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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--gradient-bg);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
    outline: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 页面切换 */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* 登录页面 */
#login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-4);
    position: relative;
    overflow: hidden;
    background: var(--gradient-bg);
    background-attachment: fixed;
}

.login-container {
    width: 100%;
    max-width: 420px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-2xl);
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-4);
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.logo .material-icons-outlined {
    font-size: 40px;
    color: white;
}

.login-header h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
    font-family: var(--font-family-display);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.02em;
}

.login-header .subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-bg-input);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.input-wrapper:focus-within {
    background: var(--color-bg-input-focus);
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

.input-wrapper .material-icons-outlined {
    position: absolute;
    left: var(--spacing-4);
    color: var(--color-text-tertiary);
    font-size: 20px;
    transition: color var(--transition-base);
}

.input-wrapper:focus-within .material-icons-outlined {
    color: var(--color-primary);
}

.input-wrapper input {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-4) var(--spacing-4) var(--spacing-12);
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

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

.toggle-password {
    position: absolute;
    right: var(--spacing-4);
    color: var(--color-text-tertiary);
    padding: var(--spacing-1);
    transition: color var(--transition-base);
}

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

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.remember-me {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
    color: var(--color-text-secondary);
}

.remember-me input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    position: relative;
}

.remember-me input:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.remember-me input:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.forgot-password {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}

.forgot-password:hover {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.login-btn {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--gradient-primary);
    color: white;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.login-btn:active {
    transform: translateY(0);
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto;
}

.login-btn.loading .btn-text {
    display: none;
}

.login-btn.loading .btn-loader {
    display: block;
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-4);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.login-footer a {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

.login-error {
    display: none;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: rgba(234, 67, 53, 0.1);
    border: 1px solid rgba(234, 67, 53, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-4);
}

.login-error.show {
    display: flex;
}

.login-error .material-icons-outlined {
    font-size: 18px;
}

.login-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--gradient-primary);
    top: -100px;
    right: -100px;
    animation: float 6s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--gradient-secondary);
    bottom: -50px;
    left: -50px;
    animation: float 8s ease-in-out infinite reverse;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--gradient-success);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float 10s ease-in-out infinite;
}

.shape-4 {
    width: 100px;
    height: 100px;
    background: var(--gradient-warning);
    top: 20%;
    left: 20%;
    animation: float 7s ease-in-out infinite reverse;
}

/* 注册页面 */
#register-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-4);
}

.register-container {
    width: 100%;
    max-width: 420px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-2xl);
    animation: slideUp 0.6s ease-out;
}

.register-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-8);
}

.back-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.back-btn:hover {
    background: var(--color-bg-input-focus);
    transform: translateX(-2px);
}

.register-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

.register-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.register-btn {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--gradient-primary);
    color: white;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.register-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.register-btn.loading .btn-text {
    display: none;
}

.register-btn.loading .btn-loader {
    display: block;
}

/* 主页面 */
#main-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    overflow: hidden;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    flex-shrink: 0;
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.menu-toggle:hover {
    background: var(--color-bg-input-focus);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo .material-icons-outlined {
    font-size: 28px;
    color: var(--color-primary);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-center {
    flex: 1;
    max-width: 600px;
    margin: 0 var(--spacing-6);
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-bg-input);
    border: 2px solid transparent;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.search-container:focus-within {
    background: var(--color-bg-input-focus);
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

.search-container .material-icons-outlined {
    position: absolute;
    left: var(--spacing-4);
    color: var(--color-text-tertiary);
    font-size: 20px;
}

.search-container input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-12);
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

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

.search-shortcut {
    position: absolute;
    right: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
}

.search-shortcut kbd {
    padding: 2px 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.header-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
}

.header-btn:hover {
    background: var(--color-bg-input-focus);
    color: var(--color-text-primary);
    transform: translateY(-2px);
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    color: white;
    transition: all var(--transition-base);
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.user-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-2);
    width: 240px;
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    z-index: var(--z-dropdown);
    animation: fadeIn 0.2s ease-out;
}

.user-dropdown.show {
    display: block;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--color-border);
}

.user-info .material-icons-outlined {
    color: var(--color-primary);
}

.user-info .username {
    font-weight: var(--font-weight-medium);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-2) 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.dropdown-item:hover {
    background: var(--color-bg-card-hover);
    color: var(--color-text-primary);
}

.dropdown-item .material-icons-outlined {
    font-size: 18px;
}

/* 用户菜单 - PC端header */
.user-menu-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--color-bg-input);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    height: 40px;
}

