/* ==========================================================
   SnuPhoto 홈 화면 레이아웃 (style.css 위에 덮어씀)
   - 하나의 열(최대 880px), 같은 카드 모양, 같은 버튼 두 종류
   - body.ui 범위에서만 적용
   ========================================================== */

body.ui {
  --radius: 16px;
  --radius-sm: 10px;
  --col: 880px;
  background: var(--bg);
  color: var(--ink);
  margin: 0;
}

body.ui .sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--primary); color: #fff; padding: 8px 14px; border-radius: 8px;
}
.skip-link:focus { top: 12px; }

/* ---------- 상단 바 ---------- */
.topnav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--card) 88%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topnav-inner {
  max-width: var(--col); margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 16px;
}
.brand-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none;
}
.topnav-links { display: flex; gap: 4px; margin-left: 8px; }
.topnav-links a {
  color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 6px 10px; border-radius: 8px;
}
.topnav-links a:hover { color: var(--ink); background: var(--primary-light); }
.topnav-tools { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); cursor: pointer; font-size: 16px; line-height: 1;
}
.lang-select {
  height: 36px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); padding: 0 8px; font-size: 14px;
}

/* ---------- 본문 열 ---------- */
.page { max-width: var(--col); margin: 0 auto; padding: 0 16px 48px; }

/* ---------- 히어로 + 입력창 ---------- */
.hero-block { text-align: center; padding: 56px 0 32px; }
.eyebrow {
  display: inline-block; margin: 0 0 14px; padding: 5px 12px; border-radius: 999px;
  background: var(--primary-light); color: var(--primary); font-size: 13px; font-weight: 600;
}
.hero-block h1 {
  margin: 0 0 10px; font-size: clamp(26px, 5vw, 40px); line-height: 1.2;
  letter-spacing: -0.02em; color: var(--ink);
}
.hero-block .lead { margin: 0 auto 28px; max-width: 560px; font-size: 17px; color: var(--muted); }
.search-bar {
  display: flex; gap: 8px; padding: 8px; max-width: 680px; margin: 0 auto;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}
.search-bar:focus-within { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-light); }
.search-input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
  color: var(--ink); font-size: 16px; padding: 10px 12px;
}
.search-input::placeholder { color: var(--muted); }
.hero-note { margin: 12px 0 0; font-size: 13px; color: var(--muted); }

/* ---------- 버튼 (두 종류) ---------- */
.btn-solid, .btn-quiet {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 44px; padding: 0 18px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 700; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background .15s, border-color .15s, transform .05s;
}
.btn-solid { background: var(--primary); color: #fff; border: 0; }
.btn-solid:hover { background: var(--primary-dark); }
.btn-solid:active { transform: translateY(1px); }
.btn-solid:disabled { opacity: .5; cursor: default; }
.btn-quiet { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-quiet:hover { border-color: var(--muted); }

/* ---------- 카드 ---------- */
.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; margin: 0 0 20px;
}
.panel h2, .promo h2 { margin: 0 0 16px; font-size: 20px; letter-spacing: -0.01em; color: var(--ink); }
.panel-head { display: flex; align-items: center; justify-content: space-between; }

/* 결과가 없을 때 썸네일 영역은 숨김 */
#thumbList:empty { display: none; }

/* ---------- 썸네일 결과 ---------- */
body.ui .stack {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px; margin: 0 0 16px;
}
body.ui .stack .info-badge, body.ui .stack .note-badge { grid-column: 1 / -1; margin: 0; }
body.ui .thumb-card {
  margin: 0; padding: 12px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg); box-shadow: none; display: flex; flex-direction: column; gap: 10px;
}
body.ui .thumb-card:hover { transform: none; border-color: var(--primary); }
body.ui .thumb-card img { width: 100% !important; border-radius: 8px; display: block; }
body.ui .thumb-meta { font-size: 13px; font-weight: 600; color: var(--muted); margin: 0; }
body.ui .thumb-actions { display: flex; gap: 8px; margin: 0; }
body.ui .thumb-actions a {
  flex: 1; text-align: center; padding: 9px 10px; border-radius: 8px;
  font-size: 14px; font-weight: 700; text-decoration: none;
}
body.ui .thumb-actions a.act-primary { background: var(--primary); color: #fff; }
body.ui .thumb-actions a.act-secondary { background: var(--card); color: var(--ink); border: 1px solid var(--line); }

