/* ─── Base & Utilities ─── */
*, *::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: rgba(15, 118, 110, 0.15);
    color: #0f766e;
}

/* ─── Navigation ─── */
#nav {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

#nav.scrolled {
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

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

#mobile-menu.open .mobile-link {
    animation: fadeUp 0.3s ease forwards;
    opacity: 0;
}

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

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

/* ─── Hero Floating Cards ─── */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.card-float {
    animation: float 4s ease-in-out infinite;
}

/* ─── Service Cards ─── */
.service-card {
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}

.service-card:hover {
    transform: translateY(-4px);
}

/* ─── Area Cards ─── */
.area-card {
    transition: transform 0.4s ease;
}

.area-card:hover {
    transform: translateY(-4px);
}

/* ─── Testimonial Cards ─── */
.testimonial-card {
    transition: transform 0.4s ease, border-color 0.4s ease;
}

.testimonial-card:hover {
    transform: translateY(-2px);
    border-color: rgba(20, 184, 166, 0.3);
}

/* ─── Scroll Reveal ─── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.revealed {
    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; }

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal {
        opacity: 1;
        transform: none;
    }
}