/* Header bersama. Perbarui markup melalui partials/header.html dan sync-navigation.py. */
html {
  scroll-padding-top: 110px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--md-bg);
  border-bottom: 1px solid var(--md-border);
}

.site-header .header-inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  height: auto;
  min-height: 89px;
  gap: 18px;
}

.site-header .brand {
  width: var(--md-logo-width);
  justify-self: start;
}

.site-tagline {
  margin: 0 0 0 9px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--md-muted);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
  min-width: 0;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 48px;
  padding: 12px 13px;
  color: var(--md-muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  border-radius: 7px 7px 0 0;
  transition: color .18s, background .18s;
}

.site-nav a:hover {
  color: var(--md-text);
  background: var(--md-surface);
}

.site-nav a[aria-current="page"] {
  color: var(--md-text);
  font-weight: 700;
}

.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 13px;
  right: 13px;
  height: 2px;
  border-radius: 2px;
  background: var(--md-accent);
}

.site-nav a:focus-visible,
.site-auth a:focus-visible,
.site-header .brand:focus-visible {
  outline: 2px solid var(--md-accent);
  outline-offset: 4px;
}

.site-auth {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-left: 18px;
  border-left: 1px solid var(--md-border);
}

.site-auth a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: var(--md-button-radius);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  white-space: nowrap;
  transition: background .18s, border-color .18s;
}

.auth-login-link { color: var(--md-text); }
.auth-login-link:hover,
.auth-login-link[aria-current="page"] { border-color: #57695c; background: var(--md-surface); }
.auth-signup-link { background: var(--md-button-accent); color: var(--md-on-accent); }
.auth-signup-link:hover { background: var(--md-button-accent-hover); }
.auth-signup-link[aria-current="page"] { box-shadow: 0 0 0 2px var(--md-bg), 0 0 0 3px var(--md-accent); }

@media (max-width: 1100px) {
  .site-tagline { display: none; }
  .site-header .header-inner { grid-template-columns: auto minmax(0, 1fr) auto; }
}

@media (max-width: 900px) {
  html { scroll-padding-top: 134px; }
  .site-header .header-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 5px 16px;
    min-height: 0;
    padding-top: 12px;
  }
  .site-header .brand { width: var(--md-logo-width-mobile); justify-self: start; }
  .site-auth { grid-column: 2; grid-row: 1; padding: 0; border: 0; }
  .site-auth a { min-height: 40px; font-size: 13px; padding: 9px 12px; }
  .site-nav { grid-column: 1 / -1; grid-row: 2; width: 100%; justify-content: space-between; gap: 10px; }
  .site-nav a { min-height: 44px; font-size: 13px; padding: 11px 3px; }
  .site-nav a[aria-current="page"]::after { left: 3px; right: 3px; }
}

@media (max-width: 365px) {
  .site-header .header-inner { column-gap: 10px; }
  .site-auth { gap: 5px; }
  .site-auth a { font-size: 11px; padding-inline: 9px; }
  .site-nav { gap: 7px; }
  .site-nav a { font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav a, .site-auth a { transition: none; }
}