@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=DM+Sans:wght@400;500&display=swap');

.hvac-diagnostic {
  --color-bg: #EDF2F7;
  --color-surface: #FFFFFF;
  --color-border: #E7E5E4;
  --color-border-light: #F5F5F4;
  --color-text: #1C1917;
  --color-text-secondary: #57534E;
  --color-text-muted: #A8A29E;
  --color-primary: #0369A1;
  --color-primary-hover: #0284C7;
  --color-primary-light: #E0F2FE;
  --color-green: #15803D;
  --color-green-bg: #DCFCE7;
  --color-green-border: #BBF7D0;
  --color-yellow: #A16207;
  --color-yellow-bg: #FEF9C3;
  --color-yellow-border: #FDE047;
  --color-red: #B91C1C;
  --color-red-bg: #FEE2E2;
  --color-red-border: #FECACA;
  --color-danger: #991B1B;
  --color-danger-bg: #FEF2F2;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100%;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.hvac-diagnostic * {
  box-sizing: border-box;
}

.hvac-container {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

@media (min-width: 640px) {
  .hvac-container {
    padding: 40px 24px 64px;
  }
}

.hvac-header {
  text-align: center;
  margin-bottom: 32px;
}

.hvac-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 8px;
  letter-spacing: -0.025em;
}

@media (min-width: 640px) {
  .hvac-header h1 {
    font-size: 2.25rem;
  }
}

.hvac-header p {
  font-family: 'DM Sans', sans-serif;
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 1rem;
}

.hvac-progress {
  margin-bottom: 32px;
}

.hvac-progress-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.hvac-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hvac-progress-text {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.hvac-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 640px) {
  .hvac-card {
    padding: 32px;
  }
}

.hvac-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 20px;
  color: var(--color-text);
}

.hvac-step-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.hvac-symptom-grid {
  display: grid;
  gap: 12px;
}

.hvac-symptom-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  width: 100%;
}

.hvac-symptom-item:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.hvac-symptom-item.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.hvac-symptom-checkbox {
  width: 22px;
  height: 22px;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  transition: all 0.2s ease;
}

.hvac-symptom-item.selected .hvac-symptom-checkbox {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.hvac-symptom-checkbox svg {
  width: 14px;
  height: 14px;
  color: white;
  opacity: 0;
  transform: scale(0.5);
  transition: all 0.2s ease;
}

.hvac-symptom-item.selected .hvac-symptom-checkbox svg {
  opacity: 1;
  transform: scale(1);
}

.hvac-symptom-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.hvac-symptom-content {
  flex: 1;
  min-width: 0;
}

.hvac-symptom-label {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 2px;
}

.hvac-symptom-desc {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.hvac-followup-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
}

.hvac-followup-symptom {
  margin-bottom: 28px;
}

.hvac-followup-symptom:last-child {
  margin-bottom: 0;
}

.hvac-followup-symptom-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hvac-question {
  margin-bottom: 20px;
}

.hvac-question:last-child {
  margin-bottom: 0;
}

.hvac-question-text {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 10px;
}

.hvac-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hvac-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
  width: 100%;
}

.hvac-option:hover {
  border-color: var(--color-primary);
}

.hvac-option.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.hvac-option-radio {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.hvac-option.selected .hvac-option-radio {
  border-color: var(--color-primary);
}

.hvac-option-radio::after {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0;
  transform: scale(0);
  transition: all 0.15s ease;
}

.hvac-option.selected .hvac-option-radio::after {
  opacity: 1;
  transform: scale(1);
}

.hvac-option-check {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.hvac-option.selected .hvac-option-check {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.hvac-option-check svg {
  width: 12px;
  height: 12px;
  color: white;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.hvac-option.selected .hvac-option-check svg {
  opacity: 1;
}

.hvac-option-label {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.875rem;
  color: var(--color-text);
}

.hvac-button-row {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.hvac-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.hvac-button-primary {
  background: var(--color-primary);
  color: white;
  flex: 1;
  min-width: 160px;
}

.hvac-button-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.hvac-button-primary:disabled {
  background: var(--color-text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.hvac-button-secondary {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.hvac-button-secondary:hover {
  background: var(--color-bg);
  border-color: var(--color-text-muted);
}

.hvac-safety-alert {
  background: var(--color-danger-bg);
  border: 2px solid var(--color-red-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
}

.hvac-safety-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.hvac-safety-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-danger);
  margin-bottom: 16px;
}

