/* ---------- Tokens ---------- */
:root {
    /* light (default) */
    --paper: #f2f3f1;
    --surface: #ffffff;
    --ink: #1b2024;
    --muted: #5c656c;
    --line: #cdd2d4;
    --accent: #f2b705;
    --bonus: #1f9d55;
    --penalty: #d64545;
    --on-accent: #14181b;
    --dot: rgba(27, 32, 36, .09);
    --glow: 22%;
    --shadow: 0 1px 2px rgba(20, 24, 27, .06), 0 8px 24px -12px rgba(20, 24, 27, .18);

    /* type */
    --font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
    --font-body: 'Barlow', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
    --font-heading: var(--font-display);

    /* shape */
    --radius: 10px;

    --step--1: 0.8125rem;
    --step-0: 1.0625rem;
    --step-1: 1.3rem;
    --step-3: clamp(2.25rem, 5vw, 3rem);
    --step-5: clamp(3.5rem, 12vw, 6.5rem);

    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root {
        --paper: #14181b;
        --surface: #1c2125;
        --ink: #e7e9ea;
        --muted: #98a1a7;
        --line: #2f363b;
        --dot: rgba(231, 233, 234, .07);
        --glow: 14%;
        --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px -12px rgba(0, 0, 0, .6);
        color-scheme: dark;
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding-inline: max(16px, 4vw);
    background-color: var(--paper);
    background-image:
        radial-gradient(60rem 36rem at 100% -8%, color-mix(in srgb, var(--accent) var(--glow), transparent), transparent 70%),
        radial-gradient(var(--dot) 1px, transparent 1.4px);
    background-size: 100% 100%, 22px 22px;
    background-repeat: no-repeat, repeat;
    min-height: 100vh;
    color: var(--ink);
    font-family: var(--font-body);
    font-size: var(--step-0);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color .3s, color .3s;
}

main,
.topbar,
.footer {
    max-width: 960px;
    margin-inline: auto;
}

[hidden] {
    display: none !important;
}

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

a {
    color: inherit;
    text-decoration-color: var(--accent);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

a:hover {
    text-decoration-thickness: 4px;
}

:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 3px;
}

.mono {
    font-family: var(--font-mono);
    font-size: var(--step--1);
    letter-spacing: .02em;
}

.muted {
    color: var(--muted);
}

.display {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1;
    letter-spacing: .01em;
    text-wrap: balance;
    margin: 0;
}

.eyebrow {
    margin: 0 0 .75rem;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -100px;
    padding: .5rem 1rem;
    background: var(--accent);
    color: var(--on-accent);
    z-index: 10;
}

.skip-link:focus {
    top: 16px;
}

/* ---------- Top bar ---------- */
.topbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: .75rem 1.5rem;
    padding-block: 1.25rem;
    border-bottom: 1px solid var(--line);
}

.brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.375rem;
    letter-spacing: .02em;
    text-transform: uppercase;
    text-decoration: none;
}

.brand::after {
    content: "";
    display: inline-block;
    width: .4em;
    height: .4em;
    margin-left: .15em;
    background: var(--accent);
    border-radius: 50%;
}

.topbar nav {
    display: flex;
    gap: 1.25rem;
    font-weight: 600;
}

.topbar nav a {
    text-decoration: none;
}

.topbar nav a:hover {
    text-decoration: underline;
    text-decoration-color: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
    padding-block: clamp(2.5rem, 8vw, 5rem) clamp(1.5rem, 4vw, 2.5rem);
}

.hero h1 {
    font-size: var(--step-5);
    text-transform: uppercase;
}

.hero h1::after {
    content: ".";
    color: var(--accent);
}

.lede {
    font-size: var(--step-1);
    line-height: 1.45;
    max-width: 40ch;
    margin: 1.25rem 0 0;
}

strong {
    font-weight: 600;
    background: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 45%, transparent) 0);
}

/* ---------- Game board ---------- */
.game {
    margin-bottom: clamp(2.5rem, 6vw, 4rem);
    padding: clamp(1rem, 4vw, 2rem);
    background: var(--surface);
    border: 1.5px solid var(--ink);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.status {
    margin: 0 0 1.5rem;
    min-height: 2.9em;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--step-1);
    line-height: 1.2;
    text-align: center;
    text-wrap: balance;
}

.players {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(.75rem, 3vw, 1.5rem);
}

.player {
    position: relative;
    display: grid;
    justify-items: center;
    gap: 1rem;
    padding: clamp(.9rem, 3vw, 1.5rem);
    background: var(--paper);
    border: 1.5px solid var(--line);
    border-radius: var(--radius);
    transition: border-color .2s, box-shadow .2s, transform .2s;
}


.player h2 {
    font-size: clamp(1.4rem, 5vw, 1.9rem);
    text-transform: uppercase;
}

.turn-tag {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    white-space: nowrap;
    visibility: hidden;
    padding: .1rem .5rem;
    border-radius: 999px;
    background: var(--accent);
    color: var(--on-accent);
    font-size: .6875rem;
    text-transform: uppercase;
    letter-spacing: .08em;
}

.player.is-active {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent), var(--shadow);
    transform: translateY(-3px);
}

.player.is-active .turn-tag {
    visibility: visible;
}

.player.is-winner {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 18%, var(--paper));
    box-shadow: var(--shadow);
}

