/**
 * style.css
 * Potens. 디자인 가이드(다크 블루 #15237A / 미디엄 블루 #2F497D / 오렌지 #F26300 /
 * 텍스트 그레이 #272727) 기반. 상단 배너 등 넓은 면적에 짙은 네이비를 그대로
 * 칠하면 무거워 보일 수 있어, 배경은 흰색~연회색을 기본으로 하고 네이비/오렌지는
 * 텍스트·아이콘·강조 포인트로만 절제해서 사용한다.
 */

:root {
  --navy: #15237a;
  --blue: #2f497d;
  --orange: #f26300;
  --text: #272727;
  --text-secondary: #6b7280;

  --bg: #fafafa;
  --card-bg: #ffffff;
  --header-bg: #ffffff;
  --border: #e7e7ea;
  --accent: var(--navy);
  --accent-light: #eef1fb;
  --accent-soft: #f4f6fc;

  --tag-key: #b45309;
  --tag-key-bg: #fef3c7;
  --tag-oauth: #6d28d9;
  --tag-oauth-bg: #ede9fe;
  --tag-no: #067a5a;
  --tag-no-bg: #dcf5ea;
  --tag-other: #64748b;
  --tag-other-bg: #f1f5f9;

  --shadow: 0 1px 2px rgba(21, 35, 122, 0.04), 0 4px 16px rgba(21, 35, 122, 0.05);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1220;
    --card-bg: #171a2b;
    --header-bg: #12142200;
    --border: #2a2e45;
    --text: #e7e8f2;
    --text-secondary: #9497b0;
    --accent: #8fa2ff;
    --accent-light: #232a4d;
    --accent-soft: #1b2038;
    --orange: #ff8a3d;
    --tag-key: #fbbf24;
    --tag-key-bg: #3a2f10;
    --tag-oauth: #c4b5fd;
    --tag-oauth-bg: #2a2147;
    --tag-no: #6ee7b7;
    --tag-no-bg: #0f2f24;
    --tag-other: #9ca3af;
    --tag-other-bg: #22263a;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 18px rgba(0, 0, 0, 0.25);
  }
}
:root[data-theme="dark"] {
  --bg: #0f1220;
  --card-bg: #171a2b;
  --header-bg: #12142200;
  --border: #2a2e45;
  --text: #e7e8f2;
  --text-secondary: #9497b0;
  --accent: #8fa2ff;
  --accent-light: #232a4d;
  --accent-soft: #1b2038;
  --orange: #ff8a3d;
  --tag-key: #fbbf24;
  --tag-key-bg: #3a2f10;
  --tag-oauth: #c4b5fd;
  --tag-oauth-bg: #2a2147;
  --tag-no: #6ee7b7;
  --tag-no-bg: #0f2f24;
  --tag-other: #9ca3af;
  --tag-other-bg: #22263a;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 18px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ---------- Header ---------- */
.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 24px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand img.logo {
  height: 22px;
  width: auto;
  display: block;
}
.brand .divider {
  width: 1px;
  height: 20px;
  background: var(--border);
}
.brand .app-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--navy);
  letter-spacing: -0.01em;
}
:root[data-theme="dark"] .brand .app-name { color: var(--accent); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand .app-name { color: var(--accent); }
}

.header-inner .tagline {
  margin-left: auto;
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: none;
}
@media (min-width: 720px) {
  .header-inner .tagline { display: block; }
}

.hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 6px 24px 22px;
}
.hero h1 {
  margin: 0 0 8px;
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.02em;
}
:root[data-theme="dark"] .hero h1 { color: var(--text); }
.hero p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 640px;
  line-height: 1.55;
}
.hero .accent-dot { color: var(--orange); }

/* ---------- Mode tabs ---------- */
.mode-tabs {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 6px;
}
.mode-tab {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 10px 10px 0 0;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}
.mode-tab:hover { color: var(--navy); }
:root[data-theme="dark"] .mode-tab:hover { color: var(--text); }
.mode-tab.active {
  color: var(--navy);
  border-bottom: 2px solid var(--orange);
}
:root[data-theme="dark"] .mode-tab.active { color: var(--text); }

