/* 강의실·Q&A·후기·관리자 화면 공통 (색은 소개 페이지와 같다) */
:root{
  --paper:#140a0c; --card:#1f1114; --ink:#f5ecec; --muted:#b9a3a5; --line:#3a2226;
  --amber:#b0122a; --amber-soft:#3a1219; --night:#0e0607; --glow:#ff6f7d; --rose:#ff6f7d; --ok:#7fd49b;
  --r:14px; --w:1080px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Pretendard,"Malgun Gothic",system-ui,sans-serif;line-height:1.7;word-break:keep-all;-webkit-font-smoothing:antialiased}
a{color:inherit}
.wrap{max-width:var(--w);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.3;margin:0;letter-spacing:-.02em}
p{margin:0}
main{padding:40px 0 80px}
.page-head{margin-bottom:26px}
.page-head h1{font-size:clamp(24px,3.4vw,32px)}
.page-head p{color:var(--muted);margin-top:8px}
.muted{color:var(--muted)}
.small{font-size:13px}

nav{position:sticky;top:0;z-index:10;background:rgba(14,6,7,.94);backdrop-filter:blur(8px);color:#fff;border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:58px;gap:12px}
.logo{font-weight:800;font-size:17px;text-decoration:none;display:flex;align-items:center;gap:8px;white-space:nowrap}
.logo i{width:10px;height:10px;border-radius:50%;background:var(--glow);box-shadow:0 0 12px var(--glow)}
.menu{display:flex;gap:18px;align-items:center;font-size:14px}
.menu a{text-decoration:none;opacity:.78}
.menu a:hover,.menu a.on{opacity:1}
.menu a.on{color:var(--glow);font-weight:700}
.who{display:flex;align-items:center;gap:8px;font-size:13px}
.who img{width:26px;height:26px;border-radius:50%}
@media(max-width:640px){.menu{gap:12px;font-size:13px}.who span{display:none}.logo span{display:none}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:999px;font-weight:700;font-size:14px;text-decoration:none;border:1.5px solid transparent;cursor:pointer;background:none;color:inherit;font-family:inherit}
.btn-main{background:var(--amber);color:#fff}
.btn-main:hover{background:#cc1a36}
.btn-line{border-color:var(--line)}
.btn-line:hover{border-color:var(--muted)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn:disabled{opacity:.5;cursor:default}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.notice{background:var(--amber-soft);border:1px solid #6b1f2b;border-radius:var(--r);padding:18px 20px}
.notice h3{font-size:17px;margin-bottom:6px}
.notice p{color:var(--muted);font-size:15px}
.notice .btn{margin-top:14px}
.tag{display:inline-block;font-size:12px;font-weight:700;padding:2px 9px;border-radius:999px;background:#2a171b;border:1px solid var(--line);color:var(--muted)}
.tag.red{color:#fff;background:var(--amber);border-color:var(--amber)}
.tag.ok{color:var(--ok);border-color:#2f5b3d}

label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin:14px 0 6px}
input[type=text],input[type=email],input[type=url],select,textarea{width:100%;background:#160b0d;color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:inherit;font-size:15px}
textarea{min-height:120px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid var(--amber);border-color:transparent}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row.end{justify-content:flex-end}
.check{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);font-weight:500;margin:0}

