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

:root {
    --primary-color: #3b82f6;
    --primary-color-dark: #1d4ed8;
    --primary-color-light: #2563eb;
    --primary-color-lighter: #60a5fa;
    --success-color: #52c41a;
    --warning-color: #faad14;
    --danger-color: #f5222d;
    --info-color: #3b82f6;
    --text-color: #333;
    --text-secondary: #666;
    --border-color: #e0e0e0;
    --bg-color: #f5f5f5;
    --white: #fff;
    --gray-100: #f5f5f5;
    --gray-200: #e0e0e0;
    --gray-300: #d0d0d0;
    --gray-400: #b0b0b0;
    --gray-500: #999;
    --gray-600: #666;
    --gray-700: #444;
    --gray-800: #333;
    --gray-900: #222;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #357abd;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
}

.logo a {
    color: var(--primary-color);
}

.main-nav .nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.main-nav .nav-menu a {
    color: var(--text-color);
    font-weight: 500;
}

.main-nav .nav-menu a:hover {
    color: var(--primary-color);
}

.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    min-width: 150px;
    display: none;
    list-style: none;
    padding: 10px 0;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 8px 15px;
    color: var(--text-color);
}

.dropdown-menu a:hover {
    background: var(--gray-100);
}

.main-wrapper {
    min-height: calc(100vh - 200px);
}

.main-content {
    padding: 30px 0;
}

.site-footer {
    background: var(--gray-800);
    color: var(--white);
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 15px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--gray-400);
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--white);
    border-radius: 8px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.login-header p {
    color: var(--text-secondary);
}

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

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

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

.form-group .required {
    color: var(--danger-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-text {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: var(--text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-section {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--gray-100);
    border-radius: 8px;
}

.form-section h3 {
    margin-bottom: 10px;
    color: var(--text-color);
}

.form-section-desc {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    gap: 5px;
}

.btn:hover {
    opacity: 0.9;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color-dark) 100%);
    background-size: 200% 200%;
    color: var(--white);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
    background-position: right center;
}

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

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

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

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

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-color);
}

.btn-outline:hover {
    background: var(--gray-100);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-close {
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
}

.alert {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-success {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: #52c41a;
}

.alert-danger {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #f5222d;
}

.alert-warning {
    background: #fffbe6;
    border: 1px solid #ffe58f;
    color: #faad14;
}

.alert-info {
    background: #e6f7ff;
    border: 1px solid #91d5ff;
    color: #1890ff;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

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

.badge-success {
    background: var(--success-color);
    color: var(--white);
}

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

.badge-warning {
    background: var(--warning-color);
    color: var(--white);
}

.badge-info {
    background: var(--info-color);
    color: var(--white);
}

.badge-secondary {
    background: var(--gray-500);
    color: var(--white);
}

/* 新后台布局 */
.admin-top-nav {
    background: linear-gradient(90deg, #1e5fcc 0%, #3478d8 100%);
    height: 56px;
    display: flex;
    align-items: center;
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.admin-nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 18px;
    font-weight: 700;
    padding-right: 30px;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.admin-nav-logo svg {
    width: 28px;
    height: 28px;
}

.admin-nav-menu {
    display: flex;
    gap: 5px;
    margin-left: 20px;
    flex: 1;
}

.admin-nav-link {
    color: rgba(255, 255, 255, 0.9);
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.admin-nav-link:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.admin-nav-link.active {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.admin-nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: auto;
}

.admin-user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 15px;
}

.admin-user-name {
    color: white;
    font-size: 14px;
}

.admin-nav-icons {
    display: flex;
    gap: 10px;
    margin-left: 15px;
}

.admin-nav-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.2s;
}

.admin-nav-icon:hover {
    background: rgba(255, 255, 255, 0.15);
}

.dashboard-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: calc(100vh - 56px);
}

.sidebar {
    background: #ffffff;
    border-right: 1px solid #e5e7eb;
    padding: 15px 12px;
    position: sticky;
    top: 56px;
    height: calc(100vh - 56px);
    overflow-y: auto;
}

.sidebar-header {
    display: none;
}

.sidebar-menu-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    margin-bottom: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.sidebar-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: #f9fafb;
    border-bottom: 1px solid #e5e7eb;
    cursor: pointer;
    font-weight: 600;
    color: #4b5563;
    font-size: 14px;
}