.user-menu-trigger:hover {
    background: var(--color-bg-input-focus);
    color: var(--color-text-primary);
    border-color: var(--color-primary);
}

.user-menu-trigger .material-icons-outlined {
    font-size: 20px;
}

.user-menu-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-menu-arrow {
    font-size: 16px;
    transition: transform var(--transition-base);
}

.user-menu.open .user-menu-arrow {
    transform: rotate(180deg);
}

.user-dropdown-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
}

.user-dropdown-header .material-icons-outlined {
    font-size: 32px;
    color: var(--color-primary);
}

.user-dropdown-info {
    flex: 1;
    min-width: 0;
}

.user-dropdown-name {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.user-dropdown-id {
    font-size: 11px;
    color: var(--color-text-tertiary);
    margin-top: 2px;
    font-family: 'JetBrains Mono', monospace;
    word-break: break-all;
}

.user-dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-1) 0;
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    width: 100%;
    padding: 10px var(--spacing-4);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    border: none;
    background: none;
    cursor: pointer;
    text-align: left;
}

.user-dropdown-item:hover {
    background: var(--color-bg-card-hover);
    color: var(--color-text-primary);
}

.user-dropdown-item .material-icons-outlined {
    font-size: 18px;
}

.user-dropdown-item-danger {
    color: var(--color-error, #ef4444);
}

.user-dropdown-item-danger:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error, #ef4444);
}

/* 移动端隐藏用户菜单trigger（移动端用底部导航的"我的"） */
@media (max-width: 768px) {
    .user-menu {
        display: none;
    }
}

/* 主内容区域 */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* 侧边栏 */
.sidebar {
    width: 280px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-slow);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-header h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.add-folder-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
}

.add-folder-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: rotate(90deg);
}

.folder-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-4);
}

.folder-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.folder-item:hover {
    background: var(--color-bg-card-hover);
    color: var(--color-text-primary);
}

.folder-item.active {
    background: var(--color-primary);
    color: white;
}

.folder-item .material-icons-outlined {
    font-size: 20px;
}

.folder-name {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.folder-count {
    font-size: var(--font-size-xs);
    background: var(--color-bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    min-width: 24px;
    text-align: center;
}

.folder-item.active .folder-count {
    background: rgba(255, 255, 255, 0.2);
}

.folder-delete-btn {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: var(--radius-sm);
    color: var(--color-text-tertiary);
    opacity: 0;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.folder-item:hover .folder-delete-btn {
    opacity: 1;
}

.folder-delete-btn:hover {
    background: rgba(234, 67, 53, 0.1);
    color: var(--color-error);
}

.folder-delete-btn .material-icons-outlined {
    font-size: 16px;
}

.sidebar-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--color-border);
}

.storage-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.storage-info .material-icons-outlined {
    font-size: 18px;
}

/* 内容区域 */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: var(--spacing-6);
}

.content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.breadcrumb .material-icons-outlined {
    font-size: 18px;
}

.content-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.sort-dropdown {
    position: relative;
}

.sort-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.sort-btn:hover {
    background: var(--color-bg-input-focus);
    color: var(--color-text-primary);
}

.sort-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-2);
    width: 180px;
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-dropdown);
    animation: fadeIn 0.2s ease-out;
}

.sort-menu.show {
    display: block;
}

.sort-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
}

.sort-option:hover {
    background: var(--color-bg-card-hover);
    color: var(--color-text-primary);
}

.sort-option.active {
    color: var(--color-primary);
    background: rgba(26, 115, 232, 0.1);
}

.sort-option .material-icons-outlined {
    font-size: 18px;
}

.filter-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
}

.filter-btn:hover {
    background: var(--color-bg-input-focus);
    color: var(--color-text-primary);
}

/* 网站网格 */
.websites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-6);
}

.website-card {
    background: var(--gradient-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.website-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.website-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.website-card:hover::before {
    opacity: 1;
}

.website-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.website-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    font-size: 24px;
    transition: all var(--transition-base);
}

.website-card:hover .website-icon {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

.website-actions {
    display: flex;
    gap: var(--spacing-1);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.website-card:hover .website-actions {
    opacity: 1;
}

.website-action-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.website-action-btn:hover {
    background: var(--color-primary);
    color: white;
}

.website-action-btn .material-icons-outlined {
    font-size: 16px;
}

.website-info {
    margin-bottom: var(--spacing-4);
}

.website-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
    color: var(--color-text-primary);
}

.website-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.website-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.website-folder {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.website-folder .material-icons-outlined {
    font-size: 14px;
}

