/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #f5f7fa;
    --text-color: #333333;
    --sidebar-bg: #ffffff;
    --content-bg: #ffffff;
    --border-color: #e0e6ed;
    --card-bg: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --resize-handle-color: #bdc3c7;
    --scrollbar-color: #bdc3c7;
    --scrollbar-hover-color: #95a5a6;
    --header-bg: #34495e;
    --accent-color: #34495e;
    --muted-text: #7f8c8d;
    --hover-bg: #ecf0f1;
    --highlight-bg: #e3f2fd;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    /* 防止横向滚动 */
    overflow-x: hidden;
    width: 100%;
    max-width: 100%;
}

.container {
    max-width: 100%;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-x: hidden;
}

/* ==================== 滚动条样式 ==================== */
/* 统一滚动条样式 - 应用于 html 和所有使用 .unified-scrollbar 类的元素 */
html,
.unified-scrollbar {
    scrollbar-width: auto;
    scrollbar-color: var(--scrollbar-color) transparent;
}

html::-webkit-scrollbar,
.unified-scrollbar::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

html::-webkit-scrollbar-track,
.unified-scrollbar::-webkit-scrollbar-track {
    background: transparent;
}

html::-webkit-scrollbar-thumb,
.unified-scrollbar::-webkit-scrollbar-thumb {
    background-color: var(--scrollbar-color);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: content-box;
}

html::-webkit-scrollbar-thumb:hover,
.unified-scrollbar::-webkit-scrollbar-thumb:hover {
    background-color: var(--scrollbar-hover-color);
    background-clip: content-box;
}

/* ==================== 按钮样式 ==================== */
.icon-btn {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 1.0rem;
    padding: 0.3rem 0.4rem;
    border-radius: 3px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 28px;
}

.icon-btn:hover {
    background-color: var(--hover-bg);
    transform: scale(1.15);
}

.icon-btn:active {
    filter: brightness(0.92);
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-color);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--muted-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-color) 20%, transparent);
    background: var(--content-bg);
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
    vertical-align: middle;
}

.form-group textarea {
    height: 120px;
    resize: none;
}

.form-group input[type="range"] {
    flex: 1;
}

.form-group input[type="range"]:focus {
    outline: none;
    box-shadow: none;
    border: none;
}

/* 输入框带切换按钮的样式 */
.input-with-toggle {
    position: relative;
    display: flex;
    align-items: center;
}

.password-toggle {
    position: absolute;
    right: 0.3rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.25rem;
    color: var(--muted-text);
    transition: color 0.2s ease;
}

.password-toggle:hover {
    color: var(--text-color);
}

/* Range 容器样式 */
.range-container {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 10px;
}

.range-value {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    color: var(--muted-text);
    font-size: 0.9rem;
    min-width: 40px;
    flex-shrink: 0;
}

/* Checkbox 样式 */
.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.checkbox-label {
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    margin: 0;
    font-weight: normal;
    user-select: none;
    display: flex;
    margin-bottom: 1.5rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--accent-color);
    margin-top: -3px;
}

.checkbox-label .checkbox-text {
    line-height: 1.5;
}

/* ==================== 对话框样式 ==================== */
.dialog-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1300;
}

.dialog-overlay.show {
    display: block;
}

.dialog-container {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1301;
}

.dialog-container.show {
    display: block;
}

.dialog {
    background: var(--content-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    width: 90%;
    min-width: 400px;
    max-width: 700px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.dialog-header {
    background: var(--header-bg);
    color: white;
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dialog-header h3 {
    margin: 0;
    font-size: 1.1rem;
}

.dialog-close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color 0.3s;
}

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

.dialog-content {
    padding: 1.5rem;
    color: var(--text-color);
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.dialog-content p {
    margin: 0;
    line-height: 1.6;
}

.dialog-footer {
    padding: 1rem;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    background-color: var(--card-bg);
}

.dialog-btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background-color 0.3s, box-shadow 0.3s;
}

.dialog-btn-primary {
    background-color: var(--accent-color);
    color: white;
}

.dialog-btn-primary:hover {
    background-color: color-mix(in srgb, var(--accent-color) 85%, black);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--accent-color) 30%, transparent);
}

.dialog-btn-secondary {
    background-color: var(--hover-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.dialog-btn-secondary:hover {
    background-color: var(--scrollbar-color);
}

.dialog-btn-danger {
    background-color: #e74c3c;
    color: white;
    border: 1px solid #c0392b;
}

.dialog-btn-danger:hover {
    background-color: #c0392b;
    box-shadow: 0 2px 8px color-mix(in srgb, #e74c3c 30%, transparent);
}

/* ==================== 登录/注册对话框样式 ==================== */
.login-dialog.show,
.register-dialog.show {
    display: block;
}

/* ==================== 状态提示样式 ==================== */
.status-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1500;
}

.status-overlay.show {
    display: block;
}

.status-message {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1501;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    font-size: 1.1rem;
    font-weight: 500;
    text-align: center;
    min-width: auto;
    animation: slideInUp 0.3s ease-out;
}

.status-message.show {
    display: block;
}

.status-message.success {
    color: #27ae60;
    background: transparent;
}

.status-message.error {
    color: #e74c3c;
    background: transparent;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translate(-50%, -40%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

/* ==================== 错误和成功消息 ==================== */
.error-message {
    background-color: color-mix(in srgb, #e53935 10%, var(--content-bg));
    color: #e53935;
    padding: 0.75rem;
    border-radius: 4px;
    margin-top: 0.5rem;
}

.success-message {
    background-color: color-mix(in srgb, #2e7d32 10%, var(--content-bg));
    color: #2e7d32;
    padding: 0.75rem;
    border-radius: 4px;
    margin-top: 0.5rem;
}