/* ---------- Controls (search view) ---------- */
.controls {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 24px 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
}

.search-row { display: flex; gap: 10px; flex-wrap: wrap; }

.search-box { flex: 1 1 300px; position: relative; }
.search-box input {
  width: 100%;
  padding: 11px 14px 11px 40px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.search-box input:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px var(--accent-light);
}
.search-box svg {
  position: absolute; left: 13px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--text-secondary); pointer-events: none;
}

select {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
}

.auth-filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.auth-filters .label { font-size: 0.82rem; color: var(--text-secondary); margin-right: 2px; }
.chip {
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-secondary);
  font-size: 0.82rem;
  cursor: pointer;
  user-select: none;
  transition: all 0.12s;
}
.chip:hover { border-color: var(--navy); }
.chip.active { background: var(--navy); border-color: var(--navy); color: #fff; }

.meta-row {
  display: flex; justify-content: space-between; align-items: center;
  max-width: 1180px; margin: 0 auto; padding: 4px 24px 4px;
  color: var(--text-secondary); font-size: 0.85rem;
}
.stats { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.stat-pill b { color: var(--text); }
.rank-badge {
  font-size: 0.72rem;
  color: var(--orange);
  background: #fff3ea;
  border: 1px solid #ffdcc0;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 600;
}
:root[data-theme="dark"] .rank-badge { background: #3a2210; border-color: #5a3616; }

.clear-btn {
  background: none; border: none; color: var(--navy); font-size: 0.85rem;
  cursor: pointer; padding: 4px 8px;
}
:root[data-theme="dark"] .clear-btn { color: var(--accent); }
.clear-btn:hover { text-decoration: underline; }

main { max-width: 1180px; margin: 0 auto; padding: 8px 24px 60px; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 8px;
  position: relative;
}
.card.ai-pick { border-color: var(--orange); box-shadow: 0 0 0 1px var(--orange), var(--shadow); }
.ai-pick-badge {
  position: absolute; top: -9px; right: 14px;
  background: var(--orange); color: #fff; font-size: 0.68rem; font-weight: 700;
  padding: 2px 9px; border-radius: 999px; letter-spacing: 0.02em;
}

.card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.card-title { font-size: 1.02rem; font-weight: 650; margin: 0; }
.card-title a { color: var(--text); text-decoration: none; }
.card-title a:hover { color: var(--navy); }
:root[data-theme="dark"] .card-title a:hover { color: var(--accent); }

.category-tag {
  font-size: 0.72rem; color: var(--navy); background: var(--accent-light);
  padding: 3px 8px; border-radius: 6px; white-space: nowrap; flex-shrink: 0;
}
:root[data-theme="dark"] .category-tag { color: var(--accent); }

.card-desc { color: var(--text-secondary); font-size: 0.88rem; line-height: 1.45; margin: 0; flex: 1; }

/* 검색어 강조 표시 */
mark.hl {
  background: #ffe3b3;
  color: inherit;
  padding: 0 1px;
  border-radius: 3px;
}
:root[data-theme="dark"] mark.hl { background: #5c4110; color: var(--text); }

/* BM25 관련도 바 */
.relevance-bar {
  height: 3px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
  margin-top: -2px;
}
.relevance-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--orange), var(--navy));
  border-radius: 999px;
}

/* AI 상세설명("🔎 AI로 자세히 알아보기") */
.ai-detail-row { display: flex; flex-direction: column; gap: 6px; }
.ai-detail-btn {
  align-self: flex-start;
  border: 1px dashed var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.76rem;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.ai-detail-btn:hover:not(:disabled) { border-color: var(--navy); color: var(--navy); }
:root[data-theme="dark"] .ai-detail-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.ai-detail-btn:disabled { opacity: 0.6; cursor: default; }
.ai-detail-result {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  white-space: pre-wrap;
}
.ai-detail-result.loading { opacity: 0.7; font-style: italic; }
.ai-detail-result.error { background: #fef2f2; border-color: #fecaca; color: #b91c1c; }
:root[data-theme="dark"] .ai-detail-result.error { background: #2b1414; border-color: #5c2323; color: #fca5a5; }

