:root {
  --primary: #0066cc;
  --primary-700: #0052a3;
  --accent: #4da3ff;
  --bg: #ffffff;
  --surface: #f6f8fa;
  --text: #0f1720;
  --muted: #576175;
}

.brand-name {
  letter-spacing: 0.4px;
}

.btn.primary {
  box-shadow: 0 6px 18px rgba(44, 126, 248, 0.35);
}

a { color: var(--primary); }
a:hover { opacity: 0.9; }

/* Light theme overrides */
body {
  background: #ffffff;
  color: var(--text);
}

.site-header {
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  backdrop-filter: blur(12px);
}

.nav a { 
  color: var(--text);
  border: 1px solid rgba(0,0,0,0.1);
  padding: 8px 14px;
  border-radius: 10px;
  background: rgba(255,255,255,0.5);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.nav a:hover {
  background: rgba(255,255,255,0.9);
  border-color: rgba(0, 102, 204, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.nav a[aria-current="page"] {
  background: rgba(0, 102, 204, 0.1);
  border-color: rgba(0, 102, 204, 0.3);
  color: var(--primary);
  font-weight: 600;
}

.footer-nav a { color: var(--muted); }

/* Sign In button style (inspired by saidthepet.com) */
.btn-account {
  background: linear-gradient(135deg, var(--primary), var(--primary-700)) !important;
  color: #ffffff !important;
  padding: 8px 16px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid rgba(0, 102, 204, 0.3) !important;
  box-shadow: 0 2px 12px rgba(0, 102, 204, 0.3);
  transition: all 0.2s ease;
}

.btn-account:hover {
  background: linear-gradient(135deg, var(--primary-700), var(--primary)) !important;
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.45);
  transform: translateY(-2px);
  border-color: rgba(0, 102, 204, 0.5) !important;
}

.hero {
  background: radial-gradient(1200px 600px at 20% -10%, rgba(77, 163, 255, 0.12), transparent 60%),
              radial-gradient(800px 400px at 80% 0%, rgba(0, 102, 204, 0.08), transparent 60%);
}

.section.alt {
  background: var(--surface);
  border-top: 1px solid rgba(0,0,0,0.06);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.card {
  background: #ffffff;
  border: 1px solid rgba(0,0,0,0.08);
}

input, textarea {
  background: #ffffff;
  border: 1px solid rgba(0,0,0,0.16);
  color: var(--text);
}

input:focus, textarea:focus {
  outline: 2px solid rgba(0, 102, 204, 0.25);
  border-color: rgba(0, 102, 204, 0.45);
}

.site-footer {
  background: var(--surface);
  border-top: 1px solid rgba(0,0,0,0.06);
}

/* Responsive pour mobile */
@media (max-width: 768px) {
  .footer-inner { 
    flex-direction: column; 
    gap: 12px; 
    text-align: center; 
  }
  .footer-nav { 
    display: flex; 
    flex-wrap: wrap; 
    justify-content: center; 
    gap: 8px; 
  }
  .footer-nav a { 
    margin: 0; 
    padding: 4px 8px; 
  }
}

/* Amélioration responsive grille */
@media (max-width: 600px) {
  .grid-3 { gap: 16px; }
  .hero { padding: 64px 0 32px; }
  .section { padding: 40px 0; }
  .card { padding: 16px; }
}