:root {
  color-scheme: light;
  --bg: #f5efe7;
  --panel: rgba(255, 251, 246, 0.92);
  --ink: #1b1b1b;
  --muted: #5e5b57;
  --line: rgba(27, 27, 27, 0.1);
  --accent: #b85042;
  --accent-soft: rgba(184, 80, 66, 0.12);
  --accent-alt: #15616d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(184, 80, 66, 0.18), transparent 28%),
    radial-gradient(circle at bottom right, rgba(21, 97, 109, 0.18), transparent 24%),
    linear-gradient(135deg, #f7f1e7 0%, #efe7db 52%, #ece7df 100%);
}

.topbar {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 8px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
}

.eyebrow {
  margin: 0 0 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.topbar h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 0.95;
}

.subtitle {
  margin: 0;
  max-width: 44rem;
  color: var(--muted);
  line-height: 1.6;
}

.portal-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.portal-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.65);
  color: var(--ink);
  text-decoration: none;
}

.layout {
  width: min(1200px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0 40px;
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 18px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: 0 22px 45px rgba(27, 27, 27, 0.07);
}

.controls-panel {
  padding: 24px;
}

.section-head h2,
.note-panel h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.section-head p,
.note-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.section-copy {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.5;
}

.help-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 999px;
  border: 1px solid rgba(21, 97, 109, 0.26);
  background: rgba(21, 97, 109, 0.08);
  color: var(--accent-alt);
  padding: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1;
}

.help-icon:hover {
  background: rgba(21, 97, 109, 0.14);
}

.controls {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.control {
  display: grid;
  gap: 10px;
  padding: 14px 14px 12px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.62);
}

.control-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  font-weight: 500;
}

.control output {
  font-family: "IBM Plex Mono", monospace;
  color: var(--accent);
}

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

.range-caption {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.control-copy {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.5;
  color: var(--ink);
}

.control-impact {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--muted);
}

.results-column {
  display: grid;
  gap: 18px;
}

.hero-panel {
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 16px;
  align-items: end;
}

.hero-panel h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 4.8rem);
  line-height: 0.92;
  color: var(--accent);
}

.metric-label,
.secondary-label,
.stat-label {
  margin: 0;
  color: var(--muted);
}

.secondary-metric {
  display: grid;
  gap: 8px;
  justify-items: start;
  padding: 16px 18px;
  border-radius: 22px;
  background: var(--accent-soft);
}

.secondary-metric strong {
  font-size: 1.6rem;
}

.summary-grid {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.summary-grid article {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.62);
}

.summary-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 1.35rem;
}

.impact-grid strong.positive {
  color: #0f766e;
}

.impact-grid strong.negative {
  color: #b91c1c;
}

.chart-toggle {
  display: inline-flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.chart-toggle button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  font: inherit;
  cursor: pointer;
}

.chart-toggle .active {
  border-color: rgba(184, 80, 66, 0.28);
  background: var(--accent-soft);
  color: var(--accent);
}

.chart {
  height: 360px;
  margin-top: 12px;
}

.chart.compact {
  height: 320px;
}

.chart-grid {
  display: grid;
  gap: 16px;
  margin-top: 14px;
}

.chart-grid.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.chart-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

.results-column > .panel:not(.hero-panel):not(.summary-grid) {
  padding: 24px;
}

.note-panel {
  padding: 24px;
}

.help-modal {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
}

.help-modal.open {
  display: block;
}

.help-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(27, 27, 27, 0.42);
}

.help-dialog {
  position: relative;
  width: min(680px, calc(100vw - 28px));
  margin: 8vh auto 0;
  padding: 14px;
  border: 1px solid rgba(27, 27, 27, 0.1);
  border-radius: 18px;
  background: rgba(255, 251, 246, 0.98);
  box-shadow: 0 20px 45px rgba(27, 27, 27, 0.22);
}

.help-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(27, 27, 27, 0.08);
}

.help-header h3 {
  margin: 0;
  font-size: 1rem;
}

.help-close {
  border: 1px solid rgba(27, 27, 27, 0.12);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 12px;
  font: inherit;
  cursor: pointer;
}

.help-body {
  padding-top: 12px;
}

.help-body p {
  margin: 0 0 10px;
  line-height: 1.6;
  color: var(--ink);
}

.help-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero-panel,
  .summary-grid,
  .chart-grid.two-up {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .topbar {
    width: min(100% - 24px, 1200px);
    flex-direction: column;
  }

  .layout {
    width: min(100% - 24px, 1200px);
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}