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

body {
    overflow-x: hidden;
}

::selection {
    background: #d8b4fe;
    color: #3b0764;
}

/* ── Navbar scroll state ── */
#site-header {
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

#site-header.scrolled {
    background: rgba(250, 245, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 20px rgba(126, 34, 206, 0.08);
}

.nav-link {
    position: relative;
}

#site-header.scrolled .nav-link {
    color: #581c87;
}

/* ── Mobile menu ── */
#mobile-menu {
    animation: slideDown 0.25s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.mobile-link {
    display: block;
}

/* ── Floating animations ── */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

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

.animate-float {
    animation: float 4s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-delayed 5s ease-in-out infinite;
    animation-delay: 1.5s;
}

/* ── 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 visible state for progressive enhancement */
@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(24px);
    }

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

/* ── FAQ ── */
.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-content.open {
    max-height: 200px;
}

.faq-icon {
    transition: transform 0.25s ease;
}

.faq-btn[aria-expanded="true"] .faq-icon {
    transform: rotate(180deg);
}

/* ── Custom select arrow ── */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237e22ce' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* ── Focus visible ── */
*:focus-visible {
    outline: 2px solid #fbbf24;
    outline-offset: 2px;
    border-radius: 8px;
}

/* ── Responsive tweaks ── */
@media (max-width: 640px) {
    .animate-float,
    .animate-float-delayed {
        display: none;
    }

    h1 {
        font-size: 2.25rem !important;
    }

    h1 ~ p {
        font-size: 1rem !important;
    }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}