/* 전세 ↔ 월세 전환 계산기 전용 스타일 */

nav { max-width: 760px; }
main { max-width: 760px; }

.card-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 0.85rem;
}

.mode-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  margin-bottom: 0.95rem;
}

.mode-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.15rem;
  padding: 0.85rem 0.5rem;
  background: var(--surface);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.mode-tab:hover { border-color: var(--text-sub); color: var(--text); }
.mode-tab.active {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--primary);
  color: var(--primary);
}

.tab-icon { font-size: 1.35rem; }
.tab-label { font-size: 0.95rem; font-weight: 800; }
.tab-hint { font-size: 0.74rem; opacity: 0.8; }

.rc-card {
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 0.85rem;
}

.rc-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.85rem;
}
.rc-field:last-child { margin-bottom: 0; }

.rc-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.rc-label em {
  font-style: normal;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-sub);
  text-transform: none;
  letter-spacing: 0;
  margin-left: 0.25rem;
}

.rc-input {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 0.75rem 0 0;
  transition: border-color 0.15s;
}
.rc-input:focus-within { border-color: var(--primary); }
.rc-input input {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 0.85rem;
  font-size: 1.1rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text);
  outline: none;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.rc-unit {
  font-size: 0.85rem;
  color: var(--text-sub);
  font-weight: 600;
  white-space: nowrap;
}

.rc-helper {
  font-size: 0.78rem;
  color: var(--text-sub);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  min-height: 0.95rem;
}
.rc-helper:empty { display: none; }

/* 전환율 행 */
.rc-rate-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.rc-rate-row input {
  width: 90px;
  padding: 0.55rem 0.7rem;
  font-size: 1rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.rate-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-left: auto;
}
.rate-preset {
  padding: 0.35rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.rate-preset:hover { border-color: var(--text-sub); color: var(--text); }
.rate-preset.active {
  background: rgba(99, 102, 241, 0.08);
  border-color: var(--primary);
  color: var(--primary);
}

.rc-warning {
  margin-top: 0.75rem;
  padding: 0.55rem 0.85rem;
  font-size: 0.84rem;
  color: var(--error);
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 7px;
  font-weight: 600;
}

/* ─────────────────── 결과 ─────────────────── */
.result-card {
  padding: 1.2rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 1rem;
}

.result-grid {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.result-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.65rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
}
.result-row.highlight {
  background: rgba(99, 102, 241, 0.08);
  border-color: rgba(99, 102, 241, 0.4);
  padding: 0.95rem 1rem;
}

.result-row-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-sub);
}
.result-row-label em {
  font-style: normal;
  font-size: 0.74rem;
  color: var(--text-sub);
  font-weight: 500;
  margin-left: 0.25rem;
}

.result-row-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.result-row.highlight .result-row-value {
  font-size: 1.55rem;
  color: var(--primary);
}

.rc-note {
  margin-top: 1.1rem;
  padding: 0.75rem 0.95rem;
  font-size: 0.82rem;
  color: var(--text-sub);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  line-height: 1.65;
}

@media (max-width: 600px) {
  .rc-rate-row { flex-direction: column; align-items: stretch; }
  .rate-presets { margin-left: 0; justify-content: stretch; }
  .rate-preset { flex: 1; text-align: center; }
  .result-row { grid-template-columns: 1fr; gap: 0.25rem; }
  .result-row-value { text-align: left; }
}