/**
 * Mega Menu & Dropdowns - NSM Idol Live Theme
 * Obsidian Slate Luxury Architecture
 * 
 * @package NSM_Idol_Live_Theme
 * @version 6.2.0
 */

/* ==========================================================================
   1.0 - DROPDOWN INDICATOR & TRANSITIONS
   ========================================================================== */

.nav-link-dropdown {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.dropdown-chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base), color var(--transition-base);
  opacity: 0.7;
}

.nav-menu > li.menu-item-has-children:hover > a .dropdown-chevron,
.nav-menu > li.menu-item-has-children:focus-within > a .dropdown-chevron {
  transform: rotate(180deg);
  opacity: 1;
  color: var(--brand-primary);
}

/* ==========================================================================
   2.0 - COMPACT SUB-MENU DROPDOWN (Hệ thống)
   ========================================================================== */

.nav-menu > li > .sub-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 250px;
  background: #0c1222;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: 8px;
  box-shadow: 0 20px 50px -10px rgba(0, 0, 0, 0.8);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition: all var(--transition-base);
  z-index: 1000;
}

/* Hover bridge so mouse movement doesn't close dropdown */
.nav-menu > li > .sub-menu::before,
.mega-menu::before {
  content: '';
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
}

.nav-menu > li:hover > .sub-menu,
.nav-menu > li:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-menu > li > .sub-menu li {
  margin: 0;
}

.nav-menu > li > .sub-menu li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-menu > li > .sub-menu li a i,
.nav-menu > li > .sub-menu li a svg {
  width: 17px;
  height: 17px;
  color: var(--brand-primary);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.nav-menu > li > .sub-menu li a:hover {
  background: #18243e;
  color: #ffffff;
}

.nav-menu > li > .sub-menu li a:hover i,
.nav-menu > li > .sub-menu li a:hover svg {
  transform: scale(1.15);
}

/* ==========================================================================
   3.0 - MEGA MENU (Dịch vụ)
   ========================================================================== */

.mega-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  width: 820px;
  max-width: calc(100vw - 32px);
  background: #0c1222;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 22px;
  box-shadow: 0 30px 70px -10px rgba(0, 0, 0, 0.85);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: 1000;
}

.nav-menu > li.menu-item-mega:hover .mega-menu,
.nav-menu > li.menu-item-mega:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.mega-menu-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  padding: 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.mega-menu-item:hover {
  background: #16223b;
  border-color: rgba(255, 0, 80, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.mega-menu-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255, 0, 80, 0.1);
  border: 1px solid rgba(255, 0, 80, 0.25);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.mega-menu-item:hover .mega-menu-icon {
  transform: scale(1.08);
  background: rgba(255, 0, 80, 0.18);
  color: #ff3b69;
}

.mega-menu-icon i,
.mega-menu-icon svg {
  width: 20px;
  height: 20px;
}

.mega-menu-content {
  flex: 1;
}

.mega-menu-title {
  font-size: 14.5px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 3px;
  line-height: 1.3;
}

.mega-menu-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 6px;
}

.mega-menu-link-action {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand-primary);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.mega-menu-link-action i,
.mega-menu-link-action svg {
  width: 13px;
  height: 13px;
}

.mega-menu-item:hover .mega-menu-link-action {
  gap: 8px;
  color: #ff3b69;
}

/* Mobile Responsive Menu */
@media (max-width: 1024px) {
  .mega-menu {
    position: static;
    transform: none !important;
    width: 100%;
    max-width: 100%;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 8px 0;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
  }

  .nav-menu > li.menu-item-mega.active .mega-menu,
  .nav-menu > li.menu-item-has-children.active > .sub-menu {
    display: block;
  }

  .nav-menu > li > .sub-menu {
    position: static;
    transform: none !important;
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: none;
    display: none;
    margin-top: 6px;
  }

  .mega-menu-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}