phd-advisor-frontend/src/styles/FileUpload.css

/* File Upload Container */
.file-upload-container {
  width: 100%;
  margin-bottom: 12px;
}

/* Upload Status Banner */
.upload-status {
  padding: 8px 12px;
  border-radius: 8px;
  margin-bottom: 8px;
  border: 1px solid;
  animation: slideDown 0.3s ease-out;
}

.upload-status.success {
  background-color: #DCFCE7;
  border-color: #22C55E;
  color: #15803D;
}

[data-theme="dark"] .upload-status.success {
  background-color: #14532D;
  border-color: #22C55E;
  color: #22C55E;
}

.upload-status.error {
  background-color: #FEF2F2;
  border-color: #EF4444;
  color: #DC2626;
}

[data-theme="dark"] .upload-status.error {
  background-color: #7F1D1D;
  border-color: #EF4444;
  color: #FCA5A5;
}

.status-content {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-icon {
  flex-shrink: 0;
}

.status-message {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
}

.status-close {
  background: none;
  border: none;
  padding: 2px;
  cursor: pointer;
  border-radius: 4px;
  color: inherit;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.status-close:hover {
  opacity: 1;
}

/* Upload Area */
.file-upload-area {
  border: 2px dashed #D1D5DB;
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background-color: #F9FAFB;
  position: relative;
  overflow: hidden;
}

[data-theme="dark"] .file-upload-area {
  border-color: #374151;
  background-color: #1F2937;
}

.file-upload-area:hover:not(.uploading) {
  border-color: #3B82F6;
  background-color: #EFF6FF;
  transform: translateY(-1px);
}

[data-theme="dark"] .file-upload-area:hover:not(.uploading) {
  border-color: #60A5FA;
  background-color: #1E3A8A;
}

.file-upload-area.drag-active {
  border-color: #3B82F6;
  background-color: #EFF6FF;
  transform: scale(1.02);
}

[data-theme="dark"] .file-upload-area.drag-active {
  border-color: #60A5FA;
  background-color: #1E3A8A;
}

.file-upload-area.uploading {
  cursor: not-allowed;
  opacity: 0.7;
}

.upload-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.upload-icon {
  color: #6B7280;
  margin-bottom: 4px;
}

[data-theme="dark"] .upload-icon {
  color: #9CA3AF;
}

.file-upload-area:hover:not(.uploading) .upload-icon {
  color: #3B82F6;
}

[data-theme="dark"] .file-upload-area:hover:not(.uploading) .upload-icon {
  color: #60A5FA;
}

.upload-text {
  margin: 0;
  font-size: 14px;
  color: #374151;
}

[data-theme="dark"] .upload-text {
  color: #D1D5DB;
}

.upload-primary {
  font-weight: 600;
  color: #3B82F6;
}

[data-theme="dark"] .upload-primary {
  color: #60A5FA;
}

.upload-secondary {
  margin: 0;
  font-size: 12px;
  color: #6B7280;
  margin-top: 4px;
}

[data-theme="dark"] .upload-secondary {
  color: #9CA3AF;
}

/* Upload Spinner */
.upload-spinner {
  display: flex;
  justify-content: center;
  align-items: center;
}

.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid #E5E7EB;
  border-top: 2px solid #3B82F6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

[data-theme="dark"] .spinner {
  border-color: #374151;
  border-top-color: #60A5FA;
}

/* Supported File Types */
.supported-types {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.file-type-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background-color: #F3F4F6;
  border-radius: 16px;
  font-size: 11px;
  font-weight: 500;
  color: #6B7280;
  border: 1px solid #E5E7EB;
}

[data-theme="dark"] .file-type-chip {
  background-color: #374151;
  border-color: #4B5563;
  color: #9CA3AF;
}

/* Enhanced Chat Input with Upload */
.enhanced-chat-input {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.input-with-upload {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  width: 100%;
}

.upload-toggle-btn {
  background: #F3F4F6;
  border: 1px solid #D1D5DB;
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
}

[data-theme="dark"] .upload-toggle-btn {
  background-color: #374151;
  border-color: #4B5563;
}

.upload-toggle-btn:hover {
  background-color: #E5E7EB;
  border-color: #3B82F6;
}

[data-theme="dark"] .upload-toggle-btn:hover {
  background-color: #4B5563;
  border-color: #60A5FA;
}

.upload-toggle-btn.active {
  background-color: #3B82F6;
  border-color: #3B82F6;
  color: white;
}

.upload-toggle-btn svg {
  color: #6B7280;
}

[data-theme="dark"] .upload-toggle-btn svg {
  color: #9CA3AF;
}

.upload-toggle-btn:hover svg,
.upload-toggle-btn.active svg {
  color: currentColor;
}

/* Animations */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Compact upload area for chat input */
.file-upload-container.compact .file-upload-area {
  padding: 16px;
  font-size: 13px;
}

.file-upload-container.compact .upload-content {
  gap: 6px;
}

.file-upload-container.compact .upload-icon {
  width: 20px;
  height: 20px;
}

.file-upload-container.compact .supported-types {
  margin-top: 6px;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .file-upload-area {
    padding: 16px;
  }
  
  .supported-types {
    gap: 6px;
  }
  
  .file-type-chip {
    font-size: 10px;
    padding: 3px 6px;
  }
}