/* ApexGraf sticky nav — full-width rail + desktop dropdowns + mobile hamburger. */

@keyframes am-menu-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.am-nav-wrap {
  position: sticky;
  top: 0;
  z-index: 40;
  width: 100%;
  background: var(--am-nav-bg);
  border-bottom: 1.5px solid var(--am-border);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--am-white) 55%, transparent);
}

/* Topic Path: nav peeks away for content space; hover top edge to overlay (no layout shift). */
body.am-tp-page {
  --am-nav-sticky-offset: 0px;
}

body.am-tp-page > .am-nav-wrap {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  width: 100%;
  transform: translate3d(0, -100%, 0);
  transition: transform 0.34s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.34s ease;
  will-change: transform;
  pointer-events: none;
}

body.am-tp-page.am-nav-revealed > .am-nav-wrap {
  transform: translate3d(0, 0, 0);
  pointer-events: auto;
  box-shadow:
    0 1px 0 color-mix(in srgb, var(--am-white) 55%, transparent),
    0 12px 28px color-mix(in srgb, var(--am-ink) 14%, transparent);
}

.am-nav-peek-zone {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 14px;
  z-index: 119;
  pointer-events: auto;
}

body.am-tp-page.am-nav-revealed .am-nav-peek-zone {
  height: 0;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  body.am-tp-page > .am-nav-wrap {
    transition: none;
  }
}

.am-nav {
  position: relative;
  width: var(--am-page-width);
  max-width: none;
  margin: 0 auto;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0 2px;
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  box-shadow: none;
}

.am-nav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  margin-right: auto;
  text-decoration: none;
  color: var(--am-ink);
}

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

.am-nav__logo {
  width: 30px;
  height: 30px;
  flex: none;
}

.am-nav__divider {
  width: 1px;
  height: 20px;
  background: var(--am-border-soft);
  margin: 0 4px;
}

.am-nav__item {
  position: relative;
}

.am-nav__btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: 0;
  border-radius: var(--am-radius-pill);
  background: transparent;
  cursor: pointer;
  font: 500 0.8125rem/1.2 var(--am-font-ui);
  letter-spacing: 0;
  color: color-mix(in srgb, var(--am-ink) 82%, transparent);
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.am-nav__btn:hover,
.am-nav__btn.is-open {
  background: var(--am-wash);
  color: var(--am-navy);
  text-decoration: none;
}

.am-nav__btn--signin {
  text-decoration: none;
  background: var(--am-soft-accent);
  color: var(--am-ink);
  font-weight: 500;
}

.am-nav__btn--signin:hover {
  background: color-mix(in srgb, var(--am-soft-accent) 80%, var(--am-accent));
  color: var(--am-navy);
}

.am-nav__btn--cta {
  text-decoration: none;
  background: var(--am-navy);
  color: #fff;
  font-weight: 600;
}

.am-nav__btn--cta:hover,
.am-nav__btn--cta:focus-visible {
  background: color-mix(in srgb, var(--am-navy) 88%, #000);
  color: #fff;
}

.am-nav__row--cta {
  background: color-mix(in srgb, var(--am-navy) 8%, transparent);
  border-radius: 12px;
}

.am-nav__btn--signin svg.am-nav__lock,
.am-nav__lock {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.am-nav__chevron {
  display: inline-block;
  font-size: 0.5625rem;
  opacity: 0.6;
  transition: transform 0.2s ease;
}

.am-nav__btn.is-open .am-nav__chevron {
  transform: rotate(180deg);
}

.am-nav__settings {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 0;
  background: var(--am-wash);
  margin-left: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s ease;
  position: relative;
  color: var(--am-ink);
  padding: 0;
}

.am-nav__settings:hover,
.am-nav__settings.is-open {
  background: color-mix(in srgb, var(--am-wash) 70%, var(--am-border));
}

.am-nav__settings svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
}

.am-nav__hamburger {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 0;
  background: var(--am-wash);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  flex: none;
  padding: 0;
}

.am-nav__hamburger-bar {
  width: 18px;
  height: 2px;
  background: var(--am-ink);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.am-nav.is-mobile-open .am-nav__hamburger-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.am-nav.is-mobile-open .am-nav__hamburger-bar:nth-child(2) {
  opacity: 0;
}

