.game-header {
    border-bottom: 2px solid var(--color-border);
    padding: 24px;
    text-align: center;
}
.game-header h1 { font-size: clamp(1.4rem, 3vw, 2.2rem); letter-spacing: .04em; }
.game-header p  { color: var(--color-muted); font-size: .95rem; margin-top: 6px; }

.game-switcher {
    display: flex;
    justify-content: center;
    border-bottom: 2px solid var(--color-border);
    background-color: var(--color-bg);
}
.game-switcher button {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: none;
    border-right: 1px solid var(--color-border);
    padding: 14px 32px;
    cursor: pointer;
    transition: var(--transition);
}
.game-switcher button:last-child { border-right: none; }
.game-switcher button:hover      { background-color: var(--color-hover); }
.game-switcher button.active {
    background-color: var(--color-text);
    color: var(--color-bg);
}

.game-area {
    display: none;
    max-width: 520px;
    margin: 32px auto;
    padding: 0 14px;
}
.game-area.visible { display: block; }

.game-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 2px solid var(--color-border);
    border-bottom: none;
    padding: 10px 16px;
    background-color: var(--color-bg);
}
.game-topbar span { font-size: .9rem; }
.game-topbar button {
    font-family: 'Courier New', monospace;
    font-size: .85rem;
    font-weight: bold;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 4px 14px;
    cursor: pointer;
    transition: var(--transition);
}
.game-topbar button:hover { background-color: var(--color-hover); }
.t-controls {
    display: flex;
    gap: 6px;
}

/* Minesweeper */
#ms-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    border: 2px solid var(--color-border);
    border-top: none;
    background-color: var(--color-border);
    gap: 1px;
    user-select: none;
}
.ms-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: clamp(.6rem, 2vw, .8rem);
    cursor: pointer;
    background-color: var(--color-bg);
    transition: background-color .1s;
}
.ms-cell:hover:not(.ms-revealed) { background-color: var(--color-hover); }
.ms-cell.ms-revealed {
    cursor: default;
    background-color: var(--color-hover);
}
.ms-cell.ms-mine-hit {
    background-color: var(--color-text);
    color: var(--color-bg);
}

#ms-message, #t-message {
    border: 2px solid var(--color-border);
    border-top: none;
    padding: 8px 16px;
    text-align: center;
    font-size: .85rem;
    background-color: var(--color-bg);
    min-height: 34px;
    color: var(--color-muted);
}

/* 2048 */
#t-board {
    border: 2px solid var(--color-border);
    border-top: none;
    background-color: var(--color-border);
    position: relative;
    width: 100%;
    aspect-ratio: 1;
}
#t-bg-cells {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
}
.t-bg-cell { background-color: var(--color-bg); }
#t-tile-layer { position: absolute; inset: 0; }
.t-tile {
    position: absolute;
    width: calc(25% - 0.75px);
    height: calc(25% - 0.75px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-family: 'Courier New', monospace;
    font-size: clamp(.65rem, 3vw, 1.2rem);
    box-sizing: border-box;
    transition: top 105ms ease, left 105ms ease;
    will-change: top, left;
}
.t-tile.t-appear { animation: tAppear 130ms ease-out both; }
.t-tile.t-pop    { animation: tPop    160ms ease-out both; }
@keyframes tAppear {
    from { transform: scale(0);    opacity: 0; }
    to   { transform: scale(1);    opacity: 1; }
}
@keyframes tPop {
    0%   { transform: scale(1);    }
    45%  { transform: scale(1.18); }
    100% { transform: scale(1);    }
}

#t-hint {
    text-align: center;
    color: var(--color-muted);
    font-size: .75rem;
    margin-top: 8px;
}

.game-footer {
    border-top: 2px solid var(--color-border);
    text-align: center;
    padding: 24px;
    margin-top: 40px;
    color: var(--color-muted);
    font-size: .85rem;
}