/* 제작하기·내 수업·교사 화면·학생 화면 */
.page-top { padding-top:calc(var(--header-height) + 40px); min-height:70svh; }
.page-simple { padding:160px 24px; text-align:center; }
.page-simple h1 { font-size:clamp(1.8rem,4vw,2.8rem); margin-bottom:16px; }
.hd-right { justify-self:end; display:flex; align-items:center; gap:10px; position:relative; }
.hd-user { min-height:40px; padding:6px 14px; border-radius:999px; background:transparent; color:#E4E0D7; box-shadow:inset 0 0 0 1px #ffffff40; }
.hd-local { font-size:14px; color:var(--night-mute); padding:4px 10px; border-radius:999px; border:1px dashed #ffffff40; }
@media (max-width:767px) { .hd-local,.hd-user { display:none; } }
.ri-name { font-family:var(--font) !important; font-weight:850 !important; letter-spacing:-.03em !important; font-size:clamp(2.6rem,9vw,6.4rem) !important; }
.mk-note { color:var(--mute); font-size:14px; font-weight:400; }
.ai-dot { width:26px; height:26px; border-radius:50%; flex:none; }
.ai-dot-chatgpt { background:#0D0D0D; } .ai-dot-gemini { background:linear-gradient(135deg,#4285F4,#9B72CB,#D96570); } .ai-dot-claude { background:#D97757; }

/* 로그인 */
.login { padding-block:40px 80px; }
.login-card { max-width:520px; margin:0 auto; padding:32px; border-radius:var(--panel-radius); background:var(--white); }
.login-card h2 { font-size:28px; margin-bottom:12px; }
.login-card form { display:grid; gap:10px; margin-top:18px; }
.login-card input,.mk-f input,.mk-f select,.mk-f textarea { width:100%; border:1px solid #B9B5AC; border-radius:10px; padding:12px 14px; background:#fff; color:var(--char); }
.login-sw { margin:16px 0 0; color:var(--mute); } .login-sw button { background:transparent; color:var(--clay-deep); font-weight:700; text-decoration:underline; min-height:36px; padding:0 4px; }
.login-ok { color:var(--tide); font-weight:700; } .login-err,.mk-err { color:#B3361B; font-weight:600; }

/* 제작하기 */
.mk-head { padding-bottom:28px; } .mk-head h1 { font-size:clamp(2.2rem,5vw,4rem); }
.mk-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:20px; padding-bottom:20px; align-items:start; }
.mk-card { padding:clamp(20px,3vw,34px); border-radius:var(--panel-radius); background:var(--white); display:grid; gap:14px; }
.mk-card h2 { font-size:24px; display:flex; align-items:center; gap:12px; }
.mk-card h2 span { display:grid; place-items:center; width:36px; height:36px; border-radius:50%; background:var(--char); color:#fff; font-size:17px; }
.mk-go { grid-column:1 / -1; }
.mk-drop { display:grid; gap:6px; place-items:center; text-align:center; min-height:170px; padding:24px; border:2px dashed #B9B5AC; border-radius:var(--radius); background:var(--paper); cursor:pointer; transition:background .2s,border-color .2s; }
.mk-drop span { color:var(--mute); font-size:15px; } .mk-drop.is-over,.mk-drop:hover { border-color:var(--clay); background:#F8E9E2; }
.mk-files { list-style:none; margin:0; padding:0; display:grid; gap:8px; }
.mk-files li { display:flex; justify-content:space-between; align-items:center; gap:12px; padding:10px 14px; border-radius:12px; background:var(--paper); }
.mk-files li.bad { background:#FBE9E5; } .mk-files b { display:block; word-break:break-all; } .mk-files small { color:var(--mute); }
.mk-files button { min-height:36px; padding:4px 12px; border-radius:999px; background:#fff; color:var(--char); }
