frontend/src/components/UploadZone.module.css

.uploadContainer {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 550px;
  animation: slideUpFloat 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
  opacity: 0;
  transform: translateY(40px);
  position: relative;
  z-index: 20;
}

.dropZone {
  width: 100%;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--border-glass);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.dropZone:hover, .dragging {
  border-color: var(--accent-primary);
  background: rgba(255, 42, 42, 0.05);
  box-shadow: 
    inset 0 0 30px rgba(255, 42, 42, 0.05),
    0 15px 40px rgba(0, 0, 0, 0.4);
  transform: translateY(-8px);
}

.promptContent {
  text-align: center;
  pointer-events: none;
}

.icon {
  margin-bottom: 1.5rem;
  color: var(--accent-primary);
  filter: drop-shadow(0 10px 20px rgba(56, 189, 248, 0.4));
  transition: transform 0.3s ease;
}

.dropZone:hover .icon {
  transform: scale(1.1) translateY(-5px);
}

.hint {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 0.5rem;
}

.previewContainer {
  width: 100%;
  height: 100%;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.4s ease;
}

.previewImage {
  max-width: 100%;
  max-height: 220px;
  object-fit: contain;
  border-radius: 12px;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.5));
}

.actions {
  margin-top: 1.5rem;
}

.resetBtn {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-body);
  font-weight: 500;
}

.resetBtn:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.errorMessage {
  color: var(--accent-primary);
  margin-top: 1.5rem;
  font-weight: 600;
  text-align: center;
  background: rgba(255, 42, 42, 0.1);
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 42, 42, 0.2);
}

.submitBtn {
  margin-top: 2rem;
  width: 100%;
  font-size: 1.2rem;
  padding: 18px;
  animation: popIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideUpFloat {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popIn {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.errorShake {
  animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
  border-color: var(--accent-primary);
}

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

@media (max-width: 968px) {
  .uploadContainer {
    max-width: 100%;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .dropZone {
    min-height: 260px;
  }
  .previewContainer {
    min-height: 260px;
  }
  .submitBtn {
    font-size: 1.05rem;
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .dropZone {
    min-height: 220px;
    border-radius: 16px;
  }
  .previewContainer {
    min-height: 220px;
  }
  .previewImage {
    max-height: 180px;
  }
  .submitBtn {
    font-size: 1rem;
    padding: 14px;
  }
}