/* ==========================================================================
   Form Preview — dock preview pane + all rf-* form field styles
   Uses the app's design tokens: --c-*, --sp-*, --fs-*, --r-*, --shadow-*
   Loaded by index.html alongside app.css / dock.css.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Preview pane — acts as the outer shell (like .pf-page in public form)
   -------------------------------------------------------------------------- */

.preview-pane {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
}

/* Sticky header inside the preview pane (mirrors public-form .pf-header) */
.preview-pane .pf-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: 0 var(--sp-5);
  height: 52px;
  flex-shrink: 0;
  background: var(--c-bg);
  border-bottom: var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
      max-width: 600px;
    width: 100%;
    margin-inline: auto;
}

.preview-pane .pf-header__left {
  flex: 1;
  min-width: 0;
}

.preview-pane .pf-form-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--c-ink);
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.preview-pane .pf-header__right {
  flex: 0 0 auto;
}

.preview-pane .pf-org-wrap {
  display: flex;
  align-items: center;
  gap: 0;
  cursor: default;
  position: relative;
}

.preview-pane .pf-org-name {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--c-ink-2);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity 0.2s ease, transform 0.2s ease, margin 0.2s ease;
  pointer-events: none;
  margin-right: 0;
}

.preview-pane .pf-org-wrap:hover .pf-org-name {
  opacity: 1;
  transform: translateX(0);
  margin-right: var(--sp-2);
  pointer-events: auto;
}

.preview-pane .pf-org-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c-accent);
  color: var(--c-ink-inv);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-semibold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  border: var(--border);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  letter-spacing: 0.03em;
}

.preview-pane .pf-org-wrap:hover .pf-org-avatar {
  transform: scale(1.06);
  box-shadow: 0 4px 12px rgba(10, 10, 10, 0.18);
}

.preview-pane .pf-org-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* Scrollable body area (mirrors public-form .pf-body) */
.preview-pane .pf-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  width: min(100%, 600px);
  margin: 0 auto;
  padding: var(--sp-5);
  gap: 3rem;
}

/* Description */
.preview-pane .pf-description {
  font-size: var(--fs-sm);
  color: var(--c-ink-2);
  line-height: var(--lh-base);
  margin: 0;
}

/* I/O section inside the preview (mirrors public-form .pf-io-section) */
.preview-pane .pf-io-section {
  position: relative;
  border-radius: var(--r-lg);
  background: var(--c-surface);
  border: var(--border);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.preview-pane .pf-io-section:focus-within,
.preview-pane .pf-io-section:hover {
  border-color: var(--c-line-2);
  box-shadow: var(--shadow-sm);
}

/* Gradient top accent strip */
.preview-pane .pf-io-section::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(10, 10, 10, 0.08) 20%,
    rgba(10, 10, 10, 0.2) 50%,
    rgba(10, 10, 10, 0.08) 80%,
    transparent 100%
  );
}

/* Form wrapper (for sweep overlay positioning) */
.preview-pane .pf-form-wrap {
  position: relative;
  border: var(--border);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.preview-pane .pf-form-wrap__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4);
  border-bottom: var(--border);
  background:
    radial-gradient(circle at top left, rgba(10, 10, 10, 0.055), transparent 34%),
    linear-gradient(180deg, var(--c-surface-2), var(--c-surface));
}

.preview-pane .pf-form-wrap__eyebrow {
  margin: 0 0 var(--sp-1);
  color: var(--c-ink-2);
  font-size: 10px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.preview-pane .pf-form-wrap__title {
  margin: 0;
  color: var(--c-ink);
  font-size: var(--fs-normal);
  font-weight: var(--fw-semibold, 600);
  letter-spacing: -0.02em;
}

.preview-pane .pf-form-wrap__meta {
  flex: 0 0 auto;
  margin-top: 1px;
  padding: 3px var(--sp-2);
  border: var(--border);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.72);
  color: var(--c-ink-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  white-space: nowrap;
}

.preview-pane .pf-form-wrap > .rendered-form {
  padding: var(--sp-4);
}

/* Slides mode inside the preview — expand form-wrap to fill the body */
.preview-pane.is-slides .pf-form-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.preview-pane.is-slides .pf-form-wrap > .rendered-form {
  flex: 1;
  min-height: 0;
  padding: 0;
}

.preview-pane.is-slides .pf-body {
  overflow: hidden;
  gap: 2rem;
  padding-bottom: 0;
}