.mk-fine { margin:0; color:var(--mute); font-size:15px; } .mk-warn { margin:0; color:#8A4B12; font-weight:600; }
.mk-ai { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; }
.mk-aic { display:grid; gap:4px; justify-items:start; text-align:left; padding:14px; border-radius:var(--radius); background:var(--paper); color:var(--char); box-shadow:inset 0 0 0 2px transparent; }
.mk-aic.is-on { box-shadow:inset 0 0 0 2px var(--char); background:#fff; } .mk-aic small { color:var(--mute); font-size:13px; line-height:1.35; }
.mk-f { display:grid; gap:6px; font-weight:650; } .mk-f small,.mk-chk small { font-weight:400; color:var(--mute); }
.mk-chk { font-size:15px; } .mk-row { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.mk-acts { border:0; padding:0; margin:0; display:flex; flex-wrap:wrap; gap:8px 18px; } .mk-acts legend { font-weight:650; margin-bottom:6px; padding:0; }
.mk-gen { width:100%; max-width:420px; }
.mk-draft { margin-top:8px; padding:20px; border-radius:var(--radius); background:var(--paper); }
.mk-table { width:100%; border-collapse:collapse; margin:12px 0; font-size:16px; } .mk-table th,.mk-table td { text-align:left; padding:8px 10px; border-bottom:1px solid var(--line); vertical-align:top; } .mk-table td:first-child,.mk-table th:first-child { width:44px; white-space:nowrap; color:var(--mute); } .mk-table tr.busy { opacity:.55; } .mk-cell { display:block; }
.mk-rowbtn { display:flex; flex-wrap:wrap; gap:6px; margin-top:6px; } .mk-rowbtn button { font:inherit; font-size:13px; padding:3px 10px; border-radius:999px; border:1px solid var(--line); background:transparent; color:var(--mute); cursor:pointer; } .mk-rowbtn button:hover:not(:disabled) { color:var(--clay-deep); border-color:var(--clay-deep); } .mk-rowbtn button:disabled { opacity:.5; cursor:default; }
.mk-pv { position:relative; width:100%; overflow:hidden; border:1px solid var(--line); border-radius:10px; background:#FBFAF6; } .mk-pvnote { margin:6px 0 0; font-size:13px; color:var(--mute); } .mk-link { font:inherit; font-size:14px; margin-left:8px; padding:0; border:0; background:none; color:var(--clay-deep); text-decoration:underline; cursor:pointer; }
.mk-edit td { background:rgba(0,0,0,.03); } .mk-edit textarea { display:block; width:100%; margin-top:6px; font:inherit; padding:8px; border:1px solid var(--line); border-radius:8px; box-sizing:border-box; } .mk-editrow { display:flex; flex-wrap:wrap; align-items:center; gap:10px; margin-top:8px; } .mk-editrow select { font:inherit; padding:6px; margin-left:4px; } .mk-table td:nth-child(2) { white-space:nowrap; color:var(--clay-deep); font-weight:700; }
.lib-tabs { display:flex; gap:6px; margin-bottom:18px; padding:4px; width:fit-content; border-radius:999px; background:#fff; }
.lib-tabs button { min-height:44px; padding:8px 24px; border-radius:999px; background:transparent; color:var(--char); font-weight:650; } .lib-tabs button[aria-selected="true"] { background:var(--char); color:#fff; }
.mk-note-box { margin:0; padding:12px 14px; border-radius:12px; background:var(--paper); font-size:15px; line-height:1.6; } .mk-note-box a { color:var(--clay-deep); font-weight:700; }
/* 인트로: 바다색 배경과 파도 */
body.intro-page { background:#031a2e; }
.intro-stage { background:linear-gradient(#031a2e,#05476b 55%,#0b7a98); }
