/* Studio: prototype on the left, the one active decision on the right.
   At 390px the active card is a bottom sheet of at most half the viewport.
   No external assets: fixture mode must not touch the network. */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--soft, #F3F2EF);
  color: var(--body, #666666);
  font-family: var(--ui, "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif);
  font-size: 16px;
  line-height: 1.5;
}

body { overflow-x: hidden; }

.studio-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 400px);
  gap: 28px;
  align-items: start;
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 32px 64px;
}

.studio-kicker {
  margin: 0 0 12px;
  font: 600 13px/1.3 var(--ui, sans-serif);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--mute, #666666);
}

.studio-kicker:empty { display: none; }

.studio-lede {
  margin: 0 0 14px;
  max-width: 40em;
  color: var(--ink, #191919);
  overflow-wrap: anywhere;
}

#studio-artifact {
  background: var(--paper, #fff);
  color: var(--ink, #191919);
  border: 1px solid var(--rule, rgba(25, 25, 25, 0.14));
  padding: 22px 22px 28px;
  min-width: 0;
}

/* Release 12: no empty frame before there is a prototype to show (the
   sign-in step drew a blank white box). */
#studio-artifact:empty { display: none; }

#studio-progress {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--mute, #666666);
}

#studio-progress[hidden] { display: none; }

#studio-status {
  margin: 0 0 12px;
  color: var(--ink, #191919);
}
#studio-status[hidden] { display: none; }
.studio-command-retry { margin: -4px 0 12px; font: inherit; padding: 6px 12px; cursor: pointer; }
.studio-command-retry[hidden] { display: none; }

.studio-voice {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 12px;
}
.studio-voice[hidden] { display: none; }
.studio-talk {
  font: 600 15px/1.35 var(--ui, sans-serif);
  color: var(--ink, #191919);
  background: var(--paper, #fff);
  border: 1px solid var(--ink, #191919);
  padding: 8px 14px;
  cursor: pointer;
}
.studio-talk[hidden] { display: none; }
[data-studio-voice-status] { margin: 0; color: var(--ink, #191919); }
[data-studio-voice-status][hidden] { display: none; }
[data-studio-caption] {
  flex-basis: 100%;
  margin: 0;
  color: var(--mute, #666666);
}
[data-studio-caption][hidden] { display: none; }
audio[data-studio-voice-audio] {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.studio-signin {
  margin: 0 0 16px;
  display: grid;
  gap: 8px;
  max-width: 28rem;
}
.studio-signin[hidden] { display: none; }
.studio-signin-lead { margin: 0; }
.studio-signin-label { display: grid; gap: 4px; font-size: 0.92rem; }
.studio-signin-label[hidden] { display: none; }
.studio-signin input { font: inherit; padding: 6px 8px; }
.studio-signin button { font: inherit; padding: 6px 12px; justify-self: start; cursor: pointer; }
.studio-signin button[hidden] { display: none; }
.studio-signin-note { margin: 0; }
.studio-signin-note[hidden] { display: none; }
.studio-signin-error { margin: 0; }
.studio-signin-error[hidden] { display: none; }
.studio-signin-alt { margin: 4px 0 0; font-size: 0.92rem; }

.node { min-width: 0; overflow-wrap: anywhere; }
.node-label { display: block; }
.node-detail { display: block; margin-top: 2px; color: var(--mute, #666666); font-size: 13px; }

.kind-screen > .node-label {
  font: 600 12px/1 var(--ui, sans-serif);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute, #666666);
  margin-bottom: 14px;
}

.kind-nav { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 18px; }
.kind-nav > .node-label { width: 100%; font-size: 12px; color: var(--mute, #666666); }
.kind-nav .kind-text .node-label { font-size: 14px; color: var(--ink, #191919); }

.kind-section { margin-top: 8px; padding-top: 8px; }
.kind-section > .node-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mute, #666666);
  margin-bottom: 8px;
}

.kind-heading .node-label {
  font-family: var(--display, Georgia, "Times New Roman", serif);
  font-weight: 600;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink, #191919);
}

.kind-text .node-label { font-size: 16px; color: var(--body, #666666); max-width: 42em; }

.kind-button {
  display: inline-block;
  margin-top: 14px;
  padding: 10px 16px;
  background: var(--ink, #191919);
  color: var(--paper, #fff);
}
.kind-button .node-label { font-weight: 600; }
.kind-button .node-detail { color: rgba(255, 255, 255, 0.72); }

.kind-image-placeholder {
  border: 1px dashed var(--rule, rgba(25, 25, 25, 0.14));
  min-height: 72px;
  padding: 12px;
  color: var(--mute, #666666);
}

.node-svg { display: block; width: 80px; height: 16px; margin: 6px 0; }
.node-svg line, .node-svg circle { stroke: var(--ink, #191919); fill: none; }

