.ttt-shell {
    max-width: 560px;
    margin: 0 auto;
    padding: 12px 12px 28px;
    color: var(--cg-ink);
    font-family: Inter, Arial, sans-serif;
}

.ttt-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.ttt-stats,
.ttt-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ttt-stat {
    min-width: 66px;
    padding: 7px 9px;
    border: 1px solid var(--cg-line);
    border-radius: 8px;
    background: var(--cg-panel);
    box-shadow: 0 6px 16px rgba(30, 37, 40, 0.06);
}

.ttt-stat span {
    display: block;
    color: var(--cg-muted);
    font-size: 10px;
    font-weight: 800;
    line-height: 1.1;
    text-transform: uppercase;
    white-space: nowrap;
}

.ttt-stat strong {
    display: block;
    margin-top: 2px;
    font-size: 17px;
    line-height: 1;
}

.ttt-icon-btn,
.ttt-new,
.ttt-close,
.ttt-seg-btn {
    min-height: 44px;
    border: 1px solid var(--cg-line);
    border-radius: 8px;
    background: var(--cg-panel);
    color: var(--cg-ink);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
    transition: transform 120ms ease, border-color 120ms ease, background 120ms ease, color 120ms ease;
}

.ttt-icon-btn {
    width: 44px;
    display: inline-grid;
    place-items: center;
    padding: 0;
    font-size: 19px;
}

.ttt-icon-btn svg {
    width: 22px;
    height: 22px;
}

.ttt-new {
    padding: 0 15px;
    background: var(--cg-ink);
    border-color: var(--cg-ink);
    color: #fff;
}

.ttt-new:hover {
    background: var(--cg-teal);
    border-color: var(--cg-teal);
}

.ttt-icon-btn:hover,
.ttt-close:hover,
.ttt-seg-btn:hover {
    border-color: var(--cg-teal);
    transform: translateY(-1px);
}

.ttt-icon-btn:focus-visible,
.ttt-new:focus-visible,
.ttt-close:focus-visible,
.ttt-seg-btn:focus-visible,
.ttt-cell:focus-visible {
    outline: 3px solid rgba(18, 122, 137, 0.35);
    outline-offset: 2px;
}

.ttt-controls {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.ttt-seg {
    display: inline-flex;
    padding: 3px;
    border: 1px solid var(--cg-line);
    border-radius: 10px;
    background: var(--cg-panel);
    gap: 3px;
}

.ttt-seg-btn {
    min-height: 38px;
    padding: 0 11px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--cg-muted);
    font-size: 13px;
    border-radius: 7px;
}

.ttt-seg-btn.ttt-on {
    background: var(--cg-ink);
    border-color: var(--cg-ink);
    color: #fff;
}

.ttt-seg-off {
    opacity: 0.42;
    pointer-events: none;
}

.ttt-score {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    max-width: 400px;
    margin: 0 auto 8px;
}

.ttt-score-cell {
    padding: 8px 10px;
    border: 1px solid var(--cg-line);
    border-radius: 8px;
    background: var(--cg-panel);
    text-align: center;
    box-shadow: 0 6px 16px rgba(30, 37, 40, 0.06);
}

.ttt-score-cell span {
    display: block;
    color: var(--cg-muted);
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    white-space: nowrap;
}

.ttt-score-cell strong {
    display: block;
    margin-top: 2px;
    font-size: 21px;
    line-height: 1;
}

.ttt-x-ink strong,
.ttt-cell-x {
    color: var(--cg-teal);
}

.ttt-o-ink strong,
.ttt-cell-o {
    color: var(--cg-amber);
}

.ttt-status {
    min-height: 24px;
    margin: 4px 0 10px;
    color: var(--cg-muted);
    font-size: 15px;
    font-weight: 800;
    text-align: center;
}

.ttt-status-over {
    color: var(--cg-ink);
}

.ttt-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    width: min(100%, 400px);
    margin: 0 auto;
    padding: 10px;
    border: 1px solid var(--cg-line);
    border-radius: 12px;
    background: var(--cg-panel);
    box-shadow: var(--cg-shadow);
}

.ttt-cell {
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    padding: 0;
    border: 2px solid var(--cg-line);
    border-radius: 10px;
    background: var(--cg-bg);
    font-family: inherit;
    font-size: clamp(44px, 13vw, 74px);
    font-weight: 900;
    line-height: 1;
    cursor: pointer;
    transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}

.ttt-cell:not(:disabled):hover {
    border-color: var(--cg-teal);
    background: #eef4f2;
    transform: translateY(-1px);
}

.ttt-cell:disabled {
    cursor: default;
}

.ttt-cell-x,
.ttt-cell-o {
    animation: ttt-pop 160ms ease both;
}

.ttt-cell-win {
    border-color: var(--cg-green);
    background: #e2f2ea;
    animation: ttt-win 460ms ease both;
}

.ttt-cell-win.ttt-cell-x,
.ttt-cell-win.ttt-cell-o {
    color: var(--cg-green);
}

.ttt-cell-dim {
    opacity: 0.45;
}

.ttt-hint {
    margin-top: 10px;
    color: var(--cg-muted);
    font-size: 12px;
    text-align: center;
}

.ttt-overlay {
    position: fixed;
    inset: 0;
    z-index: 30;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(30, 37, 40, 0.36);
}

.ttt-overlay[hidden] {
    display: none;
}

.ttt-dialog {
    position: relative;
    width: min(100%, 430px);
    padding: 22px;
    border: 1px solid var(--cg-line);
    border-radius: 8px;
    background: var(--cg-panel);
    box-shadow: var(--cg-shadow);
}

.ttt-dialog h2 {
    margin: 0 44px 10px 0;
    font-size: 22px;
    line-height: 1.1;
}

.ttt-dialog p,
.ttt-dialog li {
    color: var(--cg-muted);
    font-size: 14px;
    line-height: 1.5;
}

.ttt-dialog p {
    margin: 0 0 10px;
}

.ttt-dialog ul {
    margin: 0 0 10px;
    padding-left: 18px;
}

.ttt-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 44px;
    padding: 0;
    font-size: 26px;
    line-height: 1;
}

@keyframes ttt-pop {
    0% { transform: scale(0.55); }
    70% { transform: scale(1.08); }
    100% { transform: scale(1); }
}

@keyframes ttt-win {
    0%, 100% { transform: scale(1); }
    40% { transform: scale(1.07); }
}

@media (max-width: 430px) {
    .ttt-shell {
        padding-left: 8px;
        padding-right: 8px;
    }

    .ttt-topbar {
        align-items: stretch;
        flex-direction: column;
    }

    .ttt-stats {
        justify-content: center;
    }

    .ttt-stat {
        flex: 1;
        text-align: center;
    }

    .ttt-actions {
        justify-content: center;
    }

    .ttt-new {
        flex: 1;
    }

    .ttt-seg-btn {
        padding: 0 9px;
        font-size: 12px;
    }

    .ttt-board {
        width: min(100%, 360px);
    }
}