/* ==============================
   월세 세액공제 계산기 (rt-)
   색상은 블로그 css/style.css 의 CSS 변수만 사용한다.
   예외: 오류 표시용 빨간색 1개 (--rt-color-error)
   ============================== */

:root {
  --rt-color-error: #dc2626;
  --rt-radius: 10px;
  --rt-touch: 44px;
}

/* ---------- Header ---------- */

.rt-header {
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
}

.rt-header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.rt-back {
  display: inline-flex;
  align-items: center;
  min-height: var(--rt-touch);
  font-weight: 600;
}

.rt-theme-toggle {
  min-width: var(--rt-touch);
  min-height: var(--rt-touch);
}

/* ---------- Layout ---------- */

.rt-main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 3rem;
}

.rt-intro {
  margin-bottom: 1.25rem;
}

.rt-title {
  font-size: 1.5rem;
  line-height: 1.35;
  margin: 0 0 0.25rem;
  color: var(--color-text);
  word-break: keep-all;
}

.rt-subtitle {
  margin: 0;
  color: var(--color-text-secondary);
  word-break: keep-all;
}

/* ---------- Guide ---------- */

.rt-guide {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  padding: 0 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.rt-guide summary {
  cursor: pointer;
  font-weight: 700;
  min-height: var(--rt-touch);
  display: flex;
  align-items: center;
  list-style-position: inside;
}

.rt-guide summary::-webkit-details-marker {
  margin-right: 0.4rem;
}

.rt-guide[open] summary {
  border-bottom: 1px solid var(--color-border);
}

.rt-guide-steps,
.rt-guide-terms {
  margin: 0.75rem 0;
  padding-left: 1.25rem;
}

.rt-guide-steps li,
.rt-guide-terms li {
  margin-bottom: 0.3rem;
  word-break: keep-all;
}

.rt-guide-heading {
  margin: 0.75rem 0 0;
}

/* ---------- Form ---------- */

.rt-form {
  margin-bottom: 1.5rem;
}

.rt-chip:focus-visible,
.rt-input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.rt-field {
  margin: 0 0 1.25rem;
  padding: 0;
  border: none;
  min-width: 0;
}

.rt-label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.4rem;
  padding: 0;
  color: var(--color-text);
}

.rt-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.rt-input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 0.5rem 3.5rem 0.5rem 0.9rem;
  font: inherit;
  font-size: 1.125rem; /* 16px 이상: iOS 자동 확대 방지 */
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  -webkit-appearance: none;
  appearance: none;
}

.rt-input:focus {
  border-color: var(--color-accent);
}

.rt-input[aria-invalid="true"] {
  border-color: var(--rt-color-error);
}

.rt-unit {
  position: absolute;
  right: 0.9rem;
  color: var(--color-text-secondary);
  pointer-events: none;
}

.rt-hint {
  margin: 0.3rem 0 0;
  min-height: 1.5em;
  text-align: right;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.rt-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.rt-chip {
  flex: 1 1 auto;
  min-width: 0;
  min-height: var(--rt-touch);
  padding: 0 0.75rem;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
}

.rt-chip:hover {
  border-color: var(--color-accent);
}

/* ---------- Segmented radios ---------- */

.rt-segment-options {
  display: flex;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  padding: 4px;
  gap: 4px;
}

.rt-segment-options input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  pointer-events: none;
}

.rt-segment-options label {
  flex: 1 1 0;
  min-width: 0;
  min-height: var(--rt-touch);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.25rem 0.35rem;
  border-radius: 7px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text-secondary);
  cursor: pointer;
  word-break: keep-all;
}

.rt-segment-options input:checked + label {
  background: var(--color-bg);
  color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.rt-segment-options input:focus-visible + label {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ---------- Result ---------- */

.rt-result {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  padding: 1rem 1.1rem 1.1rem;
}

.rt-result-title {
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.rt-rows {
  margin: 0;
}

