/* Feature 83 Premium Smart Start — /start/ Describe -> Import -> Review shell.
   Composes Feature 74/91 design tokens; does not redefine shared shell chrome. */

.smart-import-start-page .skip-link {
  position: fixed;
  top: var(--ic-space-3);
  left: var(--ic-space-3);
  z-index: 20;
  padding: var(--ic-space-2) var(--ic-space-4);
  background: var(--ic-color-surface);
  color: var(--ic-color-text);
  border-radius: var(--ic-radius-control);
  transform: translateY(-160%);
  transition: transform var(--ic-motion-standard);
}

.smart-import-start-page .skip-link:focus {
  transform: translateY(0);
}

.smart-import-start-page .start-container {
  --ic-content-width: 76rem;
}

.start-container {
  padding-top: var(--ic-space-8);
  padding-bottom: var(--ic-space-20);
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-8);
}

/* Hero: eyebrow / stepper / heading rhythm shared by all three states */

.start-hero {
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-3);
  max-width: 52rem;
}

.start-hero .ic-heading-1 {
  margin-top: var(--ic-space-1);
}

/* Stepper */

.start-stepper {
  margin: var(--ic-space-1) 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ic-space-2);
  list-style: none;
}

.start-stepper-step {
  display: flex;
  align-items: center;
  gap: var(--ic-space-2);
  color: var(--ic-color-text-muted);
}

.start-stepper-step:not(:last-child)::after {
  content: '';
  width: var(--ic-space-6);
  height: 1px;
  margin-inline: var(--ic-space-1);
  background: var(--ic-color-border);
}

.start-stepper-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  flex: 0 0 auto;
  border-radius: var(--ic-radius-pill);
  border: 1px solid var(--ic-color-border);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-xs);
  font-weight: var(--ic-weight-semibold);
  color: var(--ic-color-text-muted);
}

.start-stepper-label {
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  font-weight: var(--ic-weight-medium);
}

.start-stepper-step.is-current .start-stepper-marker {
  border-color: var(--ic-color-action);
  background: var(--ic-color-action);
  color: #fff;
}

.start-stepper-step.is-current .start-stepper-label {
  color: var(--ic-color-text);
  font-weight: var(--ic-weight-semibold);
}

.start-stepper-step.is-complete .start-stepper-marker {
  border-color: var(--ic-color-success);
  color: var(--ic-color-success);
}

.start-stepper-step.is-complete .start-stepper-label {
  color: var(--ic-color-text-muted);
}

/* Two-column source screens (Describe / Import) */

.start-two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ic-space-6);
  align-items: start;
}

.start-main-card,
.start-support-card {
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-2);
}

.start-textarea {
  width: 100%;
  min-height: 9rem;
  margin-top: var(--ic-space-2);
  padding: var(--ic-space-3);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  line-height: var(--ic-leading-body);
  color: var(--ic-color-text);
  background: var(--ic-color-surface);
  border: 1px solid var(--ic-color-border);
  border-radius: var(--ic-radius-control);
  resize: vertical;
}

.start-textarea:focus-visible {
  outline: none;
  box-shadow: var(--ic-focus-ring);
  border-color: var(--ic-color-action);
}

.start-samples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ic-space-2);
  margin: var(--ic-space-4) 0 0;
}

.start-sample-chip {
  min-height: 2.25rem;
  padding: 0 var(--ic-space-3);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text);
  background: var(--ic-color-canvas);
  border: 1px solid var(--ic-color-border);
  border-radius: var(--ic-radius-pill);
  cursor: pointer;
}

.start-sample-chip:hover {
  border-color: var(--ic-color-action);
}

.start-sample-chip:focus-visible {
  outline: none;
  box-shadow: var(--ic-focus-ring);
}

/* Primary action zone: the one visually dominant next step per screen */

.start-primary-action {
  margin-top: var(--ic-space-5);
  padding-top: var(--ic-space-4);
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-2);
  border-top: 1px solid var(--ic-color-border);
}

.start-ai-consent {
  display: flex;
  align-items: flex-start;
  gap: var(--ic-space-2);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text);
}

.start-describe-actions {
  margin-top: var(--ic-space-1);
}

.start-secondary-actions {
  margin-top: var(--ic-space-4);
}

.start-import-note {
  margin-top: var(--ic-space-3);
}

.start-capability-list {
  margin: var(--ic-space-2) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-2);
}

.start-capability-list li {
  padding-left: var(--ic-space-5);
  position: relative;
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text);
}

.start-capability-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: var(--ic-radius-pill);
  background: var(--ic-color-border);
}

.start-file-facts {
  margin-top: var(--ic-space-2);
  padding-top: var(--ic-space-2);
  border-top: 1px solid var(--ic-color-border);
}

