }
.score { font-weight: 700; }
.why-row > td { background: var(--bg); padding: 0.9rem; }
.why-row table { font-size: 0.9rem; background: var(--surface); border-radius: var(--radius-sm); }
.why-row p, .why-row ul { margin: 0.6rem 0 0; }
.why-row ul { padding-left: 1.2rem; }

.badges { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.badge { display: inline-block; font-size: 0.8rem; font-weight: 600; padding: 0.12rem 0.5rem; border-radius: 999px; border: 1px solid var(--line); white-space: nowrap; color: var(--ink); }
.badge-warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.badge-alert { background: var(--alert-bg); color: var(--alert); border-color: transparent; }
.badge-accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }

.winners { display: grid; gap: 1rem; grid-template-columns: minmax(0, 1fr); }
.winners h3 { margin-bottom: 0.4rem; }
.winners ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.35rem; }
.winners li { display: flex; gap: 0.6rem; align-items: baseline; }
.winners .place { font-weight: 700; min-width: 2.2rem; font-variant-numeric: tabular-nums; }

.cover { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.cover li { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0.75rem 0.9rem; }
.cover p { margin: 0.25rem 0 0; }
.steps { padding-left: 1.3rem; max-width: 72ch; }
.steps li { margin-bottom: 0.4rem; }
.foot { color: var(--muted); font-size: 0.9rem; padding-bottom: 2rem; }

@media (max-width: 719px) {
  .stack > thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .stack, .stack > tbody { display: block; width: 100%; }
  .stack > tbody > tr { display: flex; flex-wrap: wrap; gap: 0.15rem 1rem; position: relative; border-bottom: 1px solid var(--line); padding: 0.75rem 0 0.75rem 2.6rem; }
  .stack > tbody > tr > td, .stack > tbody > tr > th { display: block; border: 0; padding: 0; text-align: left; flex: 0 0 auto; }
  .stack > tbody > tr > td:empty, .stack > tbody > tr > td:has(> .no-flags) { display: none; }
  .stack > tbody > tr > td[data-label]::before { content: attr(data-label) " "; color: var(--muted); font-weight: 400; }
  .stack .full, .stack > tbody > tr > th { flex-basis: 100%; }
  .results .rank { position: absolute; left: 0; top: 0.75rem; font-size: 1.1rem; }
  .results .rank::before { content: none !important; }
  .results .why-cell { flex-basis: 100%; padding-top: 0.4rem; }
  #judges > tbody > tr { padding-left: 0; }
  .stack > tbody > tr.why-row { display: block; border: 0; padding: 0 0 0.75rem; }
  .stack > tbody > tr.why-row > td { padding: 0.75rem; border-radius: var(--radius-sm); }
  .why-row table td, .why-row table th { white-space: nowrap; }
}

@media (min-width: 720px) {
  h1 { font-size: 2rem; }
  .card { padding: 1.25rem 1.5rem; }
  .pair { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
  .winners { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
  .cover { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: no-preference) {
  .btn { transition: background-color 0.15s ease, filter 0.15s ease; }
}

@media print {
  @page { margin: 14mm; }
  #results:not([hidden]) { display: flex; flex-direction: column; }
  #winners-card { order: -1; }
  :root { --bg: #fff; --surface: #fff; --ink: #000; --muted: #333; --line: #999; --accent: #000; --accent-soft: #fff; --warn: #000; --warn-bg: #fff; --alert: #000; --alert-bg: #fff; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .no-print, .skip, .privacy, .lead, .toolbar, .why-row, .why-cell, #issues, .results + .hint { display: none !important; }
  .print-only { display: block; }
  .card { border: 0; padding: 0; margin: 0 0 1.25rem; }
  .wrap { max-width: none; padding: 0; }
  .top { padding: 0 0 0.5rem; }
  .badge { border: 1px solid #000; background: #fff; color: #000; }
  .stack > thead { position: static; width: auto; height: auto; clip: auto; overflow: visible; display: table-header-group; }
  .stack { display: table; }
  .stack > tbody { display: table-row-group; }
  .stack > tbody > tr { display: table-row; padding: 0; }
  .stack > tbody > tr > td, .stack > tbody > tr > th { display: table-cell; width: auto; border-bottom: 1px solid #999; padding: 0.3rem 0.4rem; }
  .results .rank { position: static; }
  .stack > tbody > tr > td[data-label]::before { content: none; }
  tr { break-inside: avoid; }
  .winners { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  a { color: #000; text-decoration: none; }
}