.rt-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.35rem 0;
}

.rt-row dt {
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.rt-row dd {
  margin: 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: right;
  overflow-wrap: anywhere;
}

.rt-total {
  margin-top: 0.6rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.15rem;
}

.rt-total-label {
  align-self: flex-start;
  font-weight: 700;
  color: var(--color-text);
}

.rt-total-value {
  font-size: 1.75rem;
  line-height: 1.3;
  font-weight: 800;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  text-align: right;
  overflow-wrap: anywhere;
}

.rt-error {
  margin: 0;
  padding: 0.75rem 0.9rem;
  border-left: 4px solid var(--rt-color-error);
  border-radius: 6px;
  background: var(--color-bg);
  color: var(--color-text);
  font-weight: 600;
  word-break: keep-all;
}

.rt-error::before {
  content: "⚠ ";
  color: var(--rt-color-error);
}

.rt-excess-reason {
  margin: 0 0 0.25rem;
  font-size: 0.9rem;
  color: var(--color-text);
  text-align: right;
  word-break: keep-all;
}

.rt-excess-reason::before {
  content: "⚠ ";
  color: var(--rt-color-error);
}

.rt-row-excess.rt-has-excess dd {
  padding-right: 0.5rem;
  border-right: 3px solid var(--rt-color-error);
}

.rt-note {
  margin: 0.9rem 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  word-break: keep-all;
}

.rt-disclaimer {
  margin: 0.9rem 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  word-break: keep-all;
}

@media (min-width: 600px) {
  .rt-title {
    font-size: 1.75rem;
  }
  .rt-total-value {
    font-size: 2rem;
  }
}

/* ---------- 이렇게 계산해요 / 자주 묻는 질문 / 관련 글 ---------- */

.rt-explain,
.rt-faq {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  padding: 1rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.7;
  word-break: keep-all;
  color: var(--color-text);
}

.rt-explain-title,
.rt-faq-title {
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.rt-explain-lead {
  margin: 0 0 0.5rem;
  color: var(--color-text-secondary);
}

.rt-explain-steps,
.rt-explain-notes {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.25rem;
}

.rt-explain-steps li,
.rt-explain-notes li {
  margin-bottom: 0.4rem;
}

.rt-formula {
  display: block;
  margin-top: 0.25rem;
  padding: 0.2rem 0.5rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.rt-example {
  background: var(--color-tag-bg);
  border-radius: var(--rt-radius);
  padding: 0.75rem 0.9rem;
  margin: 0.75rem 0;
}

.rt-example-title {
  margin: 0 0 0.4rem;
  color: var(--color-text);
}

.rt-example-title strong {
  color: var(--color-tag-text);
}

.rt-example-rows {
  margin: 0;
}

.rt-example-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.3rem 0;
  border-top: 1px solid var(--color-border);
}

.rt-example-row:first-child {
  border-top: 0;
}

.rt-example-row dt {
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.rt-example-row dd {
  margin: 0;
  min-width: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.rt-explain-sub {
  margin: 0.75rem 0 0;
}

.rt-explain-notes {
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

.rt-faq {
  padding-bottom: 0.25rem;
}

.rt-faq-item {
  border-top: 1px solid var(--color-border);
}

.rt-faq-q {
  cursor: pointer;
  font-weight: 600;
  min-height: var(--rt-touch);
  display: flex;
  align-items: center;
  padding: 0.4rem 0;
  list-style-position: inside;
}

.rt-faq-q::-webkit-details-marker {
  margin-right: 0.4rem;
}

.rt-faq-q:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.rt-faq-item[open] .rt-faq-q {
  border-bottom: 1px solid var(--color-border);
}

.rt-faq-a {
  margin: 0.5rem 0 1rem;
  color: var(--color-text);
}

.rt-related {
  margin: 1.25rem 0 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-secondary);
  word-break: keep-all;
}