.website-visits {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.website-visits .material-icons-outlined {
    font-size: 14px;
}

.website-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin-top: var(--spacing-3);
}

.website-tag {
    padding: 2px 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

/* 空状态 */
.empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-16) var(--spacing-4);
    text-align: center;
}

.empty-state.show {
    display: flex;
}

.empty-state .material-icons-outlined {
    font-size: 64px;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-6);
}

.empty-state h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
    color: var(--color-text-secondary);
}

.empty-state p {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-8);
    max-width: 400px;
}

.add-first-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--gradient-primary);
    color: white;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.add-first-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 我的页面 */
#profile-page {
    background: var(--color-bg-primary);
}

#profile-page .main-content {
    padding: var(--spacing-4);
    padding-bottom: 80px;
}

.profile-section {
    max-width: 500px;
    margin: 0 auto;
}

.profile-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--spacing-4);
}

.profile-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.profile-avatar .material-icons-outlined {
    font-size: 28px;
    color: white;
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    overflow: hidden;
}

.profile-username {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.profile-role {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.profile-menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    margin-bottom: var(--spacing-4);
}

.profile-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--glass-border);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: background var(--transition-base);
    width: 100%;
    text-align: left;
}

.profile-menu-item:last-child {
    border-bottom: none;
}

.profile-menu-item:hover {
    background: var(--color-bg-input);
}

.profile-menu-item .material-icons-outlined:first-child {
    font-size: 20px;
    color: var(--color-text-secondary);
}

.profile-menu-text {
    flex: 1;
}

.profile-menu-arrow {
    font-size: 18px;
    color: var(--color-text-tertiary);
}

.profile-logout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    width: 100%;
    padding: var(--spacing-4);
    background: transparent;
    border: 1px solid var(--color-error);
    border-radius: var(--radius-xl);
    color: var(--color-error);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-base);
}

.profile-logout-btn:hover {
    background: var(--color-error);
    color: white;
}

.profile-logout-btn .material-icons-outlined {
    font-size: 20px;
}

/* 移动端底部导航 */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-2) var(--spacing-4);
    z-index: var(--z-fixed);
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--spacing-2);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    transition: all var(--transition-base);
}

.mobile-nav-item.active {
    color: var(--color-primary);
}

.mobile-nav-item .material-icons-outlined {
    font-size: 24px;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    padding: var(--spacing-4);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-overlay);
    animation: fadeIn 0.3s ease-out;
}

.modal-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow-y: auto;
    animation: slideUp 0.3s ease-out;
}

.modal-sm {
    max-width: 400px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    color: var(--color-text-secondary);
}

.modal-close:hover {
    background: var(--color-error);
    color: white;
    transform: rotate(90deg);
}

.modal-form {
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg-input);
    color: var(--color-text-secondary);
}

.btn-secondary:hover {
    background: var(--color-bg-input-focus);
    color: var(--color-text-primary);
}

.btn-danger {
    background: var(--color-error);
    color: white;
}

.btn-danger:hover {
    background: #d32f2f;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loader {
    display: block;
}

/* 图标选择器 */
.icon-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.icon-preview {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
    font-size: 24px;
    flex-shrink: 0;
}

.icon-options {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-2);
    flex: 1;
}

.icon-option {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.icon-option:hover {
    background: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

.icon-option.selected {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.icon-option .material-icons-outlined {
    font-size: 20px;
}

/* 选择器 */
.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-bg-input);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.select-wrapper:focus-within {
    background: var(--color-bg-input-focus);
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

.select-wrapper .material-icons-outlined {
    position: absolute;
    left: var(--spacing-4);
    color: var(--color-text-tertiary);
    font-size: 20px;
    pointer-events: none;
}

.select-wrapper select {
    width: 100%;
    padding: var(--spacing-4) var(--spacing-4) var(--spacing-4) var(--spacing-12);
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

.select-wrapper select option {
    background: var(--color-bg-card);
    color: var(--color-text-primary);
}

/* 标签输入 */
.tags-input {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--color-bg-input);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    min-height: 44px;
    align-items: center;
}

.tags-input:focus-within {
    background: var(--color-bg-input-focus);
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.tag-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 2px 8px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
}

.tag-remove {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: 12px;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.tag-remove:hover {
    background: rgba(255, 255, 255, 0.5);
}

.tags-input input {
    flex: 1;
    min-width: 100px;
    padding: var(--spacing-1);
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
}

