:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-strong: #eef3f6;
  --ink: #151923;
  --muted: #5f6b78;
  --line: #d8e1ea;
  --accent: #007f73;
  --accent-soft: #dff4ef;
  --coral: #d86f45;
  --yellow: #b88716;
  --shadow: 0 18px 50px rgba(17, 24, 39, 0.1);
  --radius: 8px;
  --max-width: 1240px;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111419;
  --surface: #1a1f27;
  --surface-strong: #232a35;
  --ink: #f5f7fb;
  --muted: #b5bfcb;
  --line: #323b48;
  --accent: #45c7b5;
  --accent-soft: #143a36;
  --coral: #ff9b70;
  --yellow: #f1c56b;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(90deg, rgba(0, 127, 115, 0.07), transparent 34%),
    linear-gradient(180deg, rgba(216, 111, 69, 0.07), transparent 38%),
    var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem max(1rem, calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface), transparent 8%);
  backdrop-filter: blur(16px);
}

.brand,
.app-header nav {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.brand,
.app-header a {
  text-decoration: none;
}

.brand span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--surface);
  font-weight: 900;
}

.app-header nav a,
.theme-toggle,
.ghost-button,
.preset-row button,
.table-heading button {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-weight: 800;
  min-height: 38px;
  padding: 0.55rem 0.75rem;
  text-decoration: none;
}

.app-header nav a:hover,
.theme-toggle:hover,
.ghost-button:hover,
.preset-row button:hover,
.table-heading button:hover {
  border-color: var(--accent);
}

.app-shell {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding: 4rem 0 5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

.hero > div:first-child {
  max-width: 880px;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 1rem;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1;
}

h2 {
  margin-bottom: 0.5rem;
  font-size: 1.35rem;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1rem;
}

.hero p,
.control-panel p,
.result-card p,
.detail-summary,
.note-panel span,
.reference-panel p,
.empty-state p {
  color: var(--muted);
}

.hero-panel,
.control-panel,
.selected-strip,
.summary-grid article,
.results-panel,
.detail-panel,
.note-panel,
.reference-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface), transparent 2%);
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  min-height: 150px;
  place-items: center;
  padding: 1rem;
  text-align: center;
}

.hero-panel span {
  color: var(--coral);
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1;
}

.hero-panel p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-weight: 800;
}

.control-panel,
.results-panel,
.detail-panel {
  padding: 1rem;
}

.panel-heading,
.table-heading,
.detail-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.control-grid {
  display: grid;
  grid-template-columns: minmax(220px, 340px) minmax(260px, 1fr);
  gap: 0.8rem;
  margin: 1rem 0;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field select,
.field input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  min-height: 44px;
  padding: 0.65rem 0.75rem;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.preset-row button {
  background: var(--surface-strong);
}

.symptom-groups {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}

.symptom-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 0.8rem;
}

.symptom-group h3 {
  margin-bottom: 0.7rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.symptom-buttons {
  display: grid;
  gap: 0.45rem;
}

.symptom-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 800;
  min-height: 42px;
  padding: 0.55rem 0.65rem;
  text-align: left;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.symptom-button::after {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border: 2px solid var(--line);
  border-radius: 50%;
}

.symptom-button:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.symptom-button.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.symptom-button.is-active::after {
  border-color: var(--accent);
  background: var(--accent);
}

.selected-strip {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 1rem;
  padding: 0.8rem 1rem;
}

.selected-strip div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  color: var(--ink);
  font-weight: 800;
  padding: 0.4rem 0.6rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.summary-grid article {
  padding: 1rem;
  box-shadow: none;
}

.summary-grid span {
  display: block;
  color: var(--coral);
  font-size: 1.7rem;
  font-weight: 900;
  line-height: 1;
}

.summary-grid p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.result-list {
  display: grid;
  gap: 0.65rem;
  max-height: 74vh;
  overflow: auto;
  padding-right: 0.35rem;
}

.result-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  padding: 0.8rem;
  text-align: left;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.result-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.result-card.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.result-card strong {
  display: block;
  margin-bottom: 0.35rem;
}

.result-card p {
  margin-bottom: 0.65rem;
  font-size: 0.92rem;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.result-meta span,
.priority-badge {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 900;
  padding: 0.25rem 0.45rem;
  text-transform: uppercase;
}

.priority-badge[data-level="High"] {
  border-color: color-mix(in srgb, var(--coral), var(--line) 45%);
  color: var(--coral);
}

.priority-badge[data-level="Medium"] {
  border-color: color-mix(in srgb, var(--yellow), var(--line) 45%);
  color: var(--yellow);
}

.case-detail,
.checklist-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
}

.case-detail + .checklist-panel {
  margin-top: 1rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.detail-grid > div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 0.85rem;
}

.source-focus {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.75fr);
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.source-focus > div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 0.85rem;
}

.source-links,
.reference-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.source-links a,
.source-links span,
.reference-links a,
.reference-links span {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 900;
  padding: 0.45rem 0.6rem;
  text-decoration: none;
}

.source-links a:hover,
.reference-links a:hover {
  border-color: var(--accent);
}

.source-links span,
.reference-links span {
  color: var(--muted);
}

ul {
  margin: 0;
  padding-left: 1.1rem;
}

li {
  margin-bottom: 0.35rem;
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.2rem;
}

.checklist {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.check-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 0.65rem;
}

.check-item input {
  margin-top: 0.28rem;
}

.check-item span {
  color: var(--ink);
  font-weight: 700;
}

.check-item:has(input:checked) span {
  color: var(--muted);
  text-decoration: line-through;
}

.note-panel {
  display: flex;
  gap: 0.6rem;
  margin-top: 1rem;
  padding: 0.9rem 1rem;
}

.reference-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 1fr);
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1rem;
}

.is-hidden {
  display: none !important;
}

@media (max-width: 1060px) {
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

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

  .result-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-height: none;
  }
}

@media (max-width: 760px) {
  .app-header,
  .app-header nav,
  .selected-strip,
  .note-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .app-shell {
    padding-top: 2.5rem;
  }

  .control-grid,
  .summary-grid,
  .detail-grid,
  .source-focus,
  .reference-panel,
  .result-list,
  .symptom-groups {
    grid-template-columns: 1fr;
  }

  .panel-heading,
  .table-heading,
  .detail-heading {
    align-items: stretch;
    flex-direction: column;
  }
}