/* page1835.css */
:root {
  --primary-color: #2c7be5;
  --primary-light: #e6f0fd;
  --secondary-color: #6c757d;
  --success-color: #00d97e;
  --danger-color: #e63757;
  --warning-color: #f6c343;
  --light-color: #f9fafc;
  --dark-color: #12263f;
  --gray-color: #95aac9;
  --border-color: #e3ebf6;
  --border-radius: 8px;
  --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dark-color);
  background-color: #f5f7fa;
  line-height: 1.6;
}

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

/* 页面头部样式 */
.page-header {
  margin: 30px 0 40px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 10px;
}

.page-header .subtitle {
  font-size: 1.1rem;
  color: var(--secondary-color);
}

/* 操作栏样式 */
.actions-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 15px;
}

.search-box {
  display: flex;
  align-items: center;
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  flex-grow: 1;
  max-width: 400px;
}

.search-box input {
  flex-grow: 1;
  padding: 10px 15px;
  border: none;
  outline: none;
  font-size: 1rem;
}

.search-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  transition: var(--transition);
}

.search-btn:hover {
  background-color: #1a68d1;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  gap: 8px;
}

.btn i {
  font-size: 1.1rem;
}

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

.btn.primary:hover {
  background-color: #1a68d1;
}

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

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

/* 文档网格样式 */
.document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
  margin-bottom: 50px;
}

.document-card {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
}

.document-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.document-preview {
  height: 200px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #f8f9fa;
}

.document-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.document-info {
  padding: 20px;
}

.document-info h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.document-info .meta {
  font-size: 0.9rem;
  color: var(--secondary-color);
  margin-bottom: 8px;
}

.document-info .metadata-btn {
  width: 100%;
  margin-top: 15px;
}

/* 模态框样式 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.show {
  display: flex;
}

.modal-content {
  background-color: white;
  border-radius: var(--border-radius);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  animation: modalFadeIn 0.3s ease;
}

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

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

.modal-header h3 {
  font-size: 1.3rem;
  font-weight: 600;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--secondary-color);
  transition: var(--transition);
}

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

.modal-body {
  padding: 20px;
}

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

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

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

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.1);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 30px;
}

/* 元数据列表 */
.metadata-list {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.metadata-list h4 {
  font-size: 1.1rem;
  margin-bottom: 15px;
}

#existing-metadata {
  list-style: none;
}

#existing-metadata li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  background-color: var(--light-color);
  border-radius: var(--border-radius);
  margin-bottom: 10px;
}

#existing-metadata li .meta-value {
  font-family: monospace;
  color: var(--secondary-color);
}

#existing-metadata li .delete-meta {
  color: var(--danger-color);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1rem;
}

/* 上传区域样式 */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 20px;
}

.upload-area:hover {
  border-color: var(--primary-color);
}

.upload-area i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.upload-area p {
  margin-bottom: 15px;
}

#file-input {
  display: none;
}

.file-list {
  max-height: 200px;
  overflow-y: auto;
}

.file-list .file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  background-color: var(--light-color);
  border-radius: var(--border-radius);
  margin-bottom: 10px;
}

.file-list .file-item .file-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-grow: 1;
}

.file-list .file-item .file-size {
  color: var(--secondary-color);
  margin: 0 15px;
  font-size: 0.9rem;
}

.file-list .file-item .remove-file {
  color: var(--danger-color);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .document-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }
  
  .actions-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-box {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .page-header h1 {
    font-size: 1.8rem;
  }
  
  .document-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    max-height: 80vh;
  }
}