/*
 * Birleştirilen hesaplama araçlarının yalnız sayfa düzeyindeki mod, koşullu
 * alan ve sonuç görselleştirme stilleri. Ortak tasarım sistemi değiştirilmeden
 * Stopaj ile Perde Kumaşı akışlarının aynı erişilebilir davranışı paylaşması
 * için ayrı tutulur.
 */
.merged-tool-mode-switch {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 22px;
  padding: 0;
  border: 0;
}

.merged-tool-mode-switch--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.merged-tool-mode-switch legend,
.merged-tool-fieldset legend {
  width: 100%;
  margin: 0 0 9px;
  padding: 0;
  color: var(--color-dark);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.merged-tool-mode-option {
  position: relative;
  display: block;
  min-width: 0;
}

.merged-tool-mode-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.merged-tool-mode-option span {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 11px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card-soft);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.merged-tool-mode-option input:checked + span {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  box-shadow: 0 0 0 2px rgba(29, 78, 216, 0.1);
}

.merged-tool-mode-option input:focus-visible + span {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.merged-tool-panel[hidden],
.merged-result-group[hidden] {
  display: none !important;
}

.merged-tool-panel {
  margin: 0 0 20px;
  padding: 16px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-card-soft);
}

.merged-tool-panel > :last-child {
  margin-bottom: 0 !important;
}

.merged-tool-fieldset {
  min-width: 0;
  margin: 0 0 20px;
  padding: 0;
  border: 0;
}

.merged-tool-fieldset.has-error {
  margin-left: -10px;
  margin-right: -10px;
  padding: 10px;
  border: 1px solid var(--color-error);
  border-radius: var(--radius-md);
  background: var(--color-error-soft);
}

.merged-tool-context {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin: 4px 0 20px;
  padding: 12px 14px;
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-primary-soft);
  color: var(--color-text-muted);
  font-size: 12px;
  line-height: 1.55;
}

.merged-tool-context i {
  flex: 0 0 auto;
  margin-top: 3px;
  color: var(--color-primary);
}

.merged-tool-context strong {
  color: var(--color-dark);
}

.merged-tool .result-line-value,
.merged-tool .decision-subtitle {
  overflow-wrap: anywhere;
}

.curtain-visual {
  margin: 0 0 22px;
  padding: 14px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #f8fbff 0%, #eef4fb 100%);
}

.curtain-visual svg {
  width: 100%;
  height: auto;
  min-height: 210px;
}

.curtain-visual figcaption {
  margin-top: 8px;
  color: var(--color-text-light);
  font-size: 11px;
  line-height: 1.45;
  text-align: center;
}

.curtain-visual .curtain-panel {
  fill: url(#curtainGradient);
  stroke: #1d4ed8;
  stroke-width: 1.5;
}

.curtain-visual .curtain-fold {
  fill: none;
  stroke: rgba(29, 78, 216, 0.28);
  stroke-width: 2;
}

.curtain-visual .curtain-rod {
  stroke: #334155;
  stroke-width: 6;
  stroke-linecap: round;
}

.curtain-visual .measure-line {
  stroke: #0f766e;
  stroke-width: 1.5;
  marker-start: url(#measureArrow);
  marker-end: url(#measureArrow);
}

.curtain-visual .measure-label {
  fill: #134e4a;
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
}

.curtain-visual.is-fon .curtain-center-gap {
  display: block;
}

.curtain-visual:not(.is-fon) .curtain-center-gap {
  display: none;
}

.formula-notebook {
  position: relative;
  margin: 18px 0 24px;
  padding: 22px 22px 20px 46px;
  overflow: hidden;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  background-color: #fffef8;
  background-image: repeating-linear-gradient(to bottom, transparent 0, transparent 31px, #dbeafe 32px, transparent 33px);
  box-shadow: var(--shadow-sm);
}

.formula-notebook::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 28px;
  width: 2px;
  background: #fecaca;
}

.formula-notebook h3 {
  margin: 0 0 10px;
  font-size: var(--fs-md);
}

.formula-notebook p {
  margin: 0 0 8px;
  color: var(--color-dark);
  line-height: 1.65;
}

@media (max-width: 767px) {
  .merged-tool-mode-switch,
  .merged-tool-mode-switch--two {
    grid-template-columns: 1fr;
  }

  .merged-tool-mode-option span {
    min-height: 48px;
    justify-content: flex-start;
    text-align: left;
  }

  .merged-tool-panel {
    padding: 14px;
  }

  .curtain-visual {
    padding: 8px;
  }

  .formula-notebook {
    padding-left: 38px;
  }

  .formula-notebook::before {
    left: 22px;
  }
}