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

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

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background: rgba(45, 212, 191, 0.3);
    color: #f1f5f9;
}

/* === Scrollbar === */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a0f1a;
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* === Animations === */
@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.4; }
    50% { transform: translateY(-20px) scale(1.2); opacity: 0.8; }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* === Hero Animations === */
.animate-fade-in {
    animation: fade-in 0.8s ease-out forwards;
}

.animate-slide-up {
    animation: slide-up 0.8s ease-out forwards;
    opacity: 0;
}

.animate-slide-up-delay {
    animation: slide-up 0.8s ease-out 0.2s forwards;
    opacity: 0;
}

.animate-slide-up-delay-2 {
    animation: slide-up 0.8s ease-out 0.4s forwards;
    opacity: 0;
}

.animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
}

/* === Scroll Reveal === */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

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

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #2dd4bf, #d4a017);
    transition: width 0.3s ease;
}

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

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

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

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

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

/* === Product Card Shimmer === */
.group::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(45, 212, 191, 0.05), transparent);
    transition: left 0.6s ease;
    z-index: 1;
    pointer-events: none;
}

.group:hover::before {
    left: 100%;
}

/* === Gold Accent Line === */
.gold-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #d4a017, #2dd4bf);
    border-radius: 2px;
}

/* === Focus States === */
a:focus-visible, button:focus-visible {
    outline: 2px solid #2dd4bf;
    outline-offset: 2px;
    border-radius: 4px;
}

/* === Responsive Tweaks === */
@media (max-width: 640px) {
    html {
        scroll-padding-top: 70px;
    }

    #hero h1 {
        font-size: 2.75rem;
    }

    #hero h1 br {
        display: none;
    }
}