[data-highlight="true"] {
  outline: 2px solid var(--accent, #0A66C2);
  outline-offset: 3px;
  background: color-mix(in srgb, var(--accent, #0A66C2) 10%, var(--paper, #fff));
  animation: studio-pulse 1.4s ease-in-out infinite;
  transition: outline-color 0.2s linear;
}

.kind-button[data-highlight="true"] { background: var(--ink, #191919); }

[data-changed="true"] {
  outline: 2px solid var(--accent, #0A66C2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent, #0A66C2) 32%, transparent);
  animation: studio-settle 2s ease-out 1;
}

@keyframes studio-settle {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent, #0A66C2) 0%, transparent); }
  35% { box-shadow: 0 0 0 8px color-mix(in srgb, var(--accent, #0A66C2) 45%, transparent); }
  100% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent, #0A66C2) 32%, transparent); }
}

@keyframes studio-pulse {
  0%, 100% { outline-color: var(--accent, #0A66C2); }
  50% { outline-color: transparent; }
}

.studio-side { min-width: 0; }

[data-studio-card] {
  background: var(--paper, #fff);
  color: var(--ink, #191919);
  border: 1px solid var(--rule, rgba(25, 25, 25, 0.14));
  padding: 16px 16px 14px;
  margin: 0 0 12px;
  overflow-wrap: anywhere;
}

[data-studio-card][data-active="true"] { border-color: var(--ink, #191919); }

.card-k {
  display: block;
  font: 600 11px/1.2 var(--ui, sans-serif);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute, #666666);
  margin-bottom: 2px;
}

[data-card-scope], [data-card-reason], [data-card-prompt] { margin: 0 0 8px; }
[data-card-prompt] { font-weight: 650; font-size: 18px; line-height: 1.3; color: var(--ink, #191919); }

.card-status {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mute, #666666);
}

.studio-options { display: flex; flex-direction: column; gap: 8px; margin: 10px 0; }

.studio-option, .studio-text-btn, .studio-batch button[type="submit"] {
  font: 600 15px/1.35 var(--ui, sans-serif);
  text-align: left;
  color: var(--ink, #191919);
  background: var(--paper, #fff);
  border: 1px solid var(--rule, rgba(25, 25, 25, 0.14));
  padding: 10px 12px;
  cursor: pointer;
}

.studio-option { display: block; width: 100%; }
.studio-option .opt-label { display: block; }
.studio-option .opt-rec {
  display: inline-block;
  margin-top: 4px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent, #0A66C2);
}
.studio-option .opt-why, .studio-option .opt-cons {
  display: block;
  margin-top: 4px;
  font-weight: 400;
  font-size: 13px;
  color: var(--mute, #666666);
}

.studio-option[data-recommended] { border-color: var(--accent, #0A66C2); }

.card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.studio-text-btn { font-weight: 500; background: transparent; }

.studio-freeform { margin-top: 8px; }
.studio-freeform[hidden] { display: none; }
.studio-freeform input {
  display: block;
  width: 100%;
  margin: 4px 0 8px;
  padding: 8px 10px;
  border: 1px solid var(--rule, rgba(25, 25, 25, 0.14));
  font: 15px/1.4 var(--ui, sans-serif);
  color: var(--ink, #191919);
  background: var(--paper, #fff);
}

.studio-history-label {
  margin: 18px 0 8px;
  font: 600 11px/1 var(--ui, sans-serif);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mute, #666666);
}

.chosen { margin: 0 0 8px; font-weight: 600; color: var(--ink, #191919); }

.studio-batch {
  background: var(--paper, #fff);
  border: 1px solid var(--ink, #191919);
  padding: 14px 14px 12px;
  margin: 0 0 12px;
}

.studio-batch h2 {
  margin: 0 0 10px;
  font: 600 16px/1.3 var(--ui, sans-serif);
  color: var(--ink, #191919);
}

.studio-batch fieldset {
  border: 0;
  margin: 0 0 12px;
  padding: 0;
  min-width: 0;
}

.studio-batch legend {
  font-weight: 650;
  padding: 0;
  margin-bottom: 6px;
  color: var(--ink, #191919);
}

.batch-where, .batch-why { margin: 0 0 6px; font-size: 13px; color: var(--mute, #666666); }

.studio-batch label {
  display: block;
  margin: 0 0 6px;
  padding: 8px 8px;
  border: 1px solid var(--rule, rgba(25, 25, 25, 0.14));
  overflow-wrap: anywhere;
}

.studio-batch label[data-recommended] { border-color: var(--accent, #0A66C2); }

.opt-rec-inline {
  display: inline-block;
  margin-left: 6px;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent, #0A66C2);
}

.studio-batch .opt-why, .studio-batch .opt-cons {
  display: block;
  margin: 2px 0 0 22px;
  font-size: 13px;
  color: var(--mute, #666666);
}

.studio-batch button[type="submit"] { width: 100%; }
.studio-batch button[type="submit"]:disabled { opacity: 0.45; cursor: not-allowed; }

