/* ============================================================
   nav.css — Mastery Logistics Systems Navigation Component
   Desktop styles first. Mobile overrides in @media block at bottom.
============================================================ */

/* ============================================================
   CSS VARIABLES
============================================================ */
.site-nav {
  --nav-bg:            #111111;
  --nav-height:        56px;
  --nav-link-color:    #bbbbbb;
  --nav-link-hover:    #ffffff;
  --nav-copper:        #C0532A;
  --nav-copper-light:  #fc9365;
  --nav-dropdown-bg:   #ffffff;
  --nav-border:        #eeeeee;
  --nav-border-dark:   #e8e8e8;
  --nav-text-dark:     #1a1a1a;
  --nav-text-muted:    #999999;
  --nav-mobile-bg:     #111111;
  --nav-mobile-border: #2a2a2a;
  --nav-mobile-link:   #dddddd;
  --font-nav: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  font-family: var(--font-nav);
}


/* ============================================================
   NAV BAR
============================================================ */
.nav-bar {
  background: var(--nav-bg);
  height: var(--nav-height);
  position: relative;
  z-index: 100;
}

.nav-bar__inner {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: var(--nav-height);
}


/* ============================================================
   LOGO
============================================================ */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.nav-logo img {
  width: 28px;
  height: 28px;
  display: block;
}

.nav-logo-text {
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  font-family: var(--font-nav);
}


/* ============================================================
   DESKTOP NAV LINKS — absolutely centered
============================================================ */
.nav-links {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}

.nav-item {
  display: flex;
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--nav-link-color);
  font-size: 12.5px;
  font-weight: 400;
  font-family: var(--font-nav);
  text-decoration: none;
  padding: 0 0.9rem;
  height: var(--nav-height);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s;
}

.nav-link:hover,
.nav-link[aria-expanded="true"] {
  color: var(--nav-link-hover);
}

.nav-link[aria-expanded="true"] {
  border-bottom-color: var(--nav-copper);
}

.nav-chevron {
  transition: transform 0.2s;
  color: #666666;
}

.nav-link[aria-expanded="true"] .nav-chevron {
  transform: rotate(180deg);
  color: var(--nav-copper);
}


/* ============================================================
   CTA BUTTON
============================================================ */
.nav-cta {
  background: var(--gradient-copper);
  color: #ffffff;
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-nav);
  padding: 8px 20px;
  border-radius: 10px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  margin-left: auto;
  position: relative;
  z-index: 1;
  transition: all 0.15s;
}

.nav-cta:hover {
  background: linear-gradient(135deg, #fd9e75 0%, #c06838 100%);
  transform: translateY(-1px);
}


/* ============================================================
   HAMBURGER — hidden on desktop
============================================================ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
  flex-shrink: 0;
  position: relative;
  z-index: 1001;
}

.nav-hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
  transform-origin: center;
}

.nav-hamburger[aria-expanded="true"] .nav-hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger[aria-expanded="true"] .nav-hamburger__bar:nth-child(2) {
  opacity: 0;
}

.nav-hamburger[aria-expanded="true"] .nav-hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ============================================================
   DESKTOP DROPDOWNS — bounded card
============================================================ */
.nav-dropdown {
  position: fixed;
  top: var(--nav-height);
  left: 50%;
  transform: translateX(-50%);
  background: var(--nav-dropdown-bg);
  border-radius: 0 0 12px 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.06);
  z-index: 99;
  overflow: hidden;
  min-width: 860px;
}

.nav-dropdown[hidden] {
  display: none;
}

/* Page dimmer shown while a desktop dropdown is open.
   Sits below the dropdown (99) and nav bar (1000). */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 98;
}

.nav-overlay[hidden] {
  display: none;
}

.nav-dropdown::before {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(135deg, #fc9365 0%, #b25d42 100%);
}

.nav-dropdown__inner {
  display: flex;
}

.nav-dropdown__left {
  width: 240px;
  min-width: 240px;
  border-right: 1px solid var(--nav-border);
  padding: 1.25rem 1.5rem;
  flex-shrink: 0;
}

.nav-dropdown__right {
  flex: 1;
  padding: 1.25rem 1.5rem;
}

.nav-dropdown__group-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--nav-copper);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin: 0 0 0.85rem 0;
  font-family: var(--font-nav);
}

.nav-dropdown__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.45rem 0;
  border-bottom: 0.5px solid #f0f0f0;
  text-decoration: none;
}

.nav-dropdown__item:last-child { border-bottom: none; }

.nav-dropdown__item img {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav-dropdown__item-name {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--nav-text-dark);
  font-family: var(--font-nav);
  transition: color 0.15s;
}

.nav-dropdown__item-desc {
  display: block;
  font-size: 11px;
  color: var(--nav-text-muted);
  font-family: var(--font-nav);
  margin-top: 1px;
  line-height: 1.35;
  transition: color 0.15s;
}

.nav-dropdown__item:hover .nav-dropdown__item-name {
  color: var(--nav-copper);
}

