/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: all 0.3s ease;
}

/* CSS 变量 */
:root {
    --primary-color: #007acc;
    --secondary-color: #f0f0f0;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    
    --bg-color: #ffffff;
    --surface-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.15);
    
    --header-height: 60px;
    --sidebar-width: 280px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* 顶部导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 18px;
    color: var(--text-color);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: var(--secondary-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}

.logo i {
    font-size: 24px;
}

.logo h1 {
    font-size: 20px;
    font-weight: 600;
}

.header-center {
    flex: 1;
    max-width: 500px;
    margin: 0 20px;
}

.search-container {
    position: relative;
    width: 100%;
}

.search-input {
    width: 100%;
    padding: 10px 40px 10px 40px;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 14px;
    background: var(--surface-color);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 204, 0.1);
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.search-clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition);
}

.search-clear.show {
    opacity: 1;
}

.search-clear:hover {
    background: var(--secondary-color);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 16px;
    color: var(--text-color);
    cursor: pointer;
    padding: 10px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--secondary-color);
}

.add-tool-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.add-tool-btn:hover {
    background: #0056b3;
    transform: translateY(-1px);
}

/* 主容器 */
.main-container {
    display: flex;
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

/* 侧边栏 */
.sidebar {
    width: var(--sidebar-width);
    background: var(--card-bg);
    border-right: 1px solid var(--border-color);
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar.collapsed {
    width: 0;
    overflow: hidden;
}

.sidebar-content {
    padding: 20px;
}

.sidebar-section {
    margin-bottom: 30px;
}

.sidebar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-list,
.quick-access,
.settings-list {
    list-style: none;
}

.category-item,
.quick-item,
.setting-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 4px;
    color: var(--text-color);
}

.category-item:hover,
.quick-item:hover,
.setting-item:hover {
    background: var(--surface-color);
}

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

.category-item i,
.quick-item i,
.setting-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

.count {
    margin-left: auto;
    background: var(--surface-color);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

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

/* 主内容区 */
.main-content {
    flex: 1;
    padding: 20px;
    background: var(--surface-color);
    transition: var(--transition);
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.content-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
}

.tool-count {
    color: var(--text-muted);
    font-size: 14px;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.view-options {
    display: flex;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 4px;
}

.view-btn {
    background: none;
    border: none;
    padding: 8px 12px;
    border-radius: calc(var(--border-radius) - 2px);
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.view-btn.active,
.view-btn:hover {
    background: var(--card-bg);
    color: var(--text-color);
}

.sort-select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 14px;
    cursor: pointer;
}

/* 工具容器 */
.tools-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.tools-grid.list-view {
    grid-template-columns: 1fr;
}

/* 工具卡片 */
.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.tool-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.tool-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    flex-shrink: 0;
}

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

.tool-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tool-category {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--surface-color);
    padding: 2px 8px;
    border-radius: 12px;
    display: inline-block;
}

.tool-description {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 15px;
}

.tool-tag {
    font-size: 11px;
    color: var(--primary-color);
    background: rgba(0, 122, 204, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(0, 122, 204, 0.2);
}

.tool-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.tool-btn {
    background: none;
    border: none;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 14px;
    transition: var(--transition);
}

.tool-btn:hover {
    background: var(--surface-color);
    color: var(--text-color);
}

.tool-btn.favorite.active {
    color: var(--danger-color);
}

.tool-btn.edit:hover {
    color: var(--info-color);
}

.tool-btn.delete:hover {
    color: var(--danger-color);
}

.tool-url {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

.tool-url:hover {
    text-decoration: underline;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: scale(1);
}

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

.modal-header {
    padding: 20px 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--surface-color);
    color: var(--text-color);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 0 20px 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    background: var(--card-bg);
    color: var(--text-color);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: #0056b3;
}

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

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

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

.btn-danger:hover {
    background: #c82333;
}

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

::-webkit-scrollbar-track {
    background: var(--surface-color);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

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

.tool-card {
    animation: fadeIn 0.3s ease;
}

/* 工具提示 */
[title] {
    position: relative;
}

/* 加载状态 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-muted);
}

.loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 登录状态指示器 */
.login-status-indicator {
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    box-shadow: var(--shadow);
    margin-left: 10px;
}

.login-status-indicator.admin-mode {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
}

.login-status-indicator.admin-mode:hover {
    background: linear-gradient(135deg, #218838, #1ea085);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
    cursor: pointer;
}

.login-status-indicator.guest-mode {
    background: linear-gradient(135deg, #6c757d, #adb5bd);
    color: white;
}

.login-status-indicator i {
    font-size: 16px;
}

/* 认证模态框样式 */
.auth-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.auth-modal.show {
    display: flex;
}

.auth-modal-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 90%;
    text-align: center;
    animation: modalSlideIn 0.3s ease;
}

.auth-modal h2 {
    margin-bottom: 20px;
    color: var(--text-color);
    font-size: 24px;
}

.auth-modal p {
    margin-bottom: 30px;
    color: var(--text-muted);
    line-height: 1.6;
}

.auth-error {
    color: var(--danger-color);
    font-size: 14px;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(220, 53, 69, 0.1);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--danger-color);
    text-align: left;
}

/* 游客模式下强制隐藏管理按钮 */
body:not(.admin-mode) .tool-btn.edit,
body:not(.admin-mode) .tool-btn.delete {
    display: none !important;
    visibility: hidden !important;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.auth-form input {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background: var(--surface-color);
}

.auth-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 204, 0.1);
}

.auth-form .btn-group {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.auth-form .btn {
    flex: 1;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.auth-form .btn-primary:hover {
    background: #0056b3;
    transform: translateY(-1px);
}

.auth-form .btn-secondary {
    background: var(--border-color);
    color: var(--text-color);
}

.auth-form .btn-secondary:hover {
    background: #c6c8ca;
}

/* 模态框遮罩层 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1500;
    animation: fadeIn 0.3s ease;
}

/* 管理员面板样式 */
.admin-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    padding: 20px;
    min-width: 300px;
    max-width: 400px;
    animation: slideInDown 0.3s ease;
}

.admin-panel.show {
    display: block;
    animation: fadeInDown 0.3s ease;
}

.admin-panel h3 {
    margin-bottom: 15px;
    color: var(--text-color);
    font-size: 18px;
}

.admin-panel .admin-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.admin-panel .admin-btn {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--surface-color);
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    cursor: pointer;
}

.admin-panel .admin-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.admin-panel .admin-btn i {
    font-size: 14px;
}

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

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

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

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}