/* === Base Styles === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    overflow-x: hidden;
}

/* === Scroll Reveal Animations === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal.delay-100 {
    transition-delay: 0.1s;
}

.reveal.delay-200 {
    transition-delay: 0.2s;
}

/* === Hero Fade-in Animations === */
.fade-in {
    animation: fadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.fade-in-up {
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.fade-in.delay-100 {
    animation-delay: 0.1s;
}

.fade-in-up.delay-100 {
    animation-delay: 0.1s;
}

.fade-in-up.delay-200 {
    animation-delay: 0.2s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Navbar === */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #7dd3b2;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* === Mobile Menu Transitions === */
#mobileMenu.open {
    opacity: 1;
    pointer-events: all;
}

#mobileMenu.closed {
    opacity: 0;
    pointer-events: none;
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

#mobileMenu.open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

#mobileMenu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobileMenu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobileMenu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobileMenu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #e8eef4;
}

::-webkit-scrollbar-thumb {
    background: #7dd3b2;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #4dc495;
}

/* === Selection === */
::selection {
    background: #b3ebd1;
    color: #0a2e4d;
}

/* === Focus Styles === */
:focus-visible {
    outline: 2px solid #7dd3b2;
    outline-offset: 2px;
}

/* === Responsive Typography === */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }
}

/* === Print Styles === */
@media print {
    nav, #contact, footer {
        display: none;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}