:root {
  --bg: #0f1419;
  --card: #1a2332;
  --border: #2d3a4f;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --ok: #22c55e;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 0.875rem; }
.error { color: var(--danger); margin-top: 0.75rem; }
.hint { color: var(--muted); font-size: 0.85rem; margin: 0 0 1rem; }

.screen { min-height: 100vh; }
.login-card {
  max-width: 380px;
  margin: 10vh auto;
  padding: 2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.login-card h1 { margin: 0 0 0.25rem; font-size: 1.5rem; }
.login-card label {
  display: block;
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--muted);
}
.login-card input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}
.login-card button, .primary, .ghost, .tab {
  cursor: pointer;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
}
.login-card button, .primary {
  margin-top: 1.25rem;
  width: 100%;
  padding: 0.75rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.login-card button:hover, .primary:hover { background: var(--accent-hover); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.topbar-actions { display: flex; align-items: center; gap: 1rem; }

.tabs {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
  flex-wrap: wrap;
}
.tab {
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
}
.tab.active {
  color: var(--text);
  background: var(--bg);
  border-color: var(--border);
}
.tab:hover { color: var(--text); }

main { padding: 1.5rem; max-width: 1100px; margin: 0 auto; }
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.panel h2 { margin: 0; font-size: 1.15rem; }
.panel select {
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.weight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}
.weight-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}
.weight-item .label {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.weight-item .pct { color: var(--ok); font-size: 0.85rem; }
.weight-item input[type="range"] { width: 100%; }
.weight-item input[type="number"] {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
}

.lotto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
  gap: 0.5rem;
}
.lotto-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  text-align: center;
  font-size: 0.8rem;
}
.lotto-item input {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.2rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.75rem;
  text-align: center;
}

.form-row { margin: 1rem 0; }
.form-row label { display: block; }
.form-row input[type="range"] { width: 100%; max-width: 400px; margin-top: 0.5rem; }
.check { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }

.footer {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--card);
  border-top: 1px solid var(--border);
}
.ghost {
  padding: 0.6rem 1rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.ghost:hover { color: var(--text); border-color: var(--text); }
.primary { padding: 0.6rem 1.5rem; width: auto; margin: 0; }

@media (max-width: 600px) {
  main { padding: 1rem; }
  .weight-grid { grid-template-columns: 1fr 1fr; }
}