/* Hero */

.hero {
    text-align: center;
    padding: 5.5rem 0 1rem;
}

.hero h1 {
    font-family: 'Raleway', system-ui, sans-serif;
    font-size: clamp(2.6rem, 9vw, 4.2rem);
    font-weight: 500;
    letter-spacing: -.02em;
}

.hero .subtitle {
    font-family: 'Raleway', system-ui, sans-serif;
    margin-top: .9rem;
    font-size: clamp(1rem, 3.4vw, 1.5rem);
    font-weight: 200;
    color: var(--ink-soft);
}

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translateY(10px);
        filter: blur(8px);
    }

    to {
        opacity: 1;
        transform: none;
        filter: none;
    }
}

.hero h1 {
    animation: rise-in 1s var(--ease) .10s backwards;
}

.hero .subtitle {
    animation: rise-in 1s var(--ease) .18s backwards;
}

.main-nav {
    animation: rise-in 1s var(--ease) .26s backwards;
}

@media (prefers-reduced-motion: reduce) {
    .hero h1, .hero .subtitle, .main-nav {
        animation: none;
    }
}

/* Nav */

.main-nav {
    position: sticky;
    top: .75rem;
    z-index: 20;

    width: fit-content;
    max-width: 100%;
    margin: 2.5rem auto 0;
    padding: .55rem 1.35rem;

    background: color-mix(in srgb, var(--bg-a) 70%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid transparent;
    border-radius: 999px;

    transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.main-nav.is-stuck {
    border-color: var(--hairline);
    box-shadow: 0 10px 34px -20px rgba(0, 0, 0, .45);
}

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: clamp(.9rem, 3.5vw, 2rem);
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    position: relative;
    display: inline-block;
    padding: .2rem 0;
    font-size: .95rem;
    font-weight: 400;
    text-decoration: none;
    color: var(--ink);
    opacity: .75;
    transition: opacity .25s var(--ease);
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.is-active {
    opacity: 1;
}

/* Active link indicator, positioned by js/nav.js */
.main-nav ul {
    position: relative;
}

.nav-indicator {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    opacity: 0;
    pointer-events: none;
    transition: transform .5s var(--ease), width .5s var(--ease), opacity .3s var(--ease);
}

.nav-indicator.is-on {
    opacity: 1;
}

@media (max-width: 430px) {
    .main-nav {
        padding: .5rem 1rem;
        border-radius: 1.4rem;
    }

    .main-nav ul {
        gap: .5rem .9rem;
    }

    .main-nav a {
        font-size: .88rem;
    }
}

/* Theme toggle */

.theme-toggle {
    display: grid;
    place-items: center;
    width: 1.7rem;
    height: 1.7rem;
    margin: -.4rem 0;
    padding: 0;

    color: var(--ink);
    opacity: .7;
    background: none;
    border: 0;
    border-radius: 50%;
    cursor: pointer;

    transition: opacity .25s var(--ease), transform .35s var(--ease);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
    opacity: 1;
    transform: rotate(-15deg);
}

.theme-toggle svg {
    display: block;
    grid-area: 1 / 1;
    width: 15px;
    height: 15px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
}

/* Shows the icon of the theme the click switches to */
.theme-toggle .icon-moon {
    display: none;
}

.theme-toggle .icon-sun {
    display: block;
}

:root[data-theme="light"] .theme-toggle .icon-sun {
    display: none;
}

:root[data-theme="light"] .theme-toggle .icon-moon {
    display: block;
}