:root {
  --aivt-primary: #7c3aed;
  --aivt-primary-hover: #6d28d9;
  --aivt-bg: #ffffff;
  --aivt-bg-secondary: #f9fafb;
  --aivt-text: #111827;
  --aivt-text-secondary: #6b7280;
  --aivt-border: #e5e7eb;
  --aivt-success: #10b981;
  --aivt-error: #ef4444;
  --aivt-radius: 12px;
  --aivt-radius-sm: 8px;
  --aivt-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  --aivt-transition: 0.2s ease;
}

.aivt-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999999;
  align-items: center;
  justify-content: center;
}

.aivt-modal[aria-hidden="false"] {
  display: flex;
}

.aivt-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.aivt-modal-content {
  position: relative;
  background: var(--aivt-bg);
  border-radius: var(--aivt-radius);
  width: 90%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--aivt-shadow);
  z-index: 1;
  animation: aivtFadeIn 0.25s ease;
}

@keyframes aivtFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.aivt-modal-close {
  position: absolute;
  top: 16px;
  inset-inline-end: 16px;
  background: var(--aivt-bg-secondary);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--aivt-text);
  transition: background var(--aivt-transition);
  z-index: 2;
}

.aivt-modal-close:hover {
  background: var(--aivt-border);
}

.aivt-modal-body {
  padding: 32px;
}

.aivt-step {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.aivt-step-indicator {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 8px;
}

.aivt-step-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--aivt-border);
  transition: background var(--aivt-transition);
}

.aivt-step-dot.active {
  background: var(--aivt-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

.aivt-step-dot.completed {
  background: var(--aivt-success);
}

.aivt-step-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--aivt-text);
  text-align: center;
  margin: 0;
}

/* Upload Zone */
.aivt-upload-zone {
  border: 2px dashed var(--aivt-border);
  border-radius: var(--aivt-radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--aivt-transition);
  background: var(--aivt-bg-secondary);
}

.aivt-upload-zone:hover,
.aivt-upload-zone.aivt-dragover {
  border-color: var(--aivt-primary);
  background: rgba(124, 58, 237, 0.04);
}

.aivt-upload-icon {
  font-size: 48px;
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}

.aivt-upload-placeholder p {
  color: var(--aivt-text-secondary);
  margin: 0 0 16px;
}

.aivt-upload-preview {
  position: relative;
  border-radius: var(--aivt-radius);
  overflow: hidden;
  max-width: 280px;
  margin: 0 auto;
}

.aivt-upload-preview img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--aivt-radius);
}

.aivt-remove-photo {
  position: absolute;
  top: 8px;
  inset-inline-end: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Form Grid */
.aivt-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.aivt-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aivt-field label {
  font-size: 14px;
  font-weight: 500;
  color: var(--aivt-text);
}

.aivt-field .required {
  color: var(--aivt-error);
}

.aivt-field input,
.aivt-field select {
  padding: 10px 12px;
  border: 1px solid var(--aivt-border);
  border-radius: var(--aivt-radius-sm);
  font-size: 14px;
  color: var(--aivt-text);
  background: var(--aivt-bg);
  transition: border-color var(--aivt-transition);
}

.aivt-field input:focus,
.aivt-field select:focus {
  border-color: var(--aivt-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

/* Attributes */
.aivt-attributes {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.aivt-attr-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aivt-attr-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--aivt-text);
}

.aivt-attr-group select {
  padding: 10px 12px;
  border: 1px solid var(--aivt-border);
  border-radius: var(--aivt-radius-sm);
  font-size: 14px;
  background: var(--aivt-bg);
}

.aivt-no-attrs {
  color: var(--aivt-text-secondary);
  font-style: italic;
  text-align: center;
}

/* Consent */
.aivt-consent-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--aivt-text-secondary);
  line-height: 1.5;
  padding: 12px;
  background: var(--aivt-bg-secondary);
  border-radius: var(--aivt-radius-sm);
}

.aivt-consent-label input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--aivt-primary);
}

/* Buttons */
.aivt-step-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.aivt-step-actions .button,
.aivt-step-actions .button-primary {
  padding: 10px 24px;
  border-radius: var(--aivt-radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--aivt-transition);
  border: 1px solid var(--aivt-border);
  background: var(--aivt-bg);
  color: var(--aivt-text);
}

.aivt-step-actions .button-primary {
  background: var(--aivt-primary);
  color: #fff;
  border-color: var(--aivt-primary);
}

.aivt-step-actions .button-primary:hover {
  background: var(--aivt-primary-hover);
}

.aivt-step-actions .button-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Loading */
.aivt-loading {
  text-align: center;
  padding: 40px 0;
}

.aivt-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--aivt-border);
  border-top-color: var(--aivt-primary);
  border-radius: 50%;
  animation: aivtSpin 0.8s linear infinite;
  margin: 0 auto 16px;
}

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

.aivt-loading-text {
  color: var(--aivt-text-secondary);
  font-size: 15px;
}

.aivt-preview-skeleton {
  width: 100%;
  aspect-ratio: 3/4;
  max-width: 300px;
  margin: 0 auto;
  border-radius: var(--aivt-radius);
  background-size: cover;
  background-position: center;
  opacity: 0.5;
}

/* Result / Comparison */
.aivt-result-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.aivt-result-original,
.aivt-result-generated {
  border-radius: var(--aivt-radius);
  overflow: hidden;
  position: relative;
}

.aivt-result-original img,
.aivt-result-generated img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--aivt-radius);
}

.aivt-result-label {
  position: absolute;
  bottom: 8px;
  inset-inline-start: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 20px;
}

/* Try-On Button on Product Page */
.aivt-tryon-btn {
  display: inline-flex !important;
  align-items: center;
  gap: 8px;
  margin-inline-start: 8px !important;
}

.aivt-tryon-btn .aivt-btn-icon {
  font-size: 18px;
  line-height: 1;
}

/* Error message */
.aivt-error-message {
  background: #fef2f2;
  color: var(--aivt-error);
  border: 1px solid #fecaca;
  border-radius: var(--aivt-radius-sm);
  padding: 10px 16px;
  font-size: 14px;
  animation: aivtFadeIn 0.2s ease;
}

/* RTL Support */
[dir="rtl"] .aivt-modal-close {
  right: auto;
  left: 16px;
}

[dir="rtl"] .aivt-result-label {
  left: auto;
  right: 8px;
}

/* Mobile */
@media (max-width: 600px) {
  .aivt-modal-content {
    width: 100%;
    max-height: 100vh;
    border-radius: 0;
  }

  .aivt-modal-body {
    padding: 20px;
  }

  .aivt-form-grid {
    grid-template-columns: 1fr;
  }

  .aivt-result-comparison {
    grid-template-columns: 1fr;
  }

  .aivt-step-actions {
    flex-direction: column;
  }

  .aivt-step-actions .button,
  .aivt-step-actions .button-primary {
    width: 100%;
    text-align: center;
  }
}

/* Body lock */
body.aivt-modal-open {
  overflow: hidden;
}