/* ── Design Builder — Sprint 8 ─────────────────────────────── */

/* Override page padding — builder is full-viewport */
.df-main { padding-top: 0; }

/* ── Layout ──────────────────────────────────────────────────── */
.df-builder {
  display: grid;
  grid-template-columns: 280px 1fr 260px;
  grid-template-rows: calc(100vh - var(--df-nav-h));
  margin-top: var(--df-nav-h);
  background: var(--df-bg);
  overflow: hidden;
  position: relative;
}

/* Sidebar shared */
.df-builder__sidebar,
.df-builder__order {
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--df-border) transparent;
  border-right: 1px solid var(--df-border);
  padding: 1.5rem 1.25rem 2rem;
}
.df-builder__order {
  border-right: none;
  border-left: 1px solid var(--df-border);
}
.df-builder__sidebar-inner { display: flex; flex-direction: column; gap: 1.5rem; }

/* ── Block section ───────────────────────────────────────────── */
.df-bs { display: flex; flex-direction: column; gap: .55rem; }
.df-bs__label {
  font-family: var(--df-font-b);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--df-muted);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.df-bs__label-val {
  color: var(--df-ink);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
}
.df-bs--row { flex-direction: row; align-items: center; justify-content: space-between; }

/* ── Product tabs ────────────────────────────────────────────── */
.df-builder__product-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.df-ptab {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--df-muted);
  border: 1px solid var(--df-border);
  border-radius: 3px;
  padding: .35rem .7rem;
  background: none;
  cursor: pointer;
  transition: color .2s, border-color .2s, background .2s;
}
.df-ptab:hover { color: var(--df-ink); border-color: rgba(255,255,255,.2); }
.df-ptab.is-active { color: var(--df-gold); border-color: var(--df-gold); background: rgba(200,150,62,.08); }

/* ── Colour swatches ─────────────────────────────────────────── */
.df-color-swatches { display: flex; flex-wrap: wrap; gap: .5rem; }
.df-color-swatch {
  width: 26px; height: 26px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color .2s, transform .2s;
  position: relative;
}
.df-color-swatch:hover { transform: scale(1.15); }
.df-color-swatch.is-active { border-color: var(--df-gold); }
.df-color-swatch.is-active::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--df-gold);
}

/* ── Print area tabs ─────────────────────────────────────────── */
.df-area-tabs { display: flex; gap: .4rem; }
.df-area-btn {
  font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--df-muted); border: 1px solid var(--df-border); border-radius: 3px;
  padding: .3rem .8rem; background: none; cursor: pointer;
  transition: color .2s, border-color .2s;
}
.df-area-btn:hover { color: var(--df-ink); }
.df-area-btn.is-active { color: var(--df-gold); border-color: var(--df-gold); }

/* ── Drop zone ───────────────────────────────────────────────── */
.df-drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: 1.5px dashed var(--df-border);
  border-radius: 6px;
  padding: 1.5rem 1rem;
  cursor: pointer;
  text-align: center;
  color: var(--df-muted);
  transition: border-color .2s, background .2s;
  min-height: 120px;
}
.df-drop-zone:hover,
.df-drop-zone.is-over { border-color: var(--df-gold); background: rgba(200,150,62,.05); color: var(--df-ink); }
.df-drop-zone p { font-size: .82rem; margin: 0; }
.df-drop-zone__browse {
  font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: var(--df-gold); cursor: pointer; text-decoration: underline;
}
.df-upload-hint { font-size: .68rem; color: var(--df-muted); text-align: center; margin: 0; }
.df-upload-progress {
  height: 3px; background: var(--df-border); border-radius: 2px;
  overflow: hidden; display: none;
}
.df-upload-progress.is-active { display: block; }
.df-upload-progress__bar {
  height: 100%; width: 0; background: var(--df-gold);
  transition: width .3s;
}

/* ── Design library ──────────────────────────────────────────── */
.df-design-library {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .4rem;
}
.df-design-item {
  aspect-ratio: 1;
  border: 1.5px solid var(--df-border);
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  background: var(--df-bg2);
  transition: border-color .2s, transform .2s;
  display: flex; align-items: center; justify-content: center;
}
.df-design-item:hover { border-color: var(--df-gold); transform: scale(1.05); }
.df-design-item.is-active { border-color: var(--df-gold); }
.df-design-item img,
.df-design-item svg { width: 100%; height: 100%; object-fit: contain; padding: 6px; }

