.designer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.canvas-shell {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  padding: clamp(14px, 2vw, 22px);
  background: var(--paper-soft);
  border: 3px solid var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hard);
}

.canvas-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
}

.canvas-frame canvas {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
  cursor: grab;
}

.canvas-frame canvas:active {
  cursor: grabbing;
}

.canvas-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tool-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  border: 2px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  transition: transform 0.3s var(--ease-spring), border-color 0.3s var(--ease-out),
    background-color 0.3s var(--ease-out), color 0.3s var(--ease-out);
}

.tool-button:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--ink);
}

.tool-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.tool-button svg {
  width: 16px;
  height: 16px;
}

.tool-button.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.canvas-hint {
  margin-top: 12px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink-mute);
}

.canvas-hint strong {
  color: var(--ink);
}

.designer-side {
  display: grid;
  gap: 22px;
}

.designer-block {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--paper-soft);
  border: 2px solid var(--line);
  border-radius: var(--radius-lg);
}

.designer-block h2 {
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  margin-bottom: 4px;
}

.designer-block > p {
  margin-bottom: 16px;
  font-size: 0.9rem;
  color: var(--ink-mute);
}

.block-label {
  display: block;
  margin-bottom: 9px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.block-row + .block-row {
  margin-top: 18px;
}

.drop-zone {
  display: grid;
  place-items: center;
  gap: 10px;
  padding: 30px 20px;
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius);
  background: var(--white);
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out),
    transform 0.3s var(--ease-out);
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--red);
  background: rgba(245, 67, 44, 0.07);
  transform: translateY(-3px);
}

.drop-zone svg {
  width: 32px;
  height: 32px;
  color: var(--red);
}

.drop-zone span {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-mute);
}

.product-select {
  width: 100%;
  padding: 13px 16px;
  background: var(--white);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.3s var(--ease-out);
}

.product-select:hover,
.product-select:focus {
  outline: none;
  border-color: var(--ink);
}

.designer-side .color-dot {
  width: 34px;
  height: 34px;
  border-color: var(--line);
}

.designer-side .color-dot.is-active,
.designer-side .color-dot:hover {
  border-color: var(--ink);
}

.designer-side .size-chip {
  border-color: var(--line);
  color: var(--ink);
}

.designer-side .size-chip:hover {
  border-color: var(--ink);
}

.designer-side .size-chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.text-panel {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px solid var(--line);
}

.text-panel input[type="text"],
.text-panel select {
  width: 100%;
  padding: 12px 16px;
  background: var(--white);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.92rem;
  transition: border-color 0.3s var(--ease-out);
}

.text-panel input[type="text"]:focus,
.text-panel select:focus {
  outline: none;
  border-color: var(--ink);
}

.layer-empty {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius);
  background: var(--paper-deep);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.side-note {
  margin-top: 10px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--red-deep);
}

.checkout-block {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.checkout-block h2,
.checkout-block .block-label {
  color: var(--paper);
}

.checkout-block .block-label {
  color: rgba(246, 236, 221, 0.6);
}

.checkout-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.designer-actions {
  display: grid;
  gap: 14px;
}

.checkout-block .btn-ghost {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink);
  box-shadow: 0 10px 24px rgba(246, 236, 221, 0.16);
}

.checkout-block .btn-ghost::before {
  background: var(--yellow);
}

.checkout-block .btn-ghost:hover {
  color: var(--ink);
}

.checkout-total {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--yellow);
}

.checkout-block .quantity-control {
  border-color: rgba(246, 236, 221, 0.3);
}

.checkout-block .quantity-control button:hover {
  background: var(--paper);
  color: var(--ink);
}

.checkout-note {
  margin-top: 14px;
  font-size: 0.82rem;
  line-height: 1.55;
  color: rgba(246, 236, 221, 0.68);
}

.designer-action-status {
  margin-top: 14px;
}

.designer-auth-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  background: rgba(27, 26, 23, 0.62);
  backdrop-filter: blur(10px);
}

.designer-auth-modal[hidden] {
  display: none;
}

.designer-auth-card {
  position: relative;
  width: min(100%, 460px);
  padding: clamp(24px, 4vw, 34px);
  background: var(--paper-soft);
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift);
}

.designer-auth-card h2 {
  margin-bottom: 8px;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
}

.designer-auth-card > p:not(.eyebrow) {
  margin-bottom: 18px;
  color: var(--ink-mute);
}

.designer-auth-close {
  position: absolute;
  top: 12px;
  right: 12px;
}

.designer-auth-register {
  display: inline-block;
  margin-top: 14px;
  font-weight: 800;
  color: var(--red);
  text-decoration: underline;
}

@media (max-width: 1024px) {
  .designer-layout {
    grid-template-columns: 1fr;
  }

  .canvas-shell {
    position: static;
  }
}