/* ── Base & Typography ── */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background-color: #a7f3d0;
    color: #064e3b;
}

/* ── Navbar ── */
#navbar {
    background: rgba(254, 253, 248, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(16, 185, 129, 0.08);
}

#navbar.scrolled {
    background: rgba(254, 253, 248, 0.95);
    box-shadow: 0 4px 20px rgba(6, 78, 59, 0.06);
}

/* ── Mobile Menu ── */
.mobile-link {
    position: relative;
}

.mobile-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #10b981;
    transition: width 0.2s ease;
}

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

/* ── Floating Animations ── */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes float-delay {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(-2deg); }
}

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

.animate-float-delay {
    animation: float-delay 8s ease-in-out infinite;
    animation-delay: 1s;
}

/* ── Scroll Reveal ── */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Default state: all elements visible (progressive enhancement) */
/* JS adds .revealed for scroll-triggered animation */

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .scroll-reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .animate-float,
    .animate-float-delay {
        animation: none;
    }
    html {
        scroll-behavior: auto;
    }
}

/* Staggered delays for grid items */
.scroll-reveal:nth-child(1) { transition-delay: 0.05s; }
.scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
.scroll-reveal:nth-child(3) { transition-delay: 0.15s; }
.scroll-reveal:nth-child(4) { transition-delay: 0.2s; }
.scroll-reveal:nth-child(5) { transition-delay: 0.25s; }
.scroll-reveal:nth-child(6) { transition-delay: 0.3s; }

/* ── Custom scrollbar ── */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #fdf9ee;
}
::-webkit-scrollbar-thumb {
    background: #a7f3d0;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #6ee7b7;
}

/* ── Image loading placeholder ── */
img {
    background: linear-gradient(135deg, #d1fae5 0%, #faf3d6 100%);
}

/* ── Focus visible for accessibility ── */
*:focus-visible {
    outline: 2px solid #10b981;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ── Button press effect ── */
button:active,
a:active {
    transform: scale(0.97);
}