/* Remove artwork */
.df-bs__remove-art {
  font-size: .72rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
  color: #c0392b; background: none; border: 1px solid #c0392b; border-radius: 3px;
  padding: .3rem .7rem; cursor: pointer; transition: background .2s, color .2s; align-self: flex-start;
}
.df-bs__remove-art:hover { background: #c0392b; color: #fff; }

/* ── Canvas ──────────────────────────────────────────────────── */
.df-builder__canvas {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 2rem;
  background: var(--df-bg2);
  overflow: hidden;
}
.df-builder__mockup-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  width: 100%;
}

/* ── Product shapes ──────────────────────────────────────────── */
.df-product-shape {
  position: relative;
  width: 280px;
  height: auto;
}
.df-shape-svg {
  width: 100%;
  height: auto;
  display: none;
  filter: drop-shadow(0 8px 32px rgba(0,0,0,.55));
}
.df-shape-svg.is-active { display: block; }
.df-shape-fill {
  fill: var(--df-garment-color, #0a0a0a);
  transition: fill .4s;
}
.df-shape-collar { fill: rgba(255,255,255,.07); }
.df-shape-brim   { fill: var(--df-garment-color, #0a0a0a); filter: brightness(.8); }
.df-shape-handle { stroke: var(--df-garment-color, #0a0a0a); filter: brightness(.8); }
.df-shape-pocket { fill: rgba(255,255,255,.08); }

/* ── Print area overlay ──────────────────────────────────────── */
.df-print-area {
  position: absolute;
  top: 22%;
  left: 50%;
  transform: translateX(-50%);
  width: 44%;
  aspect-ratio: 1;
  pointer-events: none;
}
.df-shape-cap  ~ .df-print-area,
.df-shape-tote ~ .df-print-area { top: 28%; width: 52%; }
.df-print-area__inner {
  width: 100%; height: 100%;
  border: 1.5px dashed rgba(255,255,255,.3);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.df-print-area__inner img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
}

/* ── Canvas controls ─────────────────────────────────────────── */
.df-canvas-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  width: 100%;
}
.df-canvas-hint {
  font-size: .78rem;
  color: var(--df-muted);
  text-align: center;
  margin: 0;
}
.df-canvas-mockup-btn {
  font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--df-ink); border: 1px solid var(--df-border); border-radius: 3px;
  padding: .5rem 1.2rem; background: none; cursor: pointer;
  transition: border-color .2s, color .2s;
}
.df-canvas-mockup-btn:hover { border-color: var(--df-gold); color: var(--df-gold); }
.df-canvas-mockup-btn:disabled { opacity: .45; cursor: default; }
.df-mockup-result {
  max-width: 100%; max-height: 240px; border-radius: 6px;
  border: 1px solid var(--df-border);
}

/* ── Order panel ─────────────────────────────────────────────── */
.df-builder__product-name {
  font-family: var(--df-font-h);
  font-size: 1.65rem;
  letter-spacing: .06em;
  color: var(--df-ink);
  margin-bottom: .25rem;
}
.df-builder__price {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--df-gold);
  margin-bottom: 1.25rem;
}

/* Size grid */
.df-size-grid { display: flex; flex-wrap: wrap; gap: .4rem; }
.df-size-btn {
  font-size: .72rem; font-weight: 700; letter-spacing: .06em;
  border: 1px solid var(--df-border); border-radius: 3px;
  padding: .35rem .65rem; background: none; cursor: pointer; color: var(--df-muted);
  transition: color .2s, border-color .2s;
}
.df-size-btn:hover { color: var(--df-ink); border-color: rgba(255,255,255,.25); }
.df-size-btn.is-active { color: var(--df-ink); border-color: var(--df-ink); }
.df-size-guide-link { margin: .25rem 0 0; }
.df-size-guide-link a { font-size: .68rem; color: var(--df-muted); text-decoration: underline; transition: color .2s; }
.df-size-guide-link a:hover { color: var(--df-gold); }