.hvac-safety-message {
  font-family: 'DM Sans', sans-serif;
  color: var(--color-text);
  text-align: left;
  white-space: pre-line;
  margin-bottom: 20px;
  line-height: 1.7;
  font-size: 0.9375rem;
}

.hvac-safety-contacts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.hvac-safety-contact {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px;
  background: white;
  border-radius: var(--radius-md);
}

.hvac-safety-contact-label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.hvac-safety-contact-number {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-danger);
  text-decoration: none;
}

.hvac-safety-footer {
  font-weight: 600;
  color: var(--color-danger);
  font-size: 0.9375rem;
}

.hvac-results {
  animation: fadeIn 0.4s ease;
}

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

.hvac-result-header {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.hvac-urgency-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.hvac-urgency-badge.green {
  background: var(--color-green-bg);
  color: var(--color-green);
  border: 1px solid var(--color-green-border);
}

.hvac-urgency-badge.yellow {
  background: var(--color-yellow-bg);
  color: var(--color-yellow);
  border: 1px solid var(--color-yellow-border);
}

.hvac-urgency-badge.red {
  background: var(--color-red-bg);
  color: var(--color-red);
  border: 1px solid var(--color-red-border);
}

.hvac-diagnosis-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

@media (min-width: 640px) {
  .hvac-diagnosis-name {
    font-size: 1.75rem;
  }
}

.hvac-confidence {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.hvac-confidence-bar {
  width: 100px;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.hvac-confidence-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
}

.hvac-result-section {
  margin-bottom: 28px;
}

.hvac-result-section:last-child {
  margin-bottom: 0;
}

.hvac-result-section-title {
  font-size: 1.2rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #222222;
  margin-bottom: 12px;
}

.hvac-explanation {
  font-family: 'DM Sans', sans-serif;
  color: var(--color-text);
  line-height: 1.7;
  font-size: 0.9375rem;
}

.hvac-savannah-note {
  margin-top: 16px;
  padding: 14px 16px;
  background: linear-gradient(135deg, #E0F2FE 0%, #F0F9FF 100%);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.hvac-savannah-note-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hvac-savannah-note p {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.875rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.5;
}

.hvac-diy-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hvac-diy-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.5;
}

.hvac-diy-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.hvac-diy-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}

.hvac-cost-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.hvac-cost-item {
  padding: 16px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  text-align: center;
}

.hvac-cost-label {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.hvac-cost-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.hvac-cost-note {
  grid-column: 1 / -1;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  padding: 12px 16px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  line-height: 1.5;
}

.hvac-secondary-diagnoses {
  padding: 16px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
}

.hvac-secondary-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.hvac-secondary-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.hvac-secondary-item:first-child {
  padding-top: 0;
}

.hvac-secondary-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.hvac-secondary-likelihood {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.hvac-cta-section {
  margin-top: 32px;
  padding: 24px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0284C7 100%);
  border-radius: var(--radius-lg);
  text-align: center;
  color: white;
}

.hvac-cta-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.hvac-cta-subtitle {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.875rem;
  opacity: 0.9;
  margin-bottom: 16px;
}

.hvac-cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  background: white;
  color: var(--color-primary);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.hvac-cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.hvac-cta-details {
  margin-top: 12px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8125rem;
  opacity: 0.9;
}

.hvac-service-areas {
  margin-top: 8px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.75rem;
  opacity: 0.8;
}

.hvac-reset-link {
  display: block;
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  background: none;
  border: none;
}

.hvac-reset-link:hover {
  color: var(--color-primary);
}

.hvac-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
}

.hvac-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

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

.hvac-loading-text {
  font-family: 'DM Sans', sans-serif;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.hvac-urgency-description {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.hvac-error {
  padding: 24px;
  text-align: center;
  color: var(--color-text-secondary);
}

.hvac-error-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.hvac-error-text {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9375rem;
  margin-bottom: 16px;
}

/* =============================================================================
   IFRAME CONTAINER STYLES
   ============================================================================= */

.hvac-calculator-frame {
  width: 100%;
  height: 1200px;
  border: none;
}

.hvac-calculator-frame-modal {
  width: 100%;
  height: 1200px;
  border: none;
}

@media (max-width: 768px) {
  .hvac-calculator-frame {
    height: 1600px;
  }
  .hvac-calculator-frame-modal {
    height: 1800px;
  }
}