/* Form fill sweep overlay (io-fill event) */
.preview-pane .pf-form-sweep {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
  border-radius: var(--r-lg);
  background:
    linear-gradient(
      105deg,
      transparent 0%,
      rgba(255, 255, 255, 0.75) 40%,
      rgba(10, 10, 10, 0.03) 50%,
      rgba(255, 255, 255, 0.75) 60%,
      transparent 100%
    );
  background-size: 220% 100%;
  animation: form-io-sweep 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes form-io-sweep {
  0%   { background-position: 140% 0; opacity: 0; }
  18%  { opacity: 1; }
  68%  { opacity: 1; }
  100% { background-position: -120% 0; opacity: 0; }
}

/* Submit button (mirrors public-form .pf-submit-btn) */
.preview-pane .pf-submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-6);
  min-height: 44px;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--c-accent);
  color: var(--c-ink-inv);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  letter-spacing: -0.01em;
  transition: background 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
  width: 100%;
}

.preview-pane .pf-submit-btn:hover {
  background: var(--c-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.preview-pane .pf-submit-btn:active {
  transform: translateY(0) scale(0.98);
}

/* Status text */
.preview-pane .pf-status {
  font-size: var(--fs-xs);
  color: var(--c-ink-3);
  min-height: 1.2em;
}

/* Footer inside the preview (mirrors public-form .pf-footer) */
.preview-pane .pf-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-5);
  border-top: var(--border);
  background: var(--c-bg);
  flex-shrink: 0;
}

.preview-pane .pf-footer__logo {
  display: flex;
  align-items: center;
  opacity: 0.5;
  transition: opacity 0.18s;
  color: var(--c-ink);
  text-decoration: none;
  justify-self: start;
}

.preview-pane .pf-footer__logo:hover {
  opacity: 0.8;
}

.preview-pane .pf-footer__logo svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.preview-pane .pf-footer__center {
  font-size: var(--fs-2xs);
  color: var(--c-ink-3);
  white-space: nowrap;
  letter-spacing: 0.01em;
  justify-self: center;
}

.preview-pane .pf-footer__right {
  display: flex;
  justify-content: flex-end;
}

.preview-pane .pf-footer__join {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  padding: 0 var(--sp-3);
  min-height: 28px;
  border-radius: var(--r-pill);
  border: var(--border-2);
  background: var(--c-surface);
  color: var(--c-ink-2);
  font-size: var(--fs-2xs);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
}

.preview-pane .pf-footer__join:hover {
  border-color: var(--c-ink-3);
  background: var(--c-ink);
  color: var(--c-ink-inv);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   Form structure: form, sections, header
   -------------------------------------------------------------------------- */

.rendered-form.rf-modern {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
}

.rf-linear-body {
  display: flex;
  flex-direction: column;
}

/* Form header (when rendered inside form — dock preview shows this) */
.rf-form-header {
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-4);
  border-bottom: 2px solid var(--c-line);
}

.rf-form-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  letter-spacing: -0.03em;
  color: var(--c-ink);
  margin-bottom: var(--sp-1);
  line-height: var(--lh-tight);
}

.rf-form-desc {
  color: var(--c-ink-2);
  font-size: var(--fs-sm);
  line-height: var(--lh-base);
  margin: 0;
}

/* Hero image */
.rf-hero {
  width: 100%;
  max-height: 180px;
  overflow: hidden;
  border-radius: var(--r-md);
  margin-bottom: var(--sp-5);
}

.rf-hero-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

/* Section */
.rf-section {
  margin-bottom: var(--sp-6);
  padding: 1rem;
  border: var(--border);
  border-radius: 25px;
  background:
    radial-gradient(circle at top left, rgba(10, 10, 10, 0.06), transparent 34%),
    linear-gradient(135deg, var(--c-accent-soft), var(--c-surface) 62%);
}

.rf-section-header {
  margin-bottom: var(--sp-4);
  padding-left: var(--sp-3);
  border-left: 3px solid var(--c-accent);
}

.rf-section-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: var(--c-ink);
  margin: 0;
}

.rf-section-desc {
  color: var(--c-ink-3);
  font-size: var(--fs-sm);
  margin: var(--sp-1) 0 0;
  line-height: var(--lh-base);
}

.rf-section-fields {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.rf-section-empty {
  text-align: center;
  padding: var(--sp-4);
  color: var(--c-ink-3);
}

