/* 菜籽游x纵流社群 - 低饱和柔和风 */
/* Google Fonts 移除（中国地区加载慢） */

@property --a {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

:root {
    /* 颜色系统 - 低饱和柔和 */
    --bg-primary: #f5f5f7;
    --bg-secondary: #eeeef0;
    --bg-tertiary: #e2e2e5;
    --bg-card: rgba(var(--white-rgb),0.7);
    --bg-glass: rgba(var(--white-rgb),0.5);
    
    --accent: #5b8cff;
    --accent-light: #7aa5ff;
    --orange: #e8a868;
    --purple: #9f8ad0;
    --pink: #e87a8a;
    --red: #e86a6a;
    --green: #7ab87a;
    --mint: #7ac0d0;
    --yellow: #d4c06a;
    
    --text-primary: #3a3a3e;
    --text-secondary: #7c7c82;
    --text-tertiary: #a8a8ae;
    
    --border-color: rgba(var(--border-rgb),0.06);
    --border-active: #5b8cff;
    --accent-rgb: 91,140,255;
    --accent-light-rgb: 122,165,255;
    --orange-rgb: 232,168,104;
    --purple-rgb: 159,138,208;
    --pink-rgb: 232,122,138;
    --red-rgb: 232,106,106;
    --green-rgb: 122,184,122;
    --mint-rgb: 122,192,208;
    --yellow-rgb: 212,192,106;
    --text-primary-rgb: 58,58,62;
    --text-secondary-rgb: 124,124,130;
    --text-tertiary-rgb: 168,168,174;
    --border-rgb: 60,60,67;
    --black-rgb: 0,0,0;
    --white-rgb: 255,255,255;
    
    /* 阴影 - 更轻更柔 */
    --shadow-sm: 0 1px 3px rgba(var(--black-rgb),0.04);
    --shadow-md: 0 4px 14px rgba(var(--black-rgb),0.04), 0 1px 3px rgba(var(--black-rgb),0.03);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.06), 0 2px 6px rgba(var(--black-rgb),0.03);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.08), 0 4px 12px rgba(var(--black-rgb),0.04);
    --shadow-inner: inset 0 1px 2px rgba(var(--black-rgb),0.03);
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 圆角 - 全部加大 */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* 字体 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', SFMono-Regular, Consolas, monospace;
    
    /* 过渡 */
    --transition-fast: 200ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-normal: 350ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-slow: 500ms cubic-bezier(0.25, 0.1, 0.25, 1);
    
    /* 布局 */
    --sidebar-width: 120px;
    --header-height: 64px;
    --container-max-width: 1200px;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ---------- 全局重置 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-sans);
}

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
}

#app {
    position: relative;
    width: 100%;
    min-height: 100vh;
    background: var(--bg-primary);
    overflow: hidden;
}

/* ---------- 页面容器 ---------- */
.page {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    overflow-y: auto;
}

.page.active {
    opacity: 1;
    visibility: visible;
}

/* ---------- 登录页样式 ---------- */
@property --a {
    syntax: '<angle>';
    inherits: false;
    initial-value: 0deg;
}

#login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, #d6d6dc 100%);
    min-height: 100vh;
    padding: var(--spacing-xl);
}

.login-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    min-height: 460px;
    background: repeating-conic-gradient(from var(--a), var(--accent) 0% 5%, transparent 5% 40%, var(--accent) 40% 50%);
    filter: drop-shadow(0 30px 80px rgba(0,122,255,0.2), var(--shadow-xl));
    border-radius: var(--radius-2xl);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: box-shadow 0.2s ease;
}

.login-container:hover,
.login-container.expanded {
    width: 400px;
    min-height: 460px;
}

.login-container.loading,
.login-container.loading::before {
    animation: loginRotating 4s linear infinite;
}

