/* ===== Top navigation bar ============================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid #EAECF1;
}

.site-header__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  min-height: var(--nav-h);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* Brand ----------------------------------------------------------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
}

.brand:hover {
  color: var(--ink);
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand__mark svg {
  display: block;
  width: 34px;
  height: auto;
}

.brand__name {
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.01em;
}

.brand__accent {
  color: var(--logo-blue);
}

/* Auth / account controls ---------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.site-nav .auth-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease, filter 0.16s ease;
}

.site-nav .auth-link:hover {
  color: var(--ink);
  background: rgba(14, 20, 36, 0.04);
}

.site-nav .auth-link--primary {
  color: #fff;
  background: var(--brand);
}

.site-nav .auth-link--primary:hover {
  color: #fff;
  background: var(--brand);
  filter: brightness(1.07);
}

/* button_to wraps its <button> in a <form>; keep it inline in the flex row */
.site-nav form.button_to {
  display: inline-flex;
  margin: 0;
}

.site-nav .auth-user {
  display: inline-block;
  max-width: 190px;
  overflow: hidden;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--muted-2);
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: middle;
}

@media (max-width: 560px) {
  .site-nav .auth-user {
    display: none;
  }

  .brand__name {
    font-size: 18px;
  }
}