/* ─── Base & Reset ─── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    overflow-x: hidden;
}

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

::selection {
    background: #ff5a3e;
    color: white;
}

/* ─── Writing mode for scroll indicator ─── */
.writing-mode-vertical {
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

/* ─── Hero Animations ─── */
.hero-anim {
    opacity: 0;
    transform: translateY(30px);
    animation: heroReveal 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-anim:nth-child(1) { animation-delay: 0.1s; }
.hero-anim:nth-child(2) { animation-delay: 0.25s; }
.hero-anim:nth-child(3) { animation-delay: 0.4s; }
.hero-anim:nth-child(4) { animation-delay: 0.55s; }
.hero-anim:nth-child(5) { animation-delay: 0.7s; }

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Scroll Reveal (below the fold only) ─── */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(40px);
        transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                    transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
    }

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

    .reveal:nth-child(2) { transition-delay: 0.1s; }
    .reveal:nth-child(3) { transition-delay: 0.2s; }
}

/* ─── Navbar Transition ─── */
#navbar.scrolled {
    background: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

/* ─── Mobile Menu ─── */
#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.open #bar1 {
    transform: translateY(6px) rotate(45deg);
}

#mobile-menu.open #bar2 {
    opacity: 0;
}

#mobile-menu.open #bar3 {
    transform: translateY(-6px) rotate(-45deg);
    width: 1.5rem;
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.3s; }

/* ─── Custom Scrollbar ─── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #fafaf8;
}

::-webkit-scrollbar-thumb {
    background: #d4d4d4;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #ff5a3e;
}

/* ─── Focus Styles ─── */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #ff5a3e;
    outline-offset: 4px;
    border-radius: 2px;
}

/* ─── Responsive tweaks ─── */
@media (max-width: 767px) {
    .font-serif {
        line-height: 1.1;
    }
}