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

/* 颜色选择器 */
.color-picker {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.color-option {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 3px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.active {
    border-color: white;
    box-shadow: 0 0 0 2px var(--color-primary);
}

.color-option.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 16px;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* 设置模态框 */
.settings-content {
    padding: var(--spacing-6);
}

.settings-section {
    margin-bottom: var(--spacing-8);
}

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

.settings-section h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
    color: var(--color-text-primary);
    padding-bottom: var(--spacing-2);
    border-bottom: 1px solid var(--color-border);
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--color-border);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    flex: 1;
}

.setting-info .material-icons-outlined {
    color: var(--color-primary);
    font-size: 24px;
}

.setting-title {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-1);
}

.setting-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* 切换开关 */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-gray-400);
    transition: var(--transition-base);
    border-radius: 26px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--color-primary);
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

/* 确认对话框 */
.confirm-content {
    padding: var(--spacing-6);
    text-align: center;
}

.confirm-icon {
    font-size: 48px;
    color: var(--color-warning);
    margin-bottom: var(--spacing-4);
}

.confirm-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* 通知 */
.notifications {
    position: fixed;
    top: var(--spacing-4);
    right: var(--spacing-4);
    z-index: var(--z-notification);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    max-width: 400px;
}

.notification {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: var(--color-bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease-out;
    min-width: 300px;
}

.notification.success {
    border-left: 4px solid var(--color-success);
}

.notification.error {
    border-left: 4px solid var(--color-error);
}

.notification.warning {
    border-left: 4px solid var(--color-warning);
}

.notification.info {
    border-left: 4px solid var(--color-info);
}

.notification-icon {
    font-size: 24px;
}

.notification.success .notification-icon {
    color: var(--color-success);
}

.notification.error .notification-icon {
    color: var(--color-error);
}

.notification.warning .notification-icon {
    color: var(--color-warning);
}

.notification.info .notification-icon {
    color: var(--color-info);
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-1);
}

.notification-message {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.notification-close {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.notification-close:hover {
    background: var(--color-bg-input);
    color: var(--color-text-primary);
}

.notification-close .material-icons-outlined {
    font-size: 18px;
}

/* 同步按钮 */
.sync-btn {
    position: relative;
}

.sync-btn.syncing {
    pointer-events: none;
}

.sync-btn.syncing .material-icons-outlined {
    animation: syncSpin 1s linear infinite;
}

@keyframes syncSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==============================
   移动端响应式设计（全面优化）
   ============================== */

/* 平板及以下：侧边栏改为固定遮罩式 */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 280px;
        z-index: var(--z-fixed);
        transform: translateX(-100%);
        box-shadow: var(--shadow-2xl);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .search-shortcut {
        display: none;
    }
    
}

/* 手机端主断点 */
@media (max-width: 768px) {
    /* ===== 顶栏优化 ===== */
    .main-header {
        padding: var(--spacing-3) var(--spacing-3);
        gap: var(--spacing-2);
    }
    
    /* 隐藏顶部logo图标 */
    .header-left .logo {
        display: none;
    }
    
    .header-center {
        margin: 0;
        min-width: 0;
        flex: 0 0 auto;
    }
    
    .logo-text {
        display: none;
    }

    /* 移动端隐藏搜索框，显示搜索图标 */
    .search-container {
        display: none;
    }

    .search-container.mobile-expanded {
        display: flex;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: var(--z-sticky);
        background: var(--glass-bg);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
        padding: var(--spacing-3);
        border-bottom: 1px solid var(--glass-border);
        animation: slideDown 0.2s ease-out;
    }

    .search-container.mobile-expanded input {
        font-size: 16px;
        padding: var(--spacing-3) var(--spacing-3) var(--spacing-3) var(--spacing-10);
    }

    .mobile-search-btn {
        display: flex;
        width: 36px;
        height: 36px;
        align-items: center;
        justify-content: center;
        background: var(--color-bg-input);
        border-radius: var(--radius-md);
        color: var(--color-text-secondary);
        transition: all var(--transition-base);
    }

    .mobile-search-btn:hover {
        background: var(--color-bg-input-focus);
        color: var(--color-text-primary);
    }

    .mobile-search-btn .material-icons-outlined {
        font-size: 20px;
    }

    @keyframes slideDown {
        from { transform: translateY(-100%); opacity: 0; }
        to { transform: translateY(0); opacity: 1; }
    }
    
    /* header右侧紧凑排列 */
    .header-right {
        gap: 2px;
    }
    
    .header-btn,
    .menu-toggle,
    .user-avatar {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }
    
