/* ================================================
   BRIVITY — SHARED HEADER & FOOTER STYLES
   ================================================ */

/* --- HEADER --- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  height: 72px;
  background: transparent;
  border-bottom: 1px solid transparent;
  display: flex; align-items: center;
  transition: background 0.5s cubic-bezier(0.16,1,0.3,1),
              border-color 0.5s cubic-bezier(0.16,1,0.3,1),
              backdrop-filter 0.5s cubic-bezier(0.16,1,0.3,1);
}
.site-header.scrolled {
  background: rgba(6,6,11,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; justify-content: space-between; width: 100%; align-items: center; }

.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); }
.brand-logo { height: 36px; width: auto; display: block; }
.brand-text { font-family: 'Space Grotesk', sans-serif; font-size: 20px; font-weight: 800; letter-spacing: -0.5px; }

.nav { display: none; }
.nav-actions { display: none; }
.menu-btn { background: none; border: none; cursor: pointer; display: block; z-index: 10001; color: var(--text); transition: color 0.3s; padding: 8px; }
.menu-btn:hover { color: var(--accent); }

@media (min-width: 900px) {
  .brand-logo { height: 42px; width: auto; }
  .brand-text { font-size: 22px; }
  .nav { display: flex; gap: 36px; }
  .nav a {
    font-size: 13px; font-weight: 500;
    color: var(--text-secondary, var(--text-dim, #7a7a8c));
    position: relative; letter-spacing: 0.3px;
    text-decoration: none; transition: color 0.3s;
  }
  .nav a:hover, .nav a.active { color: #fff; }
  .nav a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0%; height: 2px; background: var(--accent);
    transform: none;
    transition: width 0.3s cubic-bezier(0.16,1,0.3,1); border-radius: 1px;
  }
  .nav a:hover::after, .nav a.active::after { width: 100%; }
  .nav-actions { display: block; }
  .menu-btn { display: none !important; }
}

.btn-ghost {
  display: inline-flex; align-items: center; background: transparent;
  color: var(--text-secondary, var(--text-dim, #7a7a8c));
  border: 1px solid var(--border); height: 44px; padding: 0 24px;
  font-size: 13px; font-weight: 600; border-radius: 999px;
  transition: all 0.3s cubic-bezier(0.16,1,0.3,1); cursor: pointer; text-decoration: none;
}
.btn-ghost:hover { border-color: var(--accent); color: #fff; background: rgba(26,56,212,0.05); }

/* Mobile menu */
.mobile-panel {
  position: fixed; top: 0; right: 0; width: 100%; height: 100vh;
  background: rgba(6,6,11,0.97); backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
  z-index: 10000; opacity: 0; visibility: hidden;
  transition: all 0.5s cubic-bezier(0.16,1,0.3,1);
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 28px;
}
.mobile-panel[aria-expanded="true"] { opacity: 1; visibility: visible; }
.mobile-link {
  font-size: 36px; font-weight: 800; color: var(--text); letter-spacing: -1px;
  text-decoration: none; opacity: 0; transform: translateY(30px);
  transition: 0.4s cubic-bezier(0.16,1,0.3,1);
}
.mobile-link:hover { color: var(--accent); }
.mobile-panel[aria-expanded="true"] .mobile-link { opacity: 1; transform: translateY(0); }
.mobile-panel[aria-expanded="true"] .mobile-link:nth-child(1) { transition-delay: 0.05s; }
.mobile-panel[aria-expanded="true"] .mobile-link:nth-child(2) { transition-delay: 0.1s; }
.mobile-panel[aria-expanded="true"] .mobile-link:nth-child(3) { transition-delay: 0.15s; }
.mobile-panel[aria-expanded="true"] .mobile-link:nth-child(4) { transition-delay: 0.2s; }
.mobile-panel[aria-expanded="true"] .mobile-link:nth-child(5) { transition-delay: 0.25s; }
.mobile-panel[aria-expanded="true"] .mobile-cta { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.mobile-cta { opacity: 0; transform: translateY(30px); transition: 0.4s cubic-bezier(0.16,1,0.3,1); margin-top: 16px; }
body.nav-open { overflow: hidden; }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 32px; height: 48px; border-radius: 12px;
  font-size: 14px; font-weight: 600; cursor: pointer; border: none;
  background: #1a38d4; color: #fff;
  box-shadow: 0 0 20px rgba(26,56,212,0.4);
  transition: all 0.3s cubic-bezier(0.16,1,0.3,1); text-decoration: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 40px rgba(26,56,212,0.4); background: #4a72e8; }

/* --- FOOTER --- */
.site-footer {
  background: var(--bg-elevated, var(--surface, #0d0d14));
  padding: 80px 0 40px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary, var(--text-dim, #7a7a8c));
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 60px; }
.footer-link {
  display: block; margin-bottom: 12px;
  color: var(--text-secondary, var(--text-dim, #7a7a8c));
  transition: 0.2s; text-decoration: none;
}
.footer-link:hover { color: var(--accent); }
.footer-title { font-size: 11px; font-weight: 700; text-transform: uppercase; margin-bottom: 20px; color: var(--text); letter-spacing: 1px; }
.footer-cta-box { background: var(--bg-card, var(--card, #111119)); padding: 24px; border-radius: 16px; border: 1px solid var(--border); }

@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }