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

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

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(69, 196, 142, 0.3);
    color: #e8eaf6;
}

/* ─── Section Shared ─── */
.section-label {
    display: block;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

.section-divider {
    transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ─── Hero Animations ─── */
@keyframes heroFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-image {
    animation: heroFloat 6s ease-in-out infinite;
}

/* ─── Scroll Reveal (progressive enhancement) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .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; }
    .reveal-delay-5 { transition-delay: 0.5s; }
    .reveal-delay-6 { transition-delay: 0.6s; }

    /* Service cards stagger */
    .service-card {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                    border-color 0.5s ease,
                    background 0.5s ease;
    }

    .service-card.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    /* Reason cards stagger */
    .reason-card {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .reason-card.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .reason-icon {
        transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
                    box-shadow 0.4s ease;
    }

    .reason-card:hover .reason-icon {
        transform: scale(1.1);
        box-shadow: 0 0 30px rgba(69, 196, 142, 0.2);
    }
}

/* ─── Navbar ─── */
#navbar {
    backdrop-filter: blur(0px);
    transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
}

#navbar.scrolled {
    background: rgba(6, 9, 20, 0.85);
    backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(69, 196, 142, 0.08);
}

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

#mobile-menu.open .mobile-link {
    animation: fadeSlideIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

#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; }

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Menu Toggle Animation ─── */
#menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
    width: 1.25rem;
}

/* ─── Form ─── */
select option {
    background: #121a36;
    color: #c5c9e0;
}

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

::-webkit-scrollbar-track {
    background: #0a0f21;
}

::-webkit-scrollbar-thumb {
    background: #1e274f;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2d3768;
}

/* ─── Focus visible ─── */
:focus-visible {
    outline: 2px solid rgba(69, 196, 142, 0.6);
    outline-offset: 2px;
}

/* ─── 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;
    }
}