/* ============================================================
   AI 커뮤니티 — mobile-first theme
   레딧(추천 카드 피드) × 쓰레드(아바타 미니멀) × OKKY(게시판 탭/태그)
   Base = mobile; min-width 768px = desktop 확장
   ============================================================ */
:root{
  --bg:#f4f5f7; --card:#fff; --line:#e8eaee; --ink:#14161a; --muted:#7a828e;
  --brand:#3b5bfd; --brand2:#2a3fd0; --vote:#ff4d00; --ok:#0a8f3c;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.05);
  --header-h:52px; --bottomnav-h:58px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI","Malgun Gothic","Apple SD Gothic Neo",sans-serif;
  line-height:1.5;font-size:15px;padding-bottom:calc(var(--bottomnav-h) + 16px)}
a{color:inherit;text-decoration:none}
a:hover{text-decoration:none}
.wrap{max-width:760px;margin:0 auto;padding:0 12px}
.muted{color:var(--muted)}
.small{font-size:.8rem}

/* ---------- header ---------- */
.top{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.top .wrap{display:flex;align-items:center;gap:10px;height:var(--header-h)}
.brand{font-weight:800;font-size:1.1rem;color:var(--brand);white-space:nowrap}
.brand span{color:var(--brand2)}
.spacer{flex:1}
.search{margin:0;flex:1;max-width:220px}
.search input{width:100%;padding:7px 14px;border-radius:999px;font-size:.85rem;
  border:1px solid var(--line);background:var(--bg)}
.search input:focus{outline:none;border-color:var(--brand);background:#fff}
.acct{display:flex;gap:8px;align-items:center;font-size:.88rem;white-space:nowrap}
.btn{background:var(--brand);color:#fff;padding:7px 13px;border-radius:999px;border:0;
  cursor:pointer;font-size:.88rem;font-weight:600}
.btn:hover{background:var(--brand2)}
.btn.big{padding:12px 20px;font-size:1rem;margin-top:8px;border-radius:12px}

/* ---------- board tabs (horizontal scroll, OKKY-style) ---------- */
.boards{display:flex;gap:6px;overflow-x:auto;padding:8px 12px;margin:0 auto;
  max-width:760px;scrollbar-width:none;border-bottom:1px solid var(--line);background:var(--card)}
.boards::-webkit-scrollbar{display:none}
.boards a{flex:0 0 auto;padding:6px 14px;border-radius:999px;font-size:.85rem;
  color:var(--muted);background:var(--bg);font-weight:600}
.boards a:hover{color:var(--brand)}
.boards a.on{background:var(--brand);color:#fff}

/* ---------- list header + sort pills (Reddit) ---------- */
.listhead{display:flex;align-items:baseline;justify-content:space-between;
  margin:18px 0 10px}
.listhead h1{font-size:1.25rem;margin:0}
.sorts{display:flex;gap:4px;background:var(--card);border:1px solid var(--line);
  border-radius:999px;padding:3px}
.sorts a{padding:4px 12px;border-radius:999px;font-size:.82rem;color:var(--muted);font-weight:600}
.sorts a.on{background:var(--ink);color:#fff}

/* ---------- post feed (Reddit cards + Threads avatars) ---------- */
ol.posts{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.post{display:flex;gap:12px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:14px;box-shadow:var(--shadow)}
.votebox{min-width:34px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:2px}
.votebox .score{font-weight:800;font-size:1.05rem;color:var(--vote)}
.votebox .muted{font-size:.68rem}
.votearrow{color:var(--line);font-size:.8rem}
.pmain{min-width:0;flex:1}
.ph-line{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));
  color:#fff;display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:.9rem;flex:0 0 auto}
.avatar.sm{width:22px;height:22px;font-size:.65rem}
.ptitle{font-weight:700;font-size:1.02rem;line-height:1.35;display:block}
.ptitle:hover{color:var(--brand)}
.phost{margin-left:6px;font-size:.75rem;color:var(--brand);white-space:nowrap}
.pbody{font-size:.92rem;margin:5px 0;color:var(--ink);white-space:pre-wrap;line-height:1.5}
.psum{font-size:.84rem;margin:6px 0;background:#f3f5ff;border-left:3px solid var(--brand);
  padding:6px 10px;border-radius:8px;color:#3a4152}
.pmeta{margin-top:7px;display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:.78rem}
.badge{background:#eef0ff;color:var(--brand);padding:1px 8px;border-radius:999px;font-size:.72rem;font-weight:600}
.tag{color:var(--brand2);font-size:.78rem}
.tag:hover{text-decoration:underline}
.poptags{display:flex;flex-wrap:wrap;gap:7px;align-items:center;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;margin-bottom:12px}
.poptags .tag{font-size:.82rem;background:var(--bg);padding:3px 10px;border-radius:999px}

/* ---------- detail ---------- */
.detail{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin:16px 0;box-shadow:var(--shadow)}
.dhead{display:flex;gap:12px;align-items:flex-start}
.dhead h1{margin:2px 0 6px;font-size:1.3rem;line-height:1.3}
.voteform{margin:0}
.votebtn{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 10px;
  cursor:pointer;font-weight:800;color:var(--muted);line-height:1.1;min-width:44px;font-size:.9rem}
.votebtn.voted{background:var(--vote);color:#fff;border-color:var(--vote)}
.linkout{color:var(--brand);word-break:break-all;font-size:.88rem}
.body{white-space:pre-wrap;margin:14px 0;font-size:.95rem}

