.ctb-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
}

/* ── Step indicator ─────────────────────────────────────────────────────────── */

.ctb-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 2rem;
  flex-wrap: nowrap;
  overflow-x: auto;
}

.ctb-step-dot {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--ct-surface-2);
  color: var(--ct-text-dim);
  border: 2px solid var(--ct-border);
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  cursor: default;
}

.ctb-step-dot.is-active {
  background: var(--ct-accent);
  color: var(--ct-bg);
  border-color: var(--ct-accent);
}

.ctb-step-dot.is-done {
  background: var(--ct-accent-2);
  color: var(--ct-bg);
  border-color: var(--ct-accent-2);
}

.ctb-step-line {
  flex: 1;
  height: 2px;
  background: var(--ct-border);
  min-width: 0.5rem;
}

/* ── Theme summary ──────────────────────────────────────────────────────────── */

.ctb-theme-summary {
  background: var(--ct-surface);
  border: 1px solid var(--ct-border);
  border-left: 3px solid var(--ct-accent);
  border-radius: var(--ct-radius-sm);
  padding: 0.6rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.82rem;
  color: var(--ct-text-dim);
  line-height: 1.5;
}

.ctb-theme-summary strong {
  color: var(--ct-text);
}

/* ── Step content ───────────────────────────────────────────────────────────── */

.ctb-step-content {
  min-height: 380px;
}

.ctb-step-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ct-text);
  margin-bottom: 0.3rem;
}

.ctb-step-sub {
  color: var(--ct-text-dim);
  font-size: 0.88rem;
  margin-bottom: 1.75rem;
  line-height: 1.5;
}

/* ── Fields ─────────────────────────────────────────────────────────────────── */

.ctb-field {
  margin-bottom: 1.25rem;
}

.ctb-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ct-text);
  margin-bottom: 0.35rem;
}

.ctb-eg {
  color: var(--ct-text-dim);
  font-weight: 400;
  font-size: 0.8rem;
  display: block;
  margin-top: 0.1rem;
  line-height: 1.4;
}

.ctb-input,
.ctb-textarea {
  width: 100%;
  box-sizing: border-box;
  background: var(--ct-surface-2);
  border: 1px solid var(--ct-border);
  color: var(--ct-text);
  border-radius: var(--ct-radius-sm);
  padding: 0.5rem 0.75rem;
  font-family: var(--ct-font);
  font-size: 0.88rem;
  transition: border-color 0.1s;
}

.ctb-textarea {
  min-height: 110px;
  resize: vertical;
  line-height: 1.5;
}

.ctb-input:focus,
.ctb-textarea:focus {
  outline: none;
  border-color: var(--ct-accent);
}

.ctb-input::placeholder,
.ctb-textarea::placeholder {
  color: var(--ct-text-dim);
  opacity: 0.6;
}

/* ── Tone chips ─────────────────────────────────────────────────────────────── */

.ctb-tone-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.ctb-chip-toggle {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--ct-border);
  background: var(--ct-surface-2);
  color: var(--ct-text-dim);
  font-family: var(--ct-font);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.ctb-chip-toggle.is-on {
  background: var(--ct-accent);
  color: var(--ct-bg);
  border-color: var(--ct-accent);
}

/* ── AI toggle ──────────────────────────────────────────────────────────────── */

.ctb-ai-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  background: var(--ct-surface);
  border: 1px dashed var(--ct-border);
  border-radius: var(--ct-radius-sm);
  font-size: 0.82rem;
  color: var(--ct-text-dim);
  cursor: pointer;
  transition: border-color 0.1s, color 0.1s;
  user-select: none;
}

.ctb-ai-row input[type="checkbox"] {
  cursor: pointer;
  accent-color: var(--ct-accent);
}

.ctb-ai-row.is-on {
  border-color: var(--ct-accent);
  color: var(--ct-accent);
}

/* ── Path picker (step 0) ───────────────────────────────────────────────────── */

.ctb-path-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.ctb-path-card {
  border: 2px solid var(--ct-border);
  border-radius: var(--ct-radius);
  padding: 1.5rem 1rem;
  text-align: center;
  cursor: pointer;
  background: var(--ct-surface);
  transition: border-color 0.15s, background 0.15s;
}