.intro-stage::after { background:radial-gradient(ellipse at 70% 66%,#22b8cf30,transparent 46%),radial-gradient(ellipse at 28% 72%,#0e749030,transparent 50%); }
.intro-page .site-header { background:#031a2eeb; }
.intro-page .site-footer { border-color:#8fe3f033; background:#031a2e; } .intro-page .site-footer p { color:#9cc7d6; }
.ri { background:#031a2e; }
.ri-cap { text-shadow:0 2px 30px rgba(2,22,40,.7); }
.ri-cap .ri-dim,.ri-num { color:#8fe3f0; }
.ri-li { color:rgba(200,235,245,.4); } .ri-li.is-on { color:#fff; }
.ri-name { text-shadow:0 2px 30px rgba(2,22,40,.6),0 0 .5em rgba(120,225,245,.3); }
.ri-bar i { background:#5fd3e6; }
.ri-lock { top:34%; }
.ri .ri-ctrl { bottom:108px; }

/* 제작자 서명(첫 화면 푸터 오른쪽 아래): DESIGNED BY + P.S.J. */
.site-footer { position:relative; }
.ft-sig { position:absolute; right:clamp(16px,5vw,64px); bottom:20px; display:flex; align-items:stretch; gap:12px; color:#eaf9ff; pointer-events:none; }
/* 라벨은 서명 왼쪽에 세로로 세우고(아래에서 위로 읽힘), 가는 선이 그 사이를 가른다 */
.ft-sig-label { display:grid; justify-items:end; align-self:center; gap:3px; font:700 clamp(8px,.7vw,10px)/1 var(--font); letter-spacing:.3em; white-space:nowrap; color:rgba(200,240,248,.92); }
.ft-sig-line { display:flex; margin-right:-.3em; }
.ft-sig-line > span { opacity:0; }
.ft-sig-rule { width:1.5px; align-self:stretch; margin:4px 0; border-radius:2px; background:linear-gradient(#8fe3f000,#8fe3f0 30%,#ffb08a 70%,#ffb08a00); transform:scaleY(0); transform-origin:50% 100%; }
.ft-sig svg { display:block; width:clamp(128px,14vw,178px); height:auto; overflow:visible; filter:drop-shadow(0 0 10px rgba(120,225,245,.35)); }
.ft-sig path { fill:none; stroke-linecap:round; stroke-linejoin:round; stroke-dasharray:var(--len,0); stroke-dashoffset:var(--len,0); }
.ft-sig.is-go .ft-sig-rule { animation:sg-rule .7s cubic-bezier(.3,.7,.2,1) .05s forwards; }
.ft-sig.is-go .ft-sig-line > span { animation:sg-rise .5s cubic-bezier(.2,.8,.3,1) calc(.3s + var(--i) * .06s) forwards; }
@keyframes sg-draw { to { stroke-dashoffset:0; } }
@keyframes sg-rise { from { opacity:0; } to { opacity:1; } }
@keyframes sg-rule { to { transform:scaleY(1); } }
@media (max-width:700px) { .ft-sig { position:static; margin-left:auto; } }
/* 날려 쓴 P.S.J.: 빠르게 긋고(끝에서 감속) → 점은 튕기듯 → 꼬리가 휘날리고 → 불꽃 */
.sg-main { stroke:url(#ft-sg); stroke-width:3.8; } .sg-tail { stroke:url(#ft-sg); stroke-width:2.8; }
.sg-fleck { stroke:#ffb08a; stroke-width:5; } .sg-echo { stroke:rgba(143,227,240,.42); stroke-width:1.5; }
.ft-sig.is-go .sg-main,.ft-sig.is-go .sg-tail { animation:sg-draw var(--dur,.5s) cubic-bezier(.22,.7,.25,1) var(--delay,0s) forwards; }
.ft-sig.is-go .sg-echo { animation:sg-draw var(--dur,.5s) cubic-bezier(.22,.7,.25,1) var(--delay,0s) forwards; }
.ft-sig.is-go .sg-fleck { animation:sg-draw var(--dur,.14s) ease-out var(--delay,0s) forwards; }
/* 꼬리 끝의 점: 등대처럼 주기적으로 번쩍이며 빛이 퍼져 나간다 */
.sg-halo,.sg-ring,.sg-spark { transform-box:fill-box; transform-origin:center; opacity:0; }
.sg-halo { fill:url(#ft-halo); } .sg-spark { fill:#fff1e6; } .sg-ring { fill:none; stroke:#ffb08a; stroke-width:1.5; }
.ft-sig.is-go .sg-spark,.ft-sig.is-go .sg-halo { animation:sg-beacon 3.2s ease-in-out var(--end,2s) infinite; }
.ft-sig.is-go .sg-ring { animation:sg-ripple 3.2s ease-out var(--end,2s) infinite; }
