.game-terminal .help-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1.5px solid rgba(0, 255, 255, 0.35);
    background: rgba(0, 0, 0, 0.5);
    color: var(--accent-color);
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    transition: all 0.25s;
    padding: 0;
    line-height: 1;
}

.game-terminal .help-btn:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.4);
    background: rgba(0, 255, 255, 0.12);
}

.game-terminal .fullscreen-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1.5px solid rgba(0, 255, 255, 0.35);
    background: rgba(0, 0, 0, 0.5);
    color: var(--accent-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    transition: all 0.25s;
    padding: 0;
}

.game-terminal .fullscreen-btn:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.4);
    background: rgba(0, 255, 255, 0.12);
}

.game-terminal .fullscreen-btn.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.6);
    background: rgba(0, 255, 255, 0.2);
}

.game-terminal .fullscreen-icon {
    width: 18px;
    height: 18px;
    display: block;
    pointer-events: none;
}

.game-terminal .music-btn {
    position: fixed;
    bottom: 20px;
    right: 70px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1.5px solid rgba(0, 255, 255, 0.35);
    background: rgba(0, 0, 0, 0.5);
    color: var(--accent-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    transition: all 0.25s;
    padding: 0;
    font-family: var(--font-mono);
    font-size: 18px;
    line-height: 1;
}

.game-terminal .music-btn:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.4);
    background: rgba(0, 255, 255, 0.12);
}

.game-terminal .music-btn.muted {
    color: var(--danger-color);
    border-color: rgba(255, 0, 85, 0.5);
}

.game-terminal .music-btn.muted:hover {
    border-color: var(--danger-color);
    box-shadow: 0 0 12px rgba(255, 0, 85, 0.4);
    background: rgba(255, 0, 85, 0.12);
}

.game-terminal .header {
    display: flex;
    flex-direction: column;
    gap: 15px;
    border-bottom: 1px solid var(--grid-line);
    padding-bottom: 15px;
}

.game-terminal .difficulty-selector {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.game-terminal .diff-btn {
    background: transparent;
    color: rgba(255,255,255,0.4);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 3px 14px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s;
}

.game-terminal .diff-btn:hover {
    color: var(--accent-color);
    border-color: rgba(0, 255, 255, 0.4);
}

.game-terminal .diff-btn.active {
    color: var(--accent-color);
    border-color: var(--accent-color);
    text-shadow: 0 0 5px var(--accent-color);
    background: rgba(0, 255, 255, 0.1);
}

.game-terminal .header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-right: 40px;
}

.game-terminal .title-glitch {
    color: var(--accent-color);
    font-weight: bold;
    letter-spacing: 3px;
    font-size: 20px;
    text-shadow: 0 0 5px var(--accent-color);
}

.game-terminal .score-board {
    display: flex;
    gap: 30px;
    text-align: right;
}

.game-terminal .score-item {
    display: flex;
    flex-direction: column;
}

.game-terminal .score-label {
    font-size: 10px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 1px;
}

.game-terminal .score-value {
    font-size: 28px;
    color: #fff;
    text-shadow: 0 0 10px rgba(255,255,255,0.5);
}

.game-terminal .clear-highscore-btn {
    align-self: flex-end;
    margin-top: 3px;
    background: transparent;
    color: rgba(255,255,255,0.35);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 2px 8px;
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.5px;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s;
}

.game-terminal .clear-highscore-btn:hover:not(:disabled) {
    color: var(--danger-color);
    border-color: rgba(255, 0, 85, 0.5);
    background: rgba(255, 0, 85, 0.1);
}

.game-terminal .clear-highscore-btn:disabled {
    opacity: 0.35;
    cursor: default;
}