/* Mobile Bottom Navigation - nur auf Mobile sichtbar */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 0;
    z-index: 1000;
    display: none;
}

/* Verstecke auf Desktop komplett */
@media (min-width: 769px) {
    .mobile-bottom-nav {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }
    
    body {
        padding-bottom: 80px;
    }
}

/* Portfolio Submenu - nur auf Mobile */
@media (min-width: 769px) {
    .portfolio-submenu {
        display: none !important;
    }
}

.mobile-bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 12px;
    text-decoration: none;
    color: rgba(255, 255, 255, 0.7);
    transition: all 0.3s ease;
    border-radius: 12px;
    cursor: pointer;
    min-width: 60px;
}

.mobile-bottom-nav .nav-item:hover,
.mobile-bottom-nav .nav-item.active {
    color: #f03a70;
    background: rgba(240, 58, 112, 0.1);
    transform: translateY(-2px);
}

.mobile-bottom-nav .nav-item i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.mobile-bottom-nav .nav-item span {
    font-size: 0.75rem;
    font-weight: 500;
}

/* Portfolio Submenu */
.portfolio-submenu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.portfolio-submenu.active {
    opacity: 1;
    visibility: visible;
}

.submenu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.submenu-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(18, 18, 18, 0.95), rgba(0, 0, 0, 0.95));
    backdrop-filter: blur(20px);
    border-radius: 20px 20px 0 0;
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.portfolio-submenu.active .submenu-content {
    transform: translateY(0);
}

.submenu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.submenu-header h3 {
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    background: linear-gradient(45deg, #f03a70, #00a6fb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: rgba(240, 58, 112, 0.2);
    transform: rotate(90deg);
}

.submenu-items {
    display: grid;
    gap: 15px;
}

.submenu-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.submenu-item:hover {
    background: rgba(240, 58, 112, 0.1);
    border-color: rgba(240, 58, 112, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(240, 58, 112, 0.2);
    color: white;
}

.submenu-item i {
    font-size: 1.5rem;
    margin-right: 15px;
    color: #f03a70;
    width: 30px;
    text-align: center;
}

.submenu-item div {
    flex: 1;
}

.item-title {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.item-desc {
    display: block;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Animation für das Aufgleiten */
@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.portfolio-submenu.active .submenu-content {
    animation: slideUp 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}