    .header-btn .material-icons-outlined,
    .menu-toggle .material-icons-outlined,
    .user-avatar .material-icons-outlined {
        font-size: 18px;
    }
    
    /* 隐藏不需要的header按钮 */
    .header-btn#settings-btn,
    .header-btn#view-toggle,
    .header-btn#theme-toggle {
        display: none;
    }

    /* 移动端隐藏菜单按钮（文件夹用底部导航） */
    .menu-toggle {
        display: none;
    }
    
    /* 同步按钮移动端增大触摸区域 */
    .header-btn#sync-btn {
        min-width: 44px;
        min-height: 44px;
        position: relative;
    }
    
    .header-btn#sync-btn::after {
        content: '';
        position: absolute;
        inset: -4px;
    }
    
    /* ===== 内容区域 ===== */
    .content {
        padding: var(--spacing-2);
        padding-bottom: 72px;
    }
    
    .content-header {
        flex-wrap: wrap;
        gap: var(--spacing-2);
        margin-bottom: var(--spacing-2);
    }
    
    .breadcrumb {
        font-size: var(--font-size-sm);
    }
    
    /* ===== 网站卡片网格 - 移动端4列圆形图标风格 ===== */
    .websites-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px 6px;
    }
    
    /* 卡片紧凑样式 - 圆形图标 + 名称 */
    .website-card {
        padding: 8px 4px 6px;
        border-radius: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        position: relative;
        min-height: 0;
        border: none;
        background: transparent;
        box-shadow: none;
        transition: none;
    }

    .website-card::before,
    .website-card::after {
        display: none !important;
    }

    .website-card:hover {
        transform: none;
        box-shadow: none;
        border-color: transparent;
    }

    .website-card:active {
        transform: scale(0.92);
    }
    
    .website-card-header {
        margin-bottom: 0;
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .website-icon {
        width: 48px;
        height: 48px;
        font-size: 22px;
        border-radius: 50%;
        margin-bottom: 4px;
        background: var(--color-bg-input);
        color: var(--color-primary);
        flex-shrink: 0;
        box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        transition: transform 0.15s ease;
    }

    .theme-dark .website-icon {
        background: rgba(255,255,255,0.08);
        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }

    .website-card:active .website-icon {
        transform: scale(1.08);
    }
    
    .website-actions {
        opacity: 1;
        position: absolute;
        top: 2px;
        right: 2px;
        gap: 0;
        z-index: 2;
    }

    .website-action-btn {
        width: 20px;
        height: 20px;
        background: rgba(0,0,0,0.25);
        border-radius: 50%;
        backdrop-filter: blur(4px);
    }

    .website-action-btn .material-icons-outlined {
        font-size: 12px;
        color: rgba(255,255,255,0.7);
    }

    .website-action-btn:hover {
        background: rgba(13, 148, 136, 0.6);
    }

    .website-info {
        margin-bottom: 0;
        width: 100%;
        overflow: hidden;
    }

    .website-name {
        font-size: 10px;
        font-weight: 500;
        line-height: 1.3;
        margin-bottom: 0;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
        color: var(--color-text-secondary);
    }

    /* 移动端隐藏次要信息 */
    .website-description,
    .website-meta,
    .website-tags {
        display: none !important;
    }
    
    /* ===== 侧边栏 - 移动端不使用 ===== */
    .sidebar {
        display: none !important;
    }
    
    /* ===== 底部导航 ===== */
    .mobile-nav {
        display: flex;
        justify-content: space-around;
        padding: var(--spacing-1) var(--spacing-2);
        padding-bottom: max(var(--spacing-1), env(safe-area-inset-bottom));
        z-index: var(--z-fixed);
    }
    
    .mobile-nav-item {
        min-height: 48px;
        padding: var(--spacing-2) var(--spacing-1);
        flex: 1;
        max-width: 80px;
    }
    
    .mobile-nav-item .material-icons-outlined {
        font-size: 22px;
    }
    
    .main-content {
        padding-bottom: 0;
    }
    
    /* ===== 底部面板 ===== */
    .mobile-bottom-sheet {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: var(--z-modal);
    }

    .mobile-bottom-sheet.show {
        display: block;
    }

    .bottom-sheet-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.6);
        animation: fadeIn 0.2s ease-out;
    }

    .bottom-sheet-content {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        max-height: 70vh;
        background: var(--color-bg-card);
        border-radius: 20px 20px 0 0;
        overflow-y: auto;
        padding-bottom: 60px;
        animation: slideUpMobile 0.3s ease-out;
    }

