/* ── Base & Utilities ── */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: rgba(27, 67, 50, 0.2);
    color: #1B4332;
}

/* ── Navbar ── */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(254, 252, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(27, 67, 50, 0.08);
}

/* ── Nav Links ── */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1B4332;
    transition: width 0.3s ease;
}

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

/* ── Floating Cards ── */
.floating-card {
    animation: float 6s ease-in-out infinite;
}

.card-top {
    animation-delay: 0s;
}

.card-bottom {
    animation-delay: -3s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-12px);
    }
}

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

.mobile-link {
    position: relative;
}

.mobile-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #1B4332;
    transition: width 0.3s ease;
}

.mobile-link:hover::after {
    width: 60%;
}

/* ── Scroll Reveal ── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    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; }

/* ── Image Hover ── */
img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* ── Focus Styles ── */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #1B4332;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .floating-card {
        display: none;
    }
}

/* ── Print ── */
@media print {
    #navbar,
    .floating-card,
    .reveal {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}