body {
    background-color: #121212;
    color: #f5f5f5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.lang-btn {
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

.lang-btn.active {
    color: #22D3EE;
    font-weight: 700;
}

.transparent-header {
    background-color: transparent;
    transition: background-color 0.3s ease;
}

.solid-header {
    background-color: rgba(0, 0, 0, 0.9);
    transition: background-color 0.3s ease;
}

.social-icons {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 100;
}

.social-icons a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 24px;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    color: #22D3EE;
    transform: scale(1.2);
}

/* Mobile sidebar menu */
.mobile-sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100%;
    background-color: #0E7490;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    overflow-y: auto;
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.3);
}

.mobile-sidebar.open {
    left: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

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

.mobile-sidebar-close {
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-sidebar-close:hover {
    color: #22D3EE;
    transform: rotate(90deg);
}

.mobile-sidebar-menu {
    padding: 20px;
}

.mobile-sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 15px 10px;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    margin-bottom: 5px;
}

.mobile-sidebar-menu a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.mobile-sidebar-menu a i {
    margin-right: 15px;
    width: 20px;
    text-align: center;
}

.mobile-sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Scroll animations */
.scroll-animate {
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.scroll-animate.fade-up {
    opacity: 0;
    transform: translateY(50px);
}

.scroll-animate.fade-up.in-view {
    opacity: 1;
    transform: translateY(0);
}

.scroll-animate.fade-in {
    opacity: 0;
}

.scroll-animate.fade-in.in-view {
    opacity: 1;
}

.scroll-animate.scale-up {
    opacity: 0;
    transform: scale(0.95);
}

.scroll-animate.scale-up.in-view {
    opacity: 1;
    transform: scale(1);
}

.scroll-animate.delay-100 {
    transition-delay: 100ms;
}

.scroll-animate.delay-200 {
    transition-delay: 200ms;
}

.scroll-animate.delay-300 {
    transition-delay: 300ms;
}

.text-shadow {
    text-shadow: 2px 1px 2px rgba(0, 0, 0, .2);
}