:root {
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-border: #e5e7eb;
  --color-text: #1f2937;
  --color-muted: #667085;

  --color-primary: #2563eb;
  --color-primary-soft: #dbeafe;

  --color-good-bg: #e8f6ee;
  --color-good-text: #167a45;

  --color-neutral-bg: #f3f4f6;
  --color-neutral-text: #4b5563;

  --color-warn-bg: #fff4e5;
  --color-warn-text: #b45309;

  --color-bad-bg: #fdeaea;
  --color-bad-text: #b42318;

  --shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.08);

  --radius-md: 16px;
  --radius-lg: 22px;

  --max-width: 980px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #f8fbff 0%, var(--color-bg) 100%);
  color: var(--color-text);
}

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 20px 28px;
}

.hero__badge {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3rem);
}

.hero__subtitle {
  margin-top: 10px;
  color: var(--color-muted);
  font-weight: 600;
}

.hero__text {
  max-width: 700px;
  line-height: 1.6;
}

.content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 40px;
  display: grid;
  gap: 20px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-soft);
}

.section-header p {
  color: var(--color-muted);
}

.toggle-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.toggle-button {
  border: none;
  padding: 12px 18px;
  border-radius: 999px;
  background: #eef2f7;
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.toggle-button.active {
  background: var(--color-primary);
  color: white;
}

.simulation-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.state-tag {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.state-tag--luft {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.state-tag--rauch {
  background: #ffe7e0;
  color: #c2410c;
}

.canvas-wrapper {
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #f8fafc;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
}

.marker-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.marker {
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.marker__label {
  font-size: 0.92rem;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.marker__value {
  display: inline-block;
  padding: 7px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
}

.marker__value--good {
  background: var(--color-good-bg);
  color: var(--color-good-text);
}

.marker__value--neutral {
  background: var(--color-neutral-bg);
  color: var(--color-neutral-text);
}

.marker__value--warn {
  background: var(--color-warn-bg);
  color: var(--color-warn-text);
}

.marker__value--bad {
  background: var(--color-bad-bg);
  color: var(--color-bad-text);
}

.explanation-box {
  margin-top: 18px;
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 40px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.92rem;
}
``