.visualizer-container {
  display: grid;
  grid-template-columns: 320px 1fr 320px;
  gap: 2rem;
  max-width: 1600px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.visualizer-sidebar {
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px rgb(0 0 0 / 10%);
  height: fit-content;
}

.visualizer-section {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #e5e7eb;
}

.visualizer-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.visualizer-section h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.dimension-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.input-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: #4b5563;
  margin-bottom: 0.375rem;
}

.input-group input[type='number'] {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 2px solid #d1d5db;
  border-radius: 6px;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.input-group input[type='number']:focus {
  outline: none;
  border-color: #10b981;
}

.area-display {
  background: #f3f4f6;
  padding: 0.75rem;
  border-radius: 6px;
  text-align: center;
  font-weight: 600;
  color: #1f2937;
}

.area-display strong {
  color: #10b981;
  font-size: 1.25rem;
}

.tile-size-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tile-size-btn {
  padding: 0.625rem 0.5rem;
  border: 2px solid #d1d5db;
  background: #ffffff;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: #4b5563;
  transition: all 0.2s;
  text-align: center;
}

.tile-size-btn:hover {
  border-color: #10b981;
  background: #f0fdf4;
  transform: translateY(-2px);
}

.tile-size-btn.active {
  border-color: #10b981;
  background: #10b981;
  color: #ffffff;
}

.custom-size-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 0.5rem;
  align-items: end;
}

.custom-size-inputs input {
  padding: 0.5rem;
  border: 2px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.875rem;
}

.custom-size-inputs button {
  padding: 0.5rem 0.75rem;
  background: #6b7280;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background 0.2s;
}

.custom-size-inputs button:hover {
  background: #4b5563;
}

.pattern-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.pattern-btn {
  padding: 0.75rem 0.5rem;
  border: 2px solid #d1d5db;
  background: #ffffff;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.pattern-btn:hover {
  border-color: #10b981;
  background: #f0fdf4;
  transform: translateY(-2px);
}

.pattern-btn.active {
  border-color: #10b981;
  background: #d1fae5;
  box-shadow: 0 0 0 3px rgb(16 185 129 / 10%);
}

.pattern-preview {
  width: 60px;
  height: 60px;
  background: #f3f4f6;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: #6b7280;
}

.pattern-preview.straight {
  background:
    linear-gradient(90deg, #10b981 48%, transparent 48%, transparent 52%, #10b981 52%),
    linear-gradient(0deg, #10b981 48%, transparent 48%, transparent 52%, #10b981 52%);
  background-size: 20px 20px;
}

.pattern-preview.brick {
  background:
    linear-gradient(90deg, #10b981 48%, transparent 48%),
    linear-gradient(0deg, #10b981 48%, transparent 48%);
  background-size: 40px 20px;
  background-position:
    0 0,
    20px 20px;
}

.pattern-preview.herringbone {
  background: repeating-linear-gradient(
    45deg,
    #10b981,
    #10b981 10px,
    transparent 10px,
    transparent 20px
  );
}

.pattern-preview.diagonal {
  background:
    linear-gradient(45deg, #10b981 25%, transparent 25%, transparent 75%, #10b981 75%),
    linear-gradient(45deg, #10b981 25%, transparent 25%, transparent 75%, #10b981 75%);
  background-size: 20px 20px;
  background-position:
    0 0,
    10px 10px;
}

.pattern-preview.basketweave {
  background:
    linear-gradient(90deg, #10b981 48%, transparent 48%),
    linear-gradient(0deg, #10b981 48%, transparent 48%);
  background-size:
    20px 40px,
    40px 20px;
}

.pattern-preview.vertical {
  background: repeating-linear-gradient(
    90deg,
    #10b981,
    #10b981 8px,
    transparent 8px,
    transparent 16px
  );
}

.pattern-btn span {
  font-size: 0.875rem;
  font-weight: 600;
  color: #374151;
}

.grout-width-control {
  margin-bottom: 1rem;
}

.grout-width-slider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.grout-width-slider input[type='range'] {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: #d1d5db;
  outline: none;
  appearance: none;
}

.grout-width-slider input[type='range']::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #10b981;
  cursor: pointer;
}

.grout-width-slider input[type='range']::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #10b981;
  cursor: pointer;
  border: none;
}

.grout-width-display {
  font-weight: 700;
  color: #10b981;
  min-width: 50px;
  text-align: right;
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.color-btn {
  width: 100%;
  aspect-ratio: 1;
  border: 3px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.color-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 6px rgb(0 0 0 / 20%);
}

.color-btn.active {
  border-color: #10b981;
  box-shadow: 0 0 0 3px rgb(16 185 129 / 20%);
}

.color-picker-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.color-picker-row label {
  font-size: 0.875rem;
  font-weight: 600;
  color: #6b7280;
}

.color-picker-row input[type='color'] {
  width: 60px;
  height: 36px;
  border: 2px solid #d1d5db;
  border-radius: 6px;
  cursor: pointer;
}

.canvas-container {
  position: relative;
  background: #ffffff;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 6px rgb(0 0 0 / 10%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#tile-canvas {
  max-width: 100%;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: inset 0 2px 4px rgb(0 0 0 / 5%);
}

.zoom-controls {
  position: absolute;
  top: 2rem;
  right: 2rem;
  display: flex;
  gap: 0.5rem;
  background: #ffffff;
  padding: 0.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgb(0 0 0 / 10%);
}