.sidebar-menu-header:hover {
    background: #f3f4f6;
}

.sidebar-menu-body {
    padding: 8px 0;
}

.sidebar-menu-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
}

.sidebar-menu-item {
    padding: 8px 10px;
    font-size: 13px;
    color: #374151;
    text-decoration: none;
    transition: all 0.15s;
}

.sidebar-menu-item:hover {
    background: #f3f4f6;
    color: #1e5fcc;
}

.sidebar-menu-item.active {
    background: #eef5ff;
    color: #1e5fcc;
    font-weight: 600;
    border-left: 3px solid #1e5fcc;
}

.sidebar-badge {
    margin-left: auto;
    background: #f97316;
    color: #fff;
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 10px;
    font-weight: 500;
}

.dashboard-content {
    padding: 20px 24px;
    background: #f5f7fa;
    min-height: calc(100vh - 56px);
}

.page-header {
    margin-bottom: 18px;
}

.page-header h1 {
    font-size: 24px;
    color: #374151;
    font-weight: 700;
    margin: 0;
}

.page-filter-bar {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    padding: 15px 18px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.page-filter-select,
.page-filter-input {
    padding: 8px 12px;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    font-size: 13px;
    color: #374151;
    background: white;
    min-width: 140px;
}

.page-filter-input {
    min-width: 300px;
}

.page-filter-btn {
    padding: 8px 16px;
    background: linear-gradient(90deg, #1e5fcc, #3478d8);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}

.page-info-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 13px;
    color: #6b7280;
}

.page-sort-link {
    color: #1e5fcc;
    text-decoration: none;
}

.page-sort-link:hover {
    text-decoration: underline;
}

.page-table-container {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    overflow: hidden;
}

.page-table {
    width: 100%;
    border-collapse: collapse;
}

.page-table thead {
    background: linear-gradient(90deg, #e8f4fd, #dbeefb);
}

.page-table th {
    padding: 12px 14px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: #374151;
    border-bottom: 2px solid #93c5fd;
}

.page-table td {
    padding: 12px 14px;
    border-bottom: 1px solid #e5e7eb;
    font-size: 13px;
    color: #374151;
}

.page-table tbody tr:hover {
    background: #f9fafb;
}

.page-table-link {
    color: #1e5fcc;
    text-decoration: none;
}

.page-table-link:hover {
    text-decoration: underline;
}

.back-link {
    color: var(--text-secondary);
}

.back-link:hover {
    color: var(--primary-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stats-grid-sm {
    grid-template-columns: repeat(4, 1fr);
}

.stat-card {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon-blue {
    background: #e6f7ff;
    color: var(--primary-color);
}

.stat-icon-green {
    background: #f6ffed;
    color: var(--success-color);
}

.stat-icon-yellow {
    background: #fffbe6;
    color: var(--warning-color);
}

.stat-icon-blue {
    background: #eff6ff;
    color: var(--primary-color);
}

.stat-icon-purple {
    background: #f3e7ff;
    color: var(--primary-color-dark);
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.stat-number {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-color);
}

.dashboard-sections {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.dashboard-section {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
    font-size: 18px;
    color: var(--text-color);
}

.view-all {
    color: var(--primary-color);
    font-size: 14px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.projects-list,
.completions-list,
.announcements-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.project-item,
.completion-item,
.announcement-item {
    background: var(--gray-100);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-info,
.completion-info,
.announcement-info {
    flex: 1;
}

.project-info h3,
.completion-info h3,
.announcement-info h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.project-meta,
.completion-meta,
.announcement-meta {
    display: flex;
    gap: 15px;
    align-items: center;
    font-size: 12px;
    color: var(--text-secondary);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.project-actions,
.completion-actions {
    display: flex;
    gap: 10px;
}

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

.project-card,
.completion-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.project-card:hover,
.completion-card:hover {
    transform: translateY(-5px);
}

.project-card-header,
.completion-card-header {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-card-header h3,
.completion-card-header h3 {
    font-size: 16px;
    margin-bottom: 0;
}

