:root {
  --bg: #0f1419;
  --card: #1a2332;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --accent-dim: #2a5fad;
  --ok: #3dd68c;
  --warn: #f5a524;
  --err: #f87171;
  --font: "Segoe UI", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(ellipse at top, #1a2744 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.5;
}

.layout {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.tables-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 820px) {
  .tables-grid { grid-template-columns: 1fr; }
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
  font-weight: 650;
}

.subtitle {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

code {
  background: #0d1117;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  overflow: visible;
}

.card h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}

form label {
  display: block;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.field-email {
  margin-bottom: 0.85rem;
  overflow: visible;
}

.field-email > label {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.label-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.35rem;
  width: fit-content;
  max-width: 100%;
}

.tooltip-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.tooltip-trigger {
  margin: 0;
  padding: 0.2rem 0.4rem;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1;
  cursor: help;
  vertical-align: middle;
}

.tooltip-trigger:hover,
.tooltip-trigger:focus-visible {
  color: var(--accent);
  outline: none;
}

.tooltip-text {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.5rem);
  top: auto;
  z-index: 50;
  width: max-content;
  max-width: 280px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0d1117;
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.4;
  text-align: left;
  white-space: normal;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
  pointer-events: none;
}

.tooltip-text::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  bottom: auto;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--border);
}

.tooltip-trigger:hover + .tooltip-text,
.tooltip-trigger:focus-visible + .tooltip-text {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #0d1117;
  color: var(--text);
  font-size: 1rem;
}

input:focus {
  outline: 2px solid var(--accent);
  border-color: transparent;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

button {
  margin-top: 0.5rem;
  padding: 0.65rem 1.25rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover:not(:disabled) {
  background: var(--accent-dim);
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

button.secondary {
  margin-top: 0;
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.leaderboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th,
td {
  padding: 0.5rem 0.4rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 500;
}

.rank-cell {
  white-space: nowrap;
  font-size: 1rem;
}

tr.top-1 td {
  color: var(--ok);
}

tr.top-2 td,
tr.top-3 td {
  color: var(--warn);
}

tr.my-row td {
  background: rgba(61, 139, 253, 0.10);
  font-weight: 600;
}

tr.my-row.top-1 td,
tr.my-row.top-2 td,
tr.my-row.top-3 td {
  background: rgba(61, 139, 253, 0.15);
}

tr.best-row td {
  background: rgba(61, 139, 253, 0.10);
  font-weight: 600;
}

.muted {
  color: var(--muted);
  text-align: center;
}

.cooldown-msg,
.param-warn {
  color: var(--warn);
  font-size: 0.9rem;
}

.error {
  color: var(--err);
  font-size: 0.9rem;
}

.success {
  color: var(--ok);
  font-size: 0.9rem;
}