/* =================================================================
 友链系统样式 (style.css)
 [v2.1 - 修复布局 + 增加复制按钮样式]
 ================================================================= */

:root {
    --color-primary: #007bff;
    --color-primary-dark: #0056b3;
    --color-light: #ffffff;
    --color-dark: #333;
    --color-bg: #f4f7f6;
    --color-border: #dee2e6;
    --color-text: #495057;
    --color-success: #28a745;
    --color-error: #dc3545;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

.link-container {
    width: 100%;
    max-width: 600px;
    background-color: var(--color-light);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.link-header {
    background-color: var(--color-light);
    border-bottom: 1px solid var(--color-border);
}

.link-nav {
    display: flex;
    justify-content: space-around;
    padding: 0;
    margin: 0;
}

.link-nav a {
    flex: 1;
    padding: 16px 12px;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: all 0.2s ease-in-out;
    cursor: pointer;
}

.link-nav a:hover {
    background-color: #f8f9fa;
    color: var(--color-primary);
}

.link-nav a.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.link-content {
    padding: 0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 合作须知页面 */
.content-box h2 {
    color: var(--color-dark);
    margin-top: 0;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 10px;
}

.content-box ol {
    padding-left: 0; /* [v2.1] 移除默认内边距，用 li 控制 */
    list-style-type: none; /* 移除默认数字 */
    line-height: 1.8;
    counter-reset: ol-counter; /* [v2.1] 自定义计数器 */
}

.content-box li {
    /* [v2.1] 启用 Flex 布局实现对齐 */
    display: flex;
    margin-bottom: 12px;
    counter-increment: ol-counter; /* 计数器+1 */
}

.content-box li::before {
    /* [v2.1] 自定义数字 */
    content: counter(ol-counter) ".";
    color: var(--color-dark);
    font-weight: 600;
    min-width: 20px;
}

.content-box li strong {
    color: var(--color-dark);
    /* [v2.1] 固定宽度和对齐 */
    flex-basis: 90px;
    flex-shrink: 0;
    margin-right: 8px;
    margin-left: 5px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-sizing: border-box; 
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
    outline: none;
}

.form-group input::placeholder {
    color: #aab;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 20px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-light);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
}

.btn-full {
    width: 100%;
}

/* 消息提示 */
.message {
    padding: 16px;
    margin-bottom: 20px;
    border-radius: var(--radius);
    line-height: 1.6;
    border: 1px solid transparent;
}

.message.success {
    background-color: #e6f7ec;
    border-color: #b7ebc9;
    color: #1f7741;
}

.message.error {
    background-color: #fdecea;
    border-color: #f8c6c7;
    color: #a82c2e;
}

/* 手机自适应 */
@media (max-width: 640px) {
    body {
        padding: 0;
        background-color: var(--color-light);
    }
    .link-container {
        width: 100%;
        max-width: none;
        border-radius: 0;
        box-shadow: none;
    }
    
    /* [v2.1] 合作须知页面的移动端适配 */
    .content-box li {
        display: flex;
        flex-direction: column; /* 垂直堆叠 */
        margin-bottom: 18px;
        line-height: 1.6;
    }
    .content-box li::before {
        /* 在堆叠时，序号保持在行内 */
        display: inline-block;
        width: auto;
        margin-right: 5px;
    }
    .content-box li strong {
        /* [v2.1] 移除PC端的固定宽度，并添加间距 */
        flex-basis: auto;
        min-width: 0;
        margin-left: 20px; /* 与序号对齐 */
        margin-bottom: 4px;
        font-weight: 600;
    }
}

/* =================================================================
   [v2.1] AJAX + 复制按钮样式
   ================================================================= */
.content-box {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
    padding: 24px;
}
.content-box.active-page {
    display: block;
}
.message-container {
    padding: 0 24px;
}
.message {
    display: none;
    margin-bottom: 0;
    margin-top: 24px;
}
.message-container:first-child .message {
    margin-top: 0;
}
.content-box > *:first-child {
    margin-top: 0;
}

/* [v2.1 新增] 一键复制样式 */
.link-copy-wrapper {
    display: flex;
    margin-top: 12px;
    background-color: var(--color-light);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    overflow: hidden;
}
.link-copy-wrapper input[type='text'] {
    flex-grow: 1;
    padding: 8px 12px;
    border: none;
    background-color: #f8f9fa;
    color: var(--color-primary);
    font-weight: 500;
    font-size: 14px;
}
.link-copy-wrapper input[type='text']:focus {
    outline: none;
    box-shadow: none;
}
.btn-copy {
    flex-shrink: 0;
    padding: 0 16px;
    border: none;
    background: var(--color-primary);
    color: var(--color-light);
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    border-radius: 0;
    transition: all 0.2s ease;
}
.btn-copy:hover {
    background: var(--color-primary-dark);
}

@media (max-width: 640px) {
    .content-box {
        padding: 20px 15px;
    }
    .message-container {
        padding: 0 15px;
    }
}