/* Base styles and custom overrides */
html {
    scroll-behavior: smooth;
}

/* Navbar scroll state */
header.nav-scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 40;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

header:not(.nav-scrolled) {
    background: transparent;
    box-shadow: none;
}

/* Mobile menu */
.mobile-menu {
    z-index: 50;
}

.mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.open .mobile-menu-link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu.open .mobile-menu-link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.open .mobile-menu-link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu.open .mobile-menu-link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.open .mobile-menu-link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu.open .mobile-menu-link:nth-child(5) { transition-delay: 0.25s; }

/* Scroll reveal animations (progressive enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }

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

    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
    .reveal-delay-5 { transition-delay: 0.5s; }
}

/* 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='%2394a3b8' 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;
    appearance: none;
}

/* Selection color */
::selection {
    background: #99f6e4;
    color: #134e4a;
}