.ft-sig.is-go .sg-ring2 { animation-delay:calc(var(--end,2s) + 1.6s); }
.ft-sig.is-still .ft-sig-line > span { opacity:1; } .ft-sig.is-still .sg-spark { opacity:1; } .ft-sig.is-still .sg-halo { opacity:.6; }
@keyframes sg-beacon { 0% { opacity:.3; transform:scale(.55); } 10% { opacity:1; transform:scale(1.7); } 34% { opacity:.55; transform:scale(1); } 100% { opacity:.3; transform:scale(.55); } }
@keyframes sg-ripple { 0% { opacity:.85; transform:scale(.5); } 100% { opacity:0; transform:scale(5.2); } }
.usage { display:grid; gap:8px; margin:0 0 20px; padding:16px 18px; max-width:560px; border-radius:var(--radius); background:#fff; }
.usage-row { display:grid; grid-template-columns:72px minmax(0,1fr) auto; gap:12px; align-items:center; font-size:15px; } .usage-row span { font-weight:650; }
.usage-row i { height:8px; border-radius:6px; background:var(--paper-2); overflow:hidden; } .usage-row u { display:block; height:100%; background:var(--tide); text-decoration:none; transition:width .4s; }
.usage-row em { font-style:normal; color:var(--mute); font-variant-numeric:tabular-nums; } .usage-row.is-full u { background:#C0392B; } .usage-row.is-full em { color:#B3361B; font-weight:700; }
.usage-note { margin:0 0 16px; color:var(--mute); font-size:15px; }
/* 학생 입장(학년·반·번호·이름) */
.st-ident form { display:grid; gap:14px; margin-top:6px; }
.st-row { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; }
.st-ident label { display:grid; gap:6px; font-weight:650; font-size:15px; }
.st-ident select,.st-ident input { width:100%; min-height:48px; padding:8px 12px; border:1px solid #B9B5AC; border-radius:12px; background:#fff; font-size:18px; color:var(--char); }
.st-ident .button { width:100%; }
.st-me { min-height:32px; padding:2px 10px; border-radius:999px; background:var(--paper-2); color:var(--char); font-size:13px; font-weight:650; max-width:44vw; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
/* 교사 화면: 이름 명단 */
.tp-roster { display:grid; gap:8px; }
.tp-rh { margin:6px 0 0; font-size:14px; font-weight:700; } .tp-rh.warn { color:#B3361B; } .tp-rh.ok { color:var(--tide); }
.tp-names { display:flex; flex-wrap:wrap; gap:6px; }
.tp-name { padding:4px 10px; border-radius:999px; background:#FBE9E5; color:#8A2A15; font-size:14px; font-weight:650; box-shadow:inset 0 0 0 1.5px #E7B4A8; }
.tp-name.done { background:var(--tide); color:#fff; box-shadow:none; } .tp-name.off { opacity:.5; }
.mk-gem-note { margin:0; padding:12px 14px; border-radius:12px; background:#FFF3D6; box-shadow:inset 0 0 0 1.5px #F0C25C; color:#5C3B00; font-size:15px; line-height:1.6; }
.mk-lib { padding:14px; border-radius:var(--radius); background:var(--paper); } .mk-lib h3 { font-size:1.05rem; margin-bottom:8px; } .mk-lib ul { list-style:none; margin:0 0 8px; padding:0; display:grid; gap:6px; }
.mk-lib li { display:flex; justify-content:space-between; align-items:center; gap:10px; padding:8px 12px; border-radius:12px; background:#fff; } .mk-lib b { display:block; word-break:break-all; } .mk-lib small { color:var(--mute); }
.mk-lib li button { min-height:36px; padding:4px 14px; border-radius:999px; background:var(--char); color:#fff; flex:none; } .mk-lib > a { font-size:15px; color:var(--tide); font-weight:600; }
.mk-sample { padding-block:20px 80px; color:var(--mute); }
