/* ==========================================================================
   Agent-Ready Directory — Shared Design System
   Palette: navy #004953, gold #C5961B, sand #D0C7C4
   Font: Inter via Fontshare CDN
   ========================================================================== */

/* --------------------------------------------------------------------------
   Font loading
   -------------------------------------------------------------------------- */
@import url('https://api.fontshare.com/v2/css?f[]=inter@400,500,600,700&display=swap');

/* --------------------------------------------------------------------------
   Design tokens
   -------------------------------------------------------------------------- */
:root {
  /* Core palette */
  --navy:        #004953;
  --navy-dark:   #003540;
  --navy-light:  #0a6070;
  --gold:        #C5961B;
  --gold-light:  #d9a830;
  --sand:        #D0C7C4;
  --sand-light:  #e8e3e1;
  --sand-dark:   #b8b0ac;
  --white:       #ffffff;
  --gray-50:     #f9f9f8;
  --gray-100:    #f2f1ef;
  --gray-200:    #e5e3e0;
  --gray-400:    #a09a96;
  --gray-600:    #6b6460;
  --gray-800:    #2e2a28;

  /* Semantic */
  --color-bg:           var(--sand-light);
  --color-surface:      var(--white);
  --color-primary:      var(--navy);
  --color-accent:       var(--gold);
  --color-text:         var(--gray-800);
  --color-text-muted:   var(--gray-600);
  --color-border:       var(--sand);
  --color-border-light: var(--gray-200);

  /* Typography */
  --font-family:  'Inter', system-ui, -apple-system, sans-serif;
  --text-xs:      0.75rem;
  --text-sm:      0.875rem;
  --text-base:    1rem;
  --text-lg:      1.125rem;
  --text-xl:      1.25rem;
  --text-2xl:     1.5rem;
  --text-3xl:     1.875rem;
  --text-4xl:     2.25rem;
  --text-5xl:     3rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm:  0 1px 3px rgba(0,73,83,0.08), 0 1px 2px rgba(0,73,83,0.05);
  --shadow-md:  0 4px 12px rgba(0,73,83,0.1), 0 2px 4px rgba(0,73,83,0.06);
  --shadow-lg:  0 10px 30px rgba(0,73,83,0.12), 0 4px 8px rgba(0,73,83,0.08);

  /* Transitions */
  --transition: 150ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-4); }
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  background: var(--navy);
  color: var(--white);
  padding: var(--space-4) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--white);
  font-weight: 700;
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.nav-logo:hover { text-decoration: none; opacity: 0.9; }

.nav-logo svg { width: 32px; height: 32px; flex-shrink: 0; }

.nav-badge {
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--gold);
  color: var(--navy-dark);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav-submit-btn {
  background: var(--gold);
  color: var(--navy-dark) !important;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-weight: 600 !important;
  font-size: var(--text-sm);
  transition: background var(--transition);
}

.nav-submit-btn:hover { background: var(--gold-light) !important; }

@media (max-width: 640px) {
  .nav-links { gap: var(--space-4); }
  .nav-badge { display: none; }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: var(--space-20);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.footer-brand h3 {
  color: var(--white);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.footer-brand p {
  font-size: var(--text-sm);
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  color: var(--white);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-col ul { list-style: none; }
.footer-col ul li + li { margin-top: var(--space-2); }
.footer-col ul a {
  color: rgba(255,255,255,0.65);
  font-size: var(--text-sm);
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--white); text-decoration: none; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
}
.btn-primary:hover { background: var(--navy-light); color: var(--white); text-decoration: none; }

.btn-gold {
  background: var(--gold);
  color: var(--navy-dark);
}
.btn-gold:hover { background: var(--gold-light); text-decoration: none; }

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

.btn-sm { padding: var(--space-2) var(--space-3); font-size: var(--text-xs); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-link { text-decoration: none; color: inherit; display: block; }
.card-link:hover { text-decoration: none; }

/* --------------------------------------------------------------------------
   Surface badges
   -------------------------------------------------------------------------- */
.badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.badge-verified {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.badge-unverified {
  background: var(--gray-100);
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
}

.badge-elephant {
  background: var(--gold);
  color: var(--navy-dark);
}

/* Status dot */
.badge-verified::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #10b981;
  flex-shrink: 0;
}
.badge-unverified::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gray-400);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Category chip
   -------------------------------------------------------------------------- */
.category-chip {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  background: rgba(0,73,83,0.08);
  color: var(--navy);
  border: 1px solid rgba(0,73,83,0.15);
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.form-label .optional {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.form-input,
.form-select,
.form-textarea {
  font-family: var(--font-family);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(0,73,83,0.12);
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--gray-400); }

.form-textarea { resize: vertical; min-height: 100px; }

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Search bar
   -------------------------------------------------------------------------- */
.search-wrap {
  position: relative;
  max-width: 560px;
}

.search-input {
  width: 100%;
  padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
  font-family: var(--font-family);
  font-size: var(--text-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--white);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-sm);
}

.search-input:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(0,73,83,0.12);
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Filter chips
   -------------------------------------------------------------------------- */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.filter-chip {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid var(--color-border);
  background: var(--white);
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.filter-chip:hover {
  border-color: var(--navy);
  color: var(--navy);
}

.filter-chip.active {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

/* --------------------------------------------------------------------------
   Loading state
   -------------------------------------------------------------------------- */
.skeleton {
  background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* --------------------------------------------------------------------------
   Alerts
   -------------------------------------------------------------------------- */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: 1.6;
  border-left: 4px solid;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border-color: #10b981;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border-color: #ef4444;
}

.alert-info {
  background: rgba(0,73,83,0.08);
  color: var(--navy);
  border-color: var(--navy);
}

/* --------------------------------------------------------------------------
   Section helpers
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-16) 0;
}

.section-sm { padding: var(--space-10) 0; }
.section-lg { padding: var(--space-20) 0; }

.section-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Grid layouts
   -------------------------------------------------------------------------- */
.company-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

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

/* --------------------------------------------------------------------------
   Page header
   -------------------------------------------------------------------------- */
.page-header {
  background: var(--navy);
  color: var(--white);
  padding: var(--space-16) 0;
}

.page-header h1 {
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.page-header p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.75);
  max-width: 560px;
}

@media (max-width: 768px) {
  .page-header h1 { font-size: var(--text-3xl); }
  .page-header { padding: var(--space-10) 0; }
}

/* --------------------------------------------------------------------------
   Misc utilities
   -------------------------------------------------------------------------- */
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.hidden { display: none !important; }