    .bottom-sheet-handle {
        width: 36px;
        height: 4px;
        background: var(--color-gray-400);
        border-radius: 2px;
        margin: 10px auto 0;
    }

    .bottom-sheet-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: var(--spacing-3) var(--spacing-4);
        border-bottom: 1px solid var(--glass-border);
    }

    .bottom-sheet-header h3 {
        font-size: var(--font-size-lg);
        font-weight: var(--font-weight-semibold);
    }

    /* 文件夹网格 */
    .folder-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
        padding: var(--spacing-4);
    }

    .folder-grid-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        padding: 10px 4px;
        border-radius: 12px;
        cursor: pointer;
        transition: background 0.15s ease;
        position: relative;
    }

    .folder-grid-item:active {
        background: var(--color-bg-card-hover);
    }

    .folder-grid-item.active {
        background: rgba(13, 148, 136, 0.1);
    }

    .folder-grid-icon {
        width: 44px;
        height: 44px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 20px;
    }

    .folder-grid-item .folder-grid-name {
        font-size: 11px;
        color: var(--color-text-secondary);
        text-align: center;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 100%;
    }

    .folder-grid-item.active .folder-grid-name {
        color: var(--color-primary);
        font-weight: 600;
    }

    .folder-grid-item .folder-grid-count {
        font-size: 9px;
        color: var(--color-text-tertiary);
    }

    .folder-grid-delete {
        position: absolute;
        top: 2px;
        right: 2px;
        width: 18px;
        height: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(0,0,0,0.2);
        border-radius: 50%;
        backdrop-filter: blur(4px);
        opacity: 0;
        transition: opacity 0.15s;
    }

    .folder-grid-item:hover .folder-grid-delete,
    .folder-grid-item:active .folder-grid-delete {
        opacity: 1;
    }

    .folder-grid-delete .material-icons-outlined {
        font-size: 11px;
        color: rgba(255,255,255,0.7);
    }

    /* Profile sheet body */
    .profile-sheet-body {
        padding: var(--spacing-4);
    }

    .profile-sheet-body .profile-card {
        margin-bottom: var(--spacing-3);
    }

    .profile-sheet-body .profile-menu {
        margin-bottom: var(--spacing-3);
    }

    /* ===== 模态框优化 ===== */
    .modal {
        padding: 0;
    }
    
    .modal.show {
        align-items: flex-end;
    }
    
    .modal-container {
        margin: 0;
        max-height: 90vh;
        border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
        animation: slideUpMobile 0.3s ease-out;
    }
    
    .modal-header {
        padding: var(--spacing-4);
        min-height: 56px;
    }
    
    .modal-form {
        padding: var(--spacing-4);
    }
    
    .modal-actions {
        gap: var(--spacing-2);
    }
    
    .modal-actions .btn {
        flex: 1;
    }
    
    .icon-options {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .icon-option {
        width: 36px;
        height: 36px;
    }
    
    /* ===== 通知优化 ===== */
    .notifications {
        left: var(--spacing-3);
        right: var(--spacing-3);
        top: var(--spacing-3);
        max-width: none;
        gap: var(--spacing-2);
    }
    
    .notification {
        min-width: auto;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .notification-icon {
        font-size: 20px;
    }
    
    .notification-title {
        font-size: var(--font-size-sm);
    }
    
    .notification-message {
        font-size: var(--font-size-xs);
    }
    
    /* ===== 用户下拉菜单优化 ===== */
    .user-dropdown {
        position: fixed;
        right: var(--spacing-3);
        bottom: 80px;
        left: var(--spacing-3);
        width: auto;
        margin-top: 0;
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-2xl);
        z-index: var(--z-popover);
        max-height: calc(100vh - 160px);
        overflow-y: auto;
    }
    
    .user-info {
        padding: var(--spacing-4);
    }
    
    .dropdown-item {
        padding: var(--spacing-4);
    }
    
    /* ===== 排序菜单优化 ===== */
    .sort-dropdown {
        position: static;
    }
    
    .sort-menu {
        position: fixed;
        left: var(--spacing-3);
        right: var(--spacing-3);
        top: auto;
        bottom: 80px;
        width: auto;
        border-radius: var(--radius-xl);
        box-shadow: var(--shadow-2xl);
    }
    
    .sort-option {
        padding: var(--spacing-4);
    }
    
    /* ===== 空状态优化 ===== */
    .empty-state {
        padding: var(--spacing-8) var(--spacing-4);
    }
    