[data-studio-confirm] {
  margin: 0 0 12px;
  padding: 10px 12px;
  background: var(--paper, #fff);
  border-left: 3px solid var(--accent, #0A66C2);
  color: var(--ink, #191919);
  overflow-wrap: anywhere;
}

[data-studio-confirm]:empty { display: none; }

#studio-live {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible { outline: 2px solid var(--accent, #0A66C2); outline-offset: 2px; }

/* Phone: the active card is a bottom sheet. The prototype stays in the top half. */
@media (max-width: 800px) {
  .studio-shell {
    display: block;
    /* Release 9: room below the prototype as tall as the bottom sheet, so
       every part of it can be scrolled above the sheet. */
    padding: 16px 16px 50vh;
  }
  [data-studio-card][data-active="true"] {
    position: fixed;
    z-index: 20;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    max-height: calc(50vh - 2px);
    overflow-x: hidden;
    overflow-y: auto;
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
  }
  /* Release 11: in the sheet the question leads and its context is a
     quiet line each, so the choices start higher and more of them fit. */
  [data-studio-card][data-active="true"] {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
  }
  [data-studio-card][data-active="true"] > [data-card-prompt] {
    order: -1;
    margin: 0 0 4px;
    font-size: 17px;
  }
  [data-studio-card][data-active="true"] > .card-k { display: none; }
  [data-studio-card][data-active="true"] > [data-card-scope],
  [data-studio-card][data-active="true"] > [data-card-reason] {
    margin: 0 0 2px;
    font-size: 13px;
    line-height: 1.35;
    color: var(--mute, #666666);
  }
  [data-studio-card][data-active="true"] .studio-options { gap: 6px; margin: 8px 0 0; }
  [data-studio-card][data-active="true"] .studio-option { padding: 8px 12px; }
  [data-studio-card][data-active="true"] .studio-option .opt-label { display: inline; }
  [data-studio-card][data-active="true"] .studio-option .opt-rec { margin: 0 0 0 6px; }
  [data-studio-card][data-active="true"] .studio-option .opt-why,
  [data-studio-card][data-active="true"] .studio-option .opt-cons { margin-top: 2px; }
  [data-studio-card][data-active="true"] .studio-text-btn { padding: 8px 12px; }
  [data-studio-card][data-active="true"] .card-actions { margin-top: 6px; }
  /* Release 10: the decision form in front is a bottom sheet too, and its
     Submit stays in view while the questions scroll behind it. */
  .studio-batch[data-active="true"] {
    position: fixed;
    z-index: 20;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    max-height: calc(50vh - 2px);
    overflow-x: hidden;
    overflow-y: auto;
    border-left: 0;
    border-right: 0;
    border-bottom: 0;
    padding-bottom: 0;
  }
  .studio-batch[data-active="true"] button[type="submit"] {
    position: sticky;
    bottom: 0;
    margin: 0 -14px;
    width: calc(100% + 28px);
    padding: 14px;
    border-width: 1px 0 0;
    border-color: var(--ink, #191919);
  }
  .studio-batch[data-active="true"] button[type="submit"]:disabled {
    opacity: 1;
    color: var(--mute, #666666);
  }
  .studio-stage { padding-bottom: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-name: none !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-property: none !important;
    transition-duration: 0s !important;
    scroll-behavior: auto !important;
  }
}

/* Release 2: the scripted-walkthrough notice on the bare /studio/ URL. */
.studio-demo { margin: 0 0 12px; padding: 8px 12px; border: 1px dashed currentColor; font-size: 0.92rem; }
.studio-demo[hidden] { display: none; }
.studio-demo-restart { margin-left: 8px; font: inherit; padding: 2px 10px; cursor: pointer; }
.studio-demo-live { margin-left: 10px; font-size: 0.82em; }
.studio-demo-live[hidden] { display: none; }
@media (max-width: 480px) {
  .studio-demo-restart { min-height: 44px; padding: 8px 14px; }
  .studio-demo-live { font-size: 16px; min-height: 44px; display: inline-flex; align-items: center; }
}

/* Release 3: the honest note when the walkthrough has no scripted reply. */
.studio-note { margin: 0 0 12px; padding: 8px 12px; border-left: 3px solid currentColor; font-size: 0.92rem; }
.studio-note[hidden] { display: none; }

/* Release 4: the walkthrough finishes somewhere, with a next step. */
.studio-finish { margin: 0 0 16px; padding: 12px 14px; border: 2px solid var(--accent, #0A66C2); }
.studio-finish[hidden] { display: none; }
.studio-finish p { margin: 0 0 8px; }
.studio-finish p:last-child { margin-bottom: 0; }
.studio-finish-next { font-weight: 600; color: var(--accent, #0A66C2); }

/* Release 7: headings for screen readers, never shown. */
.studio-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; }

/* Release 8: sign out of a live session. */
.studio-signout-row { margin: 0 0 12px; }
.studio-signout-row:not(:has(button:not([hidden]))) { display: none; }