.player.is-winner .turn-tag {
    visibility: visible;
    font-size: 0;
}

.player.is-winner .turn-tag::after {
    content: "Winner";
    font-size: .6875rem;
}

.score {
    margin: 0;
    display: flex;
    align-items: baseline;
    gap: .5rem;
}

.score .mono {
    text-transform: uppercase;
    letter-spacing: .08em;
}

.score output {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 2.25rem;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

/* progress towards 20 points */
.meter {
    width: 100%;
    height: .5rem;
    border-radius: 999px;
    background: var(--line);
    overflow: hidden;
}

.meter span {
    display: block;
    height: 100%;
    width: 0;
    background: var(--accent);
    border-radius: inherit;
    transition: width .35s ease;
}

/* ---------- Dice ---------- */
.die {
    --size: clamp(5rem, 22vw, 7.5rem);
    width: var(--size);
    height: var(--size);
    padding: calc(var(--size) * .16);
    display: grid;
    grid-template-areas:
        "p1 p2 p3"
        "p4 p5 p6"
        "p7 p8 p9";
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    place-items: center;
    background: var(--surface);
    border: 1.5px solid var(--ink);
    border-radius: 22%;
    box-shadow: inset 0 -4px 0 var(--line), var(--shadow);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: calc(var(--size) * .36);
    line-height: 1;
}

.pip {
    width: 70%;
    aspect-ratio: 1;
    border-radius: 50%;
    background: var(--ink);
}

.die.is-empty,
.die.is-bonus,
.die.is-penalty {
    display: grid;
    grid-template: none / none;
    place-items: center;
}

.die.is-empty {
    color: var(--muted);
    border-style: dashed;
    box-shadow: none;
    background: transparent;
}

.die.is-bonus {
    background: var(--bonus);
    border-color: var(--bonus);
    color: #fff;
    box-shadow: inset 0 -4px 0 rgba(0, 0, 0, .2), 0 10px 24px -12px var(--bonus);
}

.die.is-penalty {
    background: var(--penalty);
    border-color: var(--penalty);
    color: #fff;
    box-shadow: inset 0 -4px 0 rgba(0, 0, 0, .2), 0 10px 24px -12px var(--penalty);
}

.die.is-rolling {
    animation: roll .45s ease-out;
}

@keyframes roll {
    0% { transform: rotate(-18deg) scale(.85); }
    60% { transform: rotate(8deg) scale(1.05); }
    100% { transform: rotate(0) scale(1); }
}

.controls {
    display: flex;
    justify-content: center;
    margin-top: 1.75rem;
}

.controls .btn {
    font-size: 1.0625rem;
    min-width: 14rem;
    justify-content: space-between;
}

/* ---------- Sections ---------- */
.block {
    padding-block: clamp(2.5rem, 6vw, 4rem);
    border-top: 1px solid var(--line);
}

.block h2 {
    font-size: var(--step-3);
    margin-bottom: 1.25rem;
}

.prose {
    max-width: 62ch;
}

.rules {
    margin: 0;
    padding-left: 1.25rem;
}

.rules li + li {
    margin-top: .4rem;
}

.faces {
    list-style: none;
    margin: 1.25rem 0 1.5rem;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: .75rem;
    max-width: 36rem;
}

.faces li {
    display: grid;
    justify-items: center;
    gap: .5rem;
    color: var(--muted);
}

.die-sm {
    --size: 3.25rem;
}

/* ---------- Buttons & links ---------- */
.links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
}

.btn,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding: .85rem 1.4rem;
    border-radius: var(--radius);
    font: 600 1rem var(--font-body);
    letter-spacing: .01em;
    text-decoration: none;
    cursor: pointer;
    transition: transform .18s, box-shadow .18s, border-color .18s, background-color .18s, border-radius .3s;
}

.btn {
    background: var(--accent);
    color: var(--on-accent);
    border: 1.5px solid color-mix(in srgb, var(--accent) 80%, var(--ink));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, .35),
        0 8px 20px -10px var(--accent);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, .35),
        0 14px 28px -12px var(--accent);
}

.btn-ghost {
    background: var(--surface);
    color: var(--ink);
    border: 1.5px solid var(--line);
    box-shadow: var(--shadow);
}

.btn-ghost:hover {
    transform: translateY(-2px);
    border-color: var(--ink);
}

.btn:active,
.btn-ghost:active {
    transform: translateY(0);
}

/* the arrow slides out on hover */
.btn span[aria-hidden],
.btn-ghost span[aria-hidden] {
    display: inline-grid;
    place-items: center;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    font-size: .85rem;
    transition: transform .18s;
}

.btn span[aria-hidden] {
    background: var(--on-accent);
    color: var(--accent);
}

.btn-ghost span[aria-hidden] {
    background: var(--ink);
    color: var(--surface);
}

.btn:hover span[aria-hidden],
.btn-ghost:hover span[aria-hidden] {
    transform: translate(2px, -2px);
}

/* ---------- Footer ---------- */
.footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .5rem 1.5rem;
    padding-block: 1.5rem 2.5rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
}

/* ---------- Small screens ---------- */
@media (max-width: 560px) {
    .faces {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 420px) {
    .links li,
    .links .btn,
    .links .btn-ghost,
    .controls .btn {
        width: 100%;
    }

    .links .btn,
    .links .btn-ghost {
        justify-content: space-between;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }
}