:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2230;
  --line: #2a3340;
  --txt: #e6edf3;
  --muted: #9aa7b4;
  --accent: #2dd4bf; /* teal */
  --accent-2: #38bdf8; /* sky */
  --win: #34d399;
  --warn: #f59e0b;
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
} /* beat .drop{flex}/.again{block} display rules */
html,
body {
  margin: 0;
}
body {
  background: radial-gradient(1200px 600px at 50% -200px, #16304a55, transparent), var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.wrap {
  width: min(960px, 92vw);
  margin-inline: auto;
}

/* Header / footer */
header.site {
  padding: 48px 0 8px;
  text-align: center;
}
header.site h1 {
  font-size: clamp(2rem, 6vw, 3rem);
  margin: 0;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tag {
  color: var(--muted);
  max-width: 46ch;
  margin: 12px auto 0;
  font-size: 1.02rem;
}
.tag b {
  color: var(--txt);
  font-weight: 600;
}
footer.site {
  margin-top: auto;
  padding: 40px 0;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}
footer.site a,
.winner a {
  color: var(--accent-2);
  text-decoration: none;
}
footer.site a:hover {
  text-decoration: underline;
}

main.wrap {
  padding: 24px 0 8px;
  flex: 1;
}

/* Drop zone */
.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 220px;
  padding: 32px;
  cursor: pointer;
  border: 1.5px dashed var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff05, transparent);
  transition:
    border-color 0.18s,
    background 0.18s,
    transform 0.18s;
}
.drop:hover,
.drop:focus-visible {
  border-color: var(--accent);
  background: #2dd4bf0d;
  outline: none;
}
.drop.drag {
  border-color: var(--accent);
  background: #2dd4bf1a;
  transform: scale(1.01);
}
.drop .ic {
  width: 40px;
  height: 40px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: 6px;
}
.drop-main {
  font-size: 1.15rem;
  font-weight: 600;
}
.drop-sub {
  color: var(--muted);
  font-size: 0.9rem;
}

.sample {
  display: block;
  margin: 14px auto 0;
  font: inherit;
  font-size: 0.92rem;
  color: var(--accent-2);
  background: none;
  border: 0;
  cursor: pointer;
  padding: 6px 8px;
}
.sample:hover {
  text-decoration: underline;
}

.status {
  text-align: center;
  color: var(--muted);
  margin: 16px 0;
  font-variant-numeric: tabular-nums;
}
.status.err {
  color: var(--warn);
}

/* Spinner — transform-based so it keeps animating on the compositor */
.spin {
  display: inline-block;
  width: 14px;
  height: 14px;
  vertical-align: -2px;
  margin-right: 8px;
  border: 2px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .spin {
    animation-duration: 1.6s;
  }
}

/* Meta bar */
.meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 4px 0 18px;
}
.m-name {
  font-weight: 600;
  margin-right: 2px;
  word-break: break-all;
}
.pill {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 10px;
}
.seg {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
}
.seg-label {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 8px;
}
.seg-btn {
  font: inherit;
  font-size: 0.82rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 999px;
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.seg-btn:hover {
  color: var(--txt);
}
.seg-btn.on {
  background: var(--accent);
  color: #06231f;
  font-weight: 600;
}

/* Result cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition:
    border-color 0.2s,
    box-shadow 0.2s,
    transform 0.2s;
}
.card.winner-card {
  border-color: var(--win);
  box-shadow:
    0 0 0 1px var(--win),
    0 8px 30px #34d39922;
}
.card-h {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.fmt {
  font-weight: 700;
  letter-spacing: 0.02em;
}
.badge {
  font-size: 0.72rem;
  color: var(--muted);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 9px;
}
.badge.win {
  color: #06231f;
  background: var(--win);
  border-color: var(--win);
  font-weight: 700;
}
.size {
  font-size: 1.7rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.sub {
  color: var(--muted);
  font-size: 0.88rem;
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}
.sub .down {
  color: var(--win);
  font-weight: 600;
}
.sub .up {
  color: var(--warn);
  font-weight: 600;
}
.dl {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-2);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
  transition:
    border-color 0.15s,
    background 0.15s;
}
.dl:hover,
.dl:focus-visible {
  border-color: var(--accent-2);
  background: #38bdf812;
  outline: none;
}

/* Comparison slider */
.compare {
  margin: 22px 0 6px;
}
.cmp-stage {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  user-select: none;
  line-height: 0;
  background: #000;
}
.cmp-stage img {
  display: block;
  width: 100%;
  height: auto;
}
.cmp-clip {
  position: absolute;
  inset: 0;
  width: 50%;
  overflow: hidden;
  border-right: 2px solid var(--accent);
}
.cmp-clip img {
  width: var(--stage-w, 100%);
  max-width: none;
}
.cmp-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 36px;
  transform: translateX(-50%);
  cursor: ew-resize;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cmp-handle::before {
  content: '⟺';
  color: #06231f;
  background: var(--accent);
  border-radius: 999px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  box-shadow: 0 2px 8px #0008;
}
.cmp-tag {
  position: absolute;
  bottom: 10px;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--txt);
  background: #000a;
  padding: 3px 8px;
  border-radius: 6px;
  line-height: 1.2;
}
.cmp-tag-l {
  left: 10px;
}
.cmp-tag-r {
  right: 10px;
}
.compare figcaption {
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  margin-top: 10px;
}

/* Per-image charts */
.charts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 22px 0 4px;
}
.chart {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px 10px;
}
.chart figcaption {
  color: var(--muted);
  font-size: 0.86rem;
  margin-bottom: 8px;
}
.chart-svg svg {
  width: 100%;
  height: auto;
  display: block;
}
@media (max-width: 700px) {
  .charts {
    grid-template-columns: 1fr;
  }
}

.winner {
  text-align: center;
  font-size: 1.05rem;
  margin: 18px 0 4px;
}
.winner b {
  color: var(--win);
}
.winner.kept b {
  color: var(--warn);
}

.again {
  display: block;
  margin: 18px auto 0;
  font: inherit;
  font-weight: 600;
  color: var(--txt);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 22px;
  cursor: pointer;
  transition: all 0.15s;
}
.again:hover {
  border-color: var(--accent);
  color: var(--accent);
}

@media (max-width: 560px) {
  .cards {
    grid-template-columns: 1fr;
  }
  .seg {
    margin-left: 0;
    width: 100%;
    justify-content: center;
  }
}