/* === Base & Reset === */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(163, 230, 53, 0.2);
    color: #a3e635;
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #080f09;
}
::-webkit-scrollbar-thumb {
    background: rgba(163, 230, 53, 0.2);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(163, 230, 53, 0.4);
}

/* === Animations === */
@keyframes scrollIndicator {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(400%); }
}

.animate-scroll-indicator {
    animation: scrollIndicator 1.5s ease-in-out infinite;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* === Hero Animations === */
.hero-anim {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-anim:nth-child(1) { animation-delay: 0.2s; }
.hero-anim:nth-child(2) { animation-delay: 0.4s; }
.hero-anim:nth-child(3) { animation-delay: 0.6s; }
.hero-anim:nth-child(4) { animation-delay: 0.8s; }

/* === Reveal on Scroll === */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }
.reveal:nth-child(6) { transition-delay: 0.5s; }

/* === Header === */
#header {
    background: transparent;
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#header.scrolled {
    background: rgba(4, 8, 5, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(163, 230, 53, 0.08);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #a3e635;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #fdfcfa !important;
}

/* === Mobile Menu === */
.mobile-nav-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

#mobileMenu.open .mobile-nav-link:nth-child(1) { transition-delay: 0.1s; }
#mobileMenu.open .mobile-nav-link:nth-child(2) { transition-delay: 0.15s; }
#mobileMenu.open .mobile-nav-link:nth-child(3) { transition-delay: 0.2s; }
#mobileMenu.open .mobile-nav-link:nth-child(4) { transition-delay: 0.25s; }
#mobileMenu.open .mobile-nav-link:nth-child(5) { transition-delay: 0.3s; }

/* === Menu Button === */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
#menuBtn.active .menu-line:nth-child(2) {
    opacity: 0;
}
#menuBtn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.25rem;
}

/* === Service Cards === */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #a3e635, transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 0.6;
}

/* === Form Styles === */
input:focus,
select:focus,
textarea:focus {
    border-color: rgba(163, 230, 53, 0.5) !important;
    box-shadow: 0 0 0 1px rgba(163, 230, 53, 0.15);
}

/* === Responsive === */
@media (max-width: 767px) {
    .hero-anim {
        animation-duration: 0.6s;
    }
}