/* ── 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(52, 211, 153, 0.3);
    color: #f0fdf4;
}

/* ── Navbar ── */
#navbar {
    background: transparent;
}

#navbar.scrolled {
    background: rgba(5, 13, 26, 0.92);
    backdrop-blur-xl;
    border-bottom: 1px solid rgba(52, 211, 153, 0.08);
    box-shadow: 0 4px 40px rgba(0, 0, 0, 0.4);
}

/* ── Mobile Menu ── */
.mobile-link {
    display: block;
}

.menu-line {
    display: block;
}

#menuBtn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

#menuBtn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 1.5rem;
}

/* ── Hero Floating Cards ── */
@keyframes floatSlow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes floatMedium {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

@keyframes floatFast {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-16px); }
}

.float-slow {
    animation: floatSlow 6s ease-in-out infinite;
}

.float-medium {
    animation: floatMedium 5s ease-in-out infinite;
    animation-delay: 0.5s;
}

.float-fast {
    animation: floatFast 4s ease-in-out infinite;
    animation-delay: 1s;
}

/* ── Service Cards ── */
.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(52, 211, 153, 0), transparent);
    transition: all 0.5s ease;
}

.service-card:hover::before {
    background: linear-gradient(90deg, transparent, rgba(52, 211, 153, 0.6), transparent);
}

/* ── Scroll Reveal (progressive enhancement) ── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 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; }
}

/* ── Form Styles ── */
select option {
    background: #0a1628;
    color: #e5e7eb;
}

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

::-webkit-scrollbar-track {
    background: #050d1a;
}

::-webkit-scrollbar-thumb {
    background: #1e3a5c;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #34d399;
}

/* ── Focus visible for accessibility ── */
:focus-visible {
    outline: 2px solid #34d399;
    outline-offset: 2px;
}