@font-face {
    font-family: "Inter";
    src: url("fonts/inter.woff2") format("woff2");
    font-weight: 100 900;
    font-display: swap;
}

/* Material Design 1.0 (2014): paper surfaces, elevation, flat colour, uppercase buttons */
:root {
    --bg: #fafafa;
    --surface: #ffffff;
    --surface-2: #eeeeee;
    --text: rgb(0 0 0 / 0.87);
    --muted: rgb(0 0 0 / 0.54);
    --divider: rgb(0 0 0 / 0.12);
    --primary: #7289da;
    --primary-light: #adbeef;
    --link: #7289da;
    --on-primary: #fff;
    --z1: 0 2px 4px rgb(0 0 0 / 0.2), 0 1px 2px rgb(0 0 0 / 0.3);
    --z2: 0 3px 6px rgb(0 0 0 / 0.16), 0 3px 6px rgb(0 0 0 / 0.23);
    --z3: 0 12px 24px rgb(0 0 0 / 0.25), 0 6px 8px rgb(0 0 0 / 0.28);
    --z4: 0 14px 28px rgb(0 0 0 / 0.25), 0 10px 10px rgb(0 0 0 / 0.22);
    --radius: 2px;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #303030;
        --surface: #424242;
        --surface-2: #212121;
        --text: #fff;
        --muted: rgb(255 255 255 / 0.7);
        --divider: rgb(255 255 255 / 0.12);
        --link: #adbeef;
        color-scheme: dark;
    }
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family:
        "Inter",
        system-ui,
        -apple-system,
        "Segoe UI",
        sans-serif;
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--link);
}

.wrap {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 16px;
}

/* app bar */
.appbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--z2);
}
nav {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 56px;
}
@media (min-width: 600px) {
    nav {
        height: 64px;
    }
}
nav .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    font-size: 20px;
    color: var(--on-primary);
    text-decoration: none;
    margin-inline-end: auto;
}
nav .brand img {
    width: auto;
    height: 28px;
}
nav a.link {
    color: var(--on-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    padding: 8px 12px;
    border-radius: var(--radius);
    transition: background 0.2s var(--ease);
}
nav a.link:hover {
    background: rgb(255 255 255 / 0.15);
}
nav a.link.open {
    background: #fff;
    color: var(--primary);
    box-shadow: var(--z1);
    margin-inline-start: 8px;
}
nav a.link.open:hover {
    background: #fff;
    box-shadow: var(--z2);
}
@media (max-width: 560px) {
    nav a.link.optional {
        display: none;
    }
    nav {
        gap: 0;
    }
    nav .wrap,
    nav.wrap {
        padding: 0 8px;
    }
    nav .brand {
        gap: 8px;
        font-size: 18px;
        min-width: 0;
    }
    nav a.link {
        font-size: 13px;
        padding: 8px;
    }
    nav a.link.open {
        margin-inline-start: 4px;
    }
}
@media (max-width: 400px) {
    nav a.link.gh {
        display: none;
    }
}

/* hero */
.hero {
    color: var(--text);
    text-align: center;
    padding: 56px 0 40px;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 300;
    line-height: 1.15;
    margin: 0 0 16px;
}
.hero p.lead {
    max-width: 640px;
    margin: 0 auto 32px;
    color: var(--muted);
    font-size: 20px;
    font-weight: 300;
    line-height: 1.4;
}
.cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}
.btn {
    display: inline-block;
    min-width: 88px;
    padding: 8px 16px;
    line-height: 20px;
    text-align: center;
    white-space: normal;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    text-decoration: none;
    border: 0;
    background: var(--surface);
    color: var(--primary);
    box-shadow: var(--z1);
    transition:
        box-shadow 0.28s var(--ease),
        background 0.2s var(--ease);
}
.btn .ic {
    width: 18px;
    height: 18px;
    margin-inline-end: 6px;
    vertical-align: -4px;
    fill: currentColor;
}
.btn:hover {
    box-shadow: var(--z2);
}
.btn:active {
    box-shadow: var(--z3);
}
.btn.primary {
    background: var(--primary);
    color: #fff;
}
.hero .sub {
    margin-top: 24px;
    font-size: 12px;
    color: var(--muted);
}

/* screenshot as a raised sheet */
.shot {
    margin: 0 auto;
    max-width: 1000px;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface-2);
    box-shadow: var(--z4);
    position: relative;
}
.shot img {
    display: block;
    width: 100%;
    height: auto;
}

/* sections */
section {
    padding: 56px 0 8px;
}
section > .wrap > h2 {
    font-size: 34px;
    font-weight: 400;
    line-height: 40px;
    margin: 0 0 8px;
}
section > .wrap > p.intro {
    margin: 0 0 24px;
    color: var(--muted);
    font-size: 16px;
    max-width: 640px;
}

.grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--z1);
    transition:
        box-shadow 0.28s var(--ease),
        transform 0.28s var(--ease);
}
.card:hover {
    box-shadow: var(--z2);
}
.card h3 {
    margin: 0 0 8px;
    font-size: 20px;
    font-weight: 500;
    line-height: 28px;
}
.card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}
.card .tag {
    display: inline-block;
    margin-top: 12px;
    padding: 0 12px;
    height: 32px;
    line-height: 32px;
    border-radius: 16px;
    background: var(--surface-2);
    color: var(--text);
    font-size: 13px;
}

/* downloads */
.dl-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.dl {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--z1);
    transition:
        box-shadow 0.28s var(--ease),
        transform 0.28s var(--ease);
}
.dl:hover {
    box-shadow: var(--z2);
}
.dl.match {
    box-shadow: var(--z2);
    border-top: 4px solid var(--primary);
    padding-top: 12px;
}
.dl h3 {
    margin: 0 0 8px;
    font-size: 20px;
    font-weight: 500;
}
.dl p {
    margin: 0 0 16px;
    color: var(--muted);
    flex: 1;
}
.dl .btn {
    padding: 8px 4px;
    white-space: nowrap;
    font-size: 12px;
    letter-spacing: 0;
    background: var(--primary);
    color: #fff;
}
.dl .btn + .btn {
    margin-top: 8px;
}
.dl .alt {
    margin-top: 12px;
    font-size: 12px;
    color: var(--muted);
}

.note {
    margin-top: 24px;
    padding: 16px;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--z1);
    color: var(--muted);
}
.note strong {
    color: var(--text);
    font-weight: 500;
}

footer {
    margin-top: 72px;
    padding: 24px 0 32px;
    background: var(--surface-2);
    color: var(--muted);
    font-size: 13px;
}
@media (prefers-color-scheme: light) {
    footer {
        background: var(--primary);
        color: #fff;
    }
    footer a {
        color: #fff;
    }
}
footer .wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    justify-content: space-between;
}
footer .links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
}