/* ===== MODERN TYPEAHEAD DROPDOWN - FLUENT DESIGN ===== */
.typeahead-dropdown,
.dropdown-menu {
    /* Fluent Design Elevation */
    --dropdown-elevation: 0 6.4px 14.4px rgba(0, 0, 0, 0.13), 0 1.2px 3.6px rgba(0, 0, 0, 0.08);
    --dropdown-elevation-hover: 0 8px 18px rgba(0, 0, 0, 0.16), 0 1.5px 4.5px rgba(0, 0, 0, 0.1);
    
    /* Fluent Animation */
    --dropdown-transition: 0.1s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Fluent Colors */
    --dropdown-bg: #ffffff;
    --dropdown-hover: #f3f2f1;
    --dropdown-active: #edebe9;
    --dropdown-selected: #e6f2fa;
    --dropdown-border: #edebe9;
    --dropdown-text: #323130;
    --dropdown-text-secondary: #605e5c;
    --dropdown-divider: #edebe9;
    --dropdown-focus: #0078d4;
    --dropdown-accent: #0078d4;
    
    /* Reset & Positioning */
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 1000;
    display: none;
    min-width: 200px;
    max-width: 400px;
    margin: 4px 0 0;
    padding: 4px 0;
    
    /* Fluent Design System */
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dropdown-bg);
    border: 1px solid var(--dropdown-border);
    border-radius: 4px;
    box-shadow: var(--dropdown-elevation);
    
    /* Modern UX */
    list-style: none;
    animation: dropdownFadeIn 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: top center;
    
    /* Performance */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Right-aligned dropdown */
.dropdown-menu.pull-right {
    right: 0;
    left: auto;
}

/* Scrollable dropdown */
.dropdown-menu.scroll {
    max-height: 280px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 4px 0;
    
    /* Modern Scrollbar */
    scrollbar-width: thin;
    scrollbar-color: #c8c6c4 #f3f2f1;
}

/* Webkit Scrollbar Styling */
.dropdown-menu.scroll::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.dropdown-menu.scroll::-webkit-scrollbar-track {
    background: #f3f2f1;
    border-radius: 3px;
}

.dropdown-menu.scroll::-webkit-scrollbar-thumb {
    background: #c8c6c4;
    border-radius: 3px;
    transition: var(--dropdown-transition);
}

.dropdown-menu.scroll::-webkit-scrollbar-thumb:hover {
    background: #a19f9d;
}

/* Dropdown Items */
.dropdown-menu a,
.dropdown-menu .dropdown-item {
    display: block;
    padding: 8px 16px;
    clear: both;
    font-weight: 400;
    font-size: 14px;
    line-height: 20px;
    color: var(--dropdown-text);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all var(--dropdown-transition);
    position: relative;
    border-left: 3px solid transparent;
}

/* Item States */
.dropdown-menu li > a:hover,
.dropdown-menu .dropdown-item:hover {
    background-color: var(--dropdown-hover);
    border-left-color: var(--dropdown-accent);
    color: var(--dropdown-text);
    cursor: pointer;
}

.dropdown-menu .active > a,
.dropdown-menu .active > a:hover,
.dropdown-menu .dropdown-item.active {
    background-color: var(--dropdown-selected);
    border-left-color: var(--dropdown-accent);
    color: var(--dropdown-text);
    font-weight: 500;
}

/* Keyboard focus state */
.dropdown-menu li > a:focus-visible,
.dropdown-menu .dropdown-item:focus-visible {
    outline: 2px solid var(--dropdown-focus);
    outline-offset: -2px;
    background-color: var(--dropdown-hover);
}

/* Disabled state */
.dropdown-menu .disabled > a,
.dropdown-menu .dropdown-item.disabled {
    opacity: 0.5;
    pointer-events: none;
    color: var(--dropdown-text-secondary);
}

/* Faded text within items */
.dropdown-menu li > a:hover .faded,
.dropdown-menu .active > a .faded,
.dropdown-menu .active > a:hover .faded,
.dropdown-menu .dropdown-item:hover .faded,
.dropdown-menu .dropdown-item.active .faded {
    color: var(--dropdown-text-secondary);
}

/* Divider */
.dropdown-menu .divider {
    height: 1px;
    margin: 6px 0;
    overflow: hidden;
    background-color: var(--dropdown-divider);
    border: none;
}

