.flooring-calculator {
  max-width: 960px;
  margin: 0 auto;
}

.flooring-calculator h1 {
  margin-bottom: 0.4rem;
}

.flooring-calculator h2 {
  margin-top: 0;
  margin-bottom: 0.45rem;
}

.flooring-calculator h3 {
  margin-top: 0;
}

.tool-header {
  margin-bottom: 1.5rem;
}

.tool-header p {
  max-width: 760px;
  margin: 0;
  color: var(--text-muted);
}

.flooring-panel {
  background: var(--panel-background);
  border: 1px solid var(--border);
}

.flooring-section {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.flooring-section:last-child {
  border-bottom: 0;
}

.flooring-section > p {
  max-width: 760px;
  margin-top: 0;
  color: var(--text-muted);
}

.flooring-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.field-group {
  min-width: 0;
}

.field-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 700;
}

.field-group input,
.field-group select {
  width: 100%;
  box-sizing: border-box;
}

/* Measurement system */

.measurement-mode {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.measurement-mode h2 {
  margin-bottom: 0.35rem;
}

.measurement-mode > p {
  max-width: 760px;
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.measurement-mode-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 280px));
  gap: 0.75rem;
}

.measurement-mode-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 4.5rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--border);
  background: var(--page-background);
  color: var(--text);
  font-size: 1.05rem;
  cursor: pointer;
}

.measurement-mode-button strong {
  font-size: 1.1rem;
}

.measurement-mode-button span {
  margin-top: 0.2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 400;
}

.measurement-mode-button:hover {
  border-color: var(--main);
}

.measurement-mode-button.active {
  border-color: var(--main);
  background: var(--main);
  color: var(--page-background);
}

.measurement-mode-button.active span {
  color: var(--page-background);
}

.dimension-unit-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* Dynamic flooring options */

.dynamic-options {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.dynamic-options-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

/* Rooms */

.rooms {
  display: grid;
  gap: 1rem;
}

.room {
  padding: 1.25rem;
  border: 1px solid var(--border);
  background: var(--page-background);
}

.room-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.room-header .room-name {
  flex: 1;
  min-width: 0;
}

.room-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
}

.dimension-field {
  min-width: 0;
}

.dimension-field > label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 700;
}

.dimension-inputs {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
  min-width: 0;
}

.dimension-input {
  display: flex;
  min-width: 0;
}

.dimension-input input {
  width: 6ch;
  min-width: 6ch;
  max-width: 6ch;
  flex: 0 0 6ch;
  box-sizing: border-box;
}

.dimension-input span {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.55rem;
  border: 1px solid var(--border);
  border-left: 0;
  background: var(--panel-background);
  color: var(--main);
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
}

.room-secondary-fields {
  display: none;
}

.room-area {
  grid-column: 1 / -1;
  padding-top: 0.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* General input wrappers */

.input-with-prefix,
.input-with-suffix {
  display: flex;
  align-items: stretch;
  width: 100%;
}

.input-with-prefix input,
.input-with-suffix input {
  flex: 1;
  min-width: 0;
}

.input-with-prefix span,
.input-with-suffix span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  padding: 0 0.65rem;
  background: var(--panel-background);
  border: 1px solid var(--border);
  color: var(--main);
  font-weight: 700;
}

.input-with-prefix input,
.input-with-suffix input {
  border-left: 0;
}

/* Waste */

.waste-controls {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
}

.waste-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.waste-preset.active {
  background: var(--main);
  color: var(--page-background);
}

.waste-custom {
  width: 225px;
}

.waste-custom .input-with-suffix {
  width: 100%;
}

/* Pricing */

.pricing-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1rem;
}

/* Results */

.flooring-result {
  padding: 1.5rem;
  background: var(--page-background);
  border-top: 1px solid var(--border);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.result-item {
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel-background);
}

.result-label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.result-item strong {
  display: block;
  font-size: 1.25rem;
}

.result-highlight {
  border-color: var(--main);
}

.result-highlight strong {
  color: var(--main);
}

.package-result {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--main);
  background: var(--panel-background);
  color: var(--text);
}

.calculation-breakdown {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel-background);
}

.calculation-breakdown p {
  margin: 0.35rem 0;
}

.result-note {
  margin: 1rem 0 0;
  color: var(--text-muted);
}

/* SEO content */

.flooring-info {
  margin-top: 2rem;
}

.flooring-info h2 {
  margin-top: 2rem;
}

.flooring-info h2:first-child {
  margin-top: 0;
}

.flooring-info h3 {
  margin-top: 1.5rem;
}

.flooring-info p {
  max-width: 800px;
}

/* Responsive */

@media (max-width: 700px) {
  .flooring-fields,
  .pricing-fields,
  .room-fields,
  .dynamic-options-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .measurement-mode-buttons {
    grid-template-columns: 1fr 1fr;
    max-width: none;
  }

  .section-heading,
  .waste-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .waste-custom {
    width: 100%;
  }

  .room-header {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .flooring-section,
  .flooring-result {
    padding: 1rem;
  }

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

  .dimension-inputs {
    gap: 0.35rem;
  }

  .dimension-input span {
    padding: 0 0.4rem;
    font-size: 0.8rem;
  }
}