/* Section divider (type=section field) */
.rendered-section-divider {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) 0;
}

.section-divider-line {
  flex: 1;
  height: 1px;
  background: var(--c-line);
}

.section-divider-text {
  font-size: var(--fs-2xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-ink-3);
  white-space: nowrap;
}

/* Markdown block */
.rendered-markdown {
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface-2);
  border-radius: var(--r-md);
  border-left: 3px solid var(--c-line-2);
}

.markdown-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--c-ink);
  margin: 0;
}

.markdown-body {
  font-size: var(--fs-sm);
  color: var(--c-ink-2);
  line-height: var(--lh-base);
  margin: var(--sp-1) 0 0;
}

/* --------------------------------------------------------------------------
   Field base
   -------------------------------------------------------------------------- */

.rendered-field,
.choice-field,
.structured-field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.field-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--c-ink);
  line-height: var(--lh-tight);
}

.field-label-sm {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--c-ink-2);
  margin-bottom: var(--sp-1);
  display: block;
}

.field-required {
  color: var(--c-splash-red);
}

.form-help {
  color: var(--c-ink-3);
  font-size: var(--fs-xs);
  line-height: var(--lh-base);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Text inputs, textarea
   -------------------------------------------------------------------------- */

.rf-input,
.rf-textarea {
  width: 100%;
  min-height: 40px;
  border: var(--border-2);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-ink);
  padding: 0 var(--sp-3);
  font-family: inherit;
  font-size: var(--fs-sm);
  line-height: var(--lh-base);
  outline: none;
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-fast);
}

.rf-input:hover,
.rf-textarea:hover {
  border-color: var(--c-ink-3);
}

.rf-input:focus,
.rf-textarea:focus {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-soft), 0 1px 3px rgba(10, 10, 10, 0.06);
  transform: translateY(-1px);
}

.rf-input::placeholder,
.rf-textarea::placeholder {
  color: var(--c-ink-3);
}

.rf-textarea {
  min-height: 96px;
  padding: var(--sp-2) var(--sp-3);
  resize: vertical;
  border-radius: var(--r-md);
}

/* Number with prefix/suffix */
.input-affix-wrap {
  display: flex;
  align-items: center;
  border: var(--border-2);
  border-radius: var(--r-md);
  background: var(--c-surface);
  transition: border-color var(--t-base), box-shadow var(--t-base);
  overflow: hidden;
}

.input-affix-wrap:focus-within {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-soft);
}

.input-prefix,
.input-suffix {
  padding: 0 var(--sp-3);
  color: var(--c-ink-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  background: var(--c-surface-2);
  min-height: 40px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.input-affix-wrap .rf-input {
  border: 0;
  border-radius: 0;
  min-height: 38px;
}

.input-affix-wrap .rf-input:focus {
  box-shadow: none;
  transform: none;
}

/* --------------------------------------------------------------------------
   Custom Select
   -------------------------------------------------------------------------- */

.rf-custom-select {
  position: relative;
  width: 100%;
}

.rf-custom-select__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 40px;
  padding: 0 var(--sp-3);
  border: var(--border-2);
  border-radius: var(--r-pill);
  background: var(--c-surface);
  color: var(--c-ink);
  font-family: inherit;
  font-size: var(--fs-sm);
  cursor: pointer;
  text-align: left;
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-fast);
}

.rf-custom-select__trigger:hover {
  border-color: var(--c-ink-3);
}

.rf-custom-select__trigger:focus,
.rf-custom-select.is-open .rf-custom-select__trigger {
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px var(--c-accent-soft);
  outline: none;
  transform: translateY(-1px);
}

.rf-custom-select__value {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rf-custom-select__placeholder {
  color: var(--c-ink-3);
}

.rf-custom-select__chevron {
  flex-shrink: 0;
  margin-left: var(--sp-2);
  color: var(--c-ink-3);
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.rf-custom-select.is-open .rf-custom-select__chevron {
  transform: rotate(180deg);
}

.rf-custom-select__dropdown {
  position: fixed;
  z-index: 1000;
  background: var(--c-surface);
  border: var(--border-2);
  border-radius: 25px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  overflow-y: auto;
  max-height: 240px;
  transform-origin: top center;
  will-change: transform, opacity;
  animation: cs-drop-in 0.16s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

