/* ── Reset & Base ─────────────────────────────────── */
*, *::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(42, 182, 152, 0.3);
    color: #fff;
}

/* ── Animations ───────────────────────────────────── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

/* ── Scroll Reveal ────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    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; }

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

#navbar.scrolled {
    background: rgba(7, 15, 30, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 4px 40px rgba(0, 0, 0, 0.3);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: #4DBF96;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    color: #4DBF96;
}

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

#mobile-menu.open .mobile-link {
    animation: fadeInUp 0.5s ease-out forwards;
    opacity: 0;
}

#mobile-menu.open .mobile-link:nth-child(1) { animation-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { animation-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { animation-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { animation-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(5) { animation-delay: 0.3s; }

/* ── Menu Toggle ──────────────────────────────────── */
#menu-toggle.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

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

#menu-toggle.active .menu-line:nth-child(3) {
    width: 20px;
    transform: rotate(-45deg) translate(3px, -3px);
}

/* ── 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, #4DBF96, transparent);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-card:hover::before {
    opacity: 1;
}

/* ── Map Dark Mode Override ───────────────────────── */
iframe[title*="Map"] {
    border-radius: 0 0 1.5rem 1.5rem;
}

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

::-webkit-scrollbar-track {
    background: #070F1E;
}

::-webkit-scrollbar-thumb {
    background: #1B3F77;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2A5298;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
    .font-serif {
        line-height: 1.1;
    }
}

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