.login-container.loading::before {
    animation-delay: -1s;
}

@keyframes loginRotating {
    0% { --a: 0deg; }
    100% { --a: 360deg; }
}

.login-container::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: repeating-conic-gradient(from var(--a), var(--accent) 0% 5%, transparent 5% 40%, var(--accent) 40% 50%);
    filter: drop-shadow(0 30px 80px rgba(var(--accent-rgb),0.12));
    border-radius: var(--radius-2xl);
    pointer-events: none;
    animation: loginRotating 4s linear infinite;
}

.login-container::after {
    content: '';
    position: absolute;
    inset: 4px;
    background: rgba(var(--white-rgb),0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: calc(var(--radius-2xl) - 4px);
    border: 8px solid rgba(var(--white-rgb),0.5);
    pointer-events: none;
}

.login-box {
    position: absolute;
    inset: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    border-radius: var(--radius-lg);
    background: transparent;
    z-index: var(--z-modal);
    transition: inset 0.5s ease;
    overflow: hidden;
}

.login-container:hover .login-box,
.login-container.expanded .login-box {
    inset: 40px;
}

.login-form {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 14px;
    width: 100%;
    transform: translateY(0);
    transition: none;
}

.login-container:hover .login-form,
.login-container.expanded .login-form {
    transform: translateY(0);
}

.login-title {
    font-weight: 700;
    letter-spacing: -0.01em;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.login-subtitle {
    margin-top: -8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-title i {
    color: var(--accent);
}

.form-group {
    width: 100%;
    position: relative;
}

.form-input {
    width: 100%;
    padding: 16px 18px;
    outline: none;
    border: 1.5px solid rgba(var(--border-rgb),0.1);
    font-size: 0.95em;
    color: var(--text-primary);
    background: rgba(var(--white-rgb),0.7);
    border-radius: var(--radius-md);
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
    box-shadow: inset 0 1px 3px rgba(var(--black-rgb),0.04);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb),0.1), inset 0 1px 3px rgba(var(--black-rgb),0.04);
}

.form-input.error {
    border-color: var(--red);
    box-shadow: 0 0 0 3px rgba(var(--red-rgb),0.1), inset 0 1px 3px rgba(var(--black-rgb),0.04);
}

.form-input.success {
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(var(--green-rgb),0.1), inset 0 1px 3px rgba(var(--black-rgb),0.04);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.2s;
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
    letter-spacing: -0.01em;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0) scale(0.98);
}

.btn-primary {
    background: var(--accent);
    color: #FFFFFF;
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(var(--accent-rgb),0.3);
}

.btn-success {
    background: var(--green);
    color: #FFFFFF;
}

.btn-success:hover {
    box-shadow: 0 4px 20px rgba(var(--green-rgb),0.3);
}

.btn-danger {
    background: var(--red);
    color: #FFFFFF;
}

.btn-danger:hover {
    box-shadow: 0 4px 20px rgba(var(--red-rgb),0.3);
}

.btn-outline {
    background: rgba(var(--white-rgb),0.5);
    color: var(--accent);
    border: 1.5px solid rgba(var(--accent-rgb),0.15);
}

.btn-outline:hover {
    background: var(--accent);
    color: #FFFFFF;
    border-color: var(--accent);
}

.btn-block {
    width: 100%;
}

.form-links {
    width: 100%;
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    margin-top: 4px;
}

.form-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.form-links a:hover {
    color: var(--accent);
}

.form-links a.register {
    color: var(--accent);
    font-weight: 600;
}

/* ---------- 模态框样式 ---------- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(var(--black-rgb),0.5);
    backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-modal-backdrop);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: rgba(var(--black-rgb),0.85);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-xl);
    width: 350px;
    text-align: center;
    border: 1px solid var(--green);
    box-shadow: 0 0 30px rgba(var(--green-rgb),0.3);
}

.modal-title {
    color: var(--green);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.modal-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9em;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--pink);
}

/* ---------- 主页样式 ---------- */
#home-page {
    display: flex;
    flex-direction: column;
    background: transparent;
    backdrop-filter: blur(5px);
    min-height: 100vh;
}