/* ---------- comments (Threads-style cards) ---------- */
.comments{margin:18px 0}
.comments h2{font-size:1rem;margin:0 0 10px}
.comment{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;margin-bottom:8px}
.comment.accepted{border-color:var(--ok);background:#f0fdf4}
.acc-badge{display:inline-block;background:var(--ok);color:#fff;font-size:.7rem;
  padding:1px 8px;border-radius:999px;margin-bottom:6px;font-weight:600}
.cbody{white-space:pre-wrap;font-size:.92rem}
.inline{display:inline}
.minibtn{background:none;border:1px solid var(--line);color:var(--muted);border-radius:8px;
  padding:3px 9px;cursor:pointer;font-size:.74rem;margin-left:6px}
.minibtn:hover{border-color:var(--brand);color:var(--brand)}
.minibtn.danger{border-color:#fca5a5;color:#dc2626}
.minibtn.danger:hover{background:#dc2626;color:#fff;border-color:#dc2626}
.cform{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.cform.reply{display:none;margin:8px 0 4px}
.cform.reply.show{display:flex}
textarea,input,select{width:100%;padding:10px 12px;border:1px solid var(--line);
  border-radius:10px;font:inherit;background:#fff;font-size:15px}
textarea:focus,input:focus,select:focus{outline:none;border-color:var(--brand)}
.cform button{align-self:flex-start}
.reply-item{margin:8px 0 0 22px;border-left:2px solid var(--line);background:#fafbfc}

/* ---------- forms ---------- */
.bigform,.authcard{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;margin:16px 0;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow)}
.authcard{max-width:400px;margin:40px auto}
.bigform label,.authcard label{display:flex;flex-direction:column;gap:5px;font-size:.88rem;font-weight:600}
.err{color:#dc2626;background:#fef2f2;padding:9px 12px;border-radius:10px;margin:0;font-size:.86rem}
.profile h1{margin-bottom:2px}
footer{padding:22px 16px 8px;text-align:center}

/* ---------- admin ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:14px 0}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 6px;
  text-align:center}
.stat b{display:block;font-size:1.25rem;color:var(--brand)}
.stat span{font-size:.72rem;color:var(--muted)}
.admintbl{width:100%;border-collapse:collapse;font-size:.85rem;background:var(--card);
  border:1px solid var(--line);border-radius:12px;overflow:hidden}
.admintbl th,.admintbl td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left}
.admintbl th{background:var(--bg);font-size:.78rem}
.notice{background:#fef2f2;color:#dc2626;border:1px solid #fecaca;border-radius:10px;
  padding:10px 12px;margin:12px 0;font-size:.88rem}
.notice.danger{background:#fef2f2;color:#dc2626;border-color:#fecaca}

/* ---------- images / report ---------- */
.postimg{max-width:100%;border-radius:10px;border:1px solid var(--line)}
.badge.danger{background:#fef2f2;color:#dc2626}
.hidden-banner{background:#fef2f2;color:#dc2626;border:1px solid #fecaca;border-radius:10px;
  padding:9px 12px;margin:8px 0;font-size:.86rem}
.reportbox{margin-top:10px}
.reportbox summary{cursor:pointer;display:inline-block;color:var(--muted);font-size:.82rem}
.reportbox input{width:100%;margin:6px 0}
.empty{padding:44px 0;text-align:center;color:var(--muted)}

/* ---------- mobile bottom nav (Threads-style) ---------- */
.bottomnav{position:fixed;bottom:0;left:0;right:0;height:var(--bottomnav-h);
  background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);display:flex;z-index:30}
.bottomnav a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;font-size:.62rem;color:var(--muted);font-weight:600}
.bottomnav a.on{color:var(--brand)}
.bottomnav .bn-icon{font-size:1.25rem;line-height:1}
.bottomnav .bn-write{background:var(--brand);color:#fff !important;border-radius:50%;
  width:44px;height:44px;margin-top:-18px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(59,91,253,.35)}
.bottomnav .bn-write .bn-icon{font-size:1.4rem}

/* ---------- desktop (>=768px) ---------- */
@media(min-width:768px){
  body{padding-bottom:24px}
  .wrap{padding:0 20px}
  .boards{justify-content:center}
  .bottomnav{display:none}
  .post{padding:16px 18px}
  .votebox{min-width:44px}
  .detail{padding:24px}
  .search input{width:180px}
  .acct{gap:12px}
}

/* ---------- i18n / auth / share ---------- */
.langbtn{margin-left:8px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);font-size:.75rem;font-weight:700;color:var(--brand);background:var(--card);white-space:nowrap}
.langbtn:hover{border-color:var(--brand)}
.google-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;width:100%;height:40px;padding:0 16px;border-radius:4px;background:#fff;color:#1f1f1f;border:1px solid #747775;font-family:Roboto,Helvetica,Arial,sans-serif;font-size:14px;font-weight:500;text-decoration:none;cursor:pointer;box-sizing:border-box}
.google-btn:hover{background:#f8f9fa;border-color:#131314}
.glogo{width:18px;height:18px;flex-shrink:0}
.share-btn svg{display:block}
.share-btn.copied{background:#e6f4ea;border-color:#34a853;color:#188038}
.or-divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:.8rem;margin:10px 0}
.or-divider::before,.or-divider::after{content:"";flex:1;height:1px;background:var(--line)}
.sharebox{display:flex;align-items:center;gap:8px;margin:10px 0;flex-wrap:wrap}
.share-btn{display:inline-flex;align-items:center;justify-content:center;min-width:32px;height:32px;padding:0 10px;border-radius:999px;background:var(--bg);border:1px solid var(--line);font-size:.85rem;font-weight:700;color:var(--brand);cursor:pointer}
.share-btn:hover{border-color:var(--brand);background:var(--card)}
.notice.ok{background:#eafaf1;color:#0a8f3c;border:1px solid #b7e6cd;padding:9px 12px;border-radius:10px;font-size:.86rem}