/* =========================
   Base / Reset (safe minimal)
   ========================= */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }

/* =========================
   Color tokens (SAFE)
   ========================= */
:root{
  --bg: #ededed;
  --text: #1a1a1a;
  --muted: #5e5e5e;
  --rule: #d7d7d7;
  --underline: #c9c9c9;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg: #1a1a1a;
    --text: #c7cacf;
    --muted: #b3b6bb;
    --rule: #2a2a2a;
    --underline: #3a3a3a;
  }
}

/* =========================
   Layout
   ========================= */
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

.wrap{
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
}

/* =========================
   Header (minimal normalization)
   ========================= */
header { margin: 0; padding: 0; }
header > *:last-child { margin-bottom: 0; }

.top__banner{
  position: relative;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

a[aria-label="Go to Home"]{
  display: block;
}

.top__banner img{
  display: block;
  width: 100%;
  height: auto;
}

/* =========================
   Main content spacing
   ========================= */
main.wrap{
  padding: 18px 0 60px;
}

h1, h2, h3{
  line-height: 1.25;
  margin: 18px 0 12px;
}

p{
  margin: 10px 0;
}

/* 링크: 색 고정 + 형광 방지 */
a{
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--underline);
  text-underline-offset: 2px;
}

a:hover{
  text-decoration-color: var(--rule);
}

/* =========================
   DETAILS / SUMMARY
   ========================= */
details{
  display: block;
  margin: 14px 0;
  padding: 0;
  border: 0;
  background: transparent;
}

details > summary{
  display: list-item !important;
  cursor: pointer;
  padding: 0;
  margin: 0;
  border: 0;
  background: transparent;
  list-style-position: outside;
  font-weight: 600;
}

details > summary::-webkit-details-marker{
  display: inline-block !important;
}

details,
details *{
  box-shadow: none !important;
  border-radius: 0 !important;
}

details > summary > svg,
details > summary .icon,
details > summary .badge{
  display: none !important;
}

summary{
  visibility: visible !important;
  opacity: 1 !important;
}

/* =========================
   Home feed — Title
   ========================= */
.feed-title{
  font-size: 1.72rem;
  line-height: 1.28;
  margin-bottom: 6px;
}

@media (max-width: 640px){
  .feed-title{
    font-size: 1.58rem;
  }
}

/* =========================
   Feed meta (Reasoning + Date)
   ========================= */
.feed-meta{
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  opacity: 0.75;
  margin: 6px 0 10px;
  color: var(--muted);
}

.feed-meta .feed-reasoning,
.feed-meta .feed-date{
  white-space: nowrap;
}

/* =========================
   Post list numbering (list page)
   ========================= */
.postlist{
  margin: 14px 0 0;
  padding-left: 0;
  list-style: none !important;
}

.postlist > li{
  list-style: none !important;
  display: flex !important;
  align-items: flex-start;
  gap: 0.4em;
  margin: 10px 0;
  padding: 0;
}

.postlist .postnum{
  display: inline-block;
  width: 2.4em;
  flex: 0 0 2.4em;
  line-height: inherit;
}

.postlist > li a{
  display: inline;
}

@media (max-width: 640px){
  .postlist > li{
    margin: 12px 0 !important;
  }
}

/* =========================
   Dark mode glare reduction (SAFE ADD)
   ========================= */
@media (prefers-color-scheme: dark){
  a:link,
  a:visited{
    color: var(--text);
    text-decoration-color: var(--underline);
  }

  a:hover,
  a:active{
    color: var(--text);
    text-decoration-color: var(--rule);
  }

  a:visited{
    opacity: 0.92;
  }
}