* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #1a1a1a;
    color: #ffffff;
    overflow-x: hidden;
}

/* 侧边栏样式 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 240px;
    height: 100vh;
    background: #2a2a2a;
    border-right: 1px solid #3a3a3a;
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.logo {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: bold;
    border-bottom: 1px solid #3a3a3a;
}

.logo i {
    color: #8b5cf6;
    font-size: 20px;
}

.nav-menu {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

/* 快速操作区 */
.quick-actions {
    padding: 0 15px 20px;
    border-bottom: 1px solid #3a3a3a;
    margin-bottom: 20px;
}

.quick-btn {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 8px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 500;
}

.create-btn {
    background: #8b5cf6;
    color: white;
}

.create-btn:hover {
    background: #7c3aed;
}

.import-btn {
    background: #374151;
    color: #d1d5db;
    border: 1px solid #4b5563;
}

.import-btn:hover {
    background: #4b5563;
    color: white;
}

.nav-section {
    margin-bottom: 25px;
}

.nav-title {
    padding: 8px 20px;
    font-size: 12px;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.nav-title:hover {
    color: #ccc;
}

.nav-title.expandable {
    cursor: pointer;
}

.expand-icon {
    font-size: 10px;
    transition: transform 0.2s;
}

.nav-title.collapsed .expand-icon {
    transform: rotate(-90deg);
}

.nav-subsection {
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.nav-subsection.collapsed {
    max-height: 0;
}

.nav-item {
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.2s;
    color: #ccc;
    position: relative;
}

.nav-item:hover {
    background: #3a3a3a;
    color: #fff;
}

.nav-item.active {
    background: #8b5cf6;
    color: #fff;
}

.nav-item i {
    width: 16px;
    text-align: center;
    font-size: 14px;
}

/* 移除了三级结构相关的样式 */

.user-info {
    padding: 20px;
    border-top: 1px solid #3a3a3a;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: #8b5cf6;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 主内容区样式 */
.main-content {
    margin-left: 240px;
    min-height: 100vh;
    background: #1a1a1a;
}

.top-nav {
    padding: 20px 30px;
    border-bottom: 1px solid #3a3a3a;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #2a2a2a;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #888;
}

.breadcrumb span:last-child {
    color: #fff;
}

.top-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: #ccc;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: #3a3a3a;
    color: #fff;
}

.btn-primary {
    padding: 10px 20px;
    background: #8b5cf6;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    background: #7c3aed;
}

.btn-secondary {
    padding: 10px 20px;
    background: transparent;
    color: #ccc;
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: #3a3a3a;
    color: #fff;
}

/* 内容区域 */
.content-area {
    padding: 30px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.content-header h1 {
    font-size: 24px;
    font-weight: 600;
}

.view-controls {
    display: flex;
    gap: 10px;
}

.view-btn {
    width: 40px;
    height: 40px;
    border: 1px solid #3a3a3a;
    background: transparent;
    color: #ccc;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.view-btn:hover {
    background: #3a3a3a;
    color: #fff;
}

.view-btn.active {
    background: #8b5cf6;
    border-color: #8b5cf6;
    color: #fff;
}

/* 项目网格 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.project-card {
    background: #2a2a2a;
    border: 1px solid #3a3a3a;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: #8b5cf6;
    transform: translateY(-2px);
}

/* 项目头部 - 名称和菜单 */
.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid #3a3a3a;
    background: #2a2a2a;
}

.project-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    line-height: 1.4;
    flex: 1;
    margin-right: 8px;
    margin-bottom: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.project-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.favorite-icon {
    color: #ffd700;
    font-size: 14px;
}

.menu-item .fa-star.favorited {
    color: #ffd700;
}

.project-menu {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    color: #888;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.project-menu:hover {
    background: #3a3a3a;
    color: #fff;
}

.project-menu i {
    font-size: 14px;
}

/* 项目图片 */
.project-image {
    width: 100%;
    height: 160px;
    background: #3a3a3a;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #666;
    flex: 1;
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-type-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(139, 92, 246, 0.9);
    color: #fff;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    backdrop-filter: blur(4px);
}

/* 项目底部 - 时间 */
.project-footer {
    padding: 12px 16px;
    border-top: 1px solid #3a3a3a;
    background: #2a2a2a;
}

.project-date {
    font-size: 12px;
    color: #888;
    text-align: center;
    margin: 0;
}

/* 项目右键菜单 */
.project-context-menu {
    position: fixed;
    background: #2a2a2a;
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    min-width: 180px;
    padding: 8px 0;
    z-index: 2000;
}

.menu-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    color: #fff;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 14px;
}

.menu-item:hover {
    background: #3a3a3a;
}

.menu-item.danger {
    color: #ff6b6b;
}

.menu-item.danger:hover {
    background: rgba(255, 107, 107, 0.1);
}

.menu-item i {
    width: 16px;
    margin-right: 12px;
    font-size: 14px;
}

.menu-divider {
    height: 1px;
    background: #3a3a3a;
    margin: 8px 0;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: #2a2a2a;
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid #3a3a3a;
}

.modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid #3a3a3a;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: #ccc;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: #3a3a3a;
    color: #fff;
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid #3a3a3a;
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

/* 搜索和过滤区域 */
.search-filter-area {
    background: #2a2a2a;
    border: 1px solid #3a3a3a;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    gap: 20px;
    align-items: center;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-box input {
    width: 100%;
    padding: 12px 40px 12px 15px;
    background: #3a3a3a;
    border: 1px solid #4a4a4a;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
}

.search-box i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #888;
}

.filter-options {
    display: flex;
    gap: 15px;
}

.filter-options select {
    padding: 12px 15px;
    background: #3a3a3a;
    border: 1px solid #4a4a4a;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
}

.filter-options select:focus {
    outline: none;
    border-color: #8b5cf6;
}

/* 创建项目模态框样式 */
.create-project-modal {
    max-width: 1000px;
    width: 95%;
}

.create-project-body {
    display: flex;
    gap: 0;
    padding: 0;
    height: 500px;
}

.templates-section {
    flex: 2;
    padding: 30px;
    border-right: 1px solid #3a3a3a;
    overflow-y: auto;
}

.templates-section h3 {
    margin-bottom: 20px;
    color: #fff;
    font-size: 16px;
}

.project-info-section {
    flex: 1;
    padding: 25px;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: #252525;
}

.project-info {
    flex: 1;
}

.project-actions {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #3a3a3a;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.project-actions .btn-primary,
.project-actions .btn-secondary {
    width: 100%;
    padding: 12px;
    font-size: 14px;
}

/* 项目模板样式 */
.project-templates {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.template-item {
    padding: 16px;
    background: #3a3a3a;
    border: 2px solid transparent;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.template-item:hover {
    border-color: #8b5cf6;
    background: #4a4a4a;
}

.template-item.selected {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.1);
}

.template-icon {
    width: 48px;
    height: 48px;
    background: #8b5cf6;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 20px;
    color: white;
}

.template-name {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    line-height: 1.3;
}

.template-description {
    background: #3a3a3a;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.template-description p {
    color: #ccc;
    line-height: 1.5;
    margin: 0;
}

/* 表单样式增强 */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #fff;
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: #3a3a3a;
    border: 1px solid #4a4a4a;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    transition: all 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #8b5cf6;
    background: #4a4a4a;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #888;
}

.form-group textarea {
    resize: vertical;
    min-height: 70px;
}

.location-input-group {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.location-input-group input {
    flex: 1;
}

.location-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    padding: 8px 12px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 6px;
    font-size: 12px;
    color: #ccc;
}

.location-hint i {
    color: #8b5cf6;
    font-size: 12px;
}

.btn-browse {
    padding: 12px 16px;
    background: #8b5cf6;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 45px;
}

.btn-browse:hover {
    background: #7c3aed;
}

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



.form-group {
    position: relative;
}

/* 无项目显示 */
.no-projects {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #666;
}

.no-projects i {
    font-size: 48px;
    margin-bottom: 15px;
    display: block;
}

.no-projects p {
    font-size: 16px;
    margin: 0;
}

/* 模板描述样式 */
.template-description h4 {
    color: #8b5cf6;
    margin-bottom: 10px;
    font-size: 16px;
}

.template-description p {
    color: #ccc;
    line-height: 1.6;
    margin: 0;
}

/* 项目信息表单 */
.project-info h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #fff;
}

.project-info p {
    color: #ccc;
    margin-bottom: 20px;
    line-height: 1.5;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #fff;
}

.form-group input {
    width: 100%;
    padding: 12px;
    background: #3a3a3a;
    border: 1px solid #4a4a4a;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #8b5cf6;
    background: #4a4a4a;
}

.form-group input::placeholder {
    color: #888;
}

/* 导入区域样式 */
.import-area {
    text-align: center;
}

.upload-zone {
    border: 2px dashed #4a4a4a;
    border-radius: 12px;
    padding: 40px 20px;
    margin-bottom: 20px;
    transition: all 0.2s;
    cursor: pointer;
}

.upload-zone:hover {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.05);
}

.upload-zone.dragover {
    border-color: #8b5cf6;
    background: rgba(139, 92, 246, 0.1);
}

.upload-zone i {
    font-size: 48px;
    color: #666;
    margin-bottom: 15px;
    display: block;
}

.upload-zone p {
    color: #ccc;
    margin-bottom: 15px;
}

.btn-upload {
    padding: 10px 20px;
    background: #8b5cf6;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-upload:hover {
    background: #7c3aed;
}

.import-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.import-options label {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #ccc;
    cursor: pointer;
}

.import-options input[type="checkbox"] {
    width: auto;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-templates {
        grid-template-columns: repeat(2, 1fr);
    }

    .modal-content {
        width: 95%;
        margin: 20px;
    }
}