.builder-page .nav-links a.is-active{ color: var(--ink); }

.builder{
  padding: 48px 0 96px;
}

.builder-intro{
  margin-bottom: 36px;
}
.builder-kicker{
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}
.builder-intro h1{
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1.1;
  margin-bottom: 12px;
}
.builder-intro p{
  max-width: 56ch;
  color: var(--muted);
  margin: 0;
  font-size: 17px;
}

.builder-shell{
  display: grid;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.builder-panel{
  display: grid;
  gap: 8px;
  background: #fff;
  border-radius: 14px;
  padding: 18px 18px 22px;
  box-shadow: 0 16px 40px -28px rgba(16,19,28,0.35);
}

.builder-block{
  padding: 8px 4px 14px;
  border-bottom: 1px solid rgba(16,19,28,0.06);
}
.builder-block h2,
.block-head h2,
.builder-fold > summary,
.fold-label{
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  font-weight: 600;
}
.fold-label{
  margin: 14px 0 8px;
  font-size: 11px;
}
.fold-hint{
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--muted);
}
.fold-toolbar{
  display: flex;
  justify-content: flex-end;
  margin: -4px 0 8px;
}

.builder-fold{
  border-bottom: 1px solid rgba(16,19,28,0.06);
  padding: 4px 4px 14px;
}
.builder-fold > summary{
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 8px 0;
  color: var(--ink);
  user-select: none;
}
.builder-fold > summary::-webkit-details-marker{ display: none; }
.builder-fold > summary::after{
  content: '';
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: rotate(-45deg);
  transition: transform .18s ease;
  flex-shrink: 0;
}
.builder-fold[open] > summary::after{ transform: rotate(45deg); }
.builder-fold > summary .text-btn{ text-transform: none; letter-spacing: 0; }

.chip-row{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chip{
  appearance: none;
  border: 1.5px solid rgba(16,19,28,0.12);
  background: var(--bg);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 13.5px;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.chip:hover{ border-color: var(--ink); }
.chip.is-on{
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.chip.swatch{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 8px;
}
.chip .swatch-dot{
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(16,19,28,0.15);
  box-shadow: inset 0 0 0 2px #fff;
}
.chip.fonts{ border-radius: 8px; }

.color-row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 4px;
}
.color-row label{
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
.color-row input[type="color"]{
  width: 100%;
  height: 40px;
  padding: 4px;
  border-radius: 8px;
  background: var(--bg);
  cursor: pointer;
}

.toggle-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.toggle{
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  background: var(--bg);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}
.toggle input{ margin: 0; }

.builder-panel .field{ margin-bottom: 12px; }
.builder-panel .field:last-child{ margin-bottom: 0; }
.builder-panel input,
.builder-panel textarea{
  background: var(--bg);
  width: 100%;
}

.text-btn{
  background: none;
  border: none;
  color: var(--ink);
  font: 500 13px 'Inter', sans-serif;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 0;
}
.text-btn:hover{ color: var(--accent); }
.text-btn:disabled{ opacity: 0.4; cursor: not-allowed; text-decoration: none; }

.items-list{ display: grid; gap: 10px; }
.item-card{
  display: grid;
  gap: 8px;
  padding: 10px;
  background: var(--bg);
  border-radius: 10px;
}
.item-card .item-row{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}
.item-card input,
.item-card textarea{
  background: #fff;
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
}
.item-remove{
  width: 36px;
  height: 42px;
  border: none;
  background: var(--accent-soft);
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  font-size: 18px;
  line-height: 1;
}
.item-remove:hover{ background: #eadad6; color: #7a2f24; }

.builder-actions{
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 4px 4px;
}
.builder-actions .btn{ justify-content: center; width: 100%; }

.builder-preview{ position: sticky; top: 88px; }
.preview-toolbar{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.viewport-toggle{
  display: inline-flex;
  background: #fff;
  border-radius: 8px;
  padding: 4px;
  gap: 2px;
}
.viewport-toggle button{
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font: 500 13px 'Inter', sans-serif;
  padding: 7px 12px;
  border-radius: 6px;
  cursor: pointer;
}
.viewport-toggle button.is-on{
  background: var(--ink);
  color: #fff;
}
.preview-hint{ font-size: 12px; color: var(--muted); }

.preview-stage{
  background: transparent;
}
.preview-chrome{
  background: var(--ink);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 60px -20px rgba(16,19,28,0.4);
}
.preview-chrome .editor-bar{ background: var(--ink); }
.preview-chrome iframe{
  display: block;
  width: 100%;
  height: 720px;
  border: 0;
  background: #fff;
}

.preview-stage[data-viewport="tablet"],
.preview-stage[data-viewport="phone"]{
  display: flex;
  justify-content: center;
}
.preview-stage[data-viewport="tablet"] .preview-chrome{
  width: 768px;
  max-width: 100%;
}
.preview-stage[data-viewport="phone"] .preview-chrome{
  width: 375px;
  max-width: 100%;
}
.preview-stage[data-viewport="tablet"] iframe,
.preview-stage[data-viewport="phone"] iframe{
  height: 640px;
}

.preview-note{
  font-size: 13.5px;
  color: var(--muted);
  margin: 14px 0 0;
}

.builder-dock{
  display: none;
  position: sticky;
  bottom: 0;
  padding: 12px 20px calc(12px + env(safe-area-inset-bottom));
  background: rgba(243,241,233,0.94);
  backdrop-filter: blur(8px);
  box-shadow: 0 -1px 0 rgba(16,19,28,0.08);
  z-index: 15;
}
.builder-dock .btn{ width: 100%; justify-content: center; }

@media (max-width: 980px){
  .builder-shell{ grid-template-columns: 1fr; }
  .builder-preview{ position: static; }
  .preview-chrome iframe{ height: 520px; }
  .desktop-actions{ display: none; }
  .builder-dock{ display: block; }
  .builder{ padding-bottom: 24px; }
}

@media (max-width: 680px){
  .nav-try{ display: none; }
  .toggle-grid{ grid-template-columns: 1fr; }
  .preview-hint{ display: none; }
  .builder{ padding-top: 32px; }
  .viewport-toggle button{ padding: 7px 8px; font-size: 12px; }
}

@media (prefers-reduced-motion: reduce){
  .chip, .btn, .item-remove, .builder-fold > summary::after{ transition: none; }
}