:root {
  --bg: #09131f;
  --bg-deep: #050b15;
  --panel: rgba(9, 20, 34, 0.78);
  --panel-solid: #0f1b2d;
  --text: #e8f2ff;
  --muted: #9cb3cc;
  --accent: #45d3a0;
  --accent-soft: rgba(69, 211, 160, 0.22);
  --cyan: #4ab5f5;
  --gold: #f6d06f;
  --border: rgba(144, 179, 209, 0.25);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Manrope", "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 640px at 10% -10%, #1f3655 0%, transparent 55%),
    radial-gradient(900px 540px at 95% 0%, #1d503f 0%, transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  position: relative;
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  width: 350px;
  height: 350px;
  border-radius: 50%;
  filter: blur(70px);
  z-index: -1;
  pointer-events: none;
  animation: drift 18s ease-in-out infinite;
}

.bg-orb-left {
  left: -120px;
  top: 160px;
  background: rgba(74, 181, 245, 0.2);
}

.bg-orb-right {
  right: -140px;
  top: 40px;
  background: rgba(69, 211, 160, 0.18);
  animation-delay: -6s;
}

@keyframes drift {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-18px) scale(1.05);
  }
}

.hero {
  padding: 56px 20px 28px;
}

.hero-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.kicker {
  margin: 0;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 10px 0 8px;
  font-size: clamp(2rem, 3.8vw, 3.15rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 700px;
}

.container {
  max-width: 1120px;
  margin: 0 auto 70px;
  padding: 0 20px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  border-radius: 14px;
  padding: 14px 16px;
}

.stat-label {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.stat-value {
  margin: 0;
  font-size: 28px;
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
  font-weight: 700;
  color: #f2f8ff;
}

.controls {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 220px 220px;
  gap: 12px;
  margin-bottom: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.controls input,
.controls select {
  width: 100%;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 13px;
  font-size: 14px;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.controls input:focus,
.controls select:focus {
  border-color: rgba(74, 181, 245, 0.75);
  box-shadow: 0 0 0 4px rgba(74, 181, 245, 0.14);
  transform: translateY(-1px);
}

.status-message {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.status-message.error {
  color: #ff9aa2;
}

.table-wrap {
  position: relative;
  background: var(--panel-solid);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 16px;
  overflow: auto;
}

#leaderboard {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
}

#leaderboard th,
#leaderboard td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(138, 166, 191, 0.16);
  text-align: left;
  font-size: 13px;
}

#leaderboard th {
  position: sticky;
  top: 0;
  z-index: 2;
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.08em;
  background: #122238;
  color: #a9c7e4;
}

#leaderboard tbody tr {
  transition: background-color 120ms ease;
}

#leaderboard tbody tr:hover td {
  background: rgba(78, 110, 143, 0.17);
}

.rank-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 24px;
  border-radius: 999px;
  border: 1px solid rgba(167, 197, 224, 0.3);
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
  font-weight: 700;
}

.rank-1,
.rank-2,
.rank-3 {
  border-color: rgba(246, 208, 111, 0.7);
  background: rgba(246, 208, 111, 0.16);
  color: #ffe3a1;
}

.type-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid transparent;
}

.type-human {
  background: rgba(74, 181, 245, 0.15);
  color: #9fd7fb;
  border-color: rgba(74, 181, 245, 0.4);
}

.type-llm {
  background: rgba(69, 211, 160, 0.14);
  color: #8be4c2;
  border-color: rgba(69, 211, 160, 0.42);
}

.type-hybrid {
  background: rgba(246, 208, 111, 0.14);
  color: #ffe5a4;
  border-color: rgba(246, 208, 111, 0.44);
}

.type-unknown {
  background: rgba(174, 180, 196, 0.14);
  color: #d2d9e6;
  border-color: rgba(174, 180, 196, 0.38);
}

.metric {
  font-family: "JetBrains Mono", "SFMono-Regular", Menlo, monospace;
}

.submitter-link {
  color: #88cdff;
  text-decoration: none;
}

.submitter-link:hover {
  text-decoration: underline;
}

.empty-state {
  margin: 0;
  padding: 24px 14px;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 960px) {
  .stats {
    grid-template-columns: 1fr;
  }

  .controls {
    grid-template-columns: 1fr;
  }
}