/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

::selection {
    background-color: rgba(168, 213, 186, 0.3);
    color: #0d1b2a;
}

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

.animate-fade-up {
    animation-name: fade-up;
    animation-duration: 1s;
    animation-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
    animation-iteration-count: 1;
}

@keyframes scroll-line {
    0% {
        top: -16px;
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        top: 48px;
        opacity: 0;
    }
}

.animate-scroll-line {
    animation: scroll-line 1.8s ease-in-out infinite;
}

/* ── Scroll Reveal ── */
.reveal {
    opacity: 1;
    transform: translateY(0);
    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.reveal-hidden {
    opacity: 0;
    transform: translateY(40px);
}

@media (prefers-reduced-motion: no-preference) {
    .reveal.reveal-hidden {
        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);
    }
}

/* ── Parallax Hero Image ── */
#hero-img {
    will-change: transform;
}

/* ── Navbar Transition ── */
#navbar.scrolled {
    background-color: rgba(13, 27, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(168, 213, 186, 0.08);
}

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

#mobile-menu.open #menu-line-1 {
    transform: rotate(45deg) translate(3px, 3px);
}

#mobile-menu.open #menu-line-2 {
    opacity: 0;
}

#mobile-menu.open #menu-line-3 {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 24px;
}

/* ── Form Focus States ── */
input:focus,
textarea:focus {
    border-bottom-color: #7dbf9a !important;
}

/* ── Map Grayscale ── */
iframe.grayscale {
    filter: grayscale(1);
    transition: filter 0.7s ease;
}

iframe.grayscale:hover {
    filter: grayscale(0);
}

/* ── Utility ── */
@media (max-width: 767px) {
    .font-serif {
        font-size: clamp(2rem, 8vw, 3.5rem);
    }
}