.ctb-path-card:hover {
  border-color: var(--ct-accent);
}

.ctb-path-card.is-selected {
  border-color: var(--ct-accent);
  background: var(--ct-surface-2);
}

.ctb-path-card-title {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--ct-text);
}

.ctb-path-card-sub {
  font-size: 0.8rem;
  color: var(--ct-text-dim);
  line-height: 1.4;
}

/* ── Item list (step 3) ─────────────────────────────────────────────────────── */

.ctb-item-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.ctb-item-row {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.ctb-item-num {
  width: 1.75rem;
  text-align: right;
  color: var(--ct-text-dim);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.ctb-item-row .ctb-input {
  flex: 1;
  min-width: 0;
}

.ctb-item-row .ct-btn {
  width: 2rem;
  height: 2rem;
  padding: 0;
  flex-shrink: 0;
  font-size: 0.85rem;
  line-height: 1;
}

.ctb-count-badge {
  font-size: 0.82rem;
  margin-bottom: 0.75rem;
  color: var(--ct-text-dim);
}

.ctb-count-badge.is-ok    { color: var(--ct-accent-2); }
.ctb-count-badge.is-short { color: var(--ct-danger); }

/* ── Upgrade rows (steps 7/8) ───────────────────────────────────────────────── */

.ctb-upgrade-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.ctb-upgrade-row {
  background: var(--ct-surface);
  border: 1px solid var(--ct-border);
  border-radius: var(--ct-radius-sm);
  padding: 0.75rem;
}

.ctb-upgrade-row-header {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ct-text-dim);
  margin-bottom: 0.5rem;
}

.ctb-upgrade-fields {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.ctb-upgrade-fields .ctb-input {
  font-size: 0.83rem;
}

/* ── Review (step 9) ────────────────────────────────────────────────────────── */

.ctb-review-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1.5rem;
}

.ctb-review-section {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--ct-border);
}

.ctb-review-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ct-text-dim);
  margin-bottom: 0.2rem;
}

.ctb-review-value {
  font-size: 0.88rem;
  color: var(--ct-text);
  line-height: 1.4;
}

.ctb-review-ai {
  font-size: 0.78rem;
  background: var(--ct-surface);
  border: 1px dashed var(--ct-border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  color: var(--ct-accent);
}

.ctb-review-missing {
  color: var(--ct-danger);
  font-size: 0.82rem;
}

.ctb-generate-btn {
  width: 100%;
  padding: 0.8rem;
  font-size: 1rem;
  margin-top: 0.5rem;
}

/* ── Done screen ────────────────────────────────────────────────────────────── */

.ctb-done {
  text-align: center;
  padding: 2rem 0;
}

.ctb-done-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.ctb-done p {
  color: var(--ct-text-dim);
  max-width: 480px;
  margin: 0 auto 0.75rem;
  line-height: 1.6;
  font-size: 0.9rem;
}

/* ── Nav ────────────────────────────────────────────────────────────────────── */

.ctb-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ct-border);
}

.ctb-error {
  flex: 1;
  text-align: center;
  padding: 0 1rem;
  color: var(--ct-danger);
  font-size: 0.85rem;
}

/* Appearance: background image + colour scheme */
.ctb-subhead {
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ct-text);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--ct-border);
}

.ctb-color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.6rem;
  margin-top: 0.3rem;
}
.ctb-color-cell {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}
.ctb-color-input {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--ct-border);
  border-radius: var(--ct-radius-sm);
  background: none;
  cursor: pointer;
  flex-shrink: 0;
}
.ctb-color-input::-webkit-color-swatch-wrapper { padding: 2px; }
.ctb-color-input::-webkit-color-swatch { border: none; border-radius: 5px; }
.ctb-color-label { font-size: 0.82rem; color: var(--ct-text-dim); }

.ctb-text-btn {
  margin-top: 0.75rem;
  background: none;
  border: none;
  color: var(--ct-accent);
  font-size: 0.82rem;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

@media (max-width: 600px) {
  .ctb-path-grid { grid-template-columns: 1fr; }
  .ctb-review-grid { grid-template-columns: 1fr; }
}