/* Japanese era converter */
.container--era-tool {
  max-width: 72rem;
}

.era-tool-intro {
  max-width: 60rem;
}

.era-direction-fieldset {
  margin: 0;
  padding: 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.era-direction-fieldset legend {
  padding: 0 0.4rem;
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 800;
}

.era-direction-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.era-direction-options label {
  position: relative;
  cursor: pointer;
}

.era-direction-options input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.era-direction-options span {
  display: grid;
  min-height: 3rem;
  place-items: center;
  padding: 0.45rem 0.7rem;
  border: 1px solid #bdcbc7;
  border-radius: 0.65rem;
  background: #fcfdfc;
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.era-direction-options input:checked + span {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  box-shadow: inset 0 0 0 1px var(--color-primary);
}

.era-direction-options input:focus-visible + span {
  outline: 3px solid rgba(20, 107, 99, 0.2);
  outline-offset: 2px;
}

.era-mode-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
  margin-top: 0.8rem;
  padding: 0.4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #e8eeec;
}

.era-mode-tabs button {
  min-height: 2.8rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
}

.era-mode-tabs button[aria-selected="true"] {
  border-color: var(--color-primary);
  background: var(--color-surface);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.era-mode-tabs button:focus-visible {
  outline: 3px solid rgba(20, 107, 99, 0.2);
  outline-offset: 2px;
}

.era-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(20rem, 0.9fr);
  align-items: start;
  gap: 1rem;
  margin-top: 1rem;
}

.era-input-panel,
.era-result-panel {
  min-width: 0;
}

.era-result-panel {
  position: sticky;
  top: 1rem;
}

.era-panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.era-panel-heading h2,
.era-panel-heading p {
  margin: 0;
}

.era-panel-heading h2 {
  color: var(--color-primary-dark);
  font-size: 1.05rem;
}

.era-panel-heading p {
  margin-top: 0.15rem;
  color: var(--color-muted);
  font-size: 0.72rem;
}

.era-fields-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.era-date-fields {
  margin-top: 0.8rem;
}

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

.era-field label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--color-primary-dark);
  font-size: 0.8rem;
  font-weight: 800;
}

.era-field input,
.era-field select {
  width: 100%;
  min-width: 0;
  min-height: 3rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid #bdcbc7;
  border-radius: 0.6rem;
  outline: none;
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
}

.era-field input:focus,
.era-field select:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

.era-input-with-unit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
}

.era-input-with-unit > span {
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.era-today-button {
  margin-top: 0.8rem;
}

.era-calendar-note {
  margin: 1rem 0 0;
  padding: 0.7rem 0.8rem;
  border-radius: 0.55rem;
  background: #fff8e8;
  color: #745918;
  font-size: 0.72rem;
  line-height: 1.65;
}

.era-result-placeholder {
  display: grid;
  min-height: 12rem;
  place-items: center;
  margin: 0;
  padding: 1rem;
  border: 1px dashed #bdcbc7;
  border-radius: var(--radius-sm);
  background: #f7f9f8;
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 750;
  text-align: center;
}

.era-result-placeholder.is-error {
  border-color: #e2aaa5;
  background: var(--color-danger-bg);
  color: var(--color-danger);
}

.era-result-card {
  padding: 1.5rem 1rem;
  border-radius: var(--radius-sm);
  background: #173f3a;
  color: #fff;
  text-align: center;
}

.era-result-value,
.era-result-equation,
.era-result-note {
  margin: 0;
}

.era-result-value {
  overflow-wrap: anywhere;
  color: #d7f5ed;
  font-size: clamp(1.7rem, 5vw, 2.7rem);
  font-weight: 850;
  letter-spacing: -0.03em;
  line-height: 1.3;
}

.era-result-equation {
  margin-top: 0.7rem;
  color: #c8e9e2;
  font-size: 0.82rem;
  font-weight: 700;
}

.era-result-note {
  margin-top: 0.8rem;
  padding-top: 0.7rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  color: #f5df9a;
  font-size: 0.72rem;
  font-weight: 700;
}

.era-copy-button {
  width: 100%;
  margin-top: 0.8rem;
}

.era-action-status {
  min-height: 1.75rem;
  margin: 0.55rem 0 0;
  text-align: center;
}

.era-guide {
  margin-top: 2rem;
}

.era-examples {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.era-examples p {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 0.7rem;
  margin: 0;
  padding: 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #f7f9f8;
}

.era-examples span,
.era-examples strong {
  overflow-wrap: anywhere;
}

.era-examples span {
  color: var(--color-muted);
}

.era-examples strong {
  color: var(--color-primary-dark);
}

@media (max-width: 48rem) {
  .era-workspace {
    grid-template-columns: 1fr;
  }

  .era-result-panel {
    position: static;
  }
}

@media (max-width: 34rem) {
  .era-direction-options,
  .era-fields-row,
  .era-examples {
    grid-template-columns: 1fr;
  }

  .era-direction-options {
    gap: 0.4rem;
  }

  .era-panel-heading .button {
    flex: 0 0 auto;
  }

  .era-result-placeholder {
    min-height: 8rem;
  }

  .era-examples p {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }
}