/* =========================================================
   ScanMySEO standalone primary navigation — dark theme
   Isolated from the legacy page styles used by older templates.
   ========================================================= */
:root {
  --brand-primary: #1e90ff;
  --brand-secondary: #00bfff;
  --site-header-height: 72px;
  --nav-bg: #11182b;
  --nav-panel: #151e35;
  --nav-text: #f3f8ff;
  --nav-muted: #afc0d5;
  --nav-border: rgba(177, 211, 245, 0.14);
  --nav-border-strong: rgba(95, 210, 255, 0.38);
  --nav-hover-bg: rgba(95, 210, 255, 0.09);
  --nav-active-bg: rgba(95, 210, 255, 0.13);
  --nav-secondary-bg: rgba(255, 255, 255, 0.045);
  --nav-overlay: rgba(0, 0, 0, 0.64);
  --nav-focus: rgba(95, 210, 255, 0.48);
  --nav-logo-bg: #ffffff;
  --nav-logo-border: rgba(255, 255, 255, 0.14);
  --nav-shadow: 0 8px 30px rgba(0, 0, 0, 0.28);
  --nav-layer-header: 12000;
  --nav-layer-drawer: 11999;
  --nav-layer-overlay: 11998;
}

html {
  scroll-padding-top: calc(var(--site-header-height, 72px) + 16px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--nav-layer-header);
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--nav-border);
  background: var(--nav-bg);
  box-shadow: var(--nav-shadow);
  color: var(--nav-text);
  text-align: left;
  isolation: isolate;
}

.site-header,
.site-header * {
  box-sizing: border-box;
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2rem);
  width: min(100%, 1280px);
  min-height: var(--site-header-height, 72px);
  margin: 0 auto;
  padding: 0 24px;
}

.site-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 4px 8px;
  border: 1px solid var(--nav-logo-border);
  border-radius: 12px;
  text-decoration: none !important;
  box-shadow: 0 4px 16px rgba(7, 17, 31, 0.08);
}

.site-brand:focus-visible,
.site-header a:focus-visible,
.site-header button:focus-visible {
  outline: 3px solid var(--nav-focus);
  outline-offset: 3px;
}

.site-brand #logo-image,
.site-brand__logo {
  display: block;
  width: auto;
  max-width: 142px;
  height: auto;
  max-height: 40px;
  margin: 0;
  object-fit: contain;
}

.primary-nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(1rem, 2.2vw, 1.75rem);
  min-width: 0;
  margin: 0;
  padding: 0;
  background: transparent;
}

.primary-nav__links {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: 0.18rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header .primary-nav__links > li {
  margin: 0;
  padding: 0;
}

.primary-nav__link {
  position: relative;
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 0.72rem;
  border-radius: 9px;
  color: var(--nav-muted) !important;
  font-family: "Montserrat", sans-serif;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none !important;
  white-space: nowrap;
  transition: color 160ms ease, background-color 160ms ease;
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible {
  background: var(--nav-hover-bg);
  color: var(--nav-text) !important;
}

.primary-nav__link[aria-current="page"] {
  background: var(--nav-active-bg);
  color: var(--nav-text) !important;
}

.primary-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 0.72rem;
  bottom: 3px;
  left: 0.72rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand-primary), var(--brand-secondary));
}

.primary-nav__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.55rem;
}

.primary-nav__action {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0.62rem 0.9rem;
  border: 1px solid transparent;
  border-radius: 10px;
  font-family: "Montserrat", sans-serif;
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.15;
  text-align: center;
  text-decoration: none !important;
  white-space: nowrap;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.primary-nav__action--secondary {
  border-color: var(--nav-border);
  background: var(--nav-secondary-bg);
  color: var(--nav-text) !important;
}

.primary-nav__action--secondary:hover,
.primary-nav__action--secondary:focus-visible {
  border-color: var(--nav-border-strong);
  background: var(--nav-hover-bg);
  color: var(--nav-text) !important;
}

.primary-nav__action--primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  color: #ffffff !important;
  box-shadow: 0 8px 20px rgba(30, 144, 255, 0.24);
}

