/* 옥도단 후원 — 모바일 우선, 시스템 폰트, 문서형 레이아웃 */

:root {
  --text: #191919;
  --muted: #666;
  --line: #ddd;
  --bar-bg: #e8e8e8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.65;
}

.site-header,
main,
footer {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* 헤더 */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.logo {
  height: 2rem;
  width: auto;
}

.logo-text {
  font-weight: 700;
}

.header-note {
  font-size: 0.85rem;
  color: var(--muted);
}

/* 공통 */
section {
  margin: 3.5rem 0;
}

h1 {
  font-size: 2.2rem;
  margin: 0;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.15rem;
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}

.note {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0.75rem 0 0;
}

/* 히어로 */
.hero {
  margin-top: 3rem;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0.25rem 0 1.25rem;
}

.intro {
  margin: 0 0 2rem;
  max-width: 34em;
}

.cta {
  display: inline-block;
  background: var(--text);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  font-family: inherit;
  padding: 0.85rem 2.5rem;
  border: none;
  text-decoration: none;
  cursor: pointer;
}

.cta:hover {
  background: #000;
}

/* 후원 현황 */
.big-amount {
  font-size: clamp(2.6rem, 9vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  line-height: 1.15;
}

.bar {
  height: 6px;
  background: var(--bar-bg);
}

.bar-fill {
  height: 100%;
  width: 0;
  background: var(--text);
}

.percent {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0.5rem 0 1.5rem;
}

.figures {
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.figures div {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.4rem;
  max-width: 22em;
}

.figures dt {
  color: var(--muted);
}

.figures dd {
  margin: 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* 후원하기 */
.account {
  margin: 0 0 1.5rem;
  display: grid;
  gap: 0.4rem;
}

.account div {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.4rem;
  max-width: 22em;
}

.account dt {
  color: var(--muted);
  flex-shrink: 0;
  margin-right: 1rem;
}

.account dd {
  margin: 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  word-break: break-all;
  text-align: right;
}

.copy-feedback {
  font-size: 0.9rem;
  margin: 0.6rem 0 0;
  min-height: 1.5em;
}

/* 사용 내역 */
.expenses {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.expenses th,
.expenses td {
  text-align: left;
  padding: 0.5rem 0.4rem;
  border-bottom: 1px solid var(--line);
}

.expenses th {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}

.expenses .num {
  text-align: right;
  white-space: nowrap;
}

.expenses .empty {
  color: var(--muted);
  text-align: center;
}

/* 푸터 */
footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding-top: 1.25rem;
  padding-bottom: 2.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

footer a {
  color: inherit;
}

/* 접근성 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--text);
  outline-offset: 2px;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* 모바일: CTA 전체 폭 */
@media (max-width: 480px) {
  .cta {
    display: block;
    width: 100%;
    text-align: center;
  }
}