kbd {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.78em;
    padding: 1px 6px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
}

.settings {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.arena {
    display: grid;
    grid-template-columns: 1fr minmax(180px, 1.1fr) 1fr;
    align-items: center;
    gap: 20px;
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background:
        radial-gradient(60% 80% at 50% 0%, rgba(124, 92, 255, 0.12), transparent 70%),
        var(--surface);
}

.side { text-align: center; }
.side-label {
    margin: 0 0 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
}
.cpu-mode {
    font-family: "JetBrains Mono", monospace;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--muted);
    vertical-align: middle;
}

.hand-card {
    display: grid;
    place-items: center;
    aspect-ratio: 1;
    max-width: 200px;
    margin: 0 auto;
    border-radius: 24px;
    border: 2px solid var(--border);
    background: var(--bg);
    transition: border-color .3s, box-shadow .3s, opacity .3s, transform .3s;
}
.hand {
    display: inline-block;
    font-size: clamp(3.6rem, 12vw, 6.5rem);
    line-height: 1;
}
.hand .flip { display: inline-block; transform: scaleX(-1); }

.arena.shaking .hand { animation: shake .3s ease-in-out 3; }
@keyframes shake {
    0%, 100% { transform: translateY(0) rotate(0); }
    50%      { transform: translateY(-26px) rotate(-10deg); }
}

.arena.win .you .hand-card,
.arena.lose .cpu .hand-card {
    --glow: var(--live);
    border-color: var(--glow);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--glow) 18%, transparent), 0 20px 50px -20px var(--glow);
    transform: scale(1.04);
}
.arena.lose .cpu .hand-card { --glow: var(--lose); }
.arena.win .cpu .hand-card,
.arena.lose .you .hand-card { opacity: 0.5; transform: scale(0.96); }
.arena.tie .hand-card { border-color: var(--accent); }

.verdict { text-align: center; }
.result {
    margin: 0;
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}
.arena.win .result  { color: var(--live); animation: pop .35s ease; }
.arena.lose .result { color: var(--lose); animation: pop .35s ease; }
.arena.tie .result  { color: var(--accent); animation: pop .35s ease; }
@keyframes pop {
    0%   { transform: scale(0.7); opacity: 0; }
    70%  { transform: scale(1.08); }
    100% { transform: scale(1); opacity: 1; }
}
.detail { margin: 6px 0 0; color: var(--muted); min-height: 1.6em; }

.pips {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
}
.pips span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    transition: background .3s;
}
.pips span.on { background: var(--accent); }

.choices {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 14px;
    margin: 22px 0;
}
.choice {
    font: inherit;
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 18px 12px 14px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: var(--surface);
    cursor: pointer;
    transition: transform .15s, border-color .2s, box-shadow .2s;
}
.choice:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: 0 16px 36px -20px rgba(124, 92, 255, 0.6); }
.choice:active { transform: translateY(0) scale(0.97); }
.choice.picked { border-color: var(--accent); }
.choice-emoji { font-size: 2.6rem; line-height: 1; }
.choice-name { font-weight: 600; }

.rules { margin-bottom: 22px; }
.rules ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 8px 20px;
    color: var(--muted);
}
.rules em { color: var(--text); font-style: normal; font-weight: 600; }

.scoreboard {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 12px;
    margin-bottom: 22px;
}
.scoreboard div {
    padding: 16px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    text-align: center;
}
.scoreboard strong { display: block; font-size: 1.6rem; letter-spacing: -0.02em; }
.scoreboard span { color: var(--muted); font-size: 0.82rem; }

.history-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}
.history-head h2 { margin: 0; }
.btn.small { padding: 6px 12px; font-size: 0.8rem; }

.history {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}
.history li {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 1.1rem;
}
.history li span { font-size: 0.7rem; color: var(--muted); }
.history li.win  { border-color: var(--live); }
.history li.lose { border-color: var(--lose); }
.history li.tie  { border-color: var(--accent); }
.history li.empty { border: 0; padding: 0; font-size: 0.9rem; color: var(--muted); }

dialog {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--text);
    padding: 32px 40px;
    text-align: center;
    max-width: min(420px, calc(100vw - 32px));
}
dialog::backdrop { background: rgba(8, 10, 16, 0.55); backdrop-filter: blur(4px); }
dialog h2 { margin: 0 0 6px; letter-spacing: -0.02em; }
dialog p { color: var(--muted); margin: 0 0 20px; }
.dialog-emoji { font-size: 3.5rem; margin: 0 0 8px !important; }

@media (max-width: 760px) {
    .arena { grid-template-columns: 1fr 1fr; padding: 20px; }
    .verdict { grid-column: 1 / -1; grid-row: 2; }
    .scoreboard { grid-template-columns: repeat(3, 1fr); }
    .choices { grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); }
}