/* 顶部栏 */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(var(--black-rgb),0.2);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
}

/* user-avatar 样式由 topbar.php 提供，这里只保留基本样式 */
.user-avatar {
    position: relative;
    cursor: pointer;
}

.user-avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-menu {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    background: rgba(var(--black-rgb),0.85);
    backdrop-filter: blur(10px);
    border: 1px solid var(--green);
    border-radius: var(--radius-none);
    width: 150px;
    padding: var(--spacing-xs) 0;
    display: none;
    z-index: var(--z-dropdown);
}

.avatar-menu.active {
    display: block;
}

.avatar-menu-item {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.avatar-menu-item:hover {
    background: var(--green);
    color: #1D1D1F;
}

.avatar-menu-item i {
    width: 20px;
    text-align: center;
}

/* 主内容区 */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    background: var(--bg-secondary);
}

/* 侧边栏 - 磨砂玻璃 */
.sidebar {
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    background: rgba(var(--white-rgb),0.65);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid rgba(var(--border-rgb),0.06);
    flex-shrink: 0;
    padding: 8px 0;
}

.sidebar-item {
    padding: 16px 12px;
    margin: 2px 8px;
    text-align: center;
    color: var(--text-secondary);
    cursor: pointer;
    background: transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-size: 0.8em;
    transition: all 0.25s cubic-bezier(0.25,0.1,0.25,1);
    position: relative;
    border-radius: var(--radius-lg);
}

.sidebar-item i {
    font-size: 1.4rem;
    color: var(--text-tertiary);
    transition: all 0.25s;
}

.sidebar-item:hover {
    background: rgba(var(--accent-rgb),0.04);
    color: var(--text-primary);
}

.sidebar-item:hover i {
    color: var(--accent);
}

.sidebar-item.active {
    background: rgba(var(--white-rgb),0.85);
    box-shadow: 0 2px 12px rgba(var(--black-rgb),0.04), 0 0 0 1px rgba(var(--accent-rgb),0.06);
    color: var(--text-primary);
    border: none;
}

.sidebar-item.active i {
    color: var(--accent);
}

/* 内容区域 */
.content-area {
    flex: 1;
    padding: 28px;
    overflow-y: auto;
    background: var(--bg-secondary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

.tab-title {
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tab-title i {
    color: var(--accent);
}

/* 工具箱样式 - 透明硅胶拟态卡 */
.tools-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.tool-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(var(--white-rgb),0.5);
    border-radius: var(--radius-xl);
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: box-shadow 0.3s, transform 0.2s;
}

.tool-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.tool-card-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 14px;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-card-title i {
    color: var(--accent);
}

.tool-input {
    width: 100%;
    padding: 14px;
    background: rgba(var(--white-rgb),0.6);
    border: 1.5px solid rgba(var(--border-rgb),0.08);
    color: var(--text-primary);
    font-family: var(--font-mono);
    margin-bottom: 12px;
    border-radius: var(--radius-md);
    font-size: 0.9em;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
    box-shadow: var(--shadow-inner);
}

.tool-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb),0.06), inset 0 1px 2px rgba(var(--black-rgb),0.03);
}

.tool-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.tool-btn {
    background: var(--accent);
    border: none;
    color: #FFFFFF;
    padding: 10px 18px;
    cursor: pointer;
    font-weight: 500;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
    transition: all 0.2s;
    box-shadow: 0 2px 6px rgba(var(--accent-rgb),0.15);
}

.tool-btn:hover {
    opacity: 0.9;
    box-shadow: 0 4px 12px rgba(91,140,255,0.2);
    transform: translateY(-1px);
}

.tool-btn:active {
    transform: translateY(0) scale(0.97);
}

.tool-output {
    background: rgba(var(--white-rgb),0.5);
    border: 1px solid rgba(var(--border-rgb),0.06);
    padding: 16px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    white-space: pre-wrap;
    word-wrap: break-word;
    min-height: 48px;
    border-radius: var(--radius-md);
    margin-top: 8px;
    font-size: 0.9em;
    line-height: 1.5;
    box-shadow: var(--shadow-inner);
}