.project-card-body,
.completion-card-body {
    padding: 15px;
}

.project-description,
.completion-summary {
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.project-card-footer,
.completion-card-footer {
    padding: 15px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
}

.filter-bar {
    background: var(--white);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-group label {
    font-weight: 500;
}

.filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.table-container {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--gray-100);
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-weight: 600;
    color: var(--text-color);
}

.data-table tbody tr:hover {
    background: var(--gray-100);
}

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

.text-muted {
    color: var(--text-secondary);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.pagination-link {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-color);
}

.pagination-link:hover {
    background: var(--gray-100);
}

.pagination-current {
    padding: 8px 12px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 4px;
}

.profile-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.profile-card {
    background: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--text-secondary);
}

.profile-info h2 {
    font-size: 24px;
    margin-bottom: 5px;
}

.profile-role {
    color: var(--text-secondary);
}

.account-info {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.account-info h3 {
    margin-bottom: 20px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item label {
    font-weight: 500;
    color: var(--text-secondary);
}

.project-detail,
.completion-detail {
    background: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.detail-header h2 {
    font-size: 24px;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

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

.detail-section h3 {
    font-size: 18px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.detail-content {
    background: var(--gray-100);
    padding: 20px;
    border-radius: 8px;
    line-height: 1.8;
}

.detail-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.files-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.file-item {
    background: var(--gray-100);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.file-actions {
    display: flex;
    gap: 10px;
}

.upload-form {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
}

.review-form {
    background: var(--gray-100);
    padding: 20px;
    border-radius: 8px;
}

.review-result {
    background: var(--gray-100);
    padding: 20px;
    border-radius: 8px;
}

.review-score {
    margin-bottom: 15px;
}

.review-score label {
    font-weight: 500;
    margin-right: 10px;
}

.score-value {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.review-comment {
    margin-bottom: 15px;
}

.review-comment label {
    font-weight: 500;
    display: block;
    margin-bottom: 10px;
}

.review-time {
    color: var(--text-secondary);
}

.review-time label {
    font-weight: 500;
    margin-right: 10px;
}

.form-container {
    background: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.form-header h2 {
    font-size: 20px;
}

.welcome-section {
    text-align: center;
    padding: 40px 0;
}

.welcome-section h1 {
    font-size: 36px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.welcome-section p {
    font-size: 18px;
    color: var(--text-secondary);
}

.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.main-column,
.side-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.announcements-section,
.user-info-section,
.login-prompt-section,
.system-info-section {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.announcement-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.announcement-header h3 {
    font-size: 16px;
    margin-bottom: 0;
}

.announcement-date {
    font-size: 12px;
    color: var(--text-secondary);
}

.announcement-summary {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.announcement-publisher {
    font-size: 12px;
    color: var(--text-secondary);
}

.user-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--gray-100);
    border-radius: 8px;
    margin-bottom: 20px;
}

.user-avatar {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
}

.user-details h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.user-role {
    color: var(--text-secondary);
}

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

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.announcements-container {
    background: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.announcement-detail {
    background: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.announcement-detail-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.announcement-detail-header h1 {
    font-size: 28px;
    margin-bottom: 15px;
}

.announcement-detail-meta {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.announcement-detail-content {
    line-height: 1.8;
    font-size: 16px;
}

.announcement-attachments {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

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

.attachment-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.attachment-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 15px;
    background: var(--gray-100);
    border-radius: 6px;
    transition: all 0.3s;
}

.attachment-list li:hover {
    background: var(--gray-200);
}

.attachment-item {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    text-decoration: none;
    color: var(--text-color);
}

.attachment-item:hover {
    color: var(--primary-color);
}

.attachment-name {
    font-weight: 500;
    flex: 1;
}

.attachment-size {
    color: var(--text-secondary);
    font-size: 13px;
}

.todo-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* 立项评审详情页样式 */
.proposal-content {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

.proposal-sidebar {
    width: 300px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.proposal-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.section {
    background: var(--white);
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.section h3 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.section h4 {
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--text-secondary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.user-avatar img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

.user-details {
    flex: 1;
}

.user-name {
    margin-bottom: 8px;
    font-size: 16px;
}

.user-status {
    font-size: 14px;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.activity-item {
    display: flex;
    gap: 10px;
    padding: 12px;
    background-color: var(--gray-100);
    border-radius: 6px;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-title {
    margin-bottom: 4px;
    font-size: 14px;
    line-height: 1.4;
}