.card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 4px; flex-wrap: wrap; gap: 8px; }
.badges { display: flex; gap: 6px; flex-wrap: wrap; }
.badge { font-size: 0.72rem; font-weight: 600; padding: 3px 9px; border-radius: 999px; }
.badge.auth-apiKey { color: var(--tag-key); background: var(--tag-key-bg); }
.badge.auth-OAuth { color: var(--tag-oauth); background: var(--tag-oauth-bg); }
.badge.auth-No { color: var(--tag-no); background: var(--tag-no-bg); }
.badge.auth-other { color: var(--tag-other); background: var(--tag-other-bg); }

.flag { font-size: 0.72rem; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 3px; }
.flag.on { color: var(--tag-no); }
.flag.off { color: var(--text-secondary); opacity: 0.5; }

.visit-link { font-size: 0.8rem; color: var(--navy); text-decoration: none; font-weight: 600; white-space: nowrap; }
:root[data-theme="dark"] .visit-link { color: var(--accent); }
.visit-link:hover { text-decoration: underline; }

.footer-actions { display: flex; align-items: center; gap: 8px; }
.copy-btn {
  border: 1px solid var(--border);
  background: var(--card-bg);
  border-radius: 8px;
  width: 26px; height: 26px;
  font-size: 0.78rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: border-color 0.15s, color 0.15s;
}
.copy-btn:hover { border-color: var(--navy); color: var(--navy); }
:root[data-theme="dark"] .copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { border-color: var(--tag-no); }

/* 카드 내 "사용법 보기" 아코디언 */
.usage-details {
  margin-top: 2px;
  border-top: 1px dashed var(--border);
  padding-top: 8px;
}
.usage-details summary {
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--navy);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
}
:root[data-theme="dark"] .usage-details summary { color: var(--accent); }
.usage-details summary::-webkit-details-marker { display: none; }
.usage-details summary::before {
  content: '▸';
  font-size: 0.7rem;
  transition: transform 0.15s;
}
.usage-details[open] summary::before { transform: rotate(90deg); }
.usage-auth-tag { color: var(--text-secondary); font-weight: 500; }
.usage-body { margin-top: 8px; font-size: 0.8rem; color: var(--text-secondary); line-height: 1.55; }
.usage-body ol { margin: 6px 0; padding-left: 18px; }
.usage-body li { margin-bottom: 4px; }
.usage-caveat { margin: 0 0 6px; font-size: 0.76rem; opacity: 0.9; }
.usage-caveat b { color: var(--text); }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }

/* ---------- 인증 방식 설명(레전드) ---------- */
.auth-legend { position: relative; }
.auth-legend summary {
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--navy);
  font-weight: 600;
  list-style: none;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px dashed var(--border);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
:root[data-theme="dark"] .auth-legend summary { color: var(--accent); }
.auth-legend summary::-webkit-details-marker { display: none; }
.auth-legend summary:hover { border-color: var(--navy); }
:root[data-theme="dark"] .auth-legend summary:hover { border-color: var(--accent); }
.auth-legend-body {
  position: absolute;
  z-index: 20;
  top: calc(100% + 6px);
  left: 0;
  width: min(420px, 86vw);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}
.auth-legend-body dl { margin: 0; }
.auth-legend-body dt {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--navy);
  margin-top: 10px;
}
:root[data-theme="dark"] .auth-legend-body dt { color: var(--accent); }
.auth-legend-body dt:first-child { margin-top: 0; }
.auth-legend-body dd {
  margin: 3px 0 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---------- AI assist view ---------- */
.ai-view { max-width: 820px; margin: 0 auto; padding: 26px 24px 60px; }
.ai-intro {
  background: var(--accent-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.ai-intro b { color: var(--navy); }
:root[data-theme="dark"] .ai-intro b { color: var(--accent); }

