:root {
  color-scheme: light;
  --ink: #1d2525;
  --muted: #60706c;
  --line: #d8dfd8;
  --paper: #f8f7f0;
  --panel: #ffffff;
  --green: #2e7d5b;
  --leaf: #6aa857;
  --teal: #157a8c;
  --amber: #bd7b2f;
  --red: #b14c43;
  --shadow: 0 18px 44px rgba(41, 51, 47, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

.app-shell {
  width: min(1640px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 36px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 4.1rem);
  line-height: 0.95;
  max-width: 760px;
}

.subtitle {
  max-width: 780px;
  margin: 14px 0 0;
  color: #475b56;
  font-size: 1.03rem;
  line-height: 1.55;
}

.project-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.project-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid #cfdbd4;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: #36534d;
  font-size: 0.82rem;
  font-weight: 800;
  text-decoration: none;
}

.project-nav a:hover {
  border-color: var(--teal);
  color: var(--teal);
}

h2 {
  margin-bottom: 14px;
  font-size: 1rem;
}

h3 {
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.score-card {
  display: grid;
  min-width: 170px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.score-card span,
.label,
.chart-header span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.score-card strong {
  color: var(--green);
  font-size: 2.35rem;
  line-height: 1;
}

.score-card small {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 750;
}

.workspace {
  display: grid;
  grid-template-columns: 310px minmax(420px, 1fr) 310px;
  gap: 16px;
  align-items: stretch;
}

.panel,
.chart-panel,
.summary-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.panel {
  padding: 18px;
}

.panel-title,
.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

#resetBtn {
  min-height: 34px;
  border: 1px solid #cbd5cf;
  border-radius: 8px;
  background: #f4f5ef;
  color: var(--ink);
  cursor: pointer;
  font-weight: 750;
}

.controls {
  display: grid;
  gap: 16px;
}

.control {
  display: grid;
  gap: 8px;
}

.control-group {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid #e1e7e1;
  border-radius: 8px;
  background: #fbfcf8;
}

.control-group h3 {
  margin-bottom: 0;
  color: #33423e;
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.control-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.control label {
  font-size: 0.84rem;
  font-weight: 800;
}

.control output {
  color: var(--teal);
  font-size: 0.84rem;
  font-weight: 850;
  white-space: nowrap;
}

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

.range-row {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.72rem;
}

.preset-panel {
  margin-bottom: 16px;
  padding: 12px;
  border: 1px solid #e1e7e1;
  border-radius: 8px;
  background: #f8fbf6;
}

.preset-panel > span {
  display: block;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 850;
  text-transform: uppercase;
}

.preset-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.preset-grid button {
  min-height: 38px;
  padding: 6px 10px;
  border: 1px solid #cbd8d0;
  border-radius: 8px;
  background: #ffffff;
  color: #25322f;
  cursor: pointer;
  font-size: 0.77rem;
  font-weight: 800;
  text-align: left;
}

.preset-grid button:hover {
  border-color: var(--teal);
  background: #eef6f2;
}

.sim-stage {
  position: relative;
  min-height: 590px;
  overflow: hidden;
  border: 1px solid #ccd6cf;
  border-radius: 8px;
  background: #d9bd83;
  box-shadow: var(--shadow);
}

#ecosystemCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 590px;
}

.stage-overlay {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  pointer-events: none;
}

.stage-overlay > div {
  min-width: 0;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
}

.stage-overlay strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
  font-size: 1.05rem;
}

.metrics {
  display: grid;
  gap: 10px;
}

.metric {
  padding: 12px;
  border: 1px solid #e1e7e1;
  border-radius: 8px;
  background: #fbfcf8;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 4px;
  color: var(--ink);
  font-size: 1.22rem;
}

.metric small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  line-height: 1.35;
}

.formula-box {
  margin-top: 16px;
  padding: 14px;
  border-left: 4px solid var(--teal);
  background: #eef6f2;
}

.formula-box p {
  margin-bottom: 0;
  color: #40514d;
  font-size: 0.88rem;
  line-height: 1.45;
}

.score-breakdown {
  margin-top: 16px;
  padding: 14px;
  border: 1px solid #e0e7df;
  border-radius: 8px;
  background: #fbfcf8;
}

.score-breakdown-list {
  display: grid;
  gap: 10px;
}

.score-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.score-row span {
  color: #33423e;
  font-size: 0.78rem;
  font-weight: 800;
}

.score-row strong {
  color: var(--teal);
  font-size: 0.8rem;
}

.score-track {
  grid-column: 1 / -1;
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: #e6ece5;
}

.score-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--teal), var(--green));
}

.data-board {
  display: grid;
  grid-template-columns: minmax(360px, 1.25fr) minmax(320px, 0.75fr);
  gap: 16px;
  margin-top: 16px;
}

.chart-panel {
  padding: 18px;
}

.chart-panel canvas {
  display: block;
  width: 100%;
  height: 280px;
}

.chart-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.summary-panel {
  margin-top: 16px;
  padding: 22px;
}

.insight-board {
  display: grid;
  grid-template-columns: minmax(340px, 0.9fr) minmax(420px, 1.1fr);
  gap: 16px;
  margin-top: 16px;
}

.verification-panel,
.method-panel {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.verification-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.verification-item {
  padding: 12px;
  border: 1px solid #e0e7df;
  border-radius: 8px;
  background: #fbfcf8;
}

.verification-item span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.verification-item strong {
  display: block;
  color: #293633;
  font-size: 0.96rem;
}

.verification-item small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  line-height: 1.35;
}

.assumption-list {
  margin: 0;
  padding-left: 20px;
  color: #33423e;
  font-size: 0.92rem;
  line-height: 1.6;
}

.assumption-list li + li {
  margin-top: 8px;
}

.summary-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.summary-header h2 {
  margin-bottom: 0;
  font-size: 1.35rem;
}

#summaryBadge {
  flex: 0 0 auto;
  padding: 8px 12px;
  border-radius: 999px;
  background: #eef6f2;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 850;
}

#summaryBadge.stressed {
  background: #fff0e8;
  color: var(--red);
}

#summaryBadge.regenerating {
  background: #e8f5ec;
  color: var(--green);
}

#summaryBadge.balanced {
  background: #eef6f2;
  color: var(--teal);
}

.summary-lead {
  max-width: 1180px;
  margin-bottom: 18px;
  color: #33423e;
  font-size: 1.03rem;
  line-height: 1.65;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.summary-item {
  min-width: 0;
  padding: 14px;
  border: 1px solid #e0e7df;
  border-radius: 8px;
  background: #fbfcf8;
}

.summary-item span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.summary-item p {
  margin-bottom: 0;
  color: #293633;
  font-size: 0.92rem;
  line-height: 1.48;
}

@media (max-width: 1180px) {
  .workspace,
  .data-board,
  .insight-board {
    grid-template-columns: 1fr;
  }

  .controls {
    grid-template-columns: repeat(2, minmax(220px, 1fr));
  }

  .sim-stage,
  #ecosystemCanvas {
    min-height: 520px;
  }

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

  .control-group {
    align-content: start;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 20px, 1640px);
    padding-top: 16px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .score-card {
    min-width: 0;
  }

  .controls,
  .stage-overlay,
  .verification-grid {
    grid-template-columns: 1fr;
  }

  .sim-stage,
  #ecosystemCanvas {
    min-height: 480px;
  }

  .summary-header {
    align-items: stretch;
    flex-direction: column;
  }

  .summary-grid {
    grid-template-columns: 1fr;
  }
}