Efeitos em Menus - Galeria CSS

1. Menu Slide Down

HTML:

<ul class="menu menu-slide-down">
    <li class="menu-item">
        Item 1
        <ul class="submenu">
            <li class="menu-item">Subitem 1</li>
            <li class="menu-item">Subitem 2</li>
        </ul>
    </li>
    <li class="menu-item">Item 2</li>
</ul>

CSS:

.menu-slide-down {
    overflow: hidden;
}

.menu-slide-down .submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: var(--background);
    border-top: 1px solid var(--border-color);
}

.menu-slide-down .menu-item:hover {
    background: var(--gradient);
    color: white;
}

.menu-slide-down .menu-item:hover .submenu {
    max-height: 200px;
}

2. Menu Fade In

HTML:

<ul class="menu menu-fade">
    <li class="menu-item">
        Item 1
        <ul class="submenu">
            <li class="menu-item">Subitem 1</li>
            <li class="menu-item">Subitem 2</li>
        </ul>
    </li>
    <li class="menu-item">Item 2</li>
</ul>

CSS:

.menu-fade {
    position: relative;
}

.menu-fade .submenu {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    background: var(--background);
    width: 200px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transform: translateY(10px);
}

.menu-fade .menu-item:hover {
    background: var(--primary-color);
    color: white;
}

.menu-fade .menu-item:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

3. Menu Scale

HTML:

<ul class="menu menu-scale">
    <li class="menu-item">Item 1</li>
    <li class="menu-item">Item 2</li>
</ul>

CSS:

.menu-scale .menu-item {
    transform: scale(1);
    transition: all 0.3s;
    position: relative;
    z-index: 1;
}

.menu-scale .menu-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: -1;
}

.menu-scale .menu-item:hover {
    transform: scale(1.05);
    color: white;
}

.menu-scale .menu-item:hover::before {
    opacity: 1;
}

4. Menu Border Animation

HTML:

<ul class="menu menu-border">
    <li class="menu-item">Item 1</li>
    <li class="menu-item">Item 2</li>
</ul>

CSS:

.menu-border .menu-item {
    position: relative;
    border-left: 3px solid transparent;
    transition: all 0.3s;
}

.menu-border .menu-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: all 0.3s;
}

.menu-border .menu-item:hover {
    border-left-color: var(--secondary-color);
    background: linear-gradient(to right, var(--card-bg), transparent);
    color: var(--primary-color);
}

.menu-border .menu-item:hover::after {
    width: 100%;
    left: 0;
}

5. Menu Push Effect

HTML:

<ul class="menu menu-push">
    <li class="menu-item">Item 1</li>
    <li class="menu-item">Item 2</li>
</ul>

CSS:

.menu-push .menu-item {
    transform: translateX(0);
    transition: all 0.3s;
    border-right: 3px solid transparent;
}

.menu-push .menu-item:hover {
    transform: translateX(10px);
    background: var(--card-bg);
    border-right-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: inset 4px 0 8px rgba(0,0,0,0.05);
}