/* Qty */
.df-qty-wrap { display: flex; align-items: center; gap: 0; border: 1px solid var(--df-border); border-radius: 4px; overflow: hidden; }
.df-qty-btn {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 500; background: none; color: var(--df-muted);
  border: none; cursor: pointer; transition: color .2s, background .2s;
}
.df-qty-btn:hover { color: var(--df-ink); background: rgba(255,255,255,.06); }
#df-qty {
  width: 42px; height: 36px; text-align: center; background: none; border: none;
  border-left: 1px solid var(--df-border); border-right: 1px solid var(--df-border);
  color: var(--df-ink); font-family: var(--df-font-b); font-size: .9rem;
}

/* Add-to-cart button */
.df-builder__atc {
  width: 100%; padding: 1rem; margin-top: 1rem;
  font-family: var(--df-font-h); font-size: 1.1rem; letter-spacing: .12em; text-transform: uppercase;
  background: var(--df-gold); color: #0a0a0a; border: none; border-radius: 4px;
  cursor: pointer; position: relative; overflow: hidden;
  transition: background .2s, opacity .2s;
  display: flex; align-items: center; justify-content: center; gap: .6rem;
}
.df-builder__atc:hover:not(:disabled) { background: var(--df-gold-l); }
.df-builder__atc:disabled { opacity: .45; cursor: default; }
.df-builder__atc.is-loading .df-atc__label { opacity: 0; }
.df-atc__spinner {
  display: none;
  width: 18px; height: 18px;
  border: 2px solid rgba(10,10,10,.3);
  border-top-color: #0a0a0a;
  border-radius: 50%;
  animation: df-spin .75s linear infinite;
  position: absolute;
}
.df-builder__atc.is-loading .df-atc__spinner { display: block; }
@keyframes df-spin { to { transform: rotate(360deg); } }

.df-builder__atc-hint {
  font-size: .72rem; color: var(--df-muted); text-align: center; margin: .5rem 0 0;
}

/* Trust list */
.df-builder__trust {
  list-style: none; padding: 0; margin: 1.5rem 0 0;
  display: flex; flex-direction: column; gap: .6rem; border-top: 1px solid var(--df-border); padding-top: 1rem;
}
.df-builder__trust li {
  display: flex; align-items: flex-start; gap: .6rem;
  font-size: .75rem; color: var(--df-muted); line-height: 1.5;
}
.df-builder__trust li svg { flex-shrink: 0; margin-top: 1px; color: var(--df-gold); }

/* ── Toast ────────────────────────────────────────────────────── */
.df-builder__toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%) translateY(80px);
  background: #1a1a1a; border: 1px solid var(--df-border); border-radius: 6px;
  padding: .75rem 1.25rem; font-size: .82rem; color: var(--df-ink); z-index: 500;
  transition: transform .35s var(--df-ease), opacity .3s;
  opacity: 0; pointer-events: none; white-space: nowrap;
  max-width: 90vw; text-align: center;
}
.df-builder__toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.df-builder__toast.is-error { border-color: #c0392b; color: #e74c3c; }
.df-builder__toast.is-success { border-color: var(--df-gold); color: var(--df-gold); }

/* ── Mobile (≤ 860px): vertical stack ───────────────────────── */
@media (max-width: 860px) {
  .df-builder {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    overflow-y: auto;
    height: auto;
  }
  .df-builder__canvas {
    min-height: 60vw;
    order: -1;
    padding: 1.5rem 1rem;
  }
  .df-builder__sidebar { border-right: none; border-bottom: 1px solid var(--df-border); }
  .df-builder__order   { border-left: none; border-top: 1px solid var(--df-border); }
  .df-product-shape { width: min(240px, 65vw); }
}

@media (max-width: 520px) {
  .df-builder { margin-top: var(--df-nav-h); }
  .df-builder__product-tabs { gap: .3rem; }
  .df-ptab { font-size: .66rem; padding: .28rem .55rem; }
  .df-design-library { grid-template-columns: repeat(4, 1fr); }
  .df-builder__atc { font-size: 1rem; }
}