/* Base & Typography */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.nav-logo {
    transition: color 0.3s ease;
}

#navbar.scrolled .nav-logo {
    color: #0f172a;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0d9488;
    transition: width 0.3s ease;
}

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

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

#navbar.scrolled .nav-link {
    color: #475569;
}

/* Mobile Menu */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: all 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; }

/* Menu Toggle */
.menu-line {
    transition: all 0.3s ease;
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

#menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}

#menu-toggle.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
    width: 1.25rem;
}

/* Scroll Reveal */
.about-reveal,
.products-reveal,
.products-card,
.why-reveal,
.visit-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-reveal.visible,
.products-reveal.visible,
.products-card.visible,
.why-reveal.visible,
.visit-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.products-card {
    transition-delay: 0s;
}

.products-card:nth-child(2) { transition-delay: 0.12s; }
.products-card:nth-child(3) { transition-delay: 0.24s; }

.about-reveal:nth-child(1) { transition-delay: 0s; }
.about-reveal:nth-child(2) { transition-delay: 0.1s; }
.about-reveal:nth-child(3) { transition-delay: 0.2s; }

.why-reveal > div:first-child { transition-delay: 0s; }
.why-reveal > div:last-child { transition-delay: 0.15s; }

.visit-reveal { transition-delay: 0s; }
.visit-reveal:nth-of-type(2) { transition-delay: 0.1s; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .about-reveal,
    .products-reveal,
    .products-card,
    .why-reveal,
    .visit-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .nav-link::after { display: none; }
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #0d9488;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Selection */
::selection {
    background: #ccfbf1;
    color: #134e4a;
}