/* DataLookout — Shared Design System */
/* Professional design for pharma/biotech audience */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── CSS Variables ── */
:root {
  /* Colors */
  --color-primary:        #2563eb;
  --color-primary-dark:   #1d4ed8;
  --color-text:           #0f172a;
  --color-text-muted:     #64748b;
  --color-bg:             #ffffff;
  --color-bg-subtle:      #f8fafc;
  --color-border:         #e2e8f0;
  --color-success:        #16a34a;

  /* Semantic aliases (backward compat) */
  --blue:       var(--color-primary);
  --blue-dark:  var(--color-primary-dark);
  --green:      var(--color-success);
  --slate-900:  var(--color-text);
  --slate-700:  #334155;
  --slate-500:  var(--color-text-muted);
  --slate-200:  var(--color-border);
  --slate-50:   var(--color-bg-subtle);

  /* Spacing (8px grid) */
  --space-1:  8px;
  --space-2:  16px;
  --space-3:  24px;
  --space-4:  32px;
  --space-5:  40px;
  --space-6:  48px;
  --space-7:  56px;
  --space-8:  64px;
  --space-9:  72px;
  --space-10: 80px;
  --space-11: 88px;
  --space-12: 96px;
}

/* ── Base Typography ── */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
}

h2 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
}

h3 {
  font-size: 22px;
  font-weight: 600;
}

p {
  line-height: 1.6;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ── Layout ── */
.container {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 var(--space-3);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-brand .brand-accent {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 14px;
  font-weight: 500;
}

.nav-links a {
  color: var(--color-text-muted);
  transition: color 0.15s;
}

.nav-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
  line-height: 1;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  display: inline-block;
  background: #fff;
  color: var(--color-text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 8px;
  border: 1.5px solid var(--color-border);
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
  line-height: 1;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

/* Legacy aliases */
.btn {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}

.btn-outline {
  border: 1.5px solid var(--color-border);
  color: var(--slate-700);
  background: transparent;
  text-decoration: none;
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

/* ── Badge / Pill ── */
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.03em;
}

.badge-blue {
  background: #eff6ff;
  color: var(--color-primary);
}

.badge-green {
  background: #f0fdf4;
  color: var(--color-success);
}

.badge-gray {
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
}

/* ── Card ── */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: var(--space-3);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
}

/* ── Trust chips (hero) ── */
.trust-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: var(--space-2);
}

.trust-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 5px 14px;
}

/* ── Stats row ── */
.stats-row {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5) var(--space-3);
  background: var(--color-bg-subtle);
}

.stats-row-inner {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  text-align: center;
}

.stat-item {}

.stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ── Data source banner ── */
.datasource-banner {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  padding: 12px 20px;
  font-size: 13px;
  color: #166534;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

/* ── Section label ── */
.section-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

/* ── Footer columns ── */
.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  text-align: left;
  margin-bottom: var(--space-3);
}

.footer-col-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
  margin-bottom: 10px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  line-height: 1.4;
}

.footer-col a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

@media (max-width: 768px) {
  .footer-cols {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-row-inner {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .nav-links .nav-text-links {
    display: none;
  }
}

@media (max-width: 480px) {
  .footer-cols {
    grid-template-columns: 1fr;
  }
}