/* 管理员面板 */
.pending-user-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    margin-bottom: 8px;
    border-left: 3px solid var(--orange);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.user-info {
    flex: 1;
}

.user-name {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.user-email {
    color: var(--text-secondary);
    font-size: 0.8em;
}

.user-actions {
    display: flex;
    gap: 8px;
}

.approve-btn {
    background: var(--green);
    color: #FFFFFF;
    border: none;
    padding: 8px 18px;
    cursor: pointer;
    font-weight: 600;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
    transition: all 0.2s;
    box-shadow: 0 2px 6px rgba(52,199,89,0.25);
}

.approve-btn:hover {
    opacity: 0.85;
    box-shadow: 0 4px 12px rgba(52,199,89,0.35);
}

.reject-btn {
    background: var(--red);
    color: #FFFFFF;
    border: none;
    padding: 8px 18px;
    cursor: pointer;
    font-weight: 600;
    border-radius: var(--radius-sm);
    font-size: 0.85em;
    transition: all 0.2s;
    box-shadow: 0 2px 6px rgba(255,59,48,0.25);
}

.reject-btn:hover {
    opacity: 0.85;
    box-shadow: 0 4px 12px rgba(255,59,48,0.35);
}

/* 底部消息栏 */
.bottom-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: rgba(var(--white-rgb),0.6);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-top: 1px solid rgba(var(--border-rgb),0.06);
}

.msg-btn {
    background: var(--accent);
    border: none;
    color: #FFFFFF;
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    box-shadow: 0 2px 6px rgba(var(--accent-rgb),0.15);
}

.msg-btn:hover {
    opacity: 0.9;
    box-shadow: 0 4px 12px rgba(91,140,255,0.2);
}

.recent-msg-container {
    cursor: pointer;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    max-width: 200px;
    font-size: 0.85em;
}

.recent-msg {
    color: var(--text-secondary);
    font-size: 0.85em;
}

.msg-input {
    background: rgba(var(--white-rgb),0.5);
    border: 1px solid rgba(var(--border-rgb),0.06);
    border-radius: var(--radius-full);
    padding: 8px 16px;
    color: var(--text-secondary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8em;
    transition: all 0.2s;
    box-shadow: var(--shadow-inner);
}

.msg-input:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb),0.05);
}

/* ---------- 私聊模态框 ---------- */
.chat-modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(var(--black-rgb),0.5);
    backdrop-filter: blur(4px);
}

.chat-modal.active {
    display: block;
}

.chat-modal-content {
    background: var(--bg-primary);
    margin: 5% auto;
    width: 80%;
    max-width: 900px;
    height: 80%;
    border: none;
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.chat-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.close-chat {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s;
}

.close-chat:hover {
    color: var(--danger);
}

.chat-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.chat-sidebar {
    width: 250px;
    border-right: 1px solid var(--green);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.chat-tabs {
    display: flex;
    border-bottom: 1px solid var(--green);
}

.chat-tab {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9em;
    transition: all var(--transition-fast);
}

.chat-tab:hover {
    color: var(--text-primary);
    background: rgba(var(--green-rgb),0.1);
}

.chat-tab.active {
    color: var(--green);
    border-bottom: 2px solid var(--green);
    background: rgba(var(--green-rgb),0.1);
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.chat-list-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    cursor: pointer;
    border-bottom: 1px solid rgba(var(--green-rgb),0.2);
    transition: all var(--transition-fast);
}

.chat-list-item:hover {
    background: rgba(var(--green-rgb),0.1);
}

.chat-list-item img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    margin-right: var(--spacing-md);
    border: 1px solid var(--green);
}