.zoom-controls button {
  width: 36px;
  height: 36px;
  border: none;
  background: #f3f4f6;
  color: #374151;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1.125rem;
  font-weight: 700;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zoom-controls button:hover {
  background: #10b981;
  color: #ffffff;
  transform: scale(1.1);
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.625rem 0;
  border-bottom: 1px solid #f3f4f6;
}

.calc-row:last-child {
  border-bottom: none;
}

.calc-row label {
  font-size: 0.875rem;
  color: #6b7280;
  font-weight: 500;
}

.calc-row .value {
  font-size: 1rem;
  color: #1f2937;
  font-weight: 700;
}

.cost-input-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.cost-input-row label {
  font-size: 0.875rem;
  font-weight: 600;
  color: #6b7280;
}

.cost-input-row input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 2px solid #d1d5db;
  border-radius: 6px;
  font-size: 1rem;
}

.cost-breakdown {
  background: #f9fafb;
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1rem;
}

.cost-breakdown .calc-row {
  padding: 0.5rem 0;
}

.cost-breakdown .calc-row.total {
  border-top: 2px solid #10b981;
  padding-top: 0.75rem;
  margin-top: 0.5rem;
}

.cost-breakdown .calc-row.total .value {
  color: #10b981;
  font-size: 1.25rem;
}

#pattern-info {
  background: #f0fdf4;
  border-left: 4px solid #10b981;
  padding: 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #065f46;
}

#pattern-info strong {
  color: #047857;
  display: block;
  margin-bottom: 0.25rem;
}

.cta-section {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
}

.cta-section h4 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.cta-section p {
  font-size: 0.875rem;
  margin-bottom: 1rem;
  opacity: 95%;
}

.cta-section .btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: #ffffff;
  color: #10b981;
  font-weight: 700;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.cta-section .btn:hover {
  background: transparent;
  color: #ffffff;
  border-color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgb(0 0 0 / 20%);
}

.action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.action-btn {
  padding: 0.75rem 1rem;
  border: 2px solid #d1d5db;
  background: #ffffff;
  color: #374151;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.action-btn:hover {
  border-color: #10b981;
  background: #f0fdf4;
  color: #10b981;
  transform: translateY(-2px);
}

.action-btn.primary {
  background: #10b981;
  color: #ffffff;
  border-color: #10b981;
}

.action-btn.primary:hover {
  background: #059669;
  border-color: #059669;
}

.action-btn.danger {
  color: #ef4444;
  border-color: #fecaca;
}

.action-btn.danger:hover {
  background: #fef2f2;
  border-color: #ef4444;
}

.instructions-panel {
  background: #f9fafb;
  border-radius: 12px;
  padding: 2rem;
  margin-top: 3rem;
}

.instructions-panel h3 {
  font-size: 1.5rem;
  color: #1f2937;
  margin-bottom: 1.5rem;
  text-align: center;
}

.instructions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.instruction-step {
  background: #ffffff;
  padding: 1.25rem;
  border-radius: 8px;
  border-left: 4px solid #10b981;
}

.instruction-step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: #10b981;
  color: white;
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.instruction-step h4 {
  font-size: 1rem;
  color: #1f2937;
  margin-bottom: 0.5rem;
}

.instruction-step p {
  font-size: 0.875rem;
  color: #6b7280;
  line-height: 1.5;
}

.visualizer-notification {
  position: fixed;
  top: 2rem;
  right: 2rem;
  background: #10b981;
  color: white;
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgb(0 0 0 / 20%);
  font-weight: 600;
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
}

.visualizer-notification.fade-out {
  animation: fadeOut 0.3s ease-out forwards;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0%;
  }

  to {
    transform: translateX(0);
    opacity: 100%;
  }
}

@keyframes fadeOut {
  to {
    opacity: 0%;
    transform: translateY(-20px);
  }
}

@media (max-width: 1400px) {
  .visualizer-container {
    grid-template-columns: 280px 1fr 280px;
    gap: 1.5rem;
  }
}

@media (max-width: 1200px) {
  .visualizer-container {
    grid-template-columns: 1fr;
  }

  .canvas-container {
    order: 1;
  }

  .visualizer-sidebar:first-child {
    order: 2;
  }

  .visualizer-sidebar:last-child {
    order: 3;
  }

  #tile-canvas {
    width: 100%;
    max-width: 800px;
  }

  .instructions-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

@media (max-width: 768px) {
  .visualizer-container {
    padding: 1rem 0.5rem;
  }

  .visualizer-sidebar {
    padding: 1rem;
  }

  .tile-size-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pattern-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .color-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .action-buttons {
    grid-template-columns: 1fr;
  }

  .zoom-controls {
    top: 1rem;
    right: 1rem;
  }

  .instructions-grid {
    grid-template-columns: 1fr;
  }

  .visualizer-notification {
    top: 1rem;
    right: 1rem;
    left: 1rem;
  }
}

@media (max-width: 480px) {
  .dimension-inputs {
    grid-template-columns: 1fr;
  }

  .tile-size-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .custom-size-inputs {
    grid-template-columns: 1fr;
  }

  .custom-size-inputs button {
    width: 100%;
  }
}

@media print {
  .visualizer-sidebar,
  .zoom-controls,
  .action-buttons,
  .instructions-panel {
    display: none;
  }

  .canvas-container {
    box-shadow: none;
    break-inside: avoid;
  }

  #tile-canvas {
    max-width: 100%;
    border: 1px solid #000000;
  }
}