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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Microsoft YaHei", "微软雅黑", "SimSun", "宋体", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* RTL Support */
[dir="rtl"] {
    direction: rtl;
}

[dir="rtl"] .main-content {
    grid-template-columns: 1fr 350px;
}

[dir="rtl"] .sidebar {
    border-right: none;
    border-left: 1px solid #eee;
    padding-right: 0;
    padding-left: 1rem;
}

/* Language Selector */
.language-selector-container {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

[dir="rtl"] .language-selector-container {
    right: auto;
    left: 20px;
}

#languageSelector {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: white;
    font-size: 14px;
    cursor: pointer;
    min-width: 150px;
    transition: border-color 0.3s;
}

#languageSelector:hover {
    border-color: #4CAF50;
}

#languageSelector:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.1);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

.main-content {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

/* Left Sidebar */
.sidebar {
    position: sticky;
    top: 20px;
    height: fit-content;
    padding-right: 1rem;
    border-right: 1px solid #eee;
}

/* Right Content */
.main-area {
    min-width: 0;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 2rem;
}

.converter-box {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.input-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

input, select, button {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

input {
    flex: 1;
    min-width: 200px;
}

select {
    min-width: 150px;
}

button {
    background-color: #0d4b7d;
    color: #ffffff;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
    min-width: 100px;
    padding: 0.8rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}

button:hover {
    background-color: #083456;
}

button:focus {
    outline: 3px solid #ffffff;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(13, 75, 125, 0.5);
}

.result-group {
    margin-top: 2rem;
}

.result-container {
    position: relative;
    margin-top: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.result {
    flex: 1;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 5px;
    min-height: 50px;
    word-wrap: break-word;
}

.copy-button {
    background-color: #ffffff;
    color: #0d4b7d;
    border: 2px solid #0d4b7d;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    min-width: auto;
    font-weight: 500;
    text-shadow: none;
}

.copy-button:hover {
    background-color: #e8f0f7;
    color: #083456;
    border-color: #083456;
}

.copy-button.copied {
    background-color: #1e6e32;
    color: #ffffff;
    border-color: #1e6e32;
}

.examples {
    margin-top: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.examples h3 {
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.example-section {
    margin-bottom: 2rem;
}

.example-section:last-child {
    margin-bottom: 0;
}

.example-section h4 {
    color: #34495e;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

.example-section p {
    color: #666;
    margin: 0.5rem 0;
    padding: 0.5rem;
    background-color: #f8f9fa;
    border-radius: 5px;
}

.case-examples {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.case-example {
    display: flex;
    padding: 0.5rem;
    background-color: #f8f9fa;
    border-radius: 5px;
    align-items: center;
}

.case-label {
    min-width: 120px;
    font-weight: 500;
    color: #2c3e50;
}

.case-text {
    color: #666;
}

@media (max-width: 600px) {
    .input-group {
        flex-direction: column;
    }
    
    input, select, button {
        width: 100%;
    }
    
    .case-example {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .case-label {
        min-width: auto;
    }

    /* 移动端结果区域样式 */
    .result-container {
        flex-direction: column;
        gap: 0.5rem;
    }

    .result {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .copy-button {
        width: auto;
        align-self: flex-end;
        margin-top: 0;
        padding: 0.5rem 1.5rem;
    }
} 

/* Footer Links */
.footer-links {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links a {
    color: #0d4b7d;
    text-decoration: none;
    padding: 12px 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
    min-width: 120px;
    text-align: center;
}

.footer-links a:hover {
    background-color: #e8f0f7;
    color: #083456;
}

.footer-links a:focus {
    outline: 3px solid #0d4b7d;
    outline-offset: 2px;
}

/* Mobile Optimization for Touch Targets */
@media (max-width: 768px) {
    .footer-links {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .footer-links a {
        display: block;
        padding: 16px 24px;  /* 增加内边距提供更大的触摸区域 */
        margin: 0;
        width: 100%;        /* 让链接占满整行 */
        font-size: 1rem;    /* 增大字体大小 */
        min-height: 48px;   /* 确保最小高度符合可访问性标准 */
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* 超小屏幕优化 */
@media (max-width: 375px) {
    .footer-links {
        padding: 0.8rem;
    }

    .footer-links a {
        padding: 16px 20px;
    }
}

/* Content Sections */
.intro-section {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    text-align: left;
    line-height: 1.6;
}

.features, .use-cases, .additional-info {
    margin: 30px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

.features h2, .use-cases h2, .additional-info h2 {
    color: #333;
    margin-bottom: 15px;
}

