/* 计算器容器 */
.calculator-container {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: #c0c0c0;
    flex: 1;
}

/* 显示屏 */
.calculator-display {
    background: #ffffff;
    border-top: 2px solid var(--win98-shadow);
    border-left: 2px solid var(--win98-shadow);
    border-right: 2px solid var(--win98-highlight);
    border-bottom: 2px solid var(--win98-highlight);
    padding: 8px;
}

#calculator-input {
    width: 100%;
    text-align: right;
    font-family: var(--win98-font);
    font-size: 20px;
    border: none;
    background: transparent;
    color: #000000;
    outline: none;
}

/* 按钮区域 */
.calculator-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calculator-row {
    display: flex;
    gap: 8px;
}

/* 按钮样式 */
.calc-btn {
    flex: 1;
    height: 40px;
    font-family: var(--win98-font);
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0 !important;
    padding: 0 !important;
    border-top: 1px solid #fff;
    border-left: 1px solid #fff;
    border-right: 1px solid #000;
    border-bottom: 1px solid #000;
    box-shadow: inset -1px -1px 0px #808080;
}

/* 运算符按钮 */
.calc-btn.operator {
    background-color: #d4d0c8;
}

/* 按钮悬停效果 */
.calc-btn:hover {
    background-color: #d4d0c8;
}

/* 按钮激活效果 */
.calc-btn:active {
    border-top: 1px solid var(--win98-shadow);
    border-left: 1px solid var(--win98-shadow);
    border-right: 1px solid var(--win98-highlight);
    border-bottom: 1px solid var(--win98-highlight);
    box-shadow: inset 1px 1px 0px var(--win98-shadow);
}