/* 全局样式 */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --text-color: #333;
    --background-color: #f5f5f5;
    --card-background: #fff;
    --border-color: #ddd;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 深色模式 */
[data-theme="dark"] {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --text-color: #f5f5f5;
    --background-color: #222;
    --card-background: #333;
    --border-color: #444;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #c0392b;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

h1, h2, h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.theme-toggle {
    display: flex;
    align-items: center;
}

.theme-toggle label {
    margin-right: 10px;
}

/* 会员验证样式 */
.member-section {
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.warning-message {
    background-color: #fff3cd;
    color: #856404;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: bold;
    border-left: 5px solid #ffeeba;
}

[data-theme="dark"] .warning-message {
    background-color: #4d3c00;
    color: #ffe69c;
    border-left: 5px solid #6d5600;
}

.member-form {
    max-width: 500px;
    margin: 0 auto;
}

.verification-result {
    margin-top: 15px;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
}

.verification-result.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.verification-result.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

[data-theme="dark"] .verification-result.success {
    background-color: #1e4031;
    color: #8fd6a7;
    border: 1px solid #2c6844;
}

[data-theme="dark"] .verification-result.error {
    background-color: #4e1c23;
    color: #ea868f;
    border: 1px solid #6b2830;
}

/* 禁用的选项卡样式 */
.tab-btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

.action-btn {
    display: block;
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    font-size: 16px;
    font-weight: bold;
}

/* 选项卡样式 */
.tabs {
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background-color: var(--card-background);
}

.tab-buttons {
    display: flex;
    background-color: var(--primary-color);
}

.tab-content {
    display: none;
    padding: 20px;
}

.tab-content.active {
    display: block;
}

.tab-btn {
    padding: 12px 20px;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s;
    flex: 1;
    text-align: center;
}

.tab-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.tab-btn.active {
    background-color: var(--secondary-color);
    font-weight: bold;
}

/* 材料信息样式 */
.material-section, .design-section, .calculation-section {
    padding: 15px;
}

.material-group {
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 8px;
    background-color: var(--card-background);
    box-shadow: var(--shadow);
}

.material-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.input-group {
    display: flex;
    flex-direction: column;
    min-width: 150px;
    flex: 1;
}

.input-group label {
    margin-bottom: 5px;
    font-weight: bold;
}

input, select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--card-background);
    color: var(--text-color);
    transition: border-color 0.3s;
}

input:focus, select:focus {
    border-color: var(--primary-color);
    outline: none;
}

input[type="number"] {
    width: 100%;
}

.radio-group {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-top: 10px;
}

.radio-group input[type="radio"] {
    margin-right: 5px;
}

/* 按钮样式 */
button {
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 14px;
}

button:hover {
    background-color: var(--secondary-color);
}

button:disabled {
    background-color: var(--border-color);
    cursor: not-allowed;
}

/* 设计要求样式 */
.design-group, .water-cement-ratio, .water-quantity, .concrete-type {
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 8px;
    background-color: var(--card-background);
    box-shadow: var(--shadow);
}

.ratio-inputs, .water-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: flex-end;
}

/* 计算结果样式 */
.cementitious-materials, .aggregate-usage, .calculation-method, .trial-usage {
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 8px;
    background-color: var(--card-background);
    box-shadow: var(--shadow);
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

/* 高亮输入框 */
.highlight {
    border: 2px solid var(--warning-color);
}

/* 结果显示区域样式 */
.result-display {
    margin-top: 30px;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.result-table {
    width: 100%;
    margin-bottom: 20px;
    border-collapse: collapse;
}

.result-table table {
    width: 100%;
    border-collapse: collapse;
}

.result-table th, .result-table td {
    padding: 10px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.result-table th {
    background-color: var(--primary-color);
    color: white;
}

.export-buttons {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 20px;
}

.export-btn {
    padding: 10px 20px;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: 8px;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
}

/* 页脚样式 */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 15px;
    color: var(--text-color);
    border-top: 1px solid var(--border-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .material-inputs, .ratio-inputs, .water-inputs {
        flex-direction: column;
    }
    
    .input-group {
        width: 100%;
    }
    
    .tab-btn {
        padding: 10px;
        font-size: 14px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .export-buttons {
        flex-direction: column;
    }
}