/* 강의실 */
.classroom{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;align-items:start}
@media(max-width:900px){.classroom{grid-template-columns:1fr}}
.player{aspect-ratio:16/9;background:#000;border-radius:var(--r);overflow:hidden;display:grid;place-items:center;color:var(--muted);text-align:center;padding:0}
.player iframe{width:100%;height:100%;border:0}
/* 유출 추적용 워터마크: 보는 사람 이메일이 영상 위를 돌아다닌다 (클릭은 영상으로 통과) */
.player{position:relative}
.player .wm{position:absolute;left:8%;top:12%;pointer-events:none;user-select:none;z-index:2;white-space:nowrap;font-size:clamp(11px,1.6vw,16px);font-weight:700;color:rgba(255,255,255,.38);text-shadow:0 0 3px rgba(0,0,0,.7);transition:left 2s ease,top 2s ease}
/* 1강 절반에서 영상 위에 덮는 동의 상자 */
.player .gate-ov{position:absolute;inset:0;z-index:3;overflow:auto;background:var(--card);color:var(--ink);padding:18px 20px;text-align:left}
.player:fullscreen{border-radius:0;aspect-ratio:auto;width:100vw;height:100vh}
.player .empty{padding:20px}
.now{margin-top:16px}
.now h2{font-size:21px}
.now .res{color:var(--rose);font-size:14px;margin-top:4px}
.toc{max-height:calc(100vh - 110px);overflow:auto;position:sticky;top:76px;padding:8px 0}
@media(max-width:900px){.toc{position:static;max-height:none}}
.toc h3{font-size:14px;color:var(--rose);padding:14px 16px 6px}
.toc .sec{font-size:14px;font-weight:700;padding:10px 16px 4px;color:var(--ink)}
.toc button{display:grid;grid-template-columns:20px 1fr auto;gap:8px;width:100%;text-align:left;background:none;border:0;color:var(--muted);font:inherit;font-size:14px;padding:7px 16px;cursor:pointer;line-height:1.5}
.toc button:hover{background:#2a171b;color:var(--ink)}
.toc button.on{background:var(--amber-soft);color:#fff}
.toc button .mk{color:var(--ok);font-weight:800}
.toc button .lk{opacity:.6}
.toc button .mn{font-size:12px;opacity:.7}
.toc button:disabled{cursor:default}
.toc button:disabled:hover{background:none;color:var(--muted)}

/* 게시판 */
.list{display:flex;flex-direction:column;gap:10px;margin-top:18px}
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.post-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;cursor:pointer}
.post-head h3{font-size:16px}
.post-meta{font-size:12px;color:var(--muted);margin-top:4px;display:flex;flex-wrap:wrap;gap:4px 10px;align-items:center}
.post-body{white-space:pre-wrap;margin-top:12px;font-size:15px;color:#e8dcdc}
.answer{margin-top:12px;padding:12px 14px;border-left:3px solid var(--glow);background:#2a141a;border-radius:0 10px 10px 0;white-space:pre-wrap;font-size:15px}
.answer b{display:block;color:var(--glow);font-size:13px;margin-bottom:4px;white-space:normal}
.post-tools{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs button{background:none;border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:6px 14px;font:inherit;font-size:13px;cursor:pointer}
.tabs button.on{background:var(--amber);border-color:var(--amber);color:#fff;font-weight:700}
.stars{color:#ffc35a;letter-spacing:1px;white-space:nowrap}
.star-pick{display:flex;gap:2px}
.star-pick button{background:none;border:0;font-size:28px;line-height:1;color:#55393d;cursor:pointer;padding:2px}
.star-pick button.on{color:#ffc35a}
.summary{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.summary b{font-size:34px;font-weight:800}
.empty-box{text-align:center;color:var(--muted);padding:36px 10px;border:1px dashed var(--line);border-radius:var(--r)}
.hidden-post{opacity:.55}
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#2a171b;border:1px solid var(--line);color:#fff;padding:10px 18px;border-radius:999px;font-size:14px;z-index:50;box-shadow:0 8px 24px rgba(0,0,0,.4)}

/* 환불 동의 (강의실 재생 전 확인) */
.refund-list{margin:0 0 14px 18px;color:var(--muted);font-size:14px;line-height:1.7}
.check-line{display:flex;gap:10px;align-items:flex-start;font-size:14px;margin-top:10px;cursor:pointer;line-height:1.5}
.check-line input{margin-top:3px;width:17px;height:17px;flex:none;accent-color:var(--amber)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.player.asking{aspect-ratio:auto;display:block;text-align:left;background:var(--card);border:1px solid var(--line);padding:22px;color:var(--ink)}
.player.asking h3{font-size:18px;margin-bottom:10px}
.player.asking .btn{margin-top:16px}

/* 관리자 */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--muted);font-size:12px;font-weight:700}
td input{padding:7px 10px;font-size:13px}
.admin-sec{margin-top:30px}
.admin-sec h2{font-size:20px;margin-bottom:12px}
.scroll{overflow-x:auto}
footer{border-top:1px solid var(--line);color:rgba(255,255,255,.5);font-size:12px;padding:26px 0 40px}