/* ============================================================
   story-feed.css — 싱클 스토리 (Wanted DS / iOS 클론)
   원본: claude.ai/design "Syncle Story"(web) + "Syncle Story iOS v2" (51446ffe)
   Wanted DS 런타임 없이 순수 CSS. 토큰: css/wanted-ds.css
   공용 셸(사이드바/헤더/푸터) 내부에 메인 콘텐츠만 교체.
   데스크톱=매거진 매소니(3열) / 모바일=iOS 단일열 플랫리스트.
   ============================================================ */

.sf-stage {
  background: var(--ws-bg, #fff);
  color: var(--ws-text-normal);
  font-family: var(--font-sans);
}
/* 헤더(.kh 콘텐츠: 로고 x=56, 우측 x=1216)와 좌우 정렬: max-width 1240 + 좌우 40 */
.sf-main { max-width: 1240px; margin: 0 auto; padding: 32px 40px 64px; }

/* 라이브 도트 */
@keyframes sfPulse { 0% { transform: scale(.5); opacity: .6; } 100% { transform: scale(2.4); opacity: 0; } }
.sf-live-dot { position: relative; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--ws-negative); flex: none; }
.sf-live-dot::after { content: ''; position: absolute; inset: -3px; border-radius: 50%; border: 1.5px solid var(--ws-negative); opacity: .5; animation: sfPulse 1.8s ease-out infinite; }
@media (prefers-reduced-motion: reduce) { .sf-live-dot::after { animation: none; } }

/* 헤더 블록 */
.sf-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.sf-kicker { color: var(--ws-primary); letter-spacing: .06em; margin-bottom: 6px; font: 600 13px/1.4 var(--font-sans); }
.sf-title { color: var(--ws-text-strong); margin: 0 0 9px; font: 700 32px/44px var(--font-sans); letter-spacing: -0.0253em; }
.sf-subtitle { color: var(--ws-text-neutral); display: flex; align-items: center; gap: 8px; font: 500 15px/22px var(--font-sans); }

/* 히어로 (Featured) */
.sf-hero-section { margin-bottom: 30px; }
.sf-hero {
  display: flex; flex-wrap: wrap; gap: 20px; padding: 16px; cursor: pointer;
  background: var(--ws-surface-card); border-radius: 20px; box-shadow: var(--ws-shadow-emphasize);
  text-decoration: none; color: inherit;
}
.sf-hero-cover {
  flex: 1 1 360px; min-width: 280px; position: relative; aspect-ratio: 16/10; border-radius: 14px; overflow: hidden;
  background: #e6ecf7; box-shadow: inset 0 0 0 1px var(--ws-line-alt); display: flex; align-items: center; justify-content: center;
  background-size: cover; background-position: center;
}
.sf-hero-cover .ph { opacity: .26; color: var(--ws-text-assistive); }
.sf-hero-locate {
  position: absolute; left: 12px; bottom: 12px; display: inline-flex; align-items: center; gap: 4px; height: 26px;
  padding: 0 9px; border-radius: 8px; background: rgba(255,255,255,.92); color: var(--ws-text-neutral);
  font: 500 13px/1 var(--font-sans); white-space: nowrap;
}
.sf-hero-body { flex: 1 1 340px; min-width: 260px; display: flex; flex-direction: column; }
.sf-hero-tags { display: flex; align-items: center; gap: 6px; margin-bottom: 11px; }
.sf-tag {
  display: inline-flex; align-items: center; height: 24px; padding: 0 9px; border-radius: 8px;
  background: var(--ws-fill); color: var(--ws-text-neutral); font: 500 13px/1 var(--font-sans); white-space: nowrap;
}
.sf-badge-new {
  display: inline-flex; align-items: center; height: 20px; padding: 0 7px; border-radius: 6px;
  background: var(--ws-primary); color: #fff; font: 700 11px/1 var(--font-sans); white-space: nowrap;
}
.sf-hero-title { color: var(--ws-text-strong); margin: 0 0 10px; font: 700 24px/32px var(--font-sans); letter-spacing: -0.023em; }
.sf-hero-excerpt { color: var(--ws-text-neutral); margin: 0 0 16px; font: 500 15px/22px var(--font-sans); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sf-hero-foot { margin-top: auto; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sf-avatar {
  width: 48px; height: 48px; border-radius: 50%; flex: none; overflow: hidden; background: var(--ws-fill);
  display: flex; align-items: center; justify-content: center; color: var(--ws-text-alternative); font: 700 15px/1 var(--font-sans);
}
.sf-avatar.sm { width: 40px; height: 40px; border-radius: 10px; font-size: 15px; box-shadow: inset 0 0 0 1px var(--ws-line-alt); }
.sf-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sf-hero-host { min-width: 0; }
.sf-hero-host .n { font: 600 14px/20px var(--font-sans); color: var(--ws-text-strong); white-space: nowrap; }
.sf-hero-host .d { font: 500 12px/16px var(--font-sans); color: var(--ws-text-assistive); }
.sf-hero-metrics { margin-left: auto; display: flex; align-items: center; gap: 14px; }