/* PDF dropzone */

.start-dropzone {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--ic-space-2);
  padding: var(--ic-space-6) var(--ic-space-4);
  border: 1px dashed var(--ic-color-border);
  border-radius: var(--ic-radius-card);
  background: var(--ic-color-canvas);
  transition: border-color var(--ic-motion-standard), background var(--ic-motion-standard);
}

.start-dropzone.is-dragover {
  border-color: var(--ic-color-action);
  background: rgba(178, 59, 59, 0.06);
}

.start-dropzone.is-ready {
  border-style: solid;
  border-color: var(--ic-color-success);
}

.start-dropzone.is-error {
  border-style: solid;
  border-color: var(--ic-color-danger);
}

.start-dropzone-hint {
  margin: 0;
}

/* Processing feedback: AI extraction and on-device PDF reading both take
   real, human-noticeable time, so the button and status line make that
   wait visible rather than leaving the UI looking stalled. */

.start-spinner {
  display: inline-block;
  flex: none;
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: var(--ic-radius-pill);
  animation: start-spin 0.8s linear infinite;
  vertical-align: -0.15em;
}

.ic-button.is-loading {
  display: inline-flex;
  align-items: center;
  gap: var(--ic-space-2);
}

.start-status-pending {
  display: inline-flex;
  align-items: center;
  gap: var(--ic-space-2);
  color: var(--ic-color-text);
  font-weight: 600;
}

.start-status-pending .start-spinner {
  border-color: var(--ic-color-action);
  border-top-color: transparent;
}

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

/* Review: 72/28 main + sidebar composition */

.start-review-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--ic-space-4);
  flex-wrap: wrap;
}

.start-review-summary {
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  color: var(--ic-color-text);
}

.start-review-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ic-space-6);
  align-items: start;
}

.start-review-main {
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-4);
  min-width: 0;
}

.start-review-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-4);
  min-width: 0;
}

.start-summary-grid {
  margin-top: var(--ic-space-3);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: var(--ic-space-3);
}

.start-summary-row {
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-1);
  padding: var(--ic-space-3);
  border: 1px solid var(--ic-color-border);
  border-radius: var(--ic-radius-control);
  background: var(--ic-color-canvas);
}

.start-summary-row-label {
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-xs);
  color: var(--ic-color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.start-summary-row-value {
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  color: var(--ic-color-text);
}

.start-source-text {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--ic-font-mono);
  font-size: var(--ic-text-sm);
  line-height: var(--ic-leading-body);
  background: var(--ic-color-canvas);
  border: 1px solid var(--ic-color-border);
  border-radius: var(--ic-radius-control);
  padding: var(--ic-space-3);
  margin-top: var(--ic-space-3);
  max-height: 24rem;
  overflow: auto;
}

.start-source-panel summary {
  cursor: pointer;
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  font-weight: var(--ic-weight-medium);
  color: var(--ic-color-text);
}

.start-source-panel summary:focus-visible {
  outline: none;
  box-shadow: var(--ic-focus-ring);
}

.start-review-group {
  padding: var(--ic-space-4);
}

.start-field-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ic-space-3);
  padding: var(--ic-space-2) 0;
  border-bottom: 1px solid var(--ic-color-border);
}

.start-field-row:last-child {
  border-bottom: none;
}

.start-field-label {
  min-width: 11rem;
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text-muted);
}

.start-field-value {
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  color: var(--ic-color-text);
}

.start-field-input {
  flex: 1 1 12rem;
  min-height: var(--ic-control-height);
  padding: 0 var(--ic-space-3);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  border: 1px solid var(--ic-color-border);
  border-radius: var(--ic-radius-control);
  background: var(--ic-color-surface);
  color: var(--ic-color-text);
}

.start-field-input:focus-visible {
  outline: none;
  box-shadow: var(--ic-focus-ring);
  border-color: var(--ic-color-action);
}

.start-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  padding: 0.15em 0.6em;
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-xs);
  font-weight: var(--ic-weight-semibold);
  border-radius: var(--ic-radius-pill);
  border: 1px solid var(--ic-color-border);
  white-space: nowrap;
}

.start-badge--found {
  color: var(--ic-color-success);
  border-color: var(--ic-color-success);
}

.start-badge--review {
  color: var(--ic-color-warning);
  border-color: var(--ic-color-warning);
}

.start-badge--missing {
  color: var(--ic-color-text-muted);
}

.start-badge--mismatch {
  color: var(--ic-color-danger);
  border-color: var(--ic-color-danger);
}

.start-line-item {
  padding: var(--ic-space-3) 0;
  border-top: 1px solid var(--ic-color-border);
}

.start-line-item:first-of-type {
  border-top: none;
}

.start-line-title {
  margin-bottom: var(--ic-space-2);
}

.start-fixed-amount-note {
  margin-top: var(--ic-space-1);
}

.start-line-summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--ic-space-3);
}