.features ul, .use-cases ul, .additional-info ul {
    list-style-type: none;
    padding: 0;
}

.features li, .use-cases li, .additional-info li {
    margin: 10px 0;
    padding-left: 20px;
    position: relative;
}

.features li:before, .use-cases li:before, .additional-info li:before {
    content: "•";
    color: #007bff;
    position: absolute;
    left: 0;
}

.additional-info {
    margin-top: 40px;
}

/* Number Reference Styles */
.number-reference {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
}

.number-reference h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.number-groups {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.number-group {
    background-color: white;
    padding: 1.2rem;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.number-group h3 {
    color: #34495e;
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.number-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.number-group li {
    padding: 0.25rem 0;
    color: #555;
    font-size: 0.9rem;
}

.number-tips {
    margin-top: 1.5rem;
    padding: 1.2rem;
    background-color: white;
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.number-tips h3 {
    color: #34495e;
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.number-tips ul {
    list-style: disc;
    padding-left: 1.2rem;
    margin: 0;
}

.number-tips li {
    color: #555;
    padding: 0.25rem 0;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 300px 1fr;
    }
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
        display: flex;
        flex-direction: column;
    }
    
    .sidebar {
        position: static;
        border-right: none;
        border-bottom: 1px solid #eee;
        padding-right: 0;
        padding-bottom: 2rem;
        margin-bottom: 2rem;
        order: 2;
    }

    .main-area {
        order: 1;
    }

    .converter-box {
        margin-bottom: 2rem;
    }

    .intro-section {
        margin-top: 2rem;
    }
} 

/* Documentation Pages Styles */
.content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin: 1rem 0;
}

.content h2 {
    color: #2c3e50;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

.content h2:first-of-type {
    margin-top: 1rem;
}

.content p {
    margin: 1rem 0;
    line-height: 1.7;
    color: #444;
}

.content ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.content li {
    margin: 0.8rem 0;
    line-height: 1.6;
    color: #444;
}

.content .footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    text-align: center;
}

.content .footer a {
    color: #3498db;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.content .footer a:hover {
    background-color: #f8f9fa;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .content {
        padding: 1.5rem;
        margin: 0.5rem 0;
        border-radius: 8px;
    }

    .content h1 {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .content h2 {
        font-size: 1.3rem;
        margin: 1.5rem 0 1rem;
    }

    .content p {
        font-size: 0.95rem;
        margin: 0.8rem 0;
    }

    .content ul {
        padding-left: 1.2rem;
    }

    .content li {
        font-size: 0.95rem;
        margin: 0.6rem 0;
    }

    /* 改善长文本在移动端的可读性 */
    .content {
        line-height: 1.8;
        word-wrap: break-word;
    }

    /* 优化列表项的间距 */
    .content ul li {
        padding-right: 10px;
    }

    /* 优化底部导航按钮 */
    .content .footer {
        margin-top: 1.5rem;
    }

    .content .footer a {
        display: inline-block;
        padding: 0.8rem 1.2rem;
        margin: 0.5rem;
        background-color: #f8f9fa;
        width: 100%;
        text-align: center;
    }

    button {
        padding: 1rem;
        font-size: 1.1rem;
    }
    
    .copy-button {
        padding: 0.8rem 1.2rem;
        font-size: 1rem;
    }
}

/* 针对超小屏幕的优化 */
@media (max-width: 375px) {
    .container {
        padding: 10px;
    }

    .content {
        padding: 1rem;
    }

    .content h1 {
        font-size: 1.6rem;
    }

    .content h2 {
        font-size: 1.2rem;
    }

    .content p, 
    .content li {
        font-size: 0.9rem;
    }
} 

/* Form Field Styles */
.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    min-width: 200px;
}

.form-field label {
    font-size: 0.9rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-field input,
.form-field select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #cbd5e0;
    border-radius: 5px;
    font-size: 1rem;
    color: #2c3e50;
    background-color: #ffffff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-field input:focus,
.form-field select:focus {
    border-color: #1a5a8e;
    box-shadow: 0 0 0 2px rgba(26, 90, 142, 0.2);
    outline: none;
}

.form-field input::placeholder {
    color: #718096;
}

/* Ensure button container doesn't stretch */
.form-field:last-child {
    min-width: auto;
    flex: 0 0 auto;
    align-self: flex-end;
}

/* Input Group Layout */
.input-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .form-field {
        width: 100%;
    }
    
    .form-field:last-child {
        width: auto;
    }
}