@keyframes cs-drop-in {
  from { opacity: 0; transform: scaleY(0.92) translateY(-4px); }
  to   { opacity: 1; transform: scaleY(1) translateY(0); }
}

.rf-custom-select__option {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--fs-sm);
  color: var(--c-ink);
  cursor: pointer;
  transition: background var(--t-fast);
  border-left: 2px solid transparent;
}

.rf-custom-select__option:hover,
.rf-custom-select__option.is-focused {
  background: var(--c-surface-hover);
}

.rf-custom-select__option.is-selected {
  background: var(--c-accent-soft);
  border-left-color: var(--c-accent);
  font-weight: var(--fw-medium);
}

.rf-custom-select__option-check {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
  opacity: 0;
  color: var(--c-accent);
}

.rf-custom-select__option.is-selected .rf-custom-select__option-check {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   Choice fields (radio / checkbox)
   -------------------------------------------------------------------------- */

.choice-options {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.choice-option {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  border: var(--border-2);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: border-color var(--t-base), background var(--t-base);
  background: var(--c-surface);
  user-select: none;
}

.choice-option:hover {
  border-color: var(--c-ink-3);
  background: var(--c-surface-hover);
}

.choice-option:has(input:checked) {
  border-color: var(--c-accent);
  background: var(--c-accent-soft);
}

.choice-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.choice-indicator {
  width: 18px;
  height: 18px;
  border: 2px solid var(--c-line-2);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  transition: border-color var(--t-base), background var(--t-base);
}

.choice-option:has(input[type="checkbox"]) .choice-indicator {
  border-radius: var(--r-xs);
}

.choice-option:has(input:checked) .choice-indicator {
  border-color: var(--c-accent);
  background: var(--c-accent);
  animation: rf-pop 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes rf-pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.3); }
  100% { transform: scale(1); }
}

.choice-option:has(input:checked) .choice-indicator::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.choice-option:has(input[type="radio"]:checked) .choice-indicator::after {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-ink-inv);
}

.choice-option:has(input[type="checkbox"]:checked) .choice-indicator::after {
  width: 4px;
  height: 8px;
  border: solid var(--c-ink-inv);
  border-width: 0 2px 2px 0;
  transform: translate(-50%, -60%) rotate(45deg);
}

.choice-text {
  font-size: var(--fs-sm);
  color: var(--c-ink);
}

/* --------------------------------------------------------------------------
   Toggle switch
   -------------------------------------------------------------------------- */

.toggle-switch-row {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  cursor: pointer;
  padding: var(--sp-2) 0;
}

.toggle-switch-wrap {
  position: relative;
  flex-shrink: 0;
}

.toggle-switch-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch-track {
  display: block;
  width: 40px;
  height: 22px;
  border-radius: var(--r-pill);
  background: var(--c-line-2);
  position: relative;
  transition: background var(--t-base);
}

.toggle-switch-input:checked + .toggle-switch-track {
  background: var(--c-splash-green);
}

.toggle-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-ink-inv);
  box-shadow: 0 1px 3px rgba(10, 10, 10, 0.25);
  transition: transform var(--t-base);
}

.toggle-switch-input:checked + .toggle-switch-track .toggle-switch-thumb {
  transform: translateX(18px);
}

.toggle-switch-label {
  font-size: var(--fs-sm);
  color: var(--c-ink);
  line-height: var(--lh-base);
}

/* --------------------------------------------------------------------------
   Star rating
   -------------------------------------------------------------------------- */

.rating-field {
  gap: var(--sp-2);
}

.star-rating {
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-end;
  gap: 2px;
}

.star-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.star-label {
  cursor: pointer;
  color: var(--c-line-2);
  transition: color var(--t-fast), transform var(--t-fast);
}

.star-label:hover,
.star-label:hover ~ .star-label {
  color: #facc15;
  transform: scale(1.15);
}

.star-input:checked ~ .star-label {
  color: #facc15;
}

.star-label svg {
  display: block;
}

/* --------------------------------------------------------------------------
   Slider
   -------------------------------------------------------------------------- */

.slider-field {
  gap: var(--sp-2);
}

.slider-wrap {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.slider-bound {
  font-size: var(--fs-xs);
  color: var(--c-ink-3);
  min-width: 2ch;
  text-align: center;
}

.slider-value {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--c-accent);
  text-align: center;
  min-width: 3ch;
}

.rf-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 5px;
  border-radius: var(--r-pill);
  background: var(--c-line);
  outline: none;
  transition: background var(--t-base);
}

