*, *::before, *::after {
    box-sizing: border-box;
}

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

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

/* Hero gradient */
.hero-gradient {
    background: linear-gradient(135deg, #022c22 0%, #047857 40%, #065f46 70%, #022c22 100%);
}

/* Subtle dot pattern for hero */
.hero-pattern {
    background-image: radial-gradient(circle, rgba(254, 253, 248, 0.8) 1px, transparent 1px);
    background-size: 32px 32px;
}

/* Subtle pattern for about section */
.about-pattern {
    background-image: radial-gradient(circle, rgba(254, 253, 248, 1) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* Scroll reveal — progressive enhancement via JS */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }

    .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; }
}

/* Service card staggered delays */
.service-card.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@media (prefers-reduced-motion: no-preference) {
    .service-card.reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .service-card:nth-child(1) { transition-delay: 0s; }
    .service-card:nth-child(2) { transition-delay: 0.08s; }
    .service-card:nth-child(3) { transition-delay: 0.16s; }
    .service-card:nth-child(4) { transition-delay: 0.24s; }
    .service-card:nth-child(5) { transition-delay: 0.32s; }
    .service-card:nth-child(6) { transition-delay: 0.40s; }
}

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(254, 253, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(4, 120, 87, 0.08);
    box-shadow: 0 1px 0 rgba(4, 120, 87, 0.04);
}

/* Mobile menu */
#mobile-menu.open {
    display: block;
    animation: menuSlide 0.3s ease forwards;
}

#mobile-menu.hidden {
    display: none;
}

@keyframes menuSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hamburger animation */
.menu-line {
    display: block;
    height: 1.5px;
    background: currentColor;
    transition: all 0.3s ease;
}

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

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

#menu-btn.active .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Selection color */
::selection {
    background: rgba(4, 120, 87, 0.15);
    color: #047857;
}

/* Focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #059669;
    outline-offset: 2px;
    border-radius: 4px;
}

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