:root {
  --bg: #14181a;
  --surface: #1d2326;
  --surface-2: #252c2f;
  --border: #313a3e;
  --text: #eef2f0;
  --text-secondary: #9aa6a2;
  --accent: #d9b877;
  --accent-dark: #7a4a12;
  --warning-bg: #3a2a12;
  --warning-text: #f0c987;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

header {
  margin-bottom: 24px;
  text-align: center;
}

h1 {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 600;
  color: var(--accent);
}

.subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.field {
  margin-bottom: 16px;
  flex: 1;
}

.row {
  display: flex;
  gap: 12px;
}

label {
  display: block;
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

select {
  width: 100%;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  appearance: none;
}

select:focus {
  outline: none;
  border-color: var(--accent);
}

.result-box {
  background: var(--surface-2);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 20px 0 12px;
}

.result-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.result-value {
  font-size: 26px;
  font-weight: 600;
  color: var(--accent);
}

.warning {
  background: var(--warning-bg);
  color: var(--warning-text);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  margin-bottom: 16px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}

th:last-child, td:last-child {
  text-align: right;
}

td {
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
}

tr.highlight {
  background: rgba(217, 184, 119, 0.12);
}

td.warn {
  color: var(--warning-text);
}

footer {
  margin-top: 20px;
  text-align: center;
  font-size: 11px;
  color: var(--text-secondary);
  opacity: 0.7;
}