:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1d1b18;
  --muted: #6b665e;
  --line: #e6e1d8;
  --accent: #2f5d50;
  --accent-text: #ffffff;
  --cover-bg: #efebe3;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151412;
    --surface: #1e1c19;
    --text: #ece8e1;
    --muted: #a39d93;
    --line: #34312c;
    --accent: #7fb7a4;
    --accent-text: #10201b;
    --cover-bg: #2a2723;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard",
    "Noto Sans KR", "Malgun Gothic", sans-serif;
  word-break: keep-all;
}
a { color: var(--accent); }
code { font-size: 0.9em; }

.top {
  position: sticky; top: 0; z-index: 2;
  display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center;
  padding: 14px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 1.25rem; text-decoration: none; color: var(--text);
}
.search { display: flex; flex: 1 1 420px; gap: 8px; align-items: center; flex-wrap: wrap; }
.search input[type="search"] {
  flex: 1 1 240px; min-width: 0;
  padding: 10px 12px; font: inherit;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--text);
}
.search button, .more {
  padding: 10px 16px; font: inherit; font-weight: 600;
  border: 0; border-radius: 8px;
  background: var(--accent); color: var(--accent-text); cursor: pointer;
}
.toggle { color: var(--muted); font-size: 0.9rem; white-space: nowrap; }

.layout {
  display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px;
  max-width: 1200px; margin: 0 auto; padding: 20px;
}
.layout:has(.detail:not([hidden])) { grid-template-columns: minmax(0, 1fr) minmax(320px, 440px); }
.status { color: var(--muted); margin: 0 0 12px; }

.results { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.card {
  display: flex; gap: 14px; width: 100%; padding: 10px;
  text-align: left; font: inherit; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
}
.card:hover, .card:focus-visible { border-color: var(--accent); outline: none; }
.card-text { display: flex; flex-direction: column; min-width: 0; }
.card-title { font-weight: 600; }
.card-authors, .card-meta { color: var(--muted); font-size: 0.9rem; }

.cover {
  flex: none; width: 56px; height: 80px; object-fit: cover;
  border-radius: 4px; background: var(--cover-bg);
}
.cover-empty {
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; color: var(--muted); text-align: center;
}
.more { margin: 16px auto 0; display: block; }
.more[hidden] { display: none; }

.detail {
  position: sticky; top: 84px; align-self: start;
  max-height: calc(100vh - 104px); overflow: auto;
  padding: 20px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px;
}
.detail[hidden] { display: none; }
.detail-head { display: flex; gap: 16px; }
.detail-head .cover { width: 96px; height: 138px; }
.detail h2 { margin: 0 0 4px; font-size: 1.25rem; line-height: 1.35; }
.detail h3 { font-size: 1rem; margin: 20px 0 6px; }
.subtitle, .contributors { margin: 0 0 4px; color: var(--muted); }
.close {
  float: right; width: 32px; height: 32px; font-size: 1.25rem; line-height: 1;
  background: none; border: 1px solid var(--line); border-radius: 50%; color: var(--muted); cursor: pointer;
}
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 14px; margin: 18px 0 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.sets { margin: 0; padding-left: 20px; }
.link { padding: 2px 0; font: inherit; color: var(--accent); background: none; border: 0; cursor: pointer; text-align: left; }
.fine { margin: 14px 0 0; font-size: 0.8rem; color: var(--muted); overflow-wrap: anywhere; }

.foot {
  max-width: 1200px; margin: 24px auto 0; padding: 16px 20px 32px;
  border-top: 1px solid var(--line); color: var(--muted); font-size: 0.85rem;
}
.foot p { margin: 4px 0; }

@media (max-width: 760px) {
  .top { padding: 12px 16px; }
  .layout, .layout:has(.detail:not([hidden])) { grid-template-columns: minmax(0, 1fr); padding: 16px; }
  .detail {
    position: fixed; inset: 0; top: auto; z-index: 3;
    max-height: 85vh; border-radius: 16px 16px 0 0;
  }
}