.rf-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(10, 10, 10, 0.2);
  transition: transform var(--t-base), box-shadow var(--t-base);
}

.rf-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 2px 8px rgba(10, 10, 10, 0.25);
}

.rf-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--c-accent);
  cursor: pointer;
  border: 0;
}

/* --------------------------------------------------------------------------
   File upload zone
   -------------------------------------------------------------------------- */

.upload-zone {
  position: relative;
  border: 2px dashed var(--c-line-2);
  border-radius: var(--r-md);
  padding: var(--sp-6) var(--sp-4);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--t-base), background var(--t-base);
  background: var(--c-surface);
}

.upload-zone:hover,
.upload-zone:focus-within {
  border-color: var(--c-accent);
  background: var(--c-accent-soft);
}

.upload-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  color: var(--c-ink-3);
  pointer-events: none;
}

.upload-zone-text {
  font-size: var(--fs-sm);
}

.upload-zone-link {
  color: var(--c-accent);
  font-weight: var(--fw-medium);
  text-decoration: underline;
}

.upload-zone-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   Structured fields (address, name, date_range, location)
   -------------------------------------------------------------------------- */

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

.field-grid-item {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

/* --------------------------------------------------------------------------
   Complex field placeholder
   -------------------------------------------------------------------------- */

.complex-field {
  border: var(--border);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  color: var(--c-ink-3);
  font-size: var(--fs-sm);
  text-align: center;
  border-style: dashed;
}

/* --------------------------------------------------------------------------
   Error states
   -------------------------------------------------------------------------- */

.rendered-field.has-error .rf-input,
.rendered-field.has-error .rf-textarea,
.rendered-field.has-error .rf-custom-select__trigger {
  border-color: var(--c-splash-red);
}

.io-field-error {
  color: var(--c-splash-red);
  font-size: var(--fs-xs);
  margin-top: 2px;
  font-weight: var(--fw-medium);
}

/* --------------------------------------------------------------------------
   I/O widget — dock variant (using --c-* tokens)
   -------------------------------------------------------------------------- */

.io-widget {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  background: var(--c-surface-2);
  border: var(--border);
}

.io-widget__title {
  font-weight: var(--fw-semibold);
  font-size: var(--fs-sm);
  color: var(--c-ink);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.io-widget__title::before {
  content: "✦";
  font-size: 9px;
  opacity: 0.45;
}

.io-widget__prompt {
  min-height: 56px;
  resize: vertical;
  width: 100%;
  border: var(--border-2);
  border-radius: var(--r-sm);
  padding: var(--sp-2) var(--sp-3);
  font-family: inherit;
  font-size: var(--fs-sm);
  background: var(--c-surface);
  color: var(--c-ink);
  transition: border-color var(--t-base);
}

.io-widget__prompt:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 2px var(--c-accent-soft);
}

/* File drop zone inside the I/O widget */
.io-widget__file-zone {
  position: relative;
  align-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  /* width: 200px;
  height: 200px; */
  border: 2px dashed var(--c-line-2);
  border-radius: var(--r-2xl);
  padding: var(--sp-3) var(--sp-4);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--t-base), background var(--t-base);
  background: var(--c-surface);
  overflow: hidden;
}

.io-widget__file-zone::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  z-index: 1;
  background:
    linear-gradient(
      105deg,
      transparent 0%,
      rgba(255, 255, 255, 0.78) 38%,
      rgba(10, 10, 10, 0.06) 50%,
      rgba(255, 255, 255, 0.78) 62%,
      transparent 100%
    );
  background-size: 220% 100%;
}

.io-widget__file-zone.is-analyzing {
  border-color: var(--c-accent);
  background: var(--c-accent-soft);
}

.io-widget__file-zone.is-analyzing::after {
  opacity: 1;
  animation: io-file-zone-sweep 1.25s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.io-widget__file-zone:hover,
.io-widget__file-zone.is-dragover {
  border-color: var(--c-accent);
  background: var(--c-accent-soft);
}

.io-widget__file-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  pointer-events: none;
  transition: filter var(--t-base), opacity var(--t-base), transform var(--t-base);
}

.io-widget__file-zone.is-analyzing .io-widget__file-content,
.io-widget__file-zone.is-analyzing .io-widget__file-list {
  opacity: 0.42;
  filter: blur(1px);
  transform: scale(0.98);
}

