:root {
  --bg: #0f172a;
  --raise: #151c2c;
  --card: #1b2336;
  --ink: #f8fafc;
  --muted: #94a3b8;
  --line: #6b7c93;
  --accent: #22c55e;
  --accent-ink: #0f172a;
  --id: #22c55e;
  --warn: #f87171;
  --danger: #f87171;
  --ring: #ffffff;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  color-scheme: dark;
  font-family: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8fafc;
    --raise: #ffffff;
    --card: #ffffff;
    --ink: #0f172a;
    --muted: #334155;
    --line: #64748b;
    --accent: #22c55e;
    --accent-ink: #0f172a;
    --id: #166534;
    --warn: #991b1b;
    --danger: #b91c1c;
    --ring: #0f172a;
    --shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
    color-scheme: light;
  }

  .id-hero { text-shadow: none; }
}

*, *::before, *::after { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; }

body {
  background-color: var(--bg);
  background-image: radial-gradient(720px 280px at 18% -40px, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100dvh;
  touch-action: manipulation;
}

body::before {
  content: "";
  display: block;
  height: 4px;
  background: var(--accent);
}

::selection { background: var(--accent); color: var(--accent-ink); }

::placeholder { color: var(--muted); opacity: 1; }

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 8px 12px;
  z-index: 2;
  border-radius: 8px;
  font-weight: 600;
}

.skip:focus { top: 12px; }

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px max(16px, env(safe-area-inset-right)) max(40px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

@media (min-width: 800px) {
  .wrap { padding: 20px 32px 48px; }
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img { border-radius: 7px; display: block; }

.mark, .season {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.mark { color: var(--ink); }

.season {
  margin-left: auto;
  color: var(--muted);
}

h1 {
  font-size: clamp(1.75rem, 2.8vw, 2.25rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 12px 0 0;
  font-weight: 700;
  text-wrap: balance;
}

.lede {
  margin: 8px 0 0;
  max-width: 62ch;
  color: var(--muted);
}

.formula { color: var(--ink); font-weight: 600; }

label {
  display: block;
  margin: 16px 0 8px;
  font-size: 0.9375rem;
  font-weight: 500;
}

kbd {
  font-family: var(--mono);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 0 5px;
  font-size: 0.75rem;
  color: var(--muted);
}

.search { position: relative; }

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

.search input, textarea {
  width: 100%;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 16px 12px 44px;
  min-height: 48px;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.search:has(#clear:not([hidden])) input { padding-right: 96px; }

.search input::-webkit-search-decoration,
.search input::-webkit-search-cancel-button,
.search input::-webkit-search-results-button {
  -webkit-appearance: none;
  appearance: none;
  display: none;
}

textarea {
  display: block;
  min-height: 112px;
  padding: 12px 14px;
  resize: vertical;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.45;
}

@media (min-width: 800px) {
  .search input { font-size: 18px; }
}

.search input:focus-visible,
textarea:focus-visible,
button:focus-visible,
summary:focus-visible,
.skip:focus {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

.search input:focus-visible,
textarea:focus-visible { border-color: var(--accent); }

textarea[aria-invalid="true"],
textarea[aria-invalid="true"]:focus-visible { border-color: var(--warn); }

#clear {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 44px;
  min-width: 44px;
  padding: 6px 12px;
  cursor: pointer;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.stage {
  display: grid;
  grid-template-columns: minmax(280px, 360px) 1fr;
  gap: 20px;
  align-items: start;
  margin-top: 16px;
}

@media (max-width: 860px) {
  .stage { grid-template-columns: 1fr; }
}

#card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px 16px 8px;
  box-shadow: var(--shadow);
}

.kicker, .label {
  margin: 0;
  color: var(--id);
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.label { color: var(--muted); }

#card h2 {
  font-size: clamp(1.5rem, 2vw, 1.85rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 6px 0 0;
  font-weight: 700;
  overflow-wrap: anywhere;
  text-wrap: balance;
}

.meta { margin: 4px 0 0; color: var(--muted); }

.hero-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 10px 10px 10px 14px;
  border: 1px solid var(--line);
  border-left-width: 3px;
  border-left-color: var(--accent);
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 8%, var(--bg));
}

