:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
}

.container {
  max-width: 900px;
  margin: 32px auto;
  padding: 0 16px 24px;
}

.page-nav {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.page-nav a {
  text-decoration: none;
  color: #cbd5e1;
  border: 1px solid #334155;
  background: #1e293b;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
}

.page-nav a.active {
  color: #0f172a;
  background: #93c5fd;
  border-color: #93c5fd;
}

h1 {
  margin-bottom: 6px;
}

.subtitle {
  margin-top: 0;
  color: #94a3b8;
}

.rank-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin: 16px 0 24px;
}

.card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 14px;
}

.card h2 {
  font-size: 0.95rem;
  margin: 0 0 8px;
  color: #94a3b8;
}

.card p {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
}

.table-wrap {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 14px;
}

.calculator-wrap {
  padding: 16px;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  color: #cbd5e1;
}

.field-input {
  width: 100%;
  border: 1px solid #334155;
  border-radius: 8px;
  background: #0f172a;
  color: #e2e8f0;
  padding: 10px;
  font: inherit;
}

.btn-row {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

button {
  border: 1px solid #93c5fd;
  background: #93c5fd;
  color: #0f172a;
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 700;
}

button.secondary {
  border-color: #334155;
  background: #1e293b;
  color: #cbd5e1;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 10px 8px;
  text-align: left;
  border-bottom: 1px solid #334155;
}

th {
  color: #94a3b8;
  font-size: 0.9rem;
}

.status {
  margin-top: 14px;
  color: #cbd5e1;
}