/* Shared public navigation, including Services and Login. */
.nav .nav-inner { gap: 20px; }
.nav .brand, .nav .nav-cta { flex-shrink: 0; }
.nav .nav-links { gap: 20px; }
.nav .nav-links a { white-space: nowrap; }
.nav .nav-cta { display: flex; align-items: center; gap: 10px; }
.nav .menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm, 2px);
  background: var(--bg-elev, #fff);
  color: var(--text);
  cursor: pointer;
}
.nav .menu-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.nav .menu-toggle .icon-close { display: none; }
body.nav-open .nav .menu-toggle .icon-open { display: none; }
body.nav-open .nav .menu-toggle .icon-close { display: block; }
body.nav-open { overflow: hidden; }
/* The dropdown itself stays scrollable on short screens. */
body.nav-open::after { display: none; }
@media (min-width: 1201px) {
  .nav .nav-links { display: flex; }
}
@media (max-width: 1200px) {
  .nav .nav-inner { padding: 14px var(--gutter); gap: 12px; }
  .nav .menu-toggle { display: inline-flex; }
  .nav .nav-links {
    display: none;
    position: absolute;
    inset: 100% 0 auto;
    width: 100%;
    height: auto;
    max-height: calc(100dvh - 100px);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px var(--gutter) 20px;
    background: var(--bg-elev, #fff);
    border: 0;
    border-bottom: 1px solid var(--border-strong);
    box-shadow: 0 16px 24px rgba(26,26,26,0.08);
    overflow-y: auto;
    overscroll-behavior: contain;
    z-index: 50;
  }
  body.nav-open .nav .nav-links { display: flex; animation: none; }
  .nav .nav-links a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 400;
    color: var(--text);
  }
  .nav .nav-links a::after { display: none; }
  .nav .nav-links a:hover { color: var(--accent); }
}
@media (max-width: 600px) {
  .nav .nav-reg { display: none; }
  .nav .brand { gap: 10px; }
  .nav .brand-text .name { font-size: 17px; }
  .nav .brand-text small { font-size: 8px; }
}

/* Login call to action across every public header. */
.nav .nav-links a[href="https://services.sentinelresearch.co/login"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 22px;
  border: 1px solid var(--accent, #8B2331);
  border-radius: 6px;
  background: var(--accent, #8B2331);
  color: #fff;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  box-shadow: 0 3px 8px rgba(139, 35, 49, 0.14);
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.nav .nav-links a[href="https://services.sentinelresearch.co/login"]::after { display: none; }
.nav .nav-links a[href="https://services.sentinelresearch.co/login"]:hover {
  background: var(--accent-deep, #6B1A26);
  border-color: var(--accent-deep, #6B1A26);
  color: #fff;
  box-shadow: 0 4px 12px rgba(139, 35, 49, 0.22);
}
@media (min-width: 1201px) {
  .nav .nav-links { align-items: center; }
}
@media (max-width: 1200px) {
  .nav .nav-links a[href="https://services.sentinelresearch.co/login"] {
    min-height: 48px;
    margin-top: 14px;
    font-size: 15px;
  }
}