.ai-form { display: flex; flex-direction: column; gap: 10px; }
.ai-form textarea {
  width: 100%;
  min-height: 92px;
  resize: vertical;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  line-height: 1.5;
}
.ai-form textarea:focus { border-color: var(--navy); box-shadow: 0 0 0 3px var(--accent-light); }

.ai-textarea-wrap { position: relative; }
.ai-char-counter {
  position: absolute;
  right: 12px;
  bottom: 10px;
  font-size: 0.72rem;
  color: var(--text-secondary);
  opacity: 0.75;
  pointer-events: none;
}

.ai-warning {
  background: #fff7e6;
  border: 1px solid #ffe0a3;
  color: #92620a;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.84rem;
  line-height: 1.55;
  margin-bottom: 16px;
}
:root[data-theme="dark"] .ai-warning { background: #322506; border-color: #5c4712; color: #ffd479; }

.ai-form-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.ai-examples { display: flex; gap: 6px; flex-wrap: wrap; }
.example-chip {
  font-size: 0.78rem; color: var(--text-secondary); background: var(--card-bg);
  border: 1px dashed var(--border); border-radius: 999px; padding: 5px 11px; cursor: pointer;
}
.example-chip:hover { border-color: var(--navy); color: var(--navy); }
:root[data-theme="dark"] .example-chip:hover { color: var(--accent); border-color: var(--accent); }

.ai-submit {
  border: none; background: var(--navy); color: #fff; font-weight: 650;
  font-size: 0.92rem; padding: 11px 22px; border-radius: 10px; cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}
.ai-submit:hover { background: #101c63; }
.ai-submit:disabled { opacity: 0.55; cursor: not-allowed; }

.ai-result { margin-top: 22px; display: none; }
.ai-result.visible { display: block; }
.ai-answer {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; font-size: 0.92rem; line-height: 1.7; white-space: pre-wrap;
  box-shadow: var(--shadow);
}
.ai-answer strong { color: var(--navy); }
:root[data-theme="dark"] .ai-answer strong { color: var(--accent); }
.ai-answer .api-mention {
  color: var(--navy); background: var(--accent-light); padding: 1px 6px; border-radius: 5px; font-weight: 650;
}
:root[data-theme="dark"] .ai-answer .api-mention { color: var(--accent); }
.ai-answer .api-mention.external {
  color: var(--text-secondary);
  background: var(--tag-other-bg);
  font-weight: 600;
}
.ai-answer .external-tag {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 5px;
  margin-left: 2px;
}

.ai-external-note {
  margin-top: 10px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-secondary);
  background: var(--tag-other-bg);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 10px 14px;
}
.ai-external-note b { color: var(--text); }

.ai-error {
  background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c;
  padding: 14px 16px; border-radius: 12px; font-size: 0.88rem; margin-top: 16px;
}
:root[data-theme="dark"] .ai-error { background: #2b1414; border-color: #5c2323; color: #fca5a5; }

.ai-loading { display: flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 0.88rem; margin-top: 16px; }
.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid var(--border); border-top-color: var(--navy);
  animation: spin 0.7s linear infinite;
}
:root[data-theme="dark"] .spinner { border-top-color: var(--accent); }
@keyframes spin { to { transform: rotate(360deg); } }

.ai-candidates-title { margin: 26px 0 10px; font-size: 0.86rem; font-weight: 650; color: var(--text-secondary); }

footer { text-align: center; padding: 22px; color: var(--text-secondary); font-size: 0.78rem; }
footer a { color: var(--navy); }
:root[data-theme="dark"] footer a { color: var(--accent); }

[hidden] { display: none !important; }