.am-nav.is-mobile-open .am-nav__hamburger-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.am-nav.is-mobile-open ~ .am-nav__mobile-panel {
  display: block;
}

.am-nav__panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 340px;
  max-width: calc(100vw - 32px);
  max-height: 70vh;
  overflow-y: auto;
  background: var(--am-white);
  border: 1px solid var(--am-border-soft);
  border-radius: var(--am-radius-xl);
  box-shadow: var(--am-shadow-menu);
  padding: 10px;
  z-index: 10;
  animation: am-menu-fade 0.16s ease-out;
}

.am-nav__panel[hidden] {
  display: none !important;
}

.am-nav__panel--topics {
  width: 560px;
}

.am-nav__panel--settings {
  width: 220px;
}

.am-nav__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
}

.am-nav__panel--topics .am-nav__grid {
  grid-template-columns: 1fr 1fr;
}

.am-nav__row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px;
  border-radius: var(--am-radius-md);
  text-decoration: none;
  color: var(--am-ink);
  border: 0;
  background: transparent;
  width: 100%;
  text-align: left;
  cursor: default;
  font: inherit;
  transition: background 0.12s ease;
}

a.am-nav__row,
button.am-nav__row--link {
  cursor: pointer;
}

.am-nav__row:hover {
  background: var(--am-wash);
}

.am-nav__row--indent {
  padding-left: 34px;
}

.am-nav__row-label {
  font: 500 0.875rem/1.25 var(--am-font-ui);
  color: var(--am-ink);
}

.am-nav__row-meta {
  font: 400 0.75rem/1.3 var(--am-font-body);
  color: var(--am-ink);
  opacity: 0.55;
  margin-top: 2px;
}

.am-nav__group {
  font: 600 0.6875rem/1 var(--am-font-ui);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--am-ink);
  opacity: 0.45;
  padding: 10px 12px 4px;
}

.am-nav__desktop {
  display: contents;
}

.am-nav__mobile-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--am-white);
  border: 0;
  border-top: 1px solid var(--am-border-soft);
  border-bottom: 1.5px solid var(--am-border);
  border-radius: 0;
  box-shadow: var(--am-shadow-menu);
  padding: 10px max(16px, calc((100% - var(--am-page-width)) / 2 + 2px)) 14px;
  z-index: 10;
  max-height: 75vh;
  overflow-y: auto;
  animation: am-menu-fade 0.16s ease-out;
}

.am-nav.is-mobile-open ~ .am-nav__mobile-panel {
  display: block;
}

.am-nav__mobile-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 10px;
  border-radius: 12px;
  cursor: pointer;
  font: 500 0.8125rem/1.2 var(--am-font-ui);
  letter-spacing: 0;
  color: color-mix(in srgb, var(--am-ink) 82%, transparent);
  border: 0;
  background: transparent;
  width: 100%;
  transition: background 0.18s ease, color 0.18s ease;
}

.am-nav__mobile-section.is-open .am-nav__mobile-top,
.am-nav__mobile-top:hover {
  color: var(--am-navy);
  background: var(--am-wash);
}

.am-nav__mobile-children {
  display: none;
  padding: 2px 4px 8px;
  flex-direction: column;
  gap: 2px;
}

.am-nav__mobile-section.is-open .am-nav__mobile-children {
  display: flex;
}

.am-nav__mobile-section.is-open .am-nav__chevron {
  transform: rotate(180deg);
}

@media (max-width: 1280px) {
  .am-nav {
    width: 100%;
    padding: 0 12px;
    box-sizing: border-box;
  }
}

@media (max-width: 640px) {
  .am-nav-wrap {
    border-bottom-color: var(--am-border-soft);
  }

  .am-nav {
    width: 100%;
    min-height: 54px;
    padding: 0 12px;
    box-sizing: border-box;
  }

  .am-nav__mobile-panel {
    padding-left: 16px;
    padding-right: 16px;
  }

  .am-nav__desktop {
    display: none !important;
  }

  .am-nav__hamburger {
    display: flex;
  }

  .am-nav__divider {
    display: none;
  }
}

@media (min-width: 641px) {
  .am-nav__mobile-panel {
    display: none !important;
  }
}