    .empty-state .material-icons-outlined {
        font-size: 48px;
    }
    
    .empty-state h3 {
        font-size: var(--font-size-xl);
    }
    
    .empty-state p {
        font-size: var(--font-size-base);
    }
    
    /* ===== 设置模态框优化 ===== */
    .setting-item {
        flex-wrap: wrap;
        gap: var(--spacing-2);
    }
    
    .setting-info {
        min-width: 0;
    }
}

/* 超小屏手机 */
@media (max-width: 480px) {
    /* ===== 登录/注册 ===== */
    .login-container,
    .register-container {
        padding: var(--spacing-6);
        border-radius: var(--radius-xl);
    }
    
    #login-page,
    #register-page {
        padding: var(--spacing-3);
    }
    
    .logo {
        width: 64px;
        height: 64px;
    }
    
    .logo .material-icons-outlined {
        font-size: 32px;
    }
    
    .login-header h1 {
        font-size: var(--font-size-2xl);
    }
    
    .login-header .subtitle {
        font-size: var(--font-size-base);
    }
    
    .form-options {
        flex-direction: column;
        gap: var(--spacing-3);
        align-items: flex-start;
    }
    
    .login-btn,
    .register-btn {
        font-size: var(--font-size-base);
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    /* ===== 网站卡片 - 超小屏4列更紧凑 ===== */
    .websites-grid {
        gap: 10px 4px;
    }

    .website-icon {
        width: 42px;
        height: 42px;
        font-size: 20px;
        border-radius: 50%;
        margin-bottom: 3px;
    }

    .website-name {
        font-size: 9px;
        -webkit-line-clamp: 1;
    }

    .website-action-btn {
        width: 18px;
        height: 18px;
    }

    .website-action-btn .material-icons-outlined {
        font-size: 10px;
    }

    /* 文件夹网格 */
    .folder-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
        padding: var(--spacing-3);
    }
    
    /* ===== 顶栏精简 ===== */
    .header-btn,
    .menu-toggle,
    .user-avatar {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }
    
    .header-btn.sync-btn,
    .header-btn#add-website-btn {
        width: 36px;
        height: 36px;
    }
    
    /* ===== 模态框 ===== */
    .modal-header h3 {
        font-size: var(--font-size-lg);
    }
    
    /* ===== 用户下拉菜单 ===== */
    .user-dropdown {
        bottom: 72px;
        right: var(--spacing-2);
        left: var(--spacing-2);
        z-index: var(--z-popover);
        max-height: calc(100vh - 140px);
    }
    
    /* ===== 排序菜单 ===== */
    .sort-menu {
        bottom: 72px;
        left: var(--spacing-2);
        right: var(--spacing-2);
    }
    
}

/* 暗色主题特殊样式 */
.theme-dark .website-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.02) 100%);
}

.theme-dark .website-card:hover {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, rgba(255, 255, 255, 0.06) 100%);
}

.theme-dark .input-wrapper {
    background: rgba(255, 255, 255, 0.08);
}

.theme-dark .input-wrapper:focus-within {
    background: rgba(255, 255, 255, 0.12);
}

.theme-dark .header-btn,
.theme-dark .menu-toggle,
.theme-dark .sort-btn,
.theme-dark .filter-btn,
.theme-dark .add-folder-btn,
.theme-dark .back-btn,
.theme-dark .modal-close,
.theme-dark .website-action-btn {
    background: rgba(255, 255, 255, 0.08);
}

.theme-dark .header-btn:hover,
.theme-dark .menu-toggle:hover,
.theme-dark .sort-btn:hover,
.theme-dark .filter-btn:hover,
.theme-dark .add-folder-btn:hover,
.theme-dark .back-btn:hover,
.theme-dark .modal-close:hover,
.theme-dark .website-action-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* 浅色主题特殊样式 */
.theme-light .website-card {
    background: white;
    box-shadow: var(--shadow-sm);
}

.theme-light .website-card:hover {
    box-shadow: var(--shadow-md);
}

.theme-light .input-wrapper {
    background: var(--color-gray-100);
}

.theme-light .input-wrapper:focus-within {
    background: white;
}

.theme-light .header-btn,
.theme-light .menu-toggle,
.theme-light .sort-btn,
.theme-light .filter-btn,
.theme-light .add-folder-btn,
.theme-light .back-btn,
.theme-light .modal-close,
.theme-light .website-action-btn {
    background: var(--color-gray-100);
}

.theme-light .header-btn:hover,
.theme-light .menu-toggle:hover,
.theme-light .sort-btn:hover,
.theme-light .filter-btn:hover,
.theme-light .add-folder-btn:hover,
.theme-light .back-btn:hover,
.theme-light .modal-close:hover,
.theme-light .website-action-btn:hover {
    background: var(--color-gray-200);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}

