/* 
 * Custom Styles for SDG Landing Page 
 */

html {
    scroll-behavior: smooth;
}

/* Navbar styles on scroll */
nav#main-nav.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

/* Scroll Reveal Animations */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal-up.active {
    opacity: 1;
    transform: translateY(0);
}

/* Animation Delays */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }
.delay-500 { transition-delay: 500ms; }

/* Swiper Customization */
.swiper-button-next, .swiper-button-prev {
    color: white !important;
    background: rgba(0, 0, 0, 0.2);
    width: 36px !important;
    height: 36px !important;
    border-radius: 50%;
    backdrop-filter: blur(4px);
}

.swiper-button-next:after, .swiper-button-prev:after {
    font-size: 14px !important;
    font-weight: 800;
}

.swiper-pagination-bullet-active {
    background: #F06423 !important;
}

/* Mobile Menu Transitions */
#mobile-menu {
    transition: max-height 0.4s ease-in-out;
}

#mobile-menu.open {
    max-height: 500px;
}

/* Responsive Font Scaling for big headlines */
@media (max-width: 768px) {
    h1 {
        font-size: 3rem !important;
        line-height: 1.2 !important;
    }
}