.io-widget__file-zone.is-analyzing .io-widget__file-list {
  transform: translate(-50%, -50%) scale(0.98);
}

.io-widget__file-zone.has-files .io-widget__file-content {
  display: none;
}

.io-widget__file-logo.app-brand__logo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 200px;
  height: 200px;
  z-index: 2;
  opacity: 0;
  pointer-events: none;
  cursor: default;
  transform: translate(-50%, -50%) scale(0.84);
  transition: opacity 0.35s ease, transform var(--t-io-logo-enter);
}

.io-widget__file-logo.app-brand__logo::before,
.io-widget__file-logo.app-brand__logo > span {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.io-widget__file-logo.app-brand__logo::before {
  content: "";
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, #1a1a1a 60%, #0a0a0a 100%);
}

.io-widget__file-logo.app-brand__logo > span:nth-child(1) {
  width: 90%;
  height: 90%;
  z-index: 300;
  background: transparent;
  border: 3.5px solid #0a0a0a;
  transform: translate(calc(-50% + 5.17px), calc(-50% + 5.17px));
}

.io-widget__file-logo.app-brand__logo > span:nth-child(2) {
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, #444444 55%, #1a1a1a 100%);
  transform: translate(calc(-50% + 10.39px), calc(-50% + 10.39px));
}

.io-widget__file-logo.app-brand__logo > span:nth-child(3) {
  width: 68%;
  height: 68%;
  background: radial-gradient(circle, #5a5a5a 55%, #444444 100%);
  transform: translate(calc(-50% + 15.56px), calc(-50% + 15.56px));
}

.io-widget__file-logo.app-brand__logo > span:nth-child(4) {
  width: 56%;
  height: 56%;
  background: radial-gradient(circle, #707070 55%, #5a5a5a 100%);
  transform: translate(calc(-50% + 20.72px), calc(-50% + 20.72px));
}

.io-widget__file-logo.app-brand__logo > span:nth-child(5) {
  width: 44%;
  height: 44%;
  background: radial-gradient(circle, #868686 55%, #707070 100%);
  transform: translate(calc(-50% + 25.94px), calc(-50% + 25.94px));
}

.io-widget__file-logo.app-brand__logo > span:nth-child(6) {
  width: 34%;
  height: 34%;
  background: radial-gradient(circle, #9b9b9b 55%, #868686 100%);
  transform: translate(calc(-50% + 31.11px), calc(-50% + 31.11px));
}

.io-widget__file-logo.app-brand__logo > span:nth-child(7) {
  width: 24%;
  height: 24%;
  background: #b5b5b5;
  transform: translate(calc(-50% + 36.28px), calc(-50% + 36.28px));
}

.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.io-widget__file-logo.app-brand__logo::before,
.io-widget__file-logo.app-brand__logo > span {
  animation: none;
}

.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo::before,
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span {
  animation: io-logo-pulse 1.35s ease-in-out infinite;
}

.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(7) { animation-delay: 0s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(6) { animation-delay: 0.08s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(5) { animation-delay: 0.16s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(4) { animation-delay: 0.24s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(3) { animation-delay: 0.32s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(2) { animation-delay: 0.4s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span:nth-child(1) { animation-delay: 0.48s; }
.io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo::before { animation-delay: 0.56s; }

@keyframes io-file-zone-sweep {
  0% { background-position: 145% 0; opacity: 0; }
  16% { opacity: 1; }
  72% { opacity: 1; }
  100% { background-position: -125% 0; opacity: 0; }
}

@keyframes io-logo-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.65); }
}

/* Done: flash + scale-past + fade. Source-ordered AFTER .is-analyzing so it
   wins for the duration of the keyframe. The is-analyzing class is removed
   before is-complete is added (see io-widget.js). */
.io-widget__file-zone.is-complete .io-widget__file-logo.app-brand__logo {
  animation: io-logo-complete var(--t-io-logo-exit) forwards;
}

@keyframes io-logo-complete {
  0%   { opacity: 1; transform: translate(-50%, -50%) scale(1);    filter: brightness(1.9); }
  60%  { opacity: 1; transform: translate(-50%, -50%) scale(1.04); filter: brightness(1.4); }
  100% { opacity: 0; transform: translate(-50%, -50%) scale(0.84); filter: brightness(1);   }
}

.io-widget__file-icon {
  width: 20px;
  height: 20px;
  color: var(--c-ink-3);
  margin-bottom: var(--sp-1);
}