.chat-list-info {
    flex: 1;
    min-width: 0;
}

.chat-list-name {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9em;
    margin-bottom: 2px;
}

.chat-list-preview {
    color: var(--text-secondary);
    font-size: 0.8em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-list-time {
    color: var(--text-muted);
    font-size: 0.75em;
    margin-left: var(--spacing-sm);
}

.chat-area {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-conversation {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    background: rgba(var(--black-rgb),0.2);
}

.message-item {
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 70%;
    clear: both;
    animation: fadeIn 0.3s ease;
}

.message-item.sent {
    background: var(--green);
    color: #1D1D1F;
    float: right;
    border-radius: 10px 0 10px 10px;
}

.message-item.received {
    background: #3A3A3E;
    color: var(--text-primary);
    float: left;
    border-radius: 0 10px 10px 10px;
}

.message-content {
    font-size: 0.9em;
    line-height: 1.4;
}

.message-info {
    font-size: 0.7em;
    opacity: 0.7;
    margin-top: 2px;
    text-align: right;
}

.chat-input-area {
    display: flex;
    padding: var(--spacing-md);
    border-top: 1px solid var(--green);
    background: rgba(0, 0, 0, 0.3);
}

.chat-input {
    flex: 1;
    background: #2A2A2E;
    border: 1px solid var(--green);
    color: var(--text-primary);
    padding: var(--spacing-md);
    resize: none;
    font-family: var(--font-sans);
    font-size: 0.9em;
    border-radius: var(--radius-none);
}

.chat-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}

.send-btn {
    background: var(--green);
    border: none;
    color: #1D1D1F;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    margin-left: var(--spacing-sm);
    font-weight: 600;
    border-radius: var(--radius-none);
    transition: all var(--transition-fast);
}

.send-btn:hover {
    background: var(--green);
}

/* ---------- 名片浮窗 ---------- */
.card-modal, .settings-modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(var(--black-rgb),0.5);
    backdrop-filter: blur(5px);
}

.card-modal.active, .settings-modal.active {
    display: block;
}

.card-modal-content, .settings-modal-content {
    background: var(--bg-primary);
    margin: 10% auto;
    width: 350px;
    padding: var(--spacing-xl);
    border: 2px solid var(--green);
    color: var(--text-primary);
    position: relative;
    border-radius: var(--radius-none);
}

.close-card, .close-settings {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-lg);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.close-card:hover, .close-settings:hover {
    color: var(--pink);
}

.card-info {
    text-align: center;
}

.card-info img {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--green);
    box-shadow: 0 0 20px rgba(46, 204, 113, 0.5);
}

.card-info h3 {
    color: var(--green);
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
}

.card-info p {
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-size: 0.9em;
    line-height: 1.4;
}

.add-friend-btn {
    background: var(--green);
    border: none;
    color: #1D1D1F;
    padding: var(--spacing-sm) var(--spacing-xl);
    cursor: pointer;
    font-weight: 600;
    border-radius: var(--radius-none);
    transition: all var(--transition-fast);
}

.add-friend-btn:hover {
    background: var(--green);
    transform: translateY(-2px);
}

.settings-modal-content h3 {
    color: var(--green);
    margin-bottom: var(--spacing-lg);
    font-size: 1.25rem;
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9em;
}

.settings-input, .settings-textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: #2A2A2E;
    border: 1px solid var(--green);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9em;
    border-radius: var(--radius-none);
}

.settings-textarea {
    min-height: 100px;
    resize: vertical;
}

.settings-input:focus, .settings-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}

.save-btn {
    background: var(--green);
    border: none;
    color: #1D1D1F;
    padding: var(--spacing-md) var(--spacing-xl);
    cursor: pointer;
    font-weight: 600;
    border-radius: var(--radius-none);
    transition: all var(--transition-fast);
    margin-top: var(--spacing-md);
}

.save-btn:hover {
    background: var(--green);
    transform: translateY(-2px);
}

/* ---------- 动画效果 ---------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 768px) {