/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #1e88e5, #0d47a1);
    color: white;
    text-align: center;
    padding: 30px 20px;
}

header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 主要内容区域 */
main {
    padding: 30px;
}

.converter-box {
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* 输入区域 */
.input-section {
    margin-bottom: 25px;
}

label {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 10px;
    font-weight: bold;
    color: #444;
}

.input-group {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.currency-symbol {
    background-color: #e0e0e0;
    padding: 10px 15px;
    border-radius: 4px 0 0 4px;
    font-weight: bold;
    border: 1px solid #ccc;
    border-right: none;
}

input[type="text"] {
    width: 100%;
    padding: 10px 15px;
    font-size: 1.1rem;
    border: 1px solid #ccc;
    border-radius: 0 4px 4px 0;
    transition: border-color 0.3s;
}

input[type="text"]:focus {
    outline: none;
    border-color: #1e88e5;
    box-shadow: 0 0 5px rgba(30, 136, 229, 0.3);
}

.tip {
    font-size: 0.9rem;
    color: #666;
    margin: 8px 0 15px;
}

button {
    padding: 10px 20px;
    font-size: 1rem;
    background-color: #1e88e5;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-right: 10px;
}

button:hover {
    background-color: #1976d2;
}

button:active {
    background-color: #0d47a1;
}

#clear-btn {
    background-color: #757575;
}

#clear-btn:hover {
    background-color: #616161;
}

/* 结果区域 */
.result-section {
    background-color: #fff;
    padding: 20px;
    border-radius: 6px;
    border: 1px solid #e0e0e0;
}

.result-section h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.result {
    font-size: 1.3rem;
    padding: 15px;
    background-color: #f0f7ff;
    border-radius: 4px;
    border-left: 4px solid #1e88e5;
    margin-bottom: 15px;
    word-break: break-all;
    min-height: 60px;
    display: flex;
    align-items: center;
}

.copy-btn {
    background-color: #4caf50;
    padding: 8px 15px;
    font-size: 0.9rem;
}

.copy-btn:hover {
    background-color: #43a047;
}

/* 使用说明 */
.instructions, .examples {
    margin-bottom: 30px;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.instructions h2, .examples h2 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #333;
    border-bottom: 2px solid #e0e0e0;
    padding-bottom: 10px;
}

.instructions ul {
    padding-left: 20px;
}

.instructions li {
    margin-bottom: 8px;
}

/* 示例表格 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background-color: #f5f5f5;
    font-weight: bold;
}

tr:hover {
    background-color: #f9f9f9;
}

/* 页脚 */
footer {
    background-color: #f5f5f5;
    text-align: center;
    padding: 20px;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #e0e0e0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    header {
        padding: 20px 15px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    main {
        padding: 20px 15px;
    }
    
    .converter-box {
        padding: 15px;
    }
    
    .result {
        font-size: 1.1rem;
    }
    
    button {
        padding: 8px 15px;
        font-size: 0.95rem;
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .result {
        font-size: 1rem;
        padding: 10px;
    }
    
    th, td {
        padding: 8px 10px;
        font-size: 0.9rem;
    }
}