:root {
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --text: #1a1d23;
  --muted: #6b7280;
  --border: #e2e5ea;
  --accent: #2563eb;
  --accent-soft: #eef2ff;
  --warning-bg: #fff4e5;
  --warning-text: #92400e;
  --headline-bg: #ecfdf5;
  --headline-border: #10b981;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111318;
    --card-bg: #1a1d23;
    --text: #e7e9ee;
    --muted: #9aa1ac;
    --border: #2a2e37;
    --accent: #60a5fa;
    --accent-soft: #1e2636;
    --warning-bg: #2a2410;
    --warning-text: #fbbf24;
    --headline-bg: #0f2a20;
    --headline-border: #10b981;
  }
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
}

main {
  max-width: 1500px;
  margin: 0 auto;
  padding: 14px 16px 24px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

header h1 {
  margin: 0;
  font-size: 1.4em;
}

.subtitle {
  color: var(--muted);
  margin: 0;
  font-size: 0.85em;
}

.layout {
  display: grid;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  flex: 1;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 1em;
}

.field {
  margin-bottom: 12px;
}

.field:last-child {
  margin-bottom: 0;
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 3px;
  font-size: 0.92em;
}

.hint {
  font-weight: 400;
  color: var(--muted);
  font-size: 0.85em;
}

.field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.field input[type="number"] {
  width: 110px;
  padding: 4px 7px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95em;
  margin-top: 2px;
}

.help {
  color: var(--muted);
  font-size: 0.8em;
  line-height: 1.35;
  margin: 4px 0 0;
}

.warning {
  background: var(--warning-bg);
  color: var(--warning-text);
  border-radius: 8px;
  padding: 8px 12px;
  margin: 0 0 8px;
  font-size: 0.88em;
}

.results {
  padding-top: 12px;
}

.result-group {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.result-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.result-group h3 {
  margin: 0 0 4px;
  font-size: 0.88em;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
}

.secondary-btn {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 0.85em;
  cursor: pointer;
}

.secondary-btn:hover {
  background: var(--accent);
  color: var(--card-bg);
}

.info-btn {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
  border-radius: 50%;
  width: 18px;
  height: 18px;
  line-height: 1;
  font-size: 0.8em;
  cursor: pointer;
  padding: 0;
  text-transform: none;
  letter-spacing: normal;
  flex: none;
}

.info-btn:hover,
.info-btn:focus {
  color: var(--accent);
  border-color: var(--accent);
}

.info-pop {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 4px 0 8px;
  font-size: 0.85em;
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  line-height: 1.45;
  color: var(--text);
  max-height: 60vh;
  overflow-y: auto;
}

.info-pop.hidden {
  display: none;
}

.info-pop p {
  margin: 0 0 8px;
}

.info-pop p:last-child {
  margin-bottom: 0;
}

.info-pop ul {
  margin: 0 0 8px;
  padding-left: 20px;
}

.row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 2px 0;
  font-size: 0.92em;
}

.row.total {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 5px;
  font-weight: 600;
}

.row.big {
  font-size: 1.15em;
}

.headline {
  background: var(--headline-bg);
  border: 1px solid var(--headline-border);
  border-radius: 10px;
  padding: 12px;
}

footer {
  color: var(--muted);
  font-size: 0.78em;
  line-height: 1.4;
  margin-top: 12px;
}