.io-widget__file-text {
  font-size: var(--fs-xs);
  color: var(--c-ink-2);
}

.io-widget__file-link {
  color: var(--c-accent);
  text-decoration: underline;
  font-weight: var(--fw-medium);
}

.io-widget__btn {
  align-self: center;
}

.io-widget__file-hint {
  font-size: var(--fs-2xs);
  color: var(--c-ink-3);
}

.io-widget__file-list {
  display: flex;
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 3;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--sp-1);
  width: calc(100% - var(--sp-6));
  margin-top: 0;
  transform: translate(-50%, -50%);
  transition: filter var(--t-base), opacity var(--t-base), transform var(--t-base);
}

@media (prefers-reduced-motion: reduce) {
  .io-widget__file-zone.is-analyzing::after,
  .io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo::before,
  .io-widget__file-zone.is-analyzing .io-widget__file-logo.app-brand__logo > span,
  .io-widget__file-zone.is-complete .io-widget__file-logo.app-brand__logo {
    animation: none;
  }
  .io-widget__file-zone.is-complete .io-widget__file-logo.app-brand__logo {
    opacity: 0;
    transform: translate(-50%, -50%) scale(1);
  }
}

.io-widget__file-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 2px var(--sp-2);
  border-radius: var(--r-pill);
  background: var(--c-surface-2);
  font-size: var(--fs-2xs);
  color: var(--c-ink-2);
  border: var(--border);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.io-widget__file-chip .io-widget__file-chip-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 0;
  background: transparent;
  color: var(--c-ink-3);
  cursor: pointer;
  padding: 0;
  font-size: 10px;
  line-height: 1;
  flex-shrink: 0;
  transition: background 0.15s ease, color 0.15s ease;
}

.io-widget__file-chip .io-widget__file-chip-remove:hover {
  background: var(--c-ink-3);
  color: var(--c-ink-inv);
}

.io-widget__btn {
  align-self: center;
}

.io-widget__status {
  font-size: var(--fs-xs);
  color: var(--c-ink-3);
  min-height: 1em;
}

/* --------------------------------------------------------------------------
   I/O alternatives — pill chips (dock variant)
   -------------------------------------------------------------------------- */

.io-alts {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
  flex-wrap: wrap;
}

.io-alts__label {
  font-size: var(--fs-2xs);
  font-weight: var(--fw-medium);
  color: var(--c-ink-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-top: 3px;
  flex-shrink: 0;
}

.io-alts__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
}

.io-alts__pill {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--sp-2);
  border-radius: var(--r-pill);
  border: var(--border-2);
  background: var(--c-surface);
  color: var(--c-ink-2);
  font-size: var(--fs-xs);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition:
    border-color var(--t-fast),
    background var(--t-fast),
    color var(--t-fast),
    transform var(--t-fast);
  user-select: none;
}

.io-alts__pill:hover {
  border-color: var(--c-ink-3);
  color: var(--c-ink);
}

.io-alts__pill.is-active {
  border-color: var(--c-accent);
  background: var(--c-accent);
  color: var(--c-ink-inv);
  transform: scale(1.02);
}

/* --------------------------------------------------------------------------
   Slides mode — in-panel (dock preview)
   The slides container fills the available preview host area.
   No full-viewport takeover — contained within the panel.
   -------------------------------------------------------------------------- */

.rf-slides-mode {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.rf-slides-mode .rf-slides-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.rf-slides-mode .rf-slides-container {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Top bar */
.rf-slides-top {
  display: flex;
  flex-direction: column;
}

.rf-slides-progress-bar {
  height: 3px;
  background: var(--c-line);
  overflow: hidden;
}

.rf-slides-progress-fill {
  height: 100%;
  background: var(--c-accent);
  border-radius: 0 var(--r-pill) var(--r-pill) 0;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.rf-slides-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-2) var(--sp-4);
}

.rf-slide-counter {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--c-ink-3);
  letter-spacing: 0.06em;
  font-variant-numeric: tabular-nums;
}

/* Dot navigation */
.rf-dots {
  display: flex;
  gap: var(--sp-1);
  align-items: center;
}

.rf-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--r-pill);
  border: 0;
  background: var(--c-line-2);
  padding: 0;
  cursor: pointer;
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1), background var(--t-base);
}