/* 실시간 rail (최근 소식 한 줄) */
.sf-rail-section { margin-bottom: 30px; }
.sf-rail-head { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.sf-rail-head .t { color: var(--ws-text-strong); font: 600 20px/28px var(--font-sans); }
.sf-rail-head .s { color: var(--ws-text-assistive); font: 500 14px/20px var(--font-sans); }
.sf-rail { display: flex; gap: 12px; overflow-x: auto; padding: 2px 4px 8px 0; -webkit-overflow-scrolling: touch; }
.sf-rail::-webkit-scrollbar { height: 0; }
.sf-rail-card {
  flex: 0 0 246px; background: var(--ws-bg); border-radius: 12px; box-shadow: inset 0 0 0 1px var(--ws-line);
  padding: 13px; cursor: pointer; text-decoration: none; color: inherit;
}
.sf-rail-top { display: flex; align-items: center; gap: 8px; margin-bottom: 9px; }
.sf-rail-avatar { width: 32px; height: 32px; border-radius: 50%; flex: none; overflow: hidden; background: var(--ws-fill); display: flex; align-items: center; justify-content: center; color: var(--ws-text-alternative); font: 600 12px/1 var(--font-sans); }
.sf-rail-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sf-rail-host { min-width: 0; flex: 1; }
.sf-rail-host .n { font: 600 13px/18px var(--font-sans); color: var(--ws-text-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sf-rail-host .d { font: 500 11px/14px var(--font-sans); color: var(--ws-text-assistive); }
.sf-rail-text { color: var(--ws-text-neutral); font: 500 15px/22px var(--font-sans); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 필터 칩 행 */
.sf-filter-row { margin-bottom: 20px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.sf-chips { display: flex; gap: 8px; flex-wrap: wrap; flex: 1; }
.sf-chip {
  display: inline-flex; align-items: center; height: 32px; padding: 0 13px; border: none; border-radius: 999px;
  font: 500 14px/1 var(--font-sans); cursor: pointer; white-space: nowrap;
  background: var(--ws-fill); color: var(--ws-text-neutral); box-shadow: inset 0 0 0 1px transparent;
  transition: background .12s, box-shadow .12s, color .12s;
}
.sf-chip.active { background: var(--blue-95); color: var(--ws-primary); box-shadow: inset 0 0 0 1px var(--ws-primary); font-weight: 700; }

/* 카드 피드 (행 우선 그리드 — 데스크톱 4열, 좌→우로 채우고 다음 줄) */
/* align-items:start = 유형별 카드가 각자 자연 높이(커버형 큼/텍스트형 작음), 동일높이 강제 안 함 */
.sf-feed { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; align-items: start; }
.sf-card {
  display: flex; flex-direction: column;
  background: var(--ws-surface-card); border-radius: 16px; box-shadow: inset 0 0 0 1px var(--ws-line);
  padding: 16px; cursor: pointer; text-decoration: none; color: inherit;
  transition: box-shadow .2s var(--ws-ease-standard, cubic-bezier(.4,0,.2,1)), transform .2s var(--ws-ease-standard, cubic-bezier(.4,0,.2,1));
}
.sf-card:hover { box-shadow: var(--ws-shadow-strong); transform: translateY(-2px); }
.sf-card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.sf-card-host { min-width: 0; flex: 1; }
.sf-card-host .n { display: flex; align-items: center; gap: 6px; }
.sf-card-host .n .name { font: 600 14px/20px var(--font-sans); color: var(--ws-text-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sf-card-host .meta { font: 500 12px/16px var(--font-sans); color: var(--ws-text-assistive); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sf-follow {
  display: inline-flex; align-items: center; justify-content: center; height: 32px; padding: 0 12px; flex: none;
  border: none; border-radius: 8px; font: 600 14px/1 var(--font-sans); cursor: pointer; white-space: nowrap;
  background: transparent; color: var(--ws-text-neutral); box-shadow: inset 0 0 0 1px var(--ws-line); text-decoration: none;
  transition: background .12s, box-shadow .12s, color .12s;
}
.sf-follow:hover { box-shadow: inset 0 0 0 1px var(--ws-line-strong); }
.sf-cover {
  position: relative; aspect-ratio: 16/9; border-radius: 12px; overflow: hidden; margin-bottom: 12px;
  box-shadow: inset 0 0 0 1px var(--ws-line-alt); display: flex; align-items: center; justify-content: center;
  background-size: cover; background-position: center;
}
.sf-cover .ph { opacity: .24; color: var(--ws-text-assistive); }
.sf-cat-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }

