/* ============================================
   PIXELGUARD - UPLOAD FORM STYLES
   Styles for file upload and form components
   ============================================ */

.form-container {
  max-width: 800px;
  margin: 0 auto;
}

.upload-form {
  background: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Form Sections */
.form-section {
  margin-bottom: var(--spacing-2xl);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
}

.label-icon {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

/* File Upload Area */
.file-upload-area {
  position: relative;
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.file-upload-area:hover {
  border-color: var(--color-primary);
  background: var(--color-gray-50);
}

.file-upload-area.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  background-opacity: 0.1;
}

.file-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-placeholder {
  pointer-events: none;
}

.upload-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-gray-400);
}

.upload-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-xs);
}

.upload-subtext {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* Image Preview */
.image-preview {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.image-preview img {
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.preview-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
}

.preview-filename {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-gray-700);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-remove {
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-error);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.btn-remove:hover {
  background: #dc2626;
}

/* Form Input */
.form-input {
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  font-family: var(--font-family);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

/* Form Helper Text */
.form-helper {
  display: flex;
  align-items: start;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.5;
}

.helper-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

/* Form Actions */
.form-actions {
  display: flex;
  justify-content: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
}

/* Info Cards */
.info-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.info-card {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.info-card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-900);
}

.info-list {
  list-style-position: inside;
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

.info-list li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

.info-list ol {
  list-style-type: decimal;
}

/* Dark theme overrides */
[data-theme="dark"] .upload-form {
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-300);
}

[data-theme="dark"] .form-label {
  color: var(--color-gray-800);
}

[data-theme="dark"] .file-upload-area {
  border-color: var(--color-gray-300);
  background: var(--color-gray-100);
  color: var(--color-gray-800);
}

[data-theme="dark"] .file-upload-area:hover {
  border-color: var(--color-primary);
  background: var(--color-gray-200);
}

[data-theme="dark"] .upload-placeholder {
  color: var(--color-gray-700);
}

[data-theme="dark"] .upload-text,
[data-theme="dark"] .upload-subtext,
[data-theme="dark"] .preview-filename,
[data-theme="dark"] .form-helper {
  color: var(--color-gray-700);
}

[data-theme="dark"] .image-preview img {
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .preview-info {
  background: var(--color-gray-200);
}

[data-theme="dark"] .form-input,
[data-theme="dark"] .message-textarea {
  background: var(--color-gray-100);
  color: var(--color-gray-800);
  border-color: var(--color-gray-300);
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .message-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

[data-theme="dark"] .mode-label {
  border-color: var(--color-gray-300);
  background: var(--color-gray-100);
}

[data-theme="dark"] .mode-option input[type="radio"]:checked + .mode-label {
  border-color: var(--color-primary);
  background: var(--gradient-primary);
  color: var(--color-white);
}

[data-theme="dark"] .helper-card {
  background: var(--color-gray-100);
  border-color: var(--color-gray-300);
  color: var(--color-gray-700);
}

[data-theme="dark"] .result-card {
  background: var(--color-gray-100);
  border-color: var(--color-gray-300);
  color: var(--color-gray-800);
}

/* Mode selector (channel selection) */
.mode-selector {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
  align-items: stretch;
  flex-wrap: wrap;
}

.mode-selector.inline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.mode-option {
  flex: 1;
  position: relative;
  min-width: 180px;
}

.mode-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.mode-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-lg);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--color-white);
  height: 100%;
}

.mode-option input[type="radio"]:checked + .mode-label {
  border-color: var(--color-primary);
  background: var(--gradient-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.mode-label:hover {
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
}

.mode-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.mode-title {
  font-weight: 600;
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.mode-description {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  text-align: center;
}

.mode-option input[type="radio"]:checked + .mode-label .mode-description {
  color: rgba(255, 255, 255, 0.9);
}

.helper-card {
  background: var(--color-gray-50);
  border: 1px dashed var(--color-gray-300);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  color: var(--color-gray-700);
  margin-top: var(--spacing-sm);
}

.result-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  margin-top: var(--spacing-lg);
}

/* Loading State */
.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin-left: -8px;
  margin-top: -8px;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .upload-form {
    padding: var(--spacing-lg);
  }

  .file-upload-area {
    padding: var(--spacing-lg);
  }

  .upload-icon {
    width: 48px;
    height: 48px;
  }

  .info-cards {
    grid-template-columns: 1fr;
  }
}