@media (max-width:899px) { .mk-grid,.mk-ai,.mk-row { grid-template-columns:minmax(0,1fr); } }

/* 내 수업 */
.lib { padding-bottom:80px; } .lib-head { display:flex; justify-content:space-between; align-items:center; gap:16px; margin-bottom:24px; flex-wrap:wrap; } .lib-head h1 { font-size:clamp(2rem,4vw,3rem); }
.lib-up { display:flex; flex-wrap:wrap; align-items:center; gap:12px; margin:12px 0; } .lib-all { display:inline-flex; align-items:center; gap:8px; margin:4px 0 10px; font-weight:600; cursor:pointer; }
.lib-chk { display:flex; align-items:center; } .lib-chk input,.lib-all input { width:22px; height:22px; accent-color:var(--clay-deep); cursor:pointer; } .lib-main { flex:1; min-width:200px; } .lib-list li.is-picked { outline:2px solid var(--clay-deep); }
.lib-bar { position:sticky; bottom:12px; z-index:5; display:flex; flex-wrap:wrap; align-items:center; justify-content:flex-end; gap:10px; margin-top:16px; padding:12px 16px; border-radius:var(--radius); background:#141414; color:#fff; box-shadow:0 6px 24px rgba(0,0,0,.25); } .lib-bar span { margin-right:auto; font-weight:600; }
.lib-empty { padding:40px; border-radius:var(--panel-radius); background:#fff; text-align:center; } .lib-list { list-style:none; margin:0; padding:0; display:grid; gap:12px; }
.lib-list li { display:flex; justify-content:space-between; gap:16px; align-items:center; padding:20px 24px; border-radius:var(--radius); background:#fff; flex-wrap:wrap; } .lib-list h3 { font-size:1.35rem; } .lib-list p { margin:6px 0 0; color:var(--mute); } .lib-act { display:flex; gap:8px; }

/* 슬라이드 본문 */
.sb { width:100%; }
.sb h2 { font-size:inherit; } .sb h3 { font-size:inherit; }
.sb-stage { height:100%; font-size:26px; } .sb-stage .sb-explain { font-size:24px; margin-top:12px; }
.sb-stage h2 { font-size:72px; max-inline-size:14em; } .sb-stage h3 { font-size:46px; margin-bottom:18px; }
.sb-kick { margin:0 0 16px; font-size:28px; font-weight:700; color:var(--clay-deep); } .sb-center { display:grid; align-content:center; min-height:480px; }
.sb-q { margin:20px 0 22px !important; font-weight:600; } .sb-stage .sb-q { font-size:32px; margin:14px 0 18px !important; }
.sb-bullets { margin:0; padding-left:1.1em; font-weight:650; line-height:1.55; } .sb-stage .sb-bullets { font-size:34px; } .sb-bullets li { margin-bottom:.3em; }
.sb-explore { display:grid; grid-template-columns:auto minmax(0,1fr); gap:28px; align-items:start; } .sb-explore canvas { background:#fff; border-radius:16px; box-shadow:0 0 0 2px var(--line); width:560px; max-width:100%; height:auto; }
.sb-student .sb-explore { grid-template-columns:minmax(0,1fr); }
.sb-cap { margin:0 0 14px; color:var(--mute); } .sb-ctl label { display:block; font-weight:700; } .sb-ctl output { color:var(--clay-deep); margin-left:8px; } .sb-ctl input[type=range] { display:block; width:100%; margin:12px 0; height:30px; }
.sb-ask { margin:14px 0; font-weight:700; } .sb-sent { margin:12px 0 0; color:var(--tide); font-weight:700; } .sb-hint { color:var(--mute); } .sb-err { color:#B3361B; font-weight:700; }
.sb-choices { list-style:none; margin:0; padding:0; display:grid; gap:12px; }
.sb-choice { position:relative; overflow:hidden; display:flex; align-items:center; gap:14px; width:100%; text-align:left; padding:14px 18px; border-radius:16px; background:var(--paper); color:inherit; font-size:inherit; font-weight:650; box-shadow:inset 0 0 0 2px transparent; }