.nav-dropdown__item:hover .nav-dropdown__item-desc {
  color: var(--nav-text-dark);
}

.nav-dropdown__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1.5rem;
}

.nav-dropdown__serve-wrap {
  padding: 1.25rem 1.5rem 1.5rem;
}

.nav-dropdown__serve-title {
  margin-bottom: 1rem;
}

.nav-dropdown__inner--serve {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.nav-serve-card {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  border: 0.5px solid var(--nav-border);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.15s;
}

.nav-serve-card:hover { border-color: var(--nav-copper); }

.nav-serve-card img {
  width: 36px;
  height: 36px;
  margin-bottom: 0.6rem;
}

.nav-serve-card__name {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--nav-text-dark);
  font-family: var(--font-nav);
  margin-bottom: 0.25rem;
  transition: color 0.15s;
}

.nav-serve-card__desc {
  display: block;
  font-size: 11px;
  color: var(--nav-text-muted);
  font-family: var(--font-nav);
  line-height: 1.45;
  transition: color 0.15s;
}

.nav-serve-card:hover .nav-serve-card__name { color: var(--nav-copper); }
.nav-serve-card:hover .nav-serve-card__desc { color: var(--nav-text-dark); }


/* ============================================================
   MOBILE MENU — full screen overlay
============================================================ */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  /* Above the site header (1000) so the in-menu header — logo +
     close button — is the only header while the menu is open,
     regardless of scroll position. */
  z-index: 1002;
  overflow-y: auto;
  background: var(--nav-mobile-bg);
}

.mobile-menu.is-open {
  display: block;
}

/* In-menu header: logo (links home) left, close button right. Sits
   in flow above the panels, replacing the old nav-height spacer. */
.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 24px;
  border-bottom: 0.5px solid var(--nav-mobile-border);
}

.mobile-menu__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.mobile-menu__logo img {
  width: 28px;
  height: 28px;
  display: block;
}

.mobile-menu__logo-text {
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  font-family: var(--font-nav);
}

.mobile-menu__close {
  background: none;
  border: none;
  padding: 8px;
  margin-right: -8px;
  color: #ffffff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  font-family: var(--font-nav);
}

.mobile-menu__close:hover {
  color: var(--nav-copper-light);
}

.mobile-menu .mobile-panel {
  display: none;
}

.mobile-menu.show-main    #mobile-panel-main     { display: block; }
.mobile-menu.show-platform #mobile-panel-platform { display: block; }
.mobile-menu.show-serve   #mobile-panel-serve    { display: block; }

.mobile-menu__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 24px;
  border: none;
  border-bottom: 0.5px solid var(--nav-mobile-border);
  background: none;
  text-decoration: none;
  cursor: pointer;
}

.mobile-menu__label {
  font-size: 16px;
  font-weight: 500;
  color: #ffffff;
  font-family: var(--font-nav);
}

.mobile-menu__arrow {
  font-size: 14px;
  color: #555555;
}

.mobile-menu__cta {
  padding: 24px;
}

.mobile-menu__cta-btn {
  display: block;
  width: 100%;
  background: var(--gradient-copper);
  color: #ffffff;
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-nav);
  padding: 14px;
  border-radius: 10px;
  text-align: center;
  text-decoration: none;
}

.mobile-back {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 16px 24px;
  border: none;
  border-bottom: 0.5px solid var(--nav-mobile-border);
  background: #0a0a0a;
  cursor: pointer;
}

.mobile-back__arrow {
  font-size: 16px;
  color: var(--nav-copper-light);
}

.mobile-back__label {
  font-size: 14px;
  font-weight: 500;
  color: var(--nav-copper-light);
  font-family: var(--font-nav);
}

.mobile-panel__title {
  font-size: 20px;
  font-weight: 500;
  color: #ffffff;
  font-family: var(--font-nav);
  padding: 22px 24px 18px;
  border-bottom: 0.5px solid var(--nav-mobile-border);
  margin: 0;
}

.mobile-panel__group-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--nav-copper-light);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  padding: 16px 24px 6px;
  margin: 0;
  font-family: var(--font-nav);
}

.mobile-panel__group-label--bordered {
  border-top: 0.5px solid var(--nav-mobile-border);
}

.mobile-panel__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 0.5px solid var(--nav-mobile-border);
  text-decoration: none;
}

.mobile-panel__link:last-child { border-bottom: none; }

.mobile-panel__link span:first-child {
  font-size: 15px;
  color: var(--nav-mobile-link);
  font-family: var(--font-nav);
}

.mobile-panel__link-arrow {
  font-size: 13px;
  color: #444444;
}


/* ============================================================
   RESPONSIVE — MOBILE OVERRIDES
============================================================ */
@media (max-width: 768px) {

  .nav-bar__inner {
    padding: 0 1rem;
  }

  /* Hide desktop elements */
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-dropdown { display: none !important; }

  /* Show hamburger — right aligned via margin-left: auto on the element */
  .nav-hamburger {
    display: flex;
  }

}