/* ==================== 用户相关样式 ==================== */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.user-avatar {
    font-size: 1.8rem;
    width: 3.2rem;
    height: 3.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--hover-bg) 0%, var(--content-bg) 100%);
    border-radius: 50%;
    border: 1px solid var(--accent-color);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--shadow-color) 40%, transparent);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.user-avatar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.3) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.user-info:hover .user-avatar::before {
    opacity: 1;
}

.user-info:hover .user-avatar {
    transform: scale(1.05);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--shadow-color) 60%, transparent);
}

.user-details {
    align-items: center;
    display: flex;
}

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    text-shadow: 0 1px 2px color-mix(in srgb, transparent 80%, var(--shadow-color));
    margin-right: 0.5rem;
}

/* ==================== 动画效果 ==================== */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ==================== 头像选择器样式（通用）==================== */
.avatar-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: 0.75rem;
}

.avatar-option {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-color);
}

.avatar-option:hover {
    border-color: var(--accent-color);
    background: var(--hover-bg);
    transform: scale(1.05);
}

.avatar-option.selected {
    border-color: var(--accent-color);
    background: var(--highlight-bg);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-color) 20%, transparent);
}

/* ==================== 登录对话框样式 ==================== */
.login-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1301;
    background: var(--content-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    min-width: 400px;
    max-width: 500px;
    overflow: hidden;
}

.login-header {
    background: var(--header-bg);
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.login-header h3 {
    margin: 0;
    color: #ffffff;
    font-size: 1.1rem;
}

.login-register-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #ffffff;
}

.login-register-link a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.login-register-link a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.login-form {
    padding: 1.25rem;
}

.login-form .form-group {
    margin-bottom: 1rem;
}

.login-form .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.login-form .form-group input {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-color);
}

.login-form .form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-color) 20%, transparent);
    background: var(--content-bg);
}

.login-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* ==================== 注册对话框样式 ==================== */
.register-dialog {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1301;
    background: var(--content-bg);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    min-width: 600px;
    max-width: 800px;
    overflow: hidden;
}

.register-header {
    background: var(--header-bg);
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.register-header h3 {
    margin: 0;
    color: #ffffff;
    font-size: 1.1rem;
}

.register-form {
    padding: 1.25rem;
}

.register-form .form-group {
    margin-bottom: 1rem;
}

.register-form .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.register-form .form-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-color);
}

.register-form .form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-color) 20%, transparent);
    background: var(--content-bg);
}

.register-error {
    padding: 0.75rem 1.25rem;
    margin: 0 1.25rem;
    background-color: color-mix(in srgb, #e53935 10%, var(--content-bg));
    color: #e53935;
    border-radius: 4px;
    border: 1px solid color-mix(in srgb, #e53935 25%, transparent);
    font-size: 0.9rem;
    line-height: 1.4;
}

.register-footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* ==================== 侧边栏切换按钮样式（公共）==================== */
/* 侧边栏内部的隐藏按钮（向左三分之一圆，位于侧边栏右边缘中间） */
#sidebar-toggle-btn {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: var(--header-bg);
    color: #fff;
    border: none;
    border-radius: 2.5rem 0 0 2.5rem;
    padding: 0;
    margin: 0;
    cursor: pointer;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: all 0.3s ease;
    width: 0.75rem;
    height: 2.5rem;
    line-height: 2.5rem;
    text-align: center;
    overflow: hidden;
    min-width: 0;
    max-width: 0.75rem;
    box-sizing: border-box;
    z-index: 1201;
}

#sidebar-toggle-btn:hover {
    opacity: 1;
    width: 1rem;
    max-width: 1rem;
}

/* 侧边栏关闭时，悬浮在左侧的打开按钮（向右三分之一圆） */
.sidebar-toggle-collapsed {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    background: var(--header-bg);
    color: #fff;
    border: none;
    border-radius: 0 2.5rem 2.5rem 0;
    padding: 0;
    cursor: pointer;
    font-size: 0.9rem;
    z-index: 1199;
    opacity: 0.8;
    transition: all 0.3s ease;
    width: 1rem;
    height: 2.5rem;
    line-height: 2.5rem;
    text-align: center;
    display: none;
}

.sidebar-toggle-collapsed:hover {
    opacity: 1;
    width: 1.25rem;
}

/* 移动端侧边栏遮罩层（公共）*/
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1199;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    display: none;
}

/* ==================== 验证码样式 ==================== */
.captcha-container {
    display: flex;
    gap: 8px;
    align-items: center;
}

.captcha-container input {
    flex: 1;
    min-width: 0;
}

.captcha-image {
    width: 100px;
    height: 34px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.captcha-image:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

/* ==================== 响应式设计（所有@media查询统一放在文件底部）==================== */

/* 平板和中等屏幕 */
@media (max-width: 768px) {
    .sidebar-overlay {
        display: block;
    }

    /* 确保所有元素不会导致横向滚动 */
    * {
        max-width: 100%;
    }

    /* 防止文本溢出 */
    body {
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    /* 防止图片溢出 */
    img {
        max-width: 100%;
        height: auto;
    }

    /* 防止表格溢出 */
    table {
        max-width: 100%;
        overflow-x: auto;
        display: block;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    .user-info-dialog,
    .login-dialog,
    .register-dialog,
    .user-switch_dialog,
    .create-user-dialog {
        min-width: 90vw;
        max-width: 90vw;
    }
    
    .current-avatar {
        font-size: 2.5rem;
        width: 4rem;
        height: 4rem;
    }
    
    #edit-avatar-selector {
        grid-template-columns: repeat(6, 1fr);
        max-width: 300px;
    }
    
    #edit-avatar-selector .avatar-option {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}