.activity-time {
    font-size: 12px;
    color: var(--text-secondary);
}

.info-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-item {
    display: flex;
    gap: 15px;
}

.info-label {
    width: 100px;
    font-weight: 500;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.info-value {
    flex: 1;
    color: var(--text-color);
}

.content-box {
    padding: 20px;
    background-color: var(--gray-100);
    border-radius: 6px;
    line-height: 1.6;
}

.attachment-category {
    margin-bottom: 30px;
}

.attachment-category h4 {
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--text-color);
}

.files-list {
    margin-top: 15px;
}

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

.form-section h4 {
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--text-color);
}

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

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

.form-group input[type="number"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.required {
    color: var(--danger-color);
}

/* 进度条样式 */
.progress-bar-container {
    background-color: var(--gray-100);
    padding: 30px;
    margin-bottom: 30px;
    border-radius: 8px;
}

.progress-bar-header {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.progress-steps::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 4px;
    background-color: var(--gray-300);
    z-index: 1;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
    width: 22%;
}

.step.active {
    color: var(--success-color);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--gray-300);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    margin-bottom: 10px;
    transition: all 0.3s;
}

.step.active .step-number {
    background-color: var(--success-color);
    color: var(--white);
}

.step-title {
    font-size: 14px;
    margin-bottom: 5px;
    text-align: center;
}

.step-date {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .proposal-content {
        flex-direction: column;
    }
    
    .proposal-sidebar {
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .proposal-sidebar > .section {
        flex: 1;
        min-width: 250px;
    }
}

@media (max-width: 768px) {
    .dashboard-content {
        padding: 20px;
    }
    
    .proposal-sidebar {
        flex-direction: column;
    }
    
    .progress-steps {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .step {
        flex-direction: row;
        width: 100%;
        gap: 15px;
        align-items: center;
    }
    
    .progress-steps::before {
        display: none;
    }
}

.todo-item {
    background: var(--gray-100);
    border-radius: 8px;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.todo-info h4 {
    font-size: 14px;
    margin-bottom: 5px;
}

.todo-info p {
    font-size: 12px;
    color: var(--text-secondary);
}

.todo-actions {
    display: flex;
    gap: 10px;
}

@media (max-width: 768px) {
    .dashboard-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid-sm {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
    
    .projects-grid,
    .completions-grid {
        grid-template-columns: 1fr;
    }
    
    .profile-container {
        grid-template-columns: 1fr;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .main-nav .nav-menu {
        flex-wrap: wrap;
        gap: 15px;
    }
}

/* 弹窗样式 */
.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: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal {
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.modal-lg {
    max-width: 90%;
    max-height: 90vh;
}

.modal-lg .modal-body {
    padding: 0;
}

.preview-content {
    width: 100%;
    min-height: 600px;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 18px;
    color: #333;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #666;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: #333;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid #e0e0e0;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.form-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    overflow: hidden;
}

.form-container .form-header {
    padding: 20px;
    border-bottom: 1px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8f9fa;
}

.form-container .form-header h2 {
    margin: 0;
    font-size: 18px;
    color: #333;
}

.form-container .form-header .btn-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #666;
}

.form-container form {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

/* 复选框和单选框样式 */
.form-check {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

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

.form-check label {
    display: inline-block;
    margin: 0;
    font-weight: normal;
    cursor: pointer;
}

/* 评审结果样式 */
.review-results {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.review-item {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #4CAF50;
}

.review-item h4 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #333;
}

.review-score {
    margin-bottom: 15px;
}

.review-score label {
    font-weight: 500;
    color: #666;
    margin-right: 10px;
}

.score-value {
    font-size: 24px;
    font-weight: bold;
    color: #4CAF50;
}

.review-comment {
    margin-bottom: 15px;
}

.review-comment label {
    display: block;
    font-weight: 500;
    color: #666;
    margin-bottom: 10px;
}

.review-time {
    font-size: 14px;
    color: #999;
}

.review-time label {
    font-weight: 500;
    margin-right: 10px;
}