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

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

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

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

.fx-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;
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

/* 라벨 왼쪽 · 작은 입력칸 오른쪽 (스프레드, 우대율) */
.fx-field-inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.fx-field-inline .fx-label {
  margin-bottom: 0;
  word-break: keep-all;
}

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

.fx-input-wrap-small {
  flex: 0 0 8.5rem;
  max-width: 50%;
}

.fx-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(--fx-radius);
  -webkit-appearance: none;
  appearance: none;
}

.fx-input-wrap-small .fx-input {
  padding-right: 2.25rem;
}

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

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

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

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

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

.fx-chip {
  flex: 1 1 auto;
  min-width: 0;
  min-height: var(--fx-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;
}

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

.fx-chip-unit {
  margin-left: 0.15rem;
  font-size: 0.8rem;
  font-weight: 500;
}

.fx-quick-pref .fx-chip {
  flex: 1 1 0;
  padding: 0 0.25rem;
}

.fx-chip[aria-pressed="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
}

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

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

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

.fx-segment-options label {
  flex: 1 1 0;
  min-width: 0;
  min-height: var(--fx-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;
}

/* 통화 4칸: 좁으면 2×2로 줄바꿈 (flex-wrap은 3+1로 깨져 grid 사용) */
.fx-segment-currency {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.fx-segment-currency label {
  white-space: nowrap;
}

@media (max-width: 374px) {
  .fx-segment-currency {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.fx-segment-currency label span {
  margin-left: 0.25rem;
}

.fx-seg-sub {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
}

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

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

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

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

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

.fx-rows {
  margin: 0;
}

.fx-row {
  display: flex;
  flex-wrap: wrap; /* 긴 금액은 숫자 중간이 아니라 통째로 다음 줄로 */
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.35rem 0;
}

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

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

.fx-row-strong dt {
  color: var(--color-text);
  font-weight: 700;
}

.fx-row-strong dd {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
}

.fx-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;
}

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

.fx-total-value {
  max-width: 100%;
  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;
}

.fx-saved-note {
  margin: 0.25rem 0 0;
  align-self: stretch;
  padding: 0.6rem 0.8rem;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  word-break: keep-all;
}

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

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

.fx-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) {
  .fx-title {
    font-size: 1.75rem;
  }
  .fx-total-value {
    font-size: 2rem;
  }
}

/* ---------- 자동 환율 (rates.json) ---------- */

.fx-hint.fx-rate-source {
  color: var(--color-text-secondary);
}

.fx-hint.fx-rate-stale {
  color: var(--color-text);
  font-weight: 600;
}

.fx-rate-reset-wrap {
  display: flex;
  justify-content: flex-end;
}

.fx-rate-reset {
  flex: 0 1 auto;
  margin-top: 0.4rem;
  max-width: 100%;
  white-space: normal;
  word-break: keep-all;
}

.fx-rate-reset[hidden] {
  display: none;
}

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

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

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

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

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

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

.fx-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;
}

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

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

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

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

.fx-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);
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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