:root {
  --bg: #0b0f17;
  --panel: #101828;
  --card: #0f172a;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e6eaf2;
  --muted: rgba(230, 234, 242, 0.72);
  --accent: #7c5cff;
  --accent2: #22c55e;
  --danger: #ef4444;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --radius2: 24px;
  --max: 1200px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial,
    sans-serif;
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  background: radial-gradient(
      1200px 600px at 20% -10%,
      rgba(124, 92, 255, 0.25),
      transparent 55%
    ),
    radial-gradient(
      900px 500px at 80% 0%,
      rgba(34, 197, 94, 0.18),
      transparent 55%
    ),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 23, 0.75);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
}
.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}
.logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(
    135deg,
    rgba(124, 92, 255, 1),
    rgba(34, 197, 94, 1)
  );
  box-shadow: var(--shadow);
}
.brand h1 {
  font-size: 18px;
  margin: 0;
  letter-spacing: 0.4px;
}
.brand p {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.chip {
  text-decoration: none;
  color: var(--text);
  font-size: 13px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 999px;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.chip:hover {
  transform: translateY(-1px);
  border-color: rgba(124, 92, 255, 0.5);
}
.chip[aria-current="page"] {
  border-color: rgba(124, 92, 255, 0.75);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.14);
}

.container {
  max-width: var(--max);
  margin: 18px auto 60px;
  padding: 0 16px;
}

.grid {
  display: grid;
  gap: 16px;
}
.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 980px) {
  .grid.two {
    grid-template-columns: 1fr;
  }
}

.card {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.04),
    rgba(255, 255, 255, 0.02)
  );
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-head {
  padding: 18px 18px 10px;
  border-bottom: 1px solid var(--border);
}
.card-head h2 {
  margin: 0;
  font-size: 16px;
}
.card-head p {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.form {
  padding: 16px 18px;
  display: grid;
  gap: 12px;
}
.row {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 720px) {
  .row {
    grid-template-columns: 1fr;
  }
}

label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
input,
select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  outline: none;
}
input:focus,
select:focus {
  border-color: rgba(124, 92, 255, 0.7);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.14);
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.btn {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
  border-color: rgba(124, 92, 255, 0.45);
}
.btn.primary {
  border-color: rgba(124, 92, 255, 0.55);
  background: linear-gradient(
    135deg,
    rgba(124, 92, 255, 0.35),
    rgba(34, 197, 94, 0.18)
  );
}

.hint {
  margin: 0;
  padding: 0 18px 14px;
  color: rgba(230, 234, 242, 0.75);
  font-size: 12px;
}

.totals {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  padding: 0 18px 14px;
}
.metric {
  flex: 1 1 220px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.18);
  padding: 12px 12px;
}
.metric .label {
  display: block;
  font-size: 12px;
  color: var(--muted);
}
.metric .value {
  font-size: 22px;
  font-weight: 700;
  margin-right: 6px;
}
.metric .unit {
  font-size: 12px;
  color: var(--muted);
}

.table-wrap {
  padding: 0 18px 18px;
  overflow: auto;
}
.table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}
.table th,
.table td {
  padding: 10px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  text-align: left;
  font-size: 13px;
}
.table th {
  color: rgba(230, 234, 242, 0.85);
  font-weight: 600;
}
.table td {
  color: rgba(230, 234, 242, 0.85);
}
.table .danger {
  color: var(--danger);
}

.mini {
  margin: 8px 0 0;
  padding-left: 18px;
  color: rgba(230, 234, 242, 0.82);
  font-size: 12px;
}
.note {
  margin-top: 10px;
  border: 1px dashed rgba(255, 255, 255, 0.14);
  background: rgba(0, 0, 0, 0.18);
  border-radius: var(--radius);
  padding: 12px;
  color: rgba(230, 234, 242, 0.82);
  font-size: 12px;
}

.footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px;
  color: rgba(230, 234, 242, 0.6);
  font-size: 12px;
  text-align: center;
}

/* Anatomy layout */
.split {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  padding: 16px 18px 18px;
}
@media (max-width: 980px) {
  .split {
    grid-template-columns: 1fr;
  }
}

.viewer {
  border: 1px solid var(--border);
  border-radius: var(--radius2);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.25);
  min-height: 520px;
}
#anatomyCanvas {
  width: 100%;
  height: 520px;
  display: block;
}

.controls {
  display: grid;
  gap: 10px;
}
.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(230, 234, 242, 0.8);
}
.toggle input {
  width: auto;
}
.range input {
  width: 100%;
}

/* Physiology cards */
.organ-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 16px 18px 18px;
}
.organ {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.18);
  padding: 12px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.organ:hover {
  transform: translateY(-1px);
  border-color: rgba(124, 92, 255, 0.45);
}
.organ h3 {
  margin: 0;
  font-size: 14px;
}
.organ p {
  margin: 6px 0 0;
  color: rgba(230, 234, 242, 0.75);
  font-size: 12px;
}