body, html {
  margin: 0;
  padding: 0;
  background: #f7f9fc;
}

.mobile-header {
  background: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 8px 12px;
  border-bottom: 1px solid #eee;
  display: flex;
  align-items: center;
}

.back-icon i {
  font-size: 16px;
}

.container {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.task-section {
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  margin-bottom: 16px;
}

.task-header img {
  width: 100%;
  max-height: 200px;
  object-fit: contain;
  border-radius: 6px;
  background: #fff;
  border: 1px solid #eee;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.sample-img {
  max-width: 100%;
  max-height: 200px;
  margin-top: 10px;
  border: 1px solid #eee;
  border-radius: 4px;
}

.text-danger {
  font-weight: bold;
  color: #dc3545 !important;
}

.btn-block {
  margin-top: 15px;
}

.upload-box-wrapper {
  margin-top: 10px;
}

.upload-box {
  width: 64px;
  height: 64px;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 2px dashed #28a745;
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.3s;
}

.upload-box:hover {
  border-color: #1e7e34;
}

.upload-box i {
  font-size: 20px;
  color: #333;
}

.upload-filename {
  font-size: 13px;
  word-break: break-all;
}

.preview-image img {
  max-width: 100px;
  max-height: 100px;
  border-radius: 4px;
  margin-top: 6px;
  border: 1px solid #ddd;
}