/* ---------- 업스케일 ---------- */
body.ui .upload-zone { border-radius: 12px; padding: 32px 16px; margin: 0; }
body.ui .upload-icon { font-size: 26px; }
.control-row { display: flex; gap: 8px; margin-top: 12px; }
.field-select {
  flex: 1; min-width: 0; height: 44px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--card); color: var(--ink); padding: 0 12px; font-size: 15px;
}
body.ui .preview:empty { display: none; }
body.ui .preview { margin-top: 16px; }

/* ---------- 접는 도움말 ---------- */
.help { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 12px; }
.help summary {
  cursor: pointer; font-size: 14px; font-weight: 600; color: var(--muted); list-style: none;
}
.help summary::-webkit-details-marker { display: none; }
.help summary::after { content: " ▾"; }
.help[open] summary::after { content: " ▴"; }
.help .howto-list { margin: 10px 0 0; padding-left: 20px; font-size: 14px; line-height: 1.9; color: var(--ink); }
.help-note { margin: 8px 0 0; font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ---------- 새 서비스 안내 ---------- */
.promo {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 24px; margin: 0 0 20px; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary-light), var(--card));
  border: 1px solid var(--line);
}
.promo h2 { margin: 6px 0 6px; }
.promo p { margin: 0; color: var(--muted); font-size: 15px; }
.tag-new {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: .04em;
  color: #fff; background: var(--primary); border-radius: 999px; padding: 2px 8px;
}

/* ---------- 소개 · FAQ ---------- */
.about p { margin: 0 0 12px; line-height: 1.8; font-size: 15px; }
.about p:last-child { margin-bottom: 0; }
.about strong { color: var(--primary); }
.muted-text { color: var(--muted); font-size: 14px !important; }
.about a { color: var(--primary); }
body.ui .faq { max-width: none; margin: 0; }
body.ui .faq-item { margin: 0 0 8px; border-radius: 12px; }
body.ui .faq .q { text-align: left; }

/* ---------- 푸터 ---------- */
.site-footer {
  max-width: var(--col); margin: 0 auto; padding: 24px 16px 40px;
  border-top: 1px solid var(--line); text-align: center; color: var(--muted); font-size: 13px;
}
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 16px; margin-bottom: 12px; }
.footer-links a, .footer-lang a { color: var(--muted); text-decoration: none; font-size: 14px; }
.footer-links a:hover, .footer-lang a:hover { color: var(--ink); }
.footer-lang { margin: 0 0 12px; }
.footer-disclaimer { max-width: 640px; margin: 0 auto 10px; line-height: 1.7; font-size: 12px; }
.footer-copy { margin: 0; font-size: 12px; }

/* 예전 레이아웃의 떠 있는 스크롤 버튼은 사용하지 않음 */
body.ui .scroll-buttons { display: none !important; }

/* ---------- 모바일 ---------- */
@media (max-width: 720px) {
  .topnav-links { display: none; }
  .hero-block { padding: 36px 0 24px; }
  .hero-block .lead { font-size: 15px; }
  .search-bar { flex-wrap: wrap; }
  .search-input { flex-basis: 100%; }
  .search-bar .btn-solid, .search-bar .btn-quiet { flex: 1; }
  .panel { padding: 18px; }
  .control-row { flex-wrap: wrap; }
  .field-select { flex-basis: 100%; }
  .control-row .btn-solid, .control-row .btn-quiet { flex: 1; }
  .promo { flex-direction: column; align-items: stretch; text-align: left; }
}

