.sb-shell {
  --sb-ink: #2b211d;
  --sb-muted: #74665f;
  --sb-line: #e8ded6;
  --sb-paper: #fffdfb;
  --sb-cream: #f7f0e9;
  --sb-accent: #ff2d78;
  color: var(--sb-ink);
}

.sb-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}
.sb-eyebrow {
  color: var(--sb-accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.sb-header h2 { margin: 4px 0 4px; font-size: clamp(22px, 3vw, 32px); }
.sb-header p { margin: 0; color: var(--sb-muted); max-width: 680px; }
.sb-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.sb-btn {
  appearance: none;
  border: 1px solid var(--sb-line);
  border-radius: 10px;
  background: #fff;
  color: var(--sb-ink);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 750;
  padding: 10px 13px;
}
.sb-btn:hover { border-color: #c9b7aa; background: #fffaf6; }
.sb-btn:disabled { cursor: wait; opacity: .55; }
.sb-btn--primary { background: var(--sb-ink); border-color: var(--sb-ink); color: #fff; }
.sb-btn--pink { background: var(--sb-accent); border-color: var(--sb-accent); color: #fff; }
.sb-btn--danger { color: #9b2c2c; }
.sb-btn--tiny { padding: 6px 8px; border-radius: 8px; font-size: 11px; }

.sb-notice {
  background: #fff9ea;
  border: 1px solid #ecd9a6;
  border-radius: 12px;
  color: #6c5324;
  font-size: 13px;
  margin-bottom: 16px;
  padding: 11px 13px;
}
.sb-notice strong { color: #4c3815; }
.sb-status { min-height: 22px; color: var(--sb-muted); font-size: 13px; margin: 0 0 10px; }
.sb-status.is-error { color: #a32222; }
.sb-status.is-ok { color: #17663c; }

.sb-workspace {
  display: grid;
  grid-template-columns: minmax(380px, 1.12fr) minmax(340px, .88fr);
  gap: 18px;
  align-items: start;
}
.sb-side {
  display: grid;
  gap: 14px;
  min-width: 0;
  position: sticky;
  top: 16px;
}
.sb-panel {
  background: #fff;
  border: 1px solid var(--sb-line);
  border-radius: 16px;
  box-shadow: 0 8px 28px rgba(75, 52, 42, .06);
  min-width: 0;
}
.sb-editor { overflow: hidden; }
.sb-editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--sb-line);
  padding: 14px 16px;
}
.sb-steps { display: flex; gap: 7px; flex-wrap: wrap; }
.sb-step {
  background: #f6f2ef;
  border: 0;
  border-radius: 999px;
  color: #796b64;
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
  padding: 7px 10px;
}
.sb-step.is-active { background: var(--sb-ink); color: #fff; }
.sb-step:disabled { cursor: default; opacity: .4; }
.sb-tab {
  background: transparent;
  border: 1px solid var(--sb-line);
  border-radius: 999px;
  color: #796b64;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  padding: 7px 12px;
}
.sb-tab.is-active { background: var(--sb-cream); border-color: #c9b7aa; color: var(--sb-ink); }
.sb-tab:disabled { cursor: default; opacity: .4; }
.sb-editor-body { min-height: 540px; padding: 14px; }
.sb-empty {
  display: grid;
  place-items: center;
  min-height: 500px;
  padding: 38px;
  text-align: center;
}
.sb-empty-inner { max-width: 430px; }
.sb-empty-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  margin: 0 auto 14px;
  background: var(--sb-cream);
  font-size: 27px;
}
.sb-empty h3 { margin: 0 0 7px; font-size: 20px; }
.sb-empty p { color: var(--sb-muted); margin: 0 0 17px; }