.rt-related a {
  color: var(--color-accent);
}

/* FAQ 질문 앞 펼침 표시: summary가 flex라 기본 삼각형(::marker)이 보이지 않아 직접 그린다 */
.rt-faq-q {
  list-style: none;
}

.rt-faq-q::-webkit-details-marker {
  display: none;
}

.rt-faq-q::before {
  content: "▸";
  flex-shrink: 0;
  width: 1.1em;
  color: var(--color-accent);
}

.rt-faq-item[open] .rt-faq-q::before {
  content: "▾";
}

/* ---------- 월세 계산기 전용 ---------- */

/* 자격 체크 */
.rt-checks {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  padding: 0.9rem 1rem 0.25rem;
  margin-bottom: 1.5rem;
}

.rt-checks-title {
  font-size: 1.1rem;
  margin: 0 0 0.75rem;
  color: var(--color-text);
}

.rt-check {
  margin-bottom: 1rem;
}

.rt-check-q {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
  padding: 0;
  color: var(--color-text);
  word-break: keep-all;
}

.rt-check-hint {
  margin: 0 0 0.4rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  word-break: keep-all;
}

.rt-check .rt-segment-options {
  background: var(--color-bg);
}

.rt-check .rt-segment-options input:checked + label {
  background: var(--color-surface);
}

.rt-business-note {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  word-break: keep-all;
}

.rt-hint-left {
  text-align: left;
  min-height: 0;
}

/* 개월 수 */
.rt-months-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.rt-months-wrap {
  flex: 0 0 7.5rem;
}

.rt-months-wrap .rt-input {
  padding-right: 3.25rem;
}

.rt-months-quick {
  flex: 1 1 12rem;
  margin-top: 0;
}

/* 결정세액 (선택) */
.rt-extra {
  border: 1px dashed var(--color-border);
  border-radius: var(--rt-radius);
  padding: 0 1rem;
}

.rt-extra summary {
  cursor: pointer;
  font-weight: 600;
  min-height: var(--rt-touch);
  display: flex;
  align-items: center;
  color: var(--color-accent);
  list-style: none;
  word-break: keep-all;
}

.rt-extra summary::-webkit-details-marker {
  display: none;
}

.rt-extra summary::before {
  content: "▸";
  flex-shrink: 0;
  width: 1.1em;
}

.rt-extra[open] summary::before {
  content: "▾";
}

.rt-extra summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.rt-extra-body {
  margin: 0.5rem 0 1rem;
}

/* 결과 보조 */
.rt-total-sub {
  margin: 0.15rem 0 0;
  font-size: 0.95rem;
  color: var(--color-text);
  text-align: right;
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.rt-total-sub strong {
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.rt-limit-box,
.rt-cash-box {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  background: var(--color-tag-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--rt-radius);
  color: var(--color-text);
}

.rt-limit-title,
.rt-cash-title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-tag-text);
}

.rt-row-strong dd {
  color: var(--color-accent);
  font-size: 1.15rem;
}

.rt-row dt {
  flex-shrink: 1;
  min-width: 0;
  word-break: keep-all;
}

.rt-row dd {
  flex-shrink: 0;
  max-width: 60%;
}

/* 대상 아님 */
.rt-no-title {
  margin: 0 0 0.4rem;
  padding: 0.6rem 0.9rem;
  border-left: 4px solid var(--rt-color-error);
  border-radius: 6px;
  background: var(--color-bg);
  font-weight: 700;
  color: var(--color-text);
}

.rt-no-reasons {
  margin: 0.5rem 0;
  padding-left: 1.25rem;
  color: var(--color-text);
  word-break: keep-all;
}

.rt-no-reasons li {
  margin-bottom: 0.25rem;
}

.rt-no-fix {
  margin: 0.25rem 0 0;
  font-weight: 600;
  color: var(--color-text);
  word-break: keep-all;
}

.rt-cash-text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  word-break: keep-all;
}