/* === TraceBase Design System === */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --black: #0a0a0a;
  --white: #fafafa;
  --gray-100: #f2f2f2;
  --gray-200: #e4e4e4;
  --gray-400: #a0a0a0;
  --gray-600: #666;
  --gray-800: #1a1a1a;
  --gray-900: #111;
  --accent: #00e599;
  --accent-dim: #00c47e;
  --accent-glow: rgba(0, 229, 153, 0.15);
  --accent-glow-strong: rgba(0, 229, 153, 0.25);
  --red: #ff4757;
  --blue: #3b82f6;
  --card-bg: #141414;
  --card-border: #222;
}

body {
  font-family: 'DM Sans', -apple-system, sans-serif;
  background: var(--black);
  color: var(--white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.accent { color: var(--accent); }

/* === Nav === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 2rem;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--white);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
}
.logo-icon {
  color: var(--accent);
  font-size: 1.5rem;
}
.nav-links {
  display: flex;
  gap: 2rem;
}
.nav-links a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  width: 100%;
}
.tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(0, 229, 153, 0.3);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}
h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.hero-sub {
  font-size: 1.2rem;
  color: var(--gray-400);
  max-width: 560px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

/* === Search Box === */
.search-box {
  background: var(--gray-900);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 0.5rem;
  max-width: 680px;
  margin: 0 auto;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.search-box:focus-within {
  border-color: rgba(0, 229, 153, 0.4);
  box-shadow: 0 0 30px var(--accent-glow);
}
.search-fields {
  display: flex;
  align-items: center;
  gap: 0;
}
.search-field {
  flex: 1;
  padding: 0.75rem 1.25rem;
}
.search-field label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  margin-bottom: 0.3rem;
  font-family: 'Space Grotesk', sans-serif;
}
.search-field input {
  width: 100%;
  background: none;
  border: none;
  outline: none;
  color: var(--white);
  font-size: 1rem;
  font-family: 'DM Sans', sans-serif;
}
.search-field input::placeholder { color: var(--gray-600); }
.search-divider {
  width: 1px;
  height: 40px;
  background: var(--card-border);
  flex-shrink: 0;
}
.search-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--black);
  border: none;
  padding: 0.9rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: 'Space Grotesk', sans-serif;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  flex-shrink: 0;
  margin-right: 0.25rem;
}
.search-btn:hover { background: var(--accent-dim); }
.search-btn:active { transform: scale(0.97); }
.search-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
.search-hint {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--gray-600);
}

/* === Features === */
.features {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.3s;
}
.feature-card:hover { border-color: rgba(0, 229, 153, 0.3); }
.feature-icon { font-size: 2rem; margin-bottom: 1rem; }
.feature-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.feature-card p {
  color: var(--gray-400);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === How It Works === */
.how-it-works {
  padding: 6rem 2rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.how-it-works h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.step { text-align: center; }
.step-num {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 1rem;
  border: 1px solid rgba(0, 229, 153, 0.3);
}
.step h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.step p {
  color: var(--gray-400);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* === CTA === */
.cta-section {
  text-align: center;
  padding: 6rem 2rem;
  position: relative;
}
.cta-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.cta-section h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  position: relative;
}
.cta-section p {
  color: var(--gray-400);
  font-size: 1.1rem;
  margin-bottom: 2rem;
  position: relative;
}
.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--black);
  padding: 1rem 2.5rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1.1rem;
  font-family: 'Space Grotesk', sans-serif;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
  position: relative;
}
.cta-btn:hover { background: var(--accent-dim); }
.cta-btn:active { transform: scale(0.97); }

/* === Footer === */
.footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--card-border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.footer-copy {
  color: var(--gray-600);
  font-size: 0.85rem;
}

/* === Search Results Page === */
.results-page {
  padding: 7rem 2rem 4rem;
  max-width: 900px;
  margin: 0 auto;
}
.results-header {
  margin-bottom: 2rem;
}
.results-header h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}
.results-meta {
  color: var(--gray-400);
  font-size: 0.9rem;
}