/* ---------- 다듬기 ---------- */
.empty-state {
  margin: 0; padding: 28px 16px; text-align: center; font-size: 14px; color: var(--muted);
  border: 1px dashed var(--line); border-radius: 12px; background: var(--bg);
}
#thumbList:not(:empty) + .empty-state { display: none; }

body.ui .upload-zone { max-width: none; width: 100%; border-width: 2px; box-sizing: border-box; }
body.ui .upload-text strong { color: var(--ink); }

body.ui .thumb-card img { aspect-ratio: 16 / 9; object-fit: cover; height: auto; background: #000; }
body.ui .thumb-card a:first-child { display: block; }

body.ui .stack .info-badge,
body.ui .stack .note-badge {
  display: block; text-align: left; border: 0; border-radius: 8px;
  padding: 8px 12px; font-size: 13px; font-weight: 600;
}
body.ui .stack .info-badge { background: var(--primary-light); color: var(--primary); justify-self: start; }
body.ui .stack .note-badge { background: var(--bg); color: var(--muted); font-weight: 500; }

body.ui .faq .q { color: var(--ink); white-space: normal; justify-content: flex-start; gap: 10px; font-size: 15px; }
body.ui .faq .q > * { text-align: left; }
body.ui .faq .q::after { margin-left: auto; }

/* ==========================================================
   반응형 점검 후 보정 (모바일 ≤720 · 태블릿 721–1023 · 데스크톱 ≥1024)
   ========================================================== */

/* 한국어는 단어 중간에서 줄바꿈하지 않음 */
body.ui h1, body.ui h2, body.ui p, body.ui .lead, body.ui .eyebrow,
body.ui .help, body.ui .faq, body.ui .site-footer { word-break: keep-all; overflow-wrap: anywhere; }

/* 터치 대상 최소 44px */
.icon-btn { width: 44px; height: 44px; }
.lang-select { height: 44px; }
.search-input { min-height: 44px; }
body.ui .thumb-actions a { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; box-sizing: border-box; }

@media (max-width: 720px) {
  /* 상단 메뉴: 숨기지 않고 두 번째 줄에 가로 스크롤로 */
  .topnav-inner { flex-wrap: wrap; row-gap: 4px; padding-bottom: 6px; }
  .topnav-links {
    display: flex; order: 3; flex-basis: 100%; margin: 0 -16px; padding: 0 12px;
    overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch;
  }
  .topnav-links::-webkit-scrollbar { display: none; }
  .topnav-links a { flex: 0 0 auto; padding: 10px 12px; min-height: 44px; box-sizing: border-box; display: inline-flex; align-items: center; }

  /* 기능 요약은 알약 대신 작은 글자로 */
  .eyebrow { background: none; padding: 0; font-size: 12px; margin-bottom: 10px; }

  /* 썸네일은 2열, 버튼은 위아래로 */
  body.ui .stack { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  body.ui .thumb-card { padding: 8px; gap: 8px; }
  body.ui .thumb-meta { font-size: 12px; }
  body.ui .thumb-actions { flex-direction: column; gap: 6px; }
  body.ui .thumb-actions a { font-size: 13px; padding: 8px 6px; }
}

/* 아주 좁은 화면(≤340px)은 1열 */
@media (max-width: 340px) {
  body.ui .stack { grid-template-columns: 1fr; }
}

/* 태블릿도 터치 기기이므로 상단 메뉴 링크도 44px */
.topnav-links a { min-height: 44px; box-sizing: border-box; display: inline-flex; align-items: center; }
.topnav-inner { padding-top: 6px; padding-bottom: 6px; }
@media (max-width: 720px) {
  .topnav-links { justify-content: space-between; gap: 0; padding: 0 8px; }
  .topnav-links a { padding: 10px 8px; font-size: 14px; }
}