/* ==================== 点击按钮区域样式 ==================== */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-bottom: 0;
    touch-action: manipulation; /* 优化触摸响应 */
}

.normal_button {
    min-width: 120px;
    height: 48px;
    line-height: 48px;
    font-size: 1rem;
    padding: 0 24px;
    border: none;
    border-radius: 12px;
    display: inline-block;
    position: relative;
    vertical-align: middle;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    -webkit-tap-highlight-color: transparent; /* 移除移动端点击高亮 */
    user-select: none; /* 防止文本选择 */
    touch-action: manipulation; /* 优化触摸响应 */
}

.normal_button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.normal_button:hover::before,
.normal_button:focus::before {
    transform: translateX(100%);
}

.normal_button:hover,
.normal_button:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--glow-color);
}

.normal_button:active {
    transform: translateY(0);
}

/* 移动端触摸优化 */
@media (hover: none) and (pointer: coarse) {
    .normal_button:hover {
        transform: none;
        box-shadow: none;
    }
    
    .normal_button:active {
        transform: scale(0.95);
        transition: transform 0.1s ease;
    }
}

/* 按钮颜色样式 */
.btn-select {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

.btn-paste {
    background: linear-gradient(135deg, var(--secondary-pink) 0%, var(--secondary-gold) 100%);
}

.btn-encrypt {
    background: linear-gradient(135deg, var(--accent-pink) 0%, var(--accent-red) 100%);
}

.btn-decrypt {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-cyan-light) 100%);
}

.btn-restore {
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-teal) 100%);
}

.ipt_btn {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}