/* Search bar mini (on results page) */
.search-mini {
  background: var(--gray-900);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 0.4rem;
  margin-bottom: 2rem;
}
.search-mini .search-fields { gap: 0; }
.search-mini .search-field { padding: 0.5rem 1rem; }
.search-mini .search-field label { font-size: 0.65rem; }
.search-mini .search-field input { font-size: 0.9rem; }
.search-mini .search-btn { padding: 0.7rem 1.2rem; font-size: 0.85rem; }

/* Result Cards */
.result-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.75rem;
  margin-bottom: 1rem;
  transition: border-color 0.3s;
}
.result-card:hover { border-color: rgba(0, 229, 153, 0.3); }
.result-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.result-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
}
.result-location {
  color: var(--gray-400);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}
.result-age {
  display: inline-block;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: 'Space Grotesk', sans-serif;
}
.confidence-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: 'Space Grotesk', sans-serif;
  margin-left: 0.5rem;
}
.confidence-high { background: rgba(0, 229, 153, 0.15); color: var(--accent); }
.confidence-medium { background: rgba(59, 130, 246, 0.15); color: var(--blue); }
.confidence-low { background: rgba(160, 160, 160, 0.15); color: var(--gray-400); }

.result-sections {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.result-section h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  margin-bottom: 0.5rem;
}
.result-section ul {
  list-style: none;
}
.result-section li {
  font-size: 0.9rem;
  padding: 0.3rem 0;
  color: var(--gray-100);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.result-section li .icon {
  color: var(--accent);
  font-size: 0.8rem;
  width: 16px;
  flex-shrink: 0;
}
.social-link {
  color: var(--gray-100);
  text-decoration: none;
  transition: color 0.2s;
}
.social-link:hover { color: var(--accent); }
.masked {
  color: var(--gray-600);
  cursor: pointer;
  position: relative;
}
.masked:hover { color: var(--accent); }

/* Loading State */
.loading-container {
  text-align: center;
  padding: 4rem 2rem;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--card-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 1.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text {
  color: var(--gray-400);
  font-size: 1rem;
}

/* No Results */
.no-results {
  text-align: center;
  padding: 4rem 2rem;
}
.no-results h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}
.no-results p {
  color: var(--gray-400);
  font-size: 1rem;
}

/* Error */
.error-msg {
  background: rgba(255, 71, 87, 0.1);
  border: 1px solid rgba(255, 71, 87, 0.3);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  color: var(--red);
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

/* === Pricing Page === */
.page-content {
  padding: 8rem 2rem 4rem;
  max-width: 900px;
  margin: 0 auto;
}
.page-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.page-content .subtitle {
  color: var(--gray-400);
  font-size: 1.2rem;
  margin-bottom: 3rem;
}
.pricing-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.pricing-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.5rem;
}
.pricing-card.featured {
  border-color: rgba(0, 229, 153, 0.4);
  position: relative;
}
.pricing-card.featured::before {
  content: 'POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--black);
  padding: 0.25rem 1rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: 'Space Grotesk', sans-serif;
  letter-spacing: 0.1em;
}
.pricing-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}
.price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.price span { font-size: 1rem; color: var(--gray-400); font-weight: 400; }
.pricing-card ul {
  list-style: none;
  margin: 1.5rem 0;
}
.pricing-card li {
  padding: 0.4rem 0;
  color: var(--gray-200);
  font-size: 0.9rem;
}
.pricing-card li::before {
  content: '✓';
  color: var(--accent);
  margin-right: 0.75rem;
  font-weight: 700;
}
.pricing-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0.9rem;
  border-radius: 12px;
  font-weight: 600;
  font-family: 'Space Grotesk', sans-serif;
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.2s;
}
.pricing-btn-primary {
  background: var(--accent);
  color: var(--black);
}
.pricing-btn-primary:hover { background: var(--accent-dim); }
.pricing-btn-secondary {
  background: transparent;
  color: var(--white);
  border: 1px solid var(--card-border);
}
.pricing-btn-secondary:hover { border-color: var(--gray-400); }

/* === Responsive === */
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 1.5rem; }
  .search-fields { flex-direction: column; }
  .search-divider { width: 100%; height: 1px; }
  .search-btn { width: 100%; justify-content: center; margin: 0.25rem; }
  .result-sections { grid-template-columns: 1fr; }
  .pricing-cards { grid-template-columns: 1fr; }
  .nav-links { gap: 1rem; }
  .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }
}