.primary-nav__action--primary:hover,
.primary-nav__action--primary:focus-visible {
  color: #ffffff !important;
  transform: translateY(-1px);
  box-shadow: 0 11px 25px rgba(30, 144, 255, 0.32);
}

.primary-nav__mobile-label {
  display: none;
}

.site-header .nav-toggle {
  position: relative;
  top: auto;
  right: auto;
  z-index: auto;
  display: none;
  width: 44px;
  height: 44px;
  place-items: center;
  justify-self: end;
  margin: 0;
  padding: 0;
  border: 1px solid var(--nav-border);
  border-radius: 11px;
  background: var(--nav-secondary-bg);
  color: var(--nav-text);
  box-shadow: none;
  cursor: pointer;
}

.site-header .nav-toggle:hover:not(:disabled) {
  border-color: var(--nav-border-strong);
  background: var(--nav-hover-bg);
  color: var(--nav-text);
  cursor: pointer;
}

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 180ms ease, opacity 140ms ease;
}

.nav-toggle__icon {
  position: relative;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__icon::before { top: -6px; }
.nav-toggle__icon::after { top: 6px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__icon {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  inset: var(--site-header-height, 72px) 0 0;
  z-index: var(--nav-layer-overlay);
  display: block;
  width: auto;
  height: auto;
  margin: 0;
  background: var(--nav-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms ease, visibility 180ms ease;
}

.nav-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.primary-nav[hidden],
.nav-overlay[hidden] {
  display: none !important;
}

body.nav-open {
  overflow: hidden;
  overscroll-behavior: none;
}

body > .reading-progress-container {
  top: var(--site-header-height, 72px);
  z-index: calc(var(--nav-layer-overlay) - 1);
}

@media (max-width: 960px) {
  :root {
    --site-header-height: 64px;
  }

  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.75rem;
    padding: 0 14px;
  }

  .site-brand {
    width: fit-content;
    padding: 3px 7px;
    border-radius: 10px;
  }

  .site-brand #logo-image,
  .site-brand__logo {
    max-width: 124px;
    max-height: 36px;
  }

  .site-header .nav-toggle {
    display: grid;
  }

  .primary-nav {
    position: fixed;
    top: var(--site-header-height, 64px);
    right: 0;
    bottom: 0;
    z-index: var(--nav-layer-drawer);
    display: block;
    width: min(92vw, 360px);
    min-width: 0;
    height: auto;
    margin: 0;
    padding: 1.05rem 1rem 1.25rem;
    overflow-x: hidden;
    overflow-y: auto;
    border: 0;
    border-left: 1px solid var(--nav-border);
    border-radius: 0;
    background: var(--nav-panel);
    box-shadow: -18px 0 46px rgba(7, 17, 31, 0.28);
    transform: translateX(104%);
    transition: transform 210ms cubic-bezier(0.22, 0.75, 0.25, 1);
    overscroll-behavior: contain;
  }

  .primary-nav.is-open {
    transform: translateX(0);
  }

  .primary-nav__mobile-label {
    display: block;
    margin: 0 0 0.75rem;
    padding: 0 0.25rem 0.75rem;
    border-bottom: 1px solid var(--nav-border);
    color: var(--nav-muted);
    font-family: "Montserrat", sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .primary-nav__links {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.32rem;
    width: 100%;
  }

  .primary-nav__link {
    width: 100%;
    min-height: 48px;
    justify-content: flex-start;
    padding: 0.72rem 0.85rem;
    font-size: 0.92rem;
    white-space: normal;
  }

  .primary-nav__link[aria-current="page"]::after {
    top: 50%;
    right: auto;
    bottom: auto;
    left: 0;
    width: 3px;
    height: 22px;
    transform: translateY(-50%);
  }

  .primary-nav__actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.55rem;
    width: 100%;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--nav-border);
  }

  .primary-nav__action {
    width: 100%;
    min-height: 48px;
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .primary-nav,
  .primary-nav__link,
  .primary-nav__action,
  .nav-toggle__icon,
  .nav-toggle__icon::before,
  .nav-toggle__icon::after,
  .nav-overlay {
    transition: none !important;
  }

  .primary-nav__action--primary:hover,
  .primary-nav__action--primary:focus-visible {
    transform: none;
  }
}