.theme-dark ::-webkit-scrollbar-thumb {
    background: var(--color-gray-600);
}

.theme-dark ::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-500);
}

/* 选择文本样式 */
::selection {
    background: var(--color-primary);
    color: white;
}

/* 焦点样式 */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* 禁用状态 */
.disabled {
    opacity: 0.5;
    pointer-events: none;
    cursor: not-allowed;
}

/* 加载状态 */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    border-radius: inherit;
    z-index: 10;
}

.theme-dark .loading::after {
    background: rgba(0, 0, 0, 0.7);
}

/* 工具类 */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ==============================
   创意视觉效果
   ============================== */

/* 噪点纹理背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    z-index: 0;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 200px 200px;
}

.theme-dark body::before {
    opacity: 0.05;
}

/* 几何装饰图案 */
.login-background::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: 
        radial-gradient(circle at 20% 30%, rgba(13, 148, 136, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(20, 184, 166, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(13, 148, 136, 0.05) 0%, transparent 70%);
    z-index: 0;
    pointer-events: none;
}

/* 卡片玻璃态增强 */
.website-card {
    position: relative;
    overflow: hidden;
}

.website-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0.02) 100%
    );
    pointer-events: none;
    border-radius: inherit;
}

.theme-dark .website-card::after {
    background: linear-gradient(
        135deg,
        rgba(13, 148, 136, 0.1) 0%,
        rgba(13, 148, 136, 0.05) 50%,
        rgba(13, 148, 136, 0.02) 100%
    );
}

/* 按钮光泽效果 */
.login-btn,
.register-btn,
.btn-primary,
.add-first-btn {
    position: relative;
    overflow: hidden;
}

.login-btn::before,
.register-btn::before,
.btn-primary::before,
.add-first-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s ease;
}

.login-btn:hover::before,
.register-btn:hover::before,
.btn-primary:hover::before,
.add-first-btn:hover::before {
    left: 100%;
}

/* 输入框焦点动画 */
.input-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.input-wrapper:focus-within::after {
    width: 100%;
}

/* 文件夹项悬停效果 */
.folder-item {
    position: relative;
    overflow: hidden;
}

.folder-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-primary);
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: center;
}

.folder-item:hover::before,
.folder-item.active::before {
    transform: scaleY(1);
}

/* 侧边栏底部装饰 */
.sidebar-footer {
    position: relative;
}

.sidebar-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.5;
}

/* 搜索框特殊效果 */
.search-container {
    position: relative;
    overflow: hidden;
}

.search-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(13, 148, 136, 0.05), transparent);
    pointer-events: none;
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.search-container:focus-within::after {
    transform: translateX(100%);
}

/* 移动端导航特殊效果 */
.mobile-nav-item {
    position: relative;
}

.mobile-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #0d9488, #0891b2);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.mobile-nav-item.active::before {
    width: 50%;
}

/* 移动端卡片入场动画 - 赛博脉冲效果 */
@keyframes mobileCardPulse {
    0% { opacity: 0; transform: scale(0.85); }
    60% { opacity: 1; transform: scale(1.03); }
    100% { opacity: 1; transform: scale(1); }
}

@media (max-width: 768px) {
    .website-card.animate-fade-in {
        animation: mobileCardPulse 0.35s ease-out both;
    }
}

/* 模态框增强效果 */
.modal-container {
    position: relative;
    overflow-y: auto;
}

.modal-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0.8;
}

/* 通知增强效果 */
.notification {
    position: relative;
    overflow: hidden;
}

.notification::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.notification:hover::after {
    opacity: 1;
}

/* 响应式几何装饰 */
@media (max-width: 768px) {
    .login-background::before {
        width: 300px;
        height: 300px;
    }

    /* 移动端卡片不需要复杂装饰 */
    .website-card::after {
        display: none !important;
    }
}

/* 移动端搜索按钮 - 默认隐藏，仅移动端显示 */
.mobile-search-btn {
    display: none;
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    body::before,
    .login-background::before,
    .website-card::after,
    .login-btn::before,
    .register-btn::before,
    .btn-primary::before,
    .add-first-btn::before,
    .input-wrapper::after,
    .folder-item::before,
    .sidebar-footer::before,
    .search-container::after,
    .mobile-nav-item::before,
    .modal-container::before,
    .notification::after {
        animation: none !important;
        transition: none !important;
    }
}