.start-line-summary-desc {
  flex: 1 1 12rem;
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  color: var(--ic-color-text);
}

.start-line-summary-meta {
  font-family: var(--ic-font-mono);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text-muted);
  white-space: nowrap;
}

.start-line-summary-amount {
  font-family: var(--ic-font-mono);
  font-size: var(--ic-text-base);
  font-weight: var(--ic-weight-semibold);
  color: var(--ic-color-text);
  white-space: nowrap;
}

.start-line-tax-summary {
  margin-top: var(--ic-space-1);
}

@media (max-width: 640px) {
  .start-line-summary {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--ic-space-1);
  }

  .start-line-summary-amount {
    font-size: var(--ic-text-lg);
  }
}

.start-calculated-totals {
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-1);
  padding: var(--ic-space-3);
  margin-bottom: var(--ic-space-3);
  background: var(--ic-color-canvas);
  border: 1px solid var(--ic-color-border);
  border-radius: var(--ic-radius-control);
}

.start-calculated-total-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--ic-space-3);
  font-family: var(--ic-font-mono);
  font-size: var(--ic-text-base);
  color: var(--ic-color-text);
}

.start-calculated-total-row--grand {
  padding-top: var(--ic-space-2);
  margin-top: var(--ic-space-1);
  border-top: 1px solid var(--ic-color-border);
  font-size: var(--ic-text-lg);
  font-weight: var(--ic-weight-semibold);
}

.start-pdf-error-actions {
  margin-top: var(--ic-space-1);
}

.start-mismatch-row,
.start-inversion-notice {
  display: flex;
  align-items: center;
  gap: var(--ic-space-2);
  flex-wrap: wrap;
}

.start-pricing-picker {
  display: flex;
  gap: var(--ic-space-4);
  flex-wrap: wrap;
}

.start-pricing-option {
  display: inline-flex;
  align-items: center;
  gap: var(--ic-space-1);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text);
}

/* Review checklist */

.start-checklist {
  margin: var(--ic-space-2) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-2);
}

.start-checklist-item {
  display: flex;
  align-items: flex-start;
  gap: var(--ic-space-2);
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-sm);
  color: var(--ic-color-text);
}

.start-checklist-item .start-badge {
  flex: 0 0 auto;
}

.start-issue-list {
  margin: var(--ic-space-3) 0 0;
  padding-left: var(--ic-space-6);
  display: flex;
  flex-direction: column;
  gap: var(--ic-space-2);
}

.start-issue-link {
  display: block;
  width: 100%;
  padding: var(--ic-space-1) 0;
  font-family: var(--ic-font-sans);
  font-size: var(--ic-text-base);
  text-align: left;
  color: var(--ic-color-action);
  background: transparent;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.start-issue-link:hover {
  color: var(--ic-color-action-hover, var(--ic-color-action));
}

.start-issue-link:focus-visible {
  outline: none;
  box-shadow: var(--ic-focus-ring);
  border-radius: var(--ic-radius-control);
}

.start-issue-target-flash {
  animation: start-issue-target-flash 1.2s ease-out;
}

@keyframes start-issue-target-flash {
  0% { background-color: var(--ic-color-warning-surface, rgba(230, 162, 60, 0.25)); }
  100% { background-color: transparent; }
}

/* Sticky action bar */

.start-accept-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ic-space-4);
  flex-wrap: wrap;
  padding: var(--ic-space-4);
}

.start-sticky-bar {
  position: sticky;
  bottom: var(--ic-space-3);
  z-index: 5;
}

.start-accept-note {
  margin-top: var(--ic-space-1);
}

.start-accepted {
  display: flex;
  gap: var(--ic-space-2);
  align-items: flex-start;
}

.start-noscript {
  padding: var(--ic-space-6);
  font-family: var(--ic-font-sans);
}

@media (min-width: 900px) {
  .start-two-col {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .start-review-columns {
    grid-template-columns: minmax(0, 1.72fr) minmax(0, 0.94fr);
  }

  .start-review-sidebar {
    position: sticky;
    top: var(--ic-space-4);
    max-height: calc(100vh - 2 * var(--ic-space-4));
    overflow: auto;
  }
}

@media (max-width: 640px) {
  .start-field-label {
    min-width: 100%;
  }

  .start-stepper-step:not(:last-child)::after {
    width: var(--ic-space-3);
  }

  .start-stepper-label {
    font-size: var(--ic-text-xs);
  }

  .start-review-heading {
    flex-direction: column;
  }

  .start-accept-bar {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .start-dropzone,
  .start-skip-link,
  .smart-import-start-page .skip-link {
    transition-duration: 0.01ms;
  }

  .start-issue-target-flash {
    animation-duration: 0.01ms;
  }

  .start-spinner {
    animation: none;
    border-top-color: currentColor;
    opacity: 0.6;
  }
}