/* 유형별 카드 조각 */
/* 프로모션 커버 오버레이 (마감임박) */
.sf-cover-badge {
  position: absolute; left: 10px; top: 10px; display: inline-flex; align-items: center; height: 24px;
  padding: 0 9px; border-radius: 7px; background: var(--ws-negative); color: #fff;
  font: 700 12px/1 var(--font-sans); white-space: nowrap; z-index: 1;
}
/* 이벤트: 날짜 뱃지 + 본문 */
.sf-event-row { display: flex; align-items: flex-start; gap: 12px; }
.sf-event-body { min-width: 0; flex: 1; }
.sf-date-badge {
  flex: none; width: 52px; height: 56px; border-radius: 12px; background: var(--blue-95);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px;
}
.sf-date-badge .m { color: var(--ws-primary); font: 600 12px/1 var(--font-sans); }
.sf-date-badge .d { color: var(--ws-primary); font: 700 22px/1 var(--font-sans); }
.sf-card-title { color: var(--ws-text-strong); margin: 0 0 5px; font: 600 17px/24px var(--font-sans); }
.sf-card-summary { color: var(--ws-text-neutral); margin: 0; font: 500 15px/22px var(--font-sans); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sf-card-foot { display: flex; align-items: center; gap: 16px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--ws-line); color: var(--ws-text-assistive); }
.sf-metric { display: inline-flex; align-items: center; gap: 5px; font: 500 14px/1 var(--font-sans); white-space: nowrap; }
.sf-metric.like { color: var(--ws-text-neutral); border: none; background: none; cursor: default; padding: 0; }

/* 빈 상태 / 더보기 */
.sf-empty { text-align: center; padding: 56px 20px; color: var(--ws-text-assistive); }
.sf-empty .t { color: var(--ws-text-neutral); margin-bottom: 6px; font: 600 20px/28px var(--font-sans); }
.sf-empty .s { font: 500 15px/22px var(--font-sans); }
.sf-more-wrap { display: flex; justify-content: center; margin-top: 30px; }
.sf-more {
  height: 40px; padding: 0 20px; border: none; border-radius: 10px; cursor: pointer;
  background: var(--ws-bg); box-shadow: inset 0 0 0 1px var(--ws-line); color: var(--ws-text-neutral);
  font: 600 14px/1 var(--font-sans);
}
.sf-more:hover { box-shadow: inset 0 0 0 1px var(--ws-line-strong); }

/* 스켈레톤 */
@keyframes sfShimmer { 0% { opacity: .55; } 50% { opacity: 1; } 100% { opacity: .55; } }
.sf-skel { background: var(--ws-fill); border-radius: 12px; animation: sfShimmer 1.3s ease-in-out infinite; }

/* 토스트 */
.sf-toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%) translateY(8px); z-index: 2000;
  background: var(--ws-inverse-bg, #1b1c1e); color: #fff; font: 600 13px/1 var(--font-sans); padding: 11px 18px;
  border-radius: 10px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
}
.sf-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 반응형: 그리드 열 수 (4 → 3 → 2) */
@media (max-width: 1180px) { .sf-feed { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 900px)  { .sf-feed { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ── 모바일 iOS (≤768): 단일열 플랫 리스트 ── */
@media (max-width: 768px) {
  .sf-main { padding: 0 0 28px; max-width: 100%; }
  .sf-head { padding: 12px 16px 0; margin-bottom: 12px; }
  .sf-title { font-size: 26px; line-height: 34px; }
  .sf-followed-toggle { display: none; }
  /* 히어로는 일반 카드처럼 첫 포스트로 흡수 → 데스크톱 전용 처리 */
  .sf-hero-section, .sf-rail-section { display: none; }
  .sf-filter-row { padding: 0; margin-bottom: 0; }
  .sf-chips { flex-wrap: nowrap; overflow-x: auto; padding: 0 16px 12px; gap: 8px; box-shadow: inset 0 -0.5px 0 var(--ws-line); }
  .sf-chips::-webkit-scrollbar { display: none; }
  /* 피드: 단일 컬럼(플랫 포스트 스택), 카드=구분선 */
  .sf-feed { display: block; }
  .sf-card {
    background: transparent; border-radius: 0; box-shadow: none; padding: 13px 16px 12px;
    margin: 0; border-bottom: 1px solid var(--ws-line-alt); transform: none;
  }
  .sf-card:hover { box-shadow: none; transform: none; }
  .sf-card:active { background: var(--ws-fill-alt); }
  .sf-cover { border-radius: 10px; }
  .sf-more-wrap { padding: 20px 16px 0; }
  .sf-empty { padding: 48px 24px; }
}