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

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

/* Navbar */
.nav-scrolled {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 24px rgba(0, 0, 0, 0.04);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: all 0.3s ease;
}

.nav-scrolled .nav-link {
    color: #334155;
}

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

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 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);
}

/* Stagger children */
.scroll-reveal > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

.scroll-reveal.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.scroll-reveal.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.scroll-reveal.revealed > *:nth-child(3) { transition-delay: 0.15s; }
.scroll-reveal.revealed > *:nth-child(4) { transition-delay: 0.2s; }
.scroll-reveal.revealed > *:nth-child(5) { transition-delay: 0.25s; }
.scroll-reveal.revealed > *:nth-child(6) { transition-delay: 0.3s; }

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

.faq-item.active .faq-content {
    max-height: 200px;
    padding-bottom: 1.5rem;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* Back to top */
.back-to-top {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:not(.visible) {
    transform: translateY(10px);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .scroll-reveal { opacity: 1; transform: none; }
    .scroll-reveal > * { opacity: 1; transform: none; transition: none; }
    .back-to-top { transition: none; }
    .scroll-reveal.revealed > * { transition-delay: 0s; }
}