body {
    padding: 18px 18px 40px;
}

.game-shell {
    width: min(1080px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(360px, 700px) minmax(230px, 260px);
    gap: 18px;
    align-items: start;
    justify-content: center;
}

.game-header {
    grid-column: 1 / -1;
}

.arena-panel {
    position: relative;
    overflow: hidden;
    padding: 0;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-lg);
    background: #06101c;
    box-shadow: var(--ui-shadow);
    align-self: start;
}

.canvas-wrap {
    position: relative;
    overflow: hidden;
    width: 100%;
    border-radius: inherit;
    background: #06101c;
}

#gameCanvas {
    display: block;
    width: 100%;
    max-height: calc(100vh - 220px);
    aspect-ratio: 41 / 52;
    background: #06101c;
}

.start-layer {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(3, 8, 18, 0.72);
    backdrop-filter: blur(10px);
}

.start-layer[hidden] {
    display: none;
}

.overlay-card {
    width: min(380px, 100%);
    display: grid;
    gap: 13px;
    justify-items: center;
    padding: 24px;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-md);
    background: rgba(5, 14, 28, 0.92);
    text-align: center;
}

.overlay-card strong {
    font-size: 38px;
    line-height: 1;
}

.overlay-card p {
    margin: 0;
    color: var(--ui-muted);
    line-height: 1.6;
}

.overlay-kicker {
    color: var(--ui-accent-2);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.info-column {
    display: grid;
    gap: 12px;
    align-self: start;
}

.stats-panel {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 14px;
}

.stat {
    display: grid;
    gap: 6px;
    padding: 14px;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-sm);
    background: rgba(255, 255, 255, 0.05);
}

.stat span {
    color: var(--ui-muted);
    font-size: 12px;
    font-weight: 800;
}

.stat strong {
    font-size: 30px;
    line-height: 1;
}

.time-panel,
.controls-panel,
.mobile-panel,
.ranking-panel,
.room-list-panel,
.waiting-panel {
    display: grid;
    gap: 14px;
    padding: 18px;
}

.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.section-head h2 {
    margin: 0;
    font-size: 18px;
}

.time-track {
    height: 16px;
    overflow: hidden;
    border: 1px solid var(--ui-line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
}

#timeBar {
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--ui-accent-2), var(--ui-warn));
    transform-origin: left center;
}

.controls-panel p {
    margin: 0;
    color: var(--ui-muted);
    line-height: 1.55;
}

.key {
    display: inline-flex;
    min-width: 34px;
    min-height: 28px;
    align-items: center;
    justify-content: center;
    margin-right: 6px;
    padding: 0 8px;
    border: 1px solid var(--ui-line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--ui-text);
    font-weight: 900;
}

.buttons,
.mobile-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.buttons.left {
    justify-content: flex-start;
}

.mobile-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mobile-controls button {
    min-height: 58px;
    font-size: 18px;
}

.ranking-panel .ranking-list {
    display: grid;
    gap: 8px;
}

.ranking-panel .ranking-item {
    grid-template-columns: 28px minmax(0, 1fr) auto;
    gap: 8px;
    padding: 10px 11px;
}

.ranking-panel .ranking-name {
    overflow: hidden;
    color: var(--ui-muted);
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ranking-panel .ranking-score {
    font-size: 14px;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

@media (max-width: 900px) {
    .game-shell {
        grid-template-columns: 1fr;
    }

    .arena-panel {
        max-width: 700px;
        justify-self: center;
    }
}

@media (max-width: 720px) {
    body {
        padding: 10px;
    }

    .stats-panel {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 460px) {
    .stats-panel,
    .mobile-controls {
        grid-template-columns: 1fr;
    }

    .stat strong {
        font-size: 24px;
    }
}