/* Navigation */
.site-header { position: fixed; top: 0; left: 0; width: 100%; padding: 1.2rem 5%; display: flex; justify-content: space-between; align-items: center; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(16px); z-index: 1000; border-bottom: 1px solid rgba(0,0,0,0.05); }
.nav-brand { display: flex; align-items: center; gap: 0.8rem; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px; text-decoration: none; color: var(--text-dark, #0F172A); }
.nav-brand img { width: 36px; height: 36px; border-radius: 8px; }
.nav-links { display: flex; gap: 2.5rem; align-items: center; }
.nav-links a.link { font-weight: 500; font-size: 0.95rem; color: var(--text-muted, #64748B); transition: color 0.3s; text-decoration: none; }
.nav-links a.link:hover { color: var(--primary, #6C63FF); }
.nav-links a.link[aria-current="page"] { color: var(--primary, #6C63FF); font-weight: 700; }
.btn { display: inline-block; padding: 0.8rem 1.8rem; border-radius: 12px; font-weight: 600; font-size: 0.95rem; text-align: center; cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); text-decoration: none; }
.btn-primary { background: var(--primary, #6C63FF); color: #fff !important; box-shadow: 0 8px 20px rgba(108, 99, 255, 0.25); border: 2px solid var(--primary, #6C63FF); }
.btn-primary:hover { background: var(--primary-dark, #4F46E5); border-color: var(--primary-dark, #4F46E5); transform: translateY(-2px); box-shadow: 0 12px 24px rgba(108, 99, 255, 0.35); }
.btn-outline { background: transparent; color: var(--primary, #6C63FF) !important; border: 2px solid var(--primary, #6C63FF); }
.btn-outline:hover { background: var(--primary-light, #EEEDFF); }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-dark, #0F172A); margin-bottom: 5px; transition: 0.3s; }

/* Footer */
.site-footer { padding: 4rem 5% 2rem; border-top: 1px solid var(--border, #E2E8F0); background: #fff; text-align: left; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; max-width: 1200px; margin: 0 auto 3rem; }
.footer-brand { display: flex; flex-direction: column; gap: 1rem; }
.footer-brand img { width: 40px; height: 40px; border-radius: 8px; }
.footer-brand p { color: var(--text-muted, #64748B); font-size: 0.95rem; max-width: 300px; margin: 0; line-height: 1.5; }
.footer-col h3 { font-size: 1.1rem; margin-bottom: 1.2rem; color: var(--text-dark, #0F172A); font-weight: 700; }
.footer-col a { display: block; color: var(--text-muted, #64748B); font-size: 0.95rem; transition: color 0.2s; text-decoration: none; padding: 0.3rem 0; }
.footer-col a:hover { color: var(--primary, #6C63FF); }
.footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid var(--border, #E2E8F0); color: var(--text-muted, #64748B); font-size: 0.9rem; }

@media (max-width: 900px) {
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
  .footer-brand p { margin: 0 auto; }
  .footer-brand img { margin: 0 auto; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.is-open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: #fff; padding: 1rem; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
  .nav-toggle { display: block; }
}