:root {
  color-scheme: light;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(0, 138, 122, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(255, 163, 26, 0.16), transparent 30%),
    linear-gradient(180deg, #f5f2e9 0%, #eef2f5 48%, #f8fbfc 100%);
  color: #11212b;
}

.option-greeks-visualizer-app {
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}

.option-greeks-visualizer-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  gap: 20px;
  margin-bottom: 24px;
}

.option-greeks-visualizer-hero-copy,
.option-greeks-visualizer-hero-note,
.option-greeks-visualizer-panel,
.option-greeks-visualizer-metric-card {
  border: 1px solid rgba(17, 33, 43, 0.08);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(10px);
  box-shadow: 0 18px 40px rgba(20, 38, 48, 0.08);
}

.option-greeks-visualizer-hero-copy {
  border-radius: 28px;
  padding: 28px;
}

.option-greeks-visualizer-eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: #0a776a;
}

.option-greeks-visualizer-hero-copy h1 {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: clamp(2.2rem, 3vw, 3.6rem);
  line-height: 0.98;
}

.option-greeks-visualizer-subtitle {
  max-width: 760px;
  margin: 16px 0 0;
  color: #445b67;
  font-size: 1.04rem;
  line-height: 1.65;
}

.option-greeks-visualizer-hero-note {
  border-radius: 24px;
  padding: 24px;
  align-self: stretch;
  background: linear-gradient(180deg, rgba(11, 102, 120, 0.92), rgba(18, 54, 65, 0.96));
  color: #f4fcff;
}

.option-greeks-visualizer-hero-note h2 {
  margin: 0 0 12px;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
}

.option-greeks-visualizer-hero-note p {
  margin: 0;
  line-height: 1.7;
  color: rgba(244, 252, 255, 0.88);
}

.option-greeks-visualizer-layout {
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 22px;
}

.option-greeks-visualizer-controls-panel {
  position: sticky;
  top: 20px;
  align-self: start;
}

.option-greeks-visualizer-panel {
  border-radius: 24px;
  padding: 22px;
}

.option-greeks-visualizer-panel-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.option-greeks-visualizer-panel-head h2 {
  margin: 0;
  font-size: 1.25rem;
}

.option-greeks-visualizer-panel-head p {
  margin: 0;
  color: #5b6f79;
  line-height: 1.6;
}

.option-greeks-visualizer-option-type {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.option-greeks-visualizer-toggle,
.option-greeks-visualizer-preset {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.option-greeks-visualizer-toggle {
  padding: 12px 14px;
  background: #e7ecef;
  color: #204150;
  font-weight: 600;
}

.option-greeks-visualizer-toggle.is-active {
  background: linear-gradient(135deg, #0a776a, #114d71);
  color: #fff;
  box-shadow: 0 12px 28px rgba(17, 77, 113, 0.28);
}

.option-greeks-visualizer-presets {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 16px 0 18px;
}

.option-greeks-visualizer-preset {
  padding: 10px 12px;
  background: #fff3de;
  color: #6b4b14;
  font-size: 0.94rem;
}

.option-greeks-visualizer-preset:hover,
.option-greeks-visualizer-toggle:hover {
  transform: translateY(-1px);
}

.option-greeks-visualizer-input-grid {
  display: grid;
  gap: 16px;
}

.option-greeks-visualizer-input {
  display: grid;
  gap: 8px;
}

.option-greeks-visualizer-input span {
  font-size: 0.95rem;
  color: #3a505c;
}

.option-greeks-visualizer-input input[type="range"] {
  width: 100%;
  accent-color: #0d7d71;
}

.option-greeks-visualizer-input strong {
  font-family: "Space Mono", "IBM Plex Mono", monospace;
  color: #103745;
}

.option-greeks-visualizer-explainers {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.option-greeks-visualizer-mini-card {
  border-radius: 18px;
  padding: 16px;
  background: linear-gradient(180deg, rgba(231, 243, 245, 0.95), rgba(244, 248, 249, 0.95));
}

.option-greeks-visualizer-mini-card h3,
.option-greeks-visualizer-formula strong {
  margin: 0 0 6px;
}

.option-greeks-visualizer-mini-card p,
.option-greeks-visualizer-formula-list code {
  margin: 0;
  color: #516771;
  line-height: 1.6;
}

.option-greeks-visualizer-main {
  display: grid;
  gap: 22px;
}

.option-greeks-visualizer-metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.option-greeks-visualizer-metric-card {
  border-radius: 20px;
  padding: 16px 18px;
  display: grid;
  gap: 10px;
}

.option-greeks-visualizer-metric-card span {
  color: #576d78;
  font-size: 0.9rem;
}

.option-greeks-visualizer-metric-card strong {
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: clamp(1.2rem, 2vw, 2rem);
}

.option-greeks-visualizer-surface-stage,
.option-greeks-visualizer-heatmap-card canvas {
  width: 100%;
  display: block;
  border-radius: 18px;
  background: linear-gradient(180deg, #fff, #eef5f7);
}

.option-greeks-visualizer-surface-stage {
  min-height: 520px;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(17, 33, 43, 0.05);
}

.option-greeks-visualizer-surface-stage canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.option-greeks-visualizer-surface-caption {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
  color: #5e717b;
  font-size: 0.9rem;
}

.option-greeks-visualizer-heatmap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.option-greeks-visualizer-heatmap-card {
  border-radius: 18px;
  padding: 16px;
  background: linear-gradient(180deg, #fdfefe, #f4f9fa);
  border: 1px solid rgba(17, 33, 43, 0.06);
}

.option-greeks-visualizer-heatmap-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.option-greeks-visualizer-heatmap-head h3 {
  margin: 0;
}

.option-greeks-visualizer-heatmap-head span {
  color: #58707b;
  font-size: 0.84rem;
}

.option-greeks-visualizer-education-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.option-greeks-visualizer-formula-list {
  display: grid;
  gap: 14px;
}

.option-greeks-visualizer-formula {
  display: grid;
  gap: 6px;
  padding: 14px;
  border-radius: 16px;
  background: #f5f8f8;
}

.option-greeks-visualizer-formula code {
  display: block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88rem;
}

.option-greeks-visualizer-insight-list {
  display: grid;
  gap: 10px;
}

.option-greeks-visualizer-insight {
  padding: 14px;
  border-radius: 16px;
  background: linear-gradient(180deg, #fff8e9, #fff);
  color: #445963;
  line-height: 1.6;
}

.option-greeks-visualizer-audience-list {
  margin: 0;
  padding-left: 18px;
  color: #445963;
  line-height: 1.8;
}

@media (max-width: 1180px) {
  .option-greeks-visualizer-layout,
  .option-greeks-visualizer-hero,
  .option-greeks-visualizer-education-grid {
    grid-template-columns: 1fr;
  }

  .option-greeks-visualizer-controls-panel {
    position: static;
  }

  .option-greeks-visualizer-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .option-greeks-visualizer-app {
    padding: 18px 14px 32px;
  }

  .option-greeks-visualizer-metrics,
  .option-greeks-visualizer-heatmap-grid,
  .option-greeks-visualizer-presets {
    grid-template-columns: 1fr;
  }

  .option-greeks-visualizer-option-type {
    grid-template-columns: 1fr 1fr;
  }

  .option-greeks-visualizer-panel,
  .option-greeks-visualizer-hero-copy,
  .option-greeks-visualizer-hero-note {
    border-radius: 20px;
    padding: 18px;
  }

  .option-greeks-visualizer-surface-caption {
    flex-direction: column;
    gap: 6px;
  }
}