#fabric-calc-app {
  --fpc-accent: #4f46e5;
  --fpc-accent-soft: rgba(79, 70, 229, 0.12);

  width: min(100%, 1120px);
  margin: 1.5rem auto;
  padding: 1rem;
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 1rem;
  color: var(--text-main);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.14);
  box-sizing: border-box;
  overflow: visible;
  isolation: isolate;
}

#fabric-calc-app *,
#fabric-calc-app *::before,
#fabric-calc-app *::after {
  box-sizing: border-box;
}

#fabric-calc-app .fpc-controls,
#fabric-calc-app .fpc-main,
#fabric-calc-app .fpc-layout,
#fabric-calc-app .fpc-canvas,
#fabric-calc-app .fpc-result,
#fabric-calc-app .fpc-merch {
  min-width: 0;
  max-width: 100%;
}

#fabric-calc-app .fpc-controls,
#fabric-calc-app .fpc-config,
#fabric-calc-app .fpc-field,
#fabric-calc-app .fpc-main,
#fabric-calc-app .fpc-checklist {
  display: grid;
}

#fabric-calc-app .fpc-controls,
#fabric-calc-app .fpc-main {
  gap: 1rem;
  align-content: start;
}

#fabric-calc-app .fpc-config,
#fabric-calc-app .fpc-result,
#fabric-calc-app .fpc-canvas,
#fabric-calc-app .fpc-merch {
  padding: 1rem;
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  border-radius: 0.85rem;
}

#fabric-calc-app .fpc-config,
#fabric-calc-app .fpc-field {
  gap: 0.85rem;
}

#fabric-calc-app .fpc-config h3,
#fabric-calc-app .fpc-merch-title {
  margin: 0;
  color: var(--fpc-accent);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

#fabric-calc-app .fpc-field {
  gap: 0.4rem;
}

#fabric-calc-app .fpc-field label,
#fabric-calc-app .fpc-result-label {
  color: var(--text-muted);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

#fabric-calc-app .fpc-select,
#fabric-calc-app .fpc-input {
  width: 100%;
  min-height: 44px;
  color: var(--text-main);
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: 0.7rem;
  outline: none;
}

#fabric-calc-app .fpc-select {
  padding: 0.75rem 2.4rem 0.75rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 750;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234F46E5' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  background-size: 1rem;
}

#fabric-calc-app .fpc-select:focus,
#fabric-calc-app .fpc-input:focus {
  border-color: var(--fpc-accent);
  box-shadow: 0 0 0 3px var(--fpc-accent-soft);
}

#fabric-calc-app .fpc-size-options,
#fabric-calc-app .fpc-actions,
#fabric-calc-app .fpc-stepper,
#fabric-calc-app .fpc-scheme {
  display: grid;
}

#fabric-calc-app .fpc-size-options {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

#fabric-calc-app .fpc-size-option,
#fabric-calc-app .fpc-action,
#fabric-calc-app .fpc-copy-button,
#fabric-calc-app .fpc-step-button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

#fabric-calc-app .fpc-size-option {
  min-height: 40px;
  padding: 0.6rem 0.4rem;
  color: var(--fpc-accent);
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.28);
  border-radius: 0.7rem;
  font-size: 0.72rem;
  font-weight: 900;
}

#fabric-calc-app .fpc-size-option.active,
#fabric-calc-app .fpc-action-primary {
  color: #fff;
  background: var(--fpc-accent);
}

#fabric-calc-app .fpc-stepper {
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  overflow: hidden;
  background: var(--bg-surface);
  border: 1.5px solid var(--border-color);
  border-radius: 0.7rem;
}

#fabric-calc-app .fpc-step-button {
  min-height: 44px;
  color: var(--fpc-accent);
  background: transparent;
  font-size: 1.25rem;
  font-weight: 900;
}

#fabric-calc-app .fpc-input {
  min-height: 44px;
  border-block: 0;
  border-radius: 0;
  text-align: center;
  font-size: 1rem;
  font-weight: 850;
}

#fabric-calc-app .fpc-actions {
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

#fabric-calc-app .fpc-action {
  min-height: 44px;
  border-radius: 0.7rem;
  font-weight: 850;
}

#fabric-calc-app .fpc-action-secondary {
  color: var(--text-main);
  background: var(--bg-muted);
  border: 1px solid var(--border-color);
}

#fabric-calc-app .fpc-main {
  grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.2fr);
}

#fabric-calc-app .fpc-warning {
  grid-column: 1 / -1;
  display: none;
  padding: 0.85rem 1rem;
  color: #c2410c;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  border-radius: 0.75rem;
  font-size: 0.85rem;
  font-weight: 650;
}

