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

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

body {
    margin: 0;
}

::selection {
    background: rgba(255, 111, 77, 0.2);
    color: #1f2937;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* Mobile menu open state */
.js #mobile-menu.open {
    opacity: 1;
    pointer-events: auto;
}

.js #mobile-menu.open .mobile-link {
    animation: fadeDown 0.3s ease forwards;
    opacity: 0;
}

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

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

/* Hamburger animation */
.js #menu-toggle[aria-expanded="true"] .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.js #menu-toggle[aria-expanded="true"] .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.js #menu-toggle[aria-expanded="true"] .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.25rem;
}

/* Scroll reveal — progressive enhancement via JS */
.reveal-up,
.reveal-left,
.reveal-right {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: no-preference) {
    .js .reveal-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .js .reveal-left {
        opacity: 0;
        transform: translateX(-24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .js .reveal-right {
        opacity: 0;
        transform: translateX(24px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }
    .js .reveal-up.is-visible,
    .js .reveal-left.is-visible,
    .js .reveal-right.is-visible {
        opacity: 1;
        transform: none;
    }
}

/* Back to top button */
#back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
}

/* Focus visible for keyboard users */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #ff6f4d;
    outline-offset: 2px;
}

/* Subtle scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #f6f6f7;
}
::-webkit-scrollbar-thumb {
    background: #c4c6ca;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #a1a5aa;
}