:root {
  --bg: #f6f8f7;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --brand: #0d9488;
  --brand-dark: #0f766e;
  --brand-soft: #ccfbf1;
  --warn: #b45309;
  --radius: 14px;
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
  --font: "Inter", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

a {
  color: var(--brand-dark);
}

.page-shell {
  min-height: 100vh;
}

.shell-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  gap: 1rem;
}

.nav-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-title span {
  color: var(--brand);
}

.nav-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--text);
}

.hero {
  padding: 2rem 0 3rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 16ch;
}

.hero-lead {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 2rem;
}

.search-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  max-width: 640px;
}

.search-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.search-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.search-input {
  flex: 1 1 220px;
  min-width: 0;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
  font-size: 1rem;
}

.search-input:focus {
  outline: 2px solid var(--brand-soft);
  border-color: var(--brand);
}

.btn-primary {
  appearance: none;
  border: 0;
  border-radius: 10px;
  padding: 0.85rem 1.25rem;
  background: var(--brand);
  color: #fff;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.search-hint {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.search-error {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
  color: #b91c1c;
}

.section {
  padding: 3rem 0 0;
}

.section h2 {
  font-size: 1.5rem;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

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

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.step-num {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.step-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.step-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.disclaimer {
  margin-top: 3rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid #fde68a;
  background: #fffbeb;
  color: #92400e;
  font-size: 0.9rem;
}

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text);
}

/* Report page */
.report-shell {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 4rem;
}

.report-header {
  margin-bottom: 1.5rem;
}

.report-header h1 {
  font-size: 1.75rem;
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
}

.report-meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.report-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.report-card h2 {
  font-size: 1.1rem;
  margin: 0 0 0.75rem;
}

.risk-pill {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

.risk-pill--unknown {
  background: #f1f5f9;
  color: #475569;
}

.risk-pill--low {
  background: #dcfce7;
  color: #166534;
}

.risk-pill--medium {
  background: #fef3c7;
  color: #92400e;
}

.risk-pill--high {
  background: #fee2e2;
  color: #991b1b;
}

.report-loading,
.report-empty {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--muted);
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
}