.sb-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}
.sb-toolbar h3 { margin: 0; font-size: 17px; }
.sb-count { color: var(--sb-muted); font-size: 12px; }
.sb-list { display: grid; gap: 9px; }
.sb-row {
  background: var(--sb-paper);
  border: 1px solid var(--sb-line);
  border-radius: 12px;
  padding: 11px;
}
.sb-row[draggable="true"] { cursor: grab; }
.sb-row.is-dragging { opacity: .4; }
.sb-row.is-drop { outline: 2px solid var(--sb-accent); outline-offset: 2px; }
.sb-row.is-selected { border-color: #b59b8d; box-shadow: inset 3px 0 var(--sb-ink); }
.sb-row.is-inactive { opacity: .62; }
.sb-row.is-removed { opacity: .48; background: #f5f5f5; }
.sb-row-top { display: flex; gap: 8px; align-items: center; }
.sb-grip { color: #ae9c92; font-weight: 900; letter-spacing: -2px; user-select: none; }
.sb-row-name {
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  color: var(--sb-ink);
  flex: 1;
  font: inherit;
  font-weight: 750;
  min-width: 70px;
  padding: 3px 2px;
}
.sb-row-name:focus { border-bottom-color: var(--sb-accent); outline: 0; }
.sb-row-meta { color: var(--sb-muted); font-size: 11px; margin: 5px 0 0 24px; }
.sb-row-meta select {
  max-width: 180px;
  border: 1px solid var(--sb-line);
  border-radius: 6px;
  background: #fff;
  color: var(--sb-ink);
  font: inherit;
  padding: 3px 5px;
}
.sb-row-actions { display: flex; align-items: center; gap: 5px; }
.sb-row--source { background: #fcfaf8; border-style: dashed; cursor: default; }
.sb-row--source .sb-row-meta { margin-left: 0; }
.sb-row--editable { background: #fff; }
.sb-row--editable .sb-fields { margin-top: 8px; }
.sb-edit-hint {
  background: #f4faf6;
  border: 1px solid #cfe8d7;
  border-radius: 10px;
  color: #2f6b48;
  font-size: 12px;
  margin: 0 0 12px;
  padding: 8px 10px;
}
.sb-source-name { flex: 1; font-size: 13px; min-width: 90px; }
.sb-pill {
  background: #eaf7ee;
  border: 1px solid #b9e0c6;
  border-radius: 999px;
  color: #1d6b3f;
  font-size: 10px;
  font-weight: 850;
  padding: 3px 7px;
  white-space: nowrap;
}
.sb-lib-toolbar {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.sb-search {
  flex: 1;
  min-width: 180px;
  border: 1px solid var(--sb-line);
  border-radius: 9px;
  background: #fff;
  color: var(--sb-ink);
  font: inherit;
  font-size: 13px;
  padding: 8px 10px;
}
.sb-lib-toolbar select {
  border: 1px solid var(--sb-line);
  border-radius: 7px;
  background: #fff;
  color: var(--sb-ink);
  font: inherit;
  font-size: 12px;
  max-width: 190px;
  padding: 5px 6px;
}
.sb-check { display: inline-flex; align-items: center; gap: 4px; color: var(--sb-muted); font-size: 11px; }
.sb-check input { accent-color: var(--sb-accent); }
.sb-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  margin-top: 10px;
}
.sb-field { min-width: 0; }
.sb-field--wide { grid-column: 1 / -1; }
.sb-field label { display: block; color: var(--sb-muted); font-size: 10px; font-weight: 800; margin-bottom: 4px; text-transform: uppercase; letter-spacing: .05em; }
.sb-field input,
.sb-field textarea,
.sb-field select {
  width: 100%;
  border: 1px solid #d7cbc2;
  border-radius: 8px;
  background: #fff;
  color: var(--sb-ink);
  font: inherit;
  font-size: 13px;
  padding: 9px 10px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7);
}
.sb-field input:focus,
.sb-field textarea:focus,
.sb-field select:focus {
  border-color: var(--sb-accent);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(255, 45, 120, .12);
}
.sb-field--wide input,
.sb-field--wide textarea { font-weight: 650; }
.sb-field textarea { min-height: 65px; resize: vertical; }
.sb-back { color: var(--sb-muted); font-size: 12px; margin-bottom: 10px; }
.sb-back button { border: 0; background: none; color: var(--sb-accent); cursor: pointer; font-weight: 800; padding: 0; }
.sb-group {
  border: 1px solid var(--sb-line);
  border-radius: 13px;
  margin-bottom: 11px;
  overflow: hidden;
}
.sb-group-head { background: #faf6f2; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 10px 12px; }
.sb-group-title { font-size: 13px; font-weight: 850; }
.sb-group-body { display: grid; gap: 7px; padding: 9px; }

.sb-preview-wrap { overflow: hidden; }
.sb-preview-toolbar {
  align-items: center;
  border-bottom: 1px solid var(--sb-line);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
}
.sb-preview-toolbar strong { font-size: 13px; }
.sb-preview-toolbar span { color: var(--sb-muted); font-size: 11px; }
.sb-book {
  background: #f6efe8;
  min-height: 420px;
  padding: 24px 22px 28px;
}
.sb-book-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  margin: 0 0 36px;
  text-align: center;
}
.sb-availability {
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 14px;
  background: #fff8f2;
  border: 1px solid #e9cdbd;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(73, 48, 38, .06);
  color: #675149;
  font-size: 12px;
  font-weight: 750;
  padding: 8px 12px;
  text-align: center;
}
.sb-progress { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; margin: 0 0 9px; }
.sb-progress i { height: 3px; border-radius: 4px; background: #ded5cf; }
.sb-progress i:first-child { background: var(--sb-ink); }
.sb-progress-label { font-size: 12px; font-weight: 750; text-align: center; margin-bottom: 27px; color: #66534b; }
.sb-preview-intro { color: #5d514c; font-size: 13px; margin: 0 0 13px; }
.sb-preview-list { display: grid; gap: 9px; }
.sb-preview-card {
  background: #fff;
  border: 1px solid #e1d7d0;
  border-radius: 9px;
  color: #27211e;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  min-height: 51px;
  padding: 12px 14px;
  text-align: left;
  width: 100%;
}
.sb-preview-card small { color: #887970; font-weight: 600; }
.sb-preview-card.is-picked { border-color: #76675f; }
.sb-preview-group {
  background: rgba(255,255,255,.72);
  border-left: 3px solid var(--sb-ink);
  border-radius: 6px;
  margin: 10px 0;
  padding: 10px;
}
.sb-preview-group summary { cursor: pointer; font-size: 12px; font-weight: 850; }
.sb-preview-options { display: grid; gap: 7px; margin-top: 9px; }
.sb-preview-option { display: flex; align-items: flex-start; gap: 7px; font-size: 12px; }
.sb-preview-option input { accent-color: var(--sb-ink); margin-top: 2px; }
.sb-preview-option span:last-child { margin-left: auto; color: #786960; white-space: nowrap; }
.sb-continue {
  width: 100%;
  border: 0;
  border-radius: 8px;
  background: #796d66;
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  margin-top: 18px;
  padding: 14px;
}
.sb-continue.is-ready { background: var(--sb-ink); }
.sb-preview-error { color: #a33b25; font-size: 11px; margin: 8px 0 0; text-align: center; }