/* Remove old border-top style */
.dropdown-menu li + li {
    border-top: none;
}

/* Add subtle separator between items (optional) */
.dropdown-menu:not(.no-separators) li + li > a,
.dropdown-menu:not(.no-separators) li + li > .dropdown-item {
    border-top: 1px solid transparent;
}

/* Group headers */
.dropdown-menu .dropdown-header {
    display: block;
    padding: 6px 16px;
    font-size: 12px;
    font-weight: 600;
    line-height: 16px;
    color: var(--dropdown-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: #faf9f8;
    margin-top: 4px;
}

.dropdown-menu .dropdown-header:first-child {
    margin-top: 0;
}

/* Icons in dropdown items */
.dropdown-menu .dropdown-item i,
.dropdown-menu .dropdown-item svg,
.dropdown-menu a i,
.dropdown-menu a svg {
    margin-right: 8px;
    width: 16px;
    height: 16px;
    vertical-align: middle;
    color: var(--dropdown-text-secondary);
    transition: var(--dropdown-transition);
}

.dropdown-menu .dropdown-item:hover i,
.dropdown-menu .dropdown-item:hover svg,
.dropdown-menu a:hover i,
.dropdown-menu a:hover svg {
    color: var(--dropdown-text);
}

/* Checkmarks for selected items */
.dropdown-menu .selected > a::after,
.dropdown-menu .dropdown-item.selected::after {
    content: "✓";
    float: right;
    color: var(--dropdown-accent);
    font-weight: 600;
}

/* Animation */
@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .dropdown-menu {
        position: fixed;
        top: auto;
        left: 16px;
        right: 16px;
        bottom: 16px;
        width: auto;
        max-width: none;
        max-height: 50vh;
        border-radius: 8px;
        box-shadow: var(--dropdown-elevation-hover);
    }
    
    .dropdown-menu.scroll {
        max-height: 40vh;
    }
    
    .dropdown-menu a,
    .dropdown-menu .dropdown-item {
        padding: 12px 16px;
        font-size: 16px; /* Better touch target */
        white-space: normal;
        word-break: break-word;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .dropdown-menu {
        --dropdown-bg: #2b2b2b;
        --dropdown-hover: #3b3b3b;
        --dropdown-active: #404040;
        --dropdown-selected: #1e3b4a;
        --dropdown-border: #404040;
        --dropdown-text: #ffffff;
        --dropdown-text-secondary: #c8c6c4;
        --dropdown-divider: #404040;
        background: var(--dropdown-bg);
        border-color: var(--dropdown-border);
    }
    
    .dropdown-menu .dropdown-header {
        background: #333333;
        color: #c8c6c4;
    }
    
    .dropdown-menu.scroll::-webkit-scrollbar-track {
        background: #333333;
    }
    
    .dropdown-menu.scroll::-webkit-scrollbar-thumb {
        background: #666666;
    }
}

/* Print styles */
@media print {
    .dropdown-menu {
        display: none !important;
    }
}

/* High contrast mode support */
@media (forced-colors: active) {
    .dropdown-menu {
        border: 1px solid WindowText;
    }
    
    .dropdown-menu li > a:hover,
    .dropdown-menu .active > a {
        forced-color-adjust: none;
        background: Highlight;
        color: HighlightText;
    }
}

/* Small height screens */
@media (max-height: 480px) {
    .dropdown-menu.scroll {
        max-height: 160px;
    }
}

/* Optional: Compact mode */
.dropdown-menu.compact {
    padding: 2px 0;
}

.dropdown-menu.compact a,
.dropdown-menu.compact .dropdown-item {
    padding: 4px 12px;
    font-size: 13px;
    line-height: 18px;
}

/* Optional: Card-style dropdown */
.dropdown-menu.card-style {
    border: none;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    padding: 8px 0;
}

/* Loading state within dropdown */
.dropdown-menu.loading {
    min-height: 80px;
    background-image: linear-gradient(90deg, transparent 40%, rgba(0,120,212,0.1) 50%, transparent 60%);
    background-size: 200% 100%;
    animation: loadingShimmer 1.5s infinite;
}

@keyframes loadingShimmer {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

/* Empty state */
.dropdown-menu .empty-state {
    padding: 24px 16px;
    text-align: center;
    color: var(--dropdown-text-secondary);
    font-style: italic;
}