#fabric-calc-app .fpc-result-label {
  display: block;
  margin-bottom: 0.35rem;
}

#fabric-calc-app .fpc-result-value {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem;
  color: var(--fpc-accent);
  font-size: clamp(2.8rem, 5vw, 4.4rem);
  font-weight: 950;
  line-height: 0.95;
}

#fabric-calc-app .fpc-result-unit {
  color: var(--text-muted);
  font-size: 1.25rem;
  font-weight: 900;
}

#fabric-calc-app .fpc-advice {
  display: inline-flex;
  max-width: 100%;
  margin-top: 0.9rem;
  padding: 0.6rem 0.85rem;
  color: var(--fpc-accent);
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.22);
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 800;
  overflow-wrap: anywhere;
}

#fabric-calc-app .fpc-scheme {
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 0.55rem;
}

#fabric-calc-app .fpc-ruler,
#fabric-calc-app .fpc-board {
  height: 260px;
}

#fabric-calc-app .fpc-ruler {
  position: relative;
}

#fabric-calc-app .fpc-ruler-mark {
  position: absolute;
  right: 0;
  left: 0;
  display: flex;
  align-items: flex-start;
  transform: translateY(-50%);
}

#fabric-calc-app .fpc-ruler-mark::before {
  content: '';
  width: 8px;
  height: 1.5px;
  margin-top: 0.42em;
  margin-right: 4px;
  background: var(--text-muted);
  flex-shrink: 0;
}

#fabric-calc-app .fpc-ruler-mark span {
  color: var(--text-muted);
  font-size: 0.58rem;
  font-weight: 750;
  white-space: nowrap;
}

#fabric-calc-app .fpc-board {
  width: 100%;
  min-width: 0;
  padding: 6px 6px 22px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
  background: var(--bg-surface);
  border: 2px solid var(--fpc-accent);
  border-radius: 0.35rem;
}

#fabric-calc-app .fpc-piece-row {
  display: flex;
  gap: 4px;
  align-items: stretch;
  min-height: 0;
  flex-shrink: 0;
}

#fabric-calc-app .fpc-piece {
  min-width: 0;
  padding: 4px 8px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  border: 1.5px solid;
  border-radius: 0.3rem;
}

#fabric-calc-app .fpc-piece-name {
  width: 100%;
  overflow: hidden;
  color: var(--text-main);
  font-size: 0.62rem;
  font-weight: 850;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

#fabric-calc-app .fpc-piece-fold {
  border-left: 3px dashed rgba(79, 70, 229, 0.68);
}

#fabric-calc-app .fpc-fold-indicator {
  margin-top: 2px;
  color: rgba(79, 70, 229, 0.78);
  font-size: 0.48rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

#fabric-calc-app .fpc-board-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 650;
  text-align: center;
}

#fabric-calc-app .fpc-scheme-info {
  margin-top: 0.55rem;
  color: var(--text-muted);
  font-size: 0.68rem;
  font-weight: 750;
  text-align: right;
}

#fabric-calc-app .fpc-merch-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

#fabric-calc-app .fpc-copy-button {
  min-height: 36px;
  padding: 0 0.8rem;
  color: var(--fpc-accent);
  background: rgba(79, 70, 229, 0.08);
  border: 1px solid rgba(79, 70, 229, 0.2);
  border-radius: 0.65rem;
  font-size: 0.72rem;
  font-weight: 850;
}

#fabric-calc-app .fpc-checklist {
  margin: 0;
  padding: 0;
  gap: 0.5rem;
  list-style: none;
}

#fabric-calc-app .fpc-merch-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 650;
}

#fabric-calc-app .fpc-merch-dot {
  color: var(--fpc-accent);
  font-size: 0.5rem;
  flex-shrink: 0;
  opacity: 0.72;
}

@media (max-width: 900px) {
  #fabric-calc-app,
  #fabric-calc-app .fpc-main {
    grid-template-columns: 1fr;
  }

  #fabric-calc-app .fpc-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #fabric-calc-app .fpc-actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  #fabric-calc-app {
    margin: 0;
    padding: 0.85rem;
    border-radius: 0.85rem;
  }

  #fabric-calc-app .fpc-controls,
  #fabric-calc-app .fpc-actions,
  #fabric-calc-app .fpc-size-options {
    grid-template-columns: 1fr;
  }

  #fabric-calc-app .fpc-scheme {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  #fabric-calc-app .fpc-ruler,
  #fabric-calc-app .fpc-board {
    height: 220px;
  }
}