*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    overflow-x: hidden;
}

#page-wrapper {
    opacity: 1;
    transition: opacity 0.4s ease;
}

#page-wrapper.page-hidden {
    opacity: 0;
}

/* Scroll reveal — progressive enhancement via JS */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
    html {
        scroll-behavior: auto;
    }
    * {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* Header */
#site-header {
    background: rgba(253, 249, 243, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(4, 120, 87, 0.08);
}

#site-header.scrolled {
    background: rgba(253, 249, 243, 0.95);
    box-shadow: 0 4px 30px rgba(4, 120, 87, 0.08);
}

/* Mobile menu */
#mobile-menu {
    animation: slideDown 0.3s ease forwards;
}

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

/* Hamburger */
.menu-line {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
}

#menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#menu-toggle.active .menu-line:nth-child(3) {
    width: 1.5rem;
    transform: translateY(-4px) rotate(-45deg);
}

/* FAQ */
.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
}

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

.faq-icon {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Modal */
#success-modal {
    animation: modalIn 0.3s ease forwards;
}

@keyframes modalIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

#modal-card {
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

#modal-card.show {
    transform: scale(1);
    opacity: 1;
}

#modal-card.hide {
    transform: scale(0.95);
    opacity: 0;
}

/* Selection */
::selection {
    background: rgba(4, 120, 87, 0.15);
    color: #047857;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #FDF9F3;
}

::-webkit-scrollbar-thumb {
    background: #A7F3D0;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #34D399;
}