/* ===== BASE & RESET ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

/* ===== SCROLL REVEAL (progressive enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .scroll-reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

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

    .scroll-reveal:nth-child(2) { transition-delay: 0.1s; }
    .scroll-reveal:nth-child(3) { transition-delay: 0.2s; }
    .scroll-reveal:nth-child(4) { transition-delay: 0.3s; }
    .scroll-reveal:nth-child(5) { transition-delay: 0.35s; }
    .scroll-reveal:nth-child(6) { transition-delay: 0.4s; }
}

/* ===== NAVBAR SCROLLED STATE ===== */
#site-header.scrolled {
    background: rgba(254, 253, 251, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(123, 45, 59, 0.08), 0 4px 20px rgba(123, 45, 59, 0.06);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: #7B2D3B;
    border-radius: 1px;
    transition: width 0.2s ease, left 0.2s ease;
}

.nav-link:hover::after {
    width: 60%;
    left: 20%;
}

/* ===== 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;
}

/* ===== ACCORDION ===== */
.accordion-trigger {
    cursor: pointer;
    user-select: none;
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

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

/* ===== BUTTON FOCUS STYLES ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #7B2D3B;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== SELECTION ===== */
::selection {
    background: #f9cfd9;
    color: #5c1e29;
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #fdf2f4;
}
::-webkit-scrollbar-thumb {
    background: #f4a3b8;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #c72047;
}