.sb-ai {
  border-top: 1px solid var(--sb-line);
  margin-top: 16px;
  padding-top: 14px;
}
.sb-ai h4 { margin: 0 0 4px; }
.sb-ai p { color: var(--sb-muted); font-size: 12px; margin: 0 0 9px; }
.sb-ai textarea { width: 100%; min-height: 72px; border: 1px solid var(--sb-line); border-radius: 9px; padding: 9px; font: inherit; }
.sb-ai-result { background: #fff7fb; border: 1px solid #ffd1e3; border-radius: 10px; font-size: 12px; margin-top: 10px; padding: 10px; white-space: pre-wrap; }
.sb-combos { max-height: 360px; overflow: auto; }
.sb-combo { border-bottom: 1px solid var(--sb-line); font-size: 12px; padding: 7px 2px; }

.sb-chat-wrap { overflow: hidden; display: flex; flex-direction: column; min-height: 420px; max-height: min(70vh, 640px); }
.sb-chat-head {
  align-items: center;
  border-bottom: 1px solid var(--sb-line);
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  flex-shrink: 0;
}
.sb-chat-head strong { font-size: 13px; }
.sb-chat-head span { color: var(--sb-muted); font-size: 11px; }
.sb-chat-body {
  flex: 1 1 auto;
  min-height: 220px;
  overflow: auto;
  padding: 12px 14px;
  display: grid;
  gap: 12px;
  align-content: start;
  background: linear-gradient(180deg, #fbf8f5, #f7f1eb);
}
.sb-chat-empty { color: var(--sb-muted); font-size: 12px; margin: 0; line-height: 1.45; }
.sb-chat-msg { display: grid; gap: 4px; max-width: 100%; }
.sb-chat-msg--user { justify-items: end; }
.sb-chat-msg--assistant { justify-items: start; }
.sb-chat-role {
  color: var(--sb-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.sb-chat-bubble {
  border-radius: 12px;
  font-size: 12.5px;
  line-height: 1.45;
  padding: 9px 11px;
  white-space: pre-wrap;
  max-width: 96%;
}
.sb-chat-bubble--user {
  background: var(--sb-ink);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.sb-chat-bubble--assistant {
  background: #fff;
  border: 1px solid var(--sb-line);
  color: var(--sb-ink);
  border-bottom-left-radius: 4px;
}
.sb-chat-meta {
  color: #2f6b48;
  font-size: 10px;
  font-weight: 700;
}
.sb-chat-time {
  color: #9a8b82;
  font-size: 10px;
}
.sb-chat-compose {
  border-top: 1px solid var(--sb-line);
  padding: 10px 12px 12px;
  background: #fff;
  flex-shrink: 0;
}
.sb-chat-compose textarea {
  width: 100%;
  min-height: 92px;
  border: 1px solid #d7cbc2;
  border-radius: 10px;
  font: inherit;
  font-size: 13px;
  line-height: 1.4;
  padding: 10px 11px;
  resize: vertical;
  color: var(--sb-ink);
}
.sb-chat-compose textarea:focus {
  border-color: var(--sb-accent);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(255, 45, 120, .12);
}
.sb-chat-actions {
  display: flex;
  gap: 7px;
  justify-content: flex-end;
  align-items: center;
  margin-top: 8px;
  flex-wrap: wrap;
}

@media (max-width: 1050px) {
  .sb-workspace { grid-template-columns: 1fr; }
  .sb-side { position: static; }
}
@media (max-width: 640px) {
  .sb-header { flex-direction: column; }
  .sb-actions { justify-content: flex-start; }
  .sb-editor-body { padding: 10px; }
  .sb-fields { grid-template-columns: 1fr; }
  .sb-field--wide { grid-column: auto; }
  .sb-book { padding: 20px 14px 24px; }
  .sb-row-top { align-items: flex-start; flex-wrap: wrap; }
  .sb-row-actions { width: 100%; margin-left: 0; }
  .sb-chat-wrap { max-height: none; }
}