/* ========================================================
   1. CORE STRUCTURE & TRIGGER BADGE LAYOUT
   ======================================================== */
.nav-dropdown-wrapper {
    position: relative;
    display: inline-block;
}

.dynamic-dropdown-btn {
    cursor: pointer;
    border: none;
    outline: none;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    background: var(--card-bg);
}

.nav-dropdown-wrapper:hover .dynamic-dropdown-btn {
    color: var(--accent);
    box-shadow: var(--neumorphic-inner);
}

/* ========================================================
   2. DROPDOWN CONTAINERS (ROOT & NESTED FLYOUTS)
   ======================================================== */
/* --- THE MAIN TIMELINE ROOT MENU TIER --- */
ul.dropdown-content-menu {
    list-style: none;
    position: absolute;
    top: 110%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    min-width: 240px;
    border-radius: 1.5rem; /* Smoother corner curves */
    padding: 0.6rem;
    z-index: 9999;
    
    /* Clear parent layer for hardware-composited layer rendering compatibility */
    background: transparent; 
    border: none;
    box-shadow: none;
    
    /* Pre-rendered hidden visibility prevents browser rendering lag pop */
    pointer-events: none;
    visibility: hidden;
    transition: transform var(--t) ease, visibility 0s linear var(--t);
}

/* --- THE NESTED CASCADING SIDE-FLYOUTS --- */
ul.nested-flyout-menu {
    list-style: none;
    position: absolute;
    top: -6px; 
    left: 102%; 
    min-width: 250px;
    border-radius: 1.5rem; /* Smoother corner curves */
    padding: 0.6rem;
    transform: translateX(10px);
    z-index: 10000; 
    
    /* Clear parent layer for hardware-composited layer rendering compatibility */
    background: transparent;
    border: none;
    box-shadow: none;
    
    /* Pre-rendered hidden visibility prevents browser rendering lag pop */
    pointer-events: none;
    visibility: hidden;
    transition: transform 300ms ease, visibility 0s linear 300ms;
}

/* ========================================================
   3. INDEPENDENT BACKGROUND BEZELS (PRE-RENDERED GLASS SYSTEM)
   ======================================================== */
/* Generates individual compositing graphics layers so both boxes blur cleanly */
ul.dropdown-content-menu::before,
ul.nested-flyout-menu::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 1.5rem; /* Matches parent rounding */
    z-index: -1; /* Layer behind item button link text */
    
    /* Adaptive white glass tokens */
    background: rgba(255, 255, 255, 0.08); 
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
    
    /* Smoothly crossfades lighting opacity while heavy blur stays cached */
    opacity: 0;
    transition: opacity 250ms ease;
}

/* ========================================================
   4. HOVER INTERACTION MECHANICS & ANIMATION STATES
   ======================================================== */
/* --- ROOT MENU REVEAL CONTROLS --- */
.nav-dropdown-wrapper:hover ul.dropdown-content-menu {
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
    transition-delay: 0s;
}
.nav-dropdown-wrapper:hover ul.dropdown-content-menu::before {
    opacity: 1;
}

/* --- SUBMENU FLYOUT REVEAL CONTROLS --- */
li.has-nested-submenu:hover ul.nested-flyout-menu {
    visibility: visible;
    pointer-events: auto;
    transform: translateX(0);
    transition-delay: 0s;
}
li.has-nested-submenu:hover ul.nested-flyout-menu::before {
    opacity: 1;
}

/* ========================================================
   5. MENU BUTTON TYPOGRAPHY & LIST SELECTION LINKS
   ======================================================== */
.dropdown-content-menu li {
    position: relative; 
    width: 100%;
}

/* Standard nested typography blueprints */
.dropdown-content-menu button {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    padding: 0.8rem 1.25rem;
    text-align: left;
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 50px; /* Rounded pill dropdown menu item */
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
    transition: all var(--t) cubic-bezier(0.25, 1, 0.5, 1);
}

/* --- TEARDOWN OPTIMIZATION: SUBMENU TEXT VISIBILITY --- */
ul.nested-flyout-menu button {
    opacity: 0;
    visibility: hidden;
    transition: opacity 150ms ease, visibility 0s linear 150ms;
}

li.has-nested-submenu:hover ul.nested-flyout-menu button {
    opacity: 1;
    visibility: visible;
    transition: opacity 200ms ease 100ms, visibility 0s linear 0s;
}

/* --- HIGHLIGHT STATES: ACCENT THEME SOLID COLOR --- */
.dropdown-content-menu button:hover,
.dropdown-content-menu .nested-trigger-item:hover,
.nested-flyout-menu button:hover {
    background: var(--accent) !important; 
    color: #ffffff !important; 
    padding-left: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Force elements white when containing submenu row block triggers */
.has-nested-submenu:hover > .nested-trigger-item,
.has-nested-submenu:hover .sub-chevron {
    color: #ffffff !important;
}

/* ========================================================
   6. NAVIGATION PATH CHEVRONS & HIT BOX SAFETY LAYERS
   ======================================================== */
.sub-chevron {
    font-size: 0.7rem;
    opacity: 0.6;
    color: #ffffff;
    transition: transform var(--t);
}

li.has-nested-submenu:hover .sub-chevron {
    transform: translateX(3px);
}

/* --- MOUSE TRACKING AIRBRIDGES --- */
/* Horizontal protective travel spacer bridge */
.has-nested-submenu::after {
    content: '';
    position: absolute;
    top: 0;
    left: 100%;
    width: 4%;
    height: 100%;
    background: transparent;
}

/* Vertical protective gap spacer bridge below navigation bar header */
.nav-dropdown-wrapper::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 15px;
    background: transparent;
}

/* ========================================================
   7. GLOBAL TYPE SPECIFICATION INHERITANCE OVERRIDES
   ======================================================== */
.dropdown-content-menu button,
.nested-trigger-item,
.dropdown-content-menu li button {
    color: #ffffff !important;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}