.rf-dot-active {
  background: var(--c-accent);
  width: 18px;
}

/* Slides — stacked in normal flow */
.rf-slides-mode .rf-slide {
  display: none;
  flex-direction: column;
  position: relative;
  padding: var(--sp-8) var(--sp-6) var(--sp-10);
  overflow-y: auto;
}

.rf-slides-mode .rf-slide.rf-slide-active {
  display: flex;
}

/* Slide section typography */
.rf-slides-mode .rf-section-header {
  margin-bottom: var(--sp-5);
  border-left: none;
  padding-left: 0;
}

.rf-slides-mode .rf-section-title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  letter-spacing: -0.03em;
  color: var(--c-ink);
  margin: 0 0 var(--sp-2);
  line-height: 1.15;
}

.rf-slides-mode .rf-section-desc {
  font-size: var(--fs-md);
  color: var(--c-ink-2);
  line-height: var(--lh-base);
}

.rf-slides-mode .field-label {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
}

.rf-slides-mode .rf-input,
.rf-slides-mode .rf-textarea,
.rf-slides-mode .rf-custom-select__trigger {
  min-height: 48px;
  font-size: var(--fs-md);
}

/* "Press Enter ↵" hint */
.rf-enter-hint {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
  font-size: var(--fs-xs);
  color: var(--c-ink-3);
  opacity: 0;
  animation: rf-fade-up 0.4s 0.8s ease forwards;
}

@keyframes rf-fade-up {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.rf-enter-hint kbd {
  display: inline-flex;
  align-items: center;
  padding: 1px var(--sp-2);
  border: var(--border-2);
  border-bottom-width: 2px;
  border-radius: var(--r-xs);
  background: var(--c-surface);
  font-family: inherit;
  font-size: var(--fs-xs);
  color: var(--c-ink-2);
}

/* Sweep overlay — applied to the active slide */
.rf-slides-mode .rf-slide.rf-slide-active::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      105deg,
      transparent 0%,
      rgba(255, 255, 255, 0.72) 40%,
      rgba(10, 10, 10, 0.025) 50%,
      rgba(255, 255, 255, 0.72) 60%,
      transparent 100%
    ),
    rgba(255, 255, 255, 0.4);
  background-size: 220% 100%;
  animation: form-sweep 0.55s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes form-sweep {
  0%   { background-position: 140% 0; opacity: 0; }
  15%  { opacity: 1; }
  70%  { opacity: 1; }
  100% { background-position: -120% 0; opacity: 0; }
}

/* Slide enter — fade in */
.rf-slides-mode .rf-slide-active {
  animation: rf-slide-in 0.28s ease both;
}

@keyframes rf-slide-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Bottom nav bar */
.rf-slides-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-4);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: var(--border);
}

.rf-slides-nav-left,
.rf-slides-nav-right {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* Nav buttons */
.rf-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-4);
  min-height: 36px;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  transition: background var(--t-base), transform var(--t-fast), box-shadow var(--t-base), opacity var(--t-base);
  font-family: inherit;
}

.rf-prev {
  background: transparent;
  color: var(--c-ink-2);
  border: var(--border-2);
}

.rf-prev:hover:not(:disabled) {
  background: var(--c-surface);
  border-color: var(--c-ink-3);
  color: var(--c-ink);
}

.rf-prev:disabled {
  opacity: 0;
  pointer-events: none;
}

.rf-next {
  background: var(--c-accent);
  color: var(--c-ink-inv);
  border: 0;
  box-shadow: 0 2px 6px rgba(10, 10, 10, 0.2);
}

.rf-next:hover {
  background: var(--c-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10, 10, 10, 0.25);
}

.rf-next:active {
  transform: scale(0.97);
}

.rf-nav-btn svg {
  width: 13px;
  height: 13px;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Success page
   -------------------------------------------------------------------------- */

.rf-success-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-10) var(--sp-6);
  gap: var(--sp-4);
  animation: rf-fade-up 0.4s ease both;
}

.rf-success-icon {
  width: 52px;
  height: 52px;
  color: var(--c-splash-green);
  animation: rf-success-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.rf-success-icon svg {
  width: 100%;
  height: 100%;
}

@keyframes rf-success-pop {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.rf-success-title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--c-ink);
  letter-spacing: -0.02em;
  margin: 0;
}

.rf-success-message {
  font-size: var(--fs-sm);
  color: var(--c-ink-2);
  line-height: var(--lh-base);
  margin: 0;
}