/* Base Reset & Custom Properties */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

/* Selection */
::selection {
    background: rgba(94, 234, 212, 0.2);
    color: #0a1628;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f0f4f8;
}
::-webkit-scrollbar-thumb {
    background: #bcccdc;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #9fb3cc;
}

/* Navbar Transition */
#navbar.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(10, 22, 40, 0.06);
}

#navbar.scrolled .nav-text {
    color: #0a1628;
}

#navbar.scrolled .nav-link {
    color: #334e68;
}

#navbar.scrolled .menu-line {
    background: #0a1628;
}

/* Hero Floating Cards Animation */
.floating-card {
    animation: float 6s ease-in-out infinite;
}

.floating-card:nth-child(2) {
    animation-delay: -2s;
}

.floating-card:nth-child(3) {
    animation-delay: -4s;
}

.floating-card:nth-child(4) {
    animation-delay: -1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* Mobile Menu */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.open .mobile-link {
    animation: fadeUp 0.4s ease forwards;
    opacity: 1;
}

#mobile-menu .mobile-link:nth-child(1) { animation-delay: 0.05s; }
#mobile-menu .mobile-link:nth-child(2) { animation-delay: 0.1s; }
#mobile-menu .mobile-link:nth-child(3) { animation-delay: 0.15s; }
#mobile-menu .mobile-link:nth-child(4) { animation-delay: 0.2s; }
#mobile-menu .mobile-link:nth-child(5) { animation-delay: 0.25s; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile menu button */
#mobile-menu-btn.active .menu-line:first-child {
    transform: rotate(45deg) translate(3px, 3px);
}
#mobile-menu-btn.active .menu-line:last-child {
    transform: rotate(-45deg) translate(2px, -2px);
}

/* Service Cards Stagger */
.service-card {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease, border-color 0.5s ease, background 0.5s ease;
}

/* Testimonial Cards */
.testimonial-card {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.5s ease;
}

/* Form Select Arrow */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239fb3cc' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0 center;
    padding-right: 2rem;
}

/* Smooth image loading */
img {
    image-rendering: -webkit-optimize-contrast;
}