/* ── Reset & Base ── */
*, *::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 {
    background: #0d9488;
    color: #fff;
}

/* ── Navigation ── */
#navbar {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    background: rgba(15, 23, 42, 0.85);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

#navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #2dd4bf;
    transition: width 0.3s ease;
}

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

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

/* ── Hero Animations ── */
.hero-title {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(40px);
}

.hero-subtitle {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.15s forwards;
    opacity: 0;
    transform: translateY(30px);
}

.hero-desc {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
    opacity: 0;
    transform: translateY(30px);
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Product Cards ── */
.product-card {
    transform: translateY(0);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s ease;
}

.product-card:hover {
    transform: translateY(-6px);
}

.product-card:hover img {
    transform: scale(1.05);
}

/* ── Scroll Reveal ── */
.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.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

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

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

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

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

/* ── Parallax Hero Image ── */
.hero-img-stack {
    will-change: transform;
}

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

::-webkit-scrollbar-track {
    background: #0f172a;
}

::-webkit-scrollbar-thumb {
    background: #14b8a6;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* ── Focus Styles ── */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #2dd4bf;
    outline-offset: 2px;
}

/* ── Responsive Adjustments ── */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }

    #hero {
        min-height: 100vh;
        min-height: 100dvh;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .hero-title {
        font-size: 5rem;
    }
}

/* ── Print Styles ── */
@media print {
    #navbar,
    #contact-form,
    .reveal {
        display: none !important;
    }

    body {
        color: #000;
        background: #fff;
    }
}