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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

.container {
  max-width: 700px;
  margin: 0 auto;
}

.header {
  text-align: center;
  color: #fff;
  margin-bottom: 30px;
  padding: 30px 0;
}

.header h1 {
  font-size: 36px;
  margin-bottom: 10px;
  font-weight: 600;
}

.subtitle {
  font-size: 16px;
  opacity: 0.9;
}

.form-card, .success-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: #333;
  margin-bottom: 8px;
}

.required {
  color: #e74c3c;
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.3s;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.error-msg {
  display: block;
  color: #e74c3c;
  font-size: 12px;
  margin-top: 4px;
  min-height: 16px;
}

.upload-area {
  border: 2px dashed #ddd;
  border-radius: 8px;
  padding: 30px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
}

.upload-area:hover,
.upload-area.dragover {
  border-color: #667eea;
  background: rgba(102, 126, 234, 0.05);
}

.upload-icon {
  font-size: 36px;
  display: block;
  margin-bottom: 10px;
}

.upload-placeholder p {
  color: #666;
  font-size: 14px;
  margin-bottom: 4px;
}

.upload-hint {
  font-size: 12px !important;
  color: #999 !important;
}

.file-list {
  text-align: left;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: #f8f9fa;
  border-radius: 6px;
  margin-bottom: 8px;
}

.file-item:last-child {
  margin-bottom: 0;
}

.file-name {
  font-size: 13px;
  color: #333;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-size {
  font-size: 12px;
  color: #999;
  margin: 0 10px;
}

.file-remove {
  color: #e74c3c;
  cursor: pointer;
  font-size: 18px;
  background: none;
  border: none;
}

.submit-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  margin-top: 10px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

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

.success-icon {
  width: 80px;
  height: 80px;
  line-height: 80px;
  background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  color: #fff;
  font-size: 40px;
  border-radius: 50%;
  margin: 0 auto 20px;
}

.success-card h2 {
  font-size: 28px;
  color: #333;
  margin-bottom: 10px;
}

.success-card p {
  color: #666;
  margin-bottom: 30px;
}

.complaint-id {
  background: #f8f9fa;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.complaint-id span {
  color: #666;
  font-size: 14px;
}

.complaint-id strong {
  color: #333;
  font-size: 18px;
  font-family: monospace;
}

.copy-btn {
  padding: 6px 16px;
  background: #667eea;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
}

@media (max-width: 600px) {
  .header h1 {
    font-size: 28px;
  }
  .form-card, .success-card {
    padding: 24px;
  }
}