.id-block { min-width: 0; }

.id-label {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.id-hero {
  margin: 2px 0 0;
  font-family: var(--mono);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--id);
  line-height: 1.05;
  text-shadow: 0 0 12px color-mix(in srgb, var(--id) 45%, transparent);
}

.id-row {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-height: 44px;
  padding: 4px 0;
  border-top: 1px solid var(--line);
}

.id-row span { color: var(--muted); font-size: 0.875rem; }

.id-row strong {
  font-family: var(--mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.why { margin: 12px 0; color: var(--muted); font-size: 0.9375rem; }

.why.warn { color: var(--warn); }

.note { margin: 0 0 12px; font-size: 0.875rem; color: var(--muted); }

button { cursor: pointer; font: inherit; }

.copy, .primary, .ghost, .danger, .example, .hit, .team, .suggest button {
  color: inherit;
  transition:
    background-color 160ms var(--ease),
    border-color 160ms var(--ease),
    color 160ms var(--ease),
    transform 100ms var(--ease),
    filter 160ms var(--ease);
}

button:active:not(#clear) { transform: scale(0.98); }

#clear:active { transform: translateY(-50%) scale(0.98); }

.copy, .primary, .ghost, .danger {
  border-radius: 999px;
  min-height: 44px;
}

.copy {
  font-size: 13px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: var(--raise);
  padding: 8px 12px;
  min-width: 4.8rem;
}

.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border: 0;
  font-weight: 600;
  padding: 10px 16px;
}

.ghost, .danger {
  background: transparent;
  padding: 10px 16px;
  font-weight: 600;
}

.ghost { border: 1px solid var(--line); }

.danger {
  border: 1px solid var(--danger);
  color: var(--danger);
}

.copy:hover, .ghost:hover, .team:hover, .example:hover, .hit:hover, .suggest button:hover {
  border-color: var(--accent);
}

.team:hover, .example:hover, .hit:hover, .suggest button:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.primary:hover { filter: brightness(1.06); }

.danger:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); }

.board-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.board-head p, .hint { margin: 0; color: var(--muted); font-size: 0.875rem; }

#teams, #examples, #hit-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

#teams {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 8px;
}

.team {
  text-align: left;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 6px 8px 7px;
  min-height: 64px;
  width: 100%;
}

.team strong {
  display: block;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  font-size: 0.95rem;
  font-weight: 600;
}

.team em {
  display: block;
  font-style: normal;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.3;
}

.team .tid {
  display: block;
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--id);
}

.team[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

.team[aria-pressed="true"] em,
.team[aria-pressed="true"] .tid { color: var(--accent-ink); }

.team[aria-pressed="true"]:hover {
  background: var(--accent);
  filter: brightness(1.06);
}

.team.dim { opacity: 0.62; }

#hits { margin-top: 16px; }

#hit-list { display: grid; gap: 8px; }

.hit {
  width: 100%;
  text-align: left;
  background: var(--raise);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
  min-height: 44px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: baseline;
}

.hit b { font-weight: 600; }

.hit span {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--id);
  font-variant-numeric: tabular-nums;
}

.examples { margin-top: 16px; }

#examples {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

@media (max-width: 860px) {
  #examples { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  #examples { grid-template-columns: 1fr; }
}

.example {
  text-align: left;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 12px;
  min-height: 44px;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 8px;
  align-items: center;
}

.example[aria-pressed="true"],
.hit[aria-pressed="true"] {
  border-color: var(--accent);
  box-shadow: inset 3px 0 0 var(--accent);
}

.ex-name { font-weight: 600; }

.ex-join { grid-column: 1; color: var(--muted); font-size: 0.8125rem; }

.ex-id {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-family: var(--mono);
  color: var(--id);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.suggest {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.suggest button {
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 500;
  min-height: 44px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
}

details {
  margin-top: 32px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 4px 16px 16px;
  background: var(--card);
}

summary {
  cursor: pointer;
  font-weight: 600;
  min-height: 44px;
  padding: 10px 0;
}

summary:focus-visible { outline-offset: 4px; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

#paste-msg { min-height: 1.5em; margin: 12px 0 0; }

#paste-msg.error { color: var(--warn); }

code {
  font-family: var(--mono);
  font-size: 0.88em;
}

footer { margin-top: 24px; color: var(--muted); font-size: 0.875rem; }

footer p { margin: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}