.sb-stage .sb-choice { font-size:28px; padding:10px 22px; } .sb-choice b { display:grid; place-items:center; width:1.6em; height:1.6em; border-radius:50%; background:var(--char); color:#fff; font-size:.7em; flex:none; position:relative; } .sb-choice span { position:relative; flex:1; } .sb-choice em { position:relative; font-style:normal; color:var(--mute); font-size:.7em; }
.sb-choice:not(:disabled):hover { box-shadow:inset 0 0 0 2px var(--char); } .sb-choice.is-mine { box-shadow:inset 0 0 0 3px var(--tide); background:#E7F1EF; } .sb-choice.is-correct { box-shadow:inset 0 0 0 3px #2E8B57; background:#E2F3E8; } .sb-choice.is-wrong { box-shadow:inset 0 0 0 3px #C0392B; background:#FBE9E5; }
.sb-choice:disabled { opacity:1; cursor:default; } .sb-bar { position:absolute; left:0; top:0; bottom:0; background:#D9775740; transition:width .4s; }
.sb-explain { margin:16px 0 0; padding:14px 18px; border-radius:14px; background:#F1EEE6; } .sb-short { display:grid; gap:10px; } .sb-short textarea { width:100%; border:1px solid #B9B5AC; border-radius:12px; padding:12px; font-size:18px; resize:vertical; }
.is-editable { outline:3px dashed var(--clay); outline-offset:6px; cursor:text; min-width:1em; display:inline-block; }
.is-editable:is(h2,h3,p) { display:block; }

/* 교실 화면(1280×720 비율) */
.deck { position:relative; width:100%; aspect-ratio:16/9; overflow:hidden; border-radius:16px; background:#fff; box-shadow:var(--shadow); }
.dk-stage { position:absolute; left:0; top:0; width:1280px; height:720px; transform-origin:0 0; background:#FBFAF6; color:var(--char); }
.dk-stage.is-board { background:#1f3a31; color:#F4F1EA; } .is-board .sb-choice { color:var(--char); } .is-board .sb-explain,.is-board .sb-kick { color:inherit; } .is-board .sb-cap,.is-board .sb-hint { color:#cfd8d3; }
.dk-slide { position:absolute; inset:0; padding:56px 80px 110px; overflow:hidden; animation:ri-in .3s ease-out; }
.dk-ink { position:absolute; inset:0; width:1280px; height:720px; pointer-events:none; } .dk-ink.is-on { pointer-events:auto; touch-action:none; cursor:crosshair; }
.dk-toolbar { position:absolute; left:50%; bottom:16px; transform:translateX(-50%); display:flex; align-items:center; gap:6px; padding:8px 12px; border-radius:999px; background:var(--char); color:var(--paper); box-shadow:var(--shadow); z-index:3; white-space:nowrap; }
.dk-toolbar button { min-height:48px; padding:6px 11px; border-radius:999px; background:transparent; color:inherit; font-size:19px; white-space:nowrap; font-weight:650; } .dk-toolbar button:hover:not(:disabled) { background:#ffffff1a; } .dk-toolbar button[aria-pressed="true"] { background:var(--clay); color:var(--char); }
.dk-pal { position:absolute; left:50%; bottom:100px; transform:translateX(-50%); display:grid; gap:10px; padding:14px 18px; border-radius:24px; background:var(--char); box-shadow:var(--shadow); z-index:4; }
.dk-pal-row { display:flex; gap:12px; justify-content:center; align-items:center; }
.dk-sw { width:48px; height:48px; min-height:48px; padding:0; border-radius:50%; box-shadow:inset 0 0 0 2px #ffffff55; } .dk-sw.is-on { box-shadow:0 0 0 4px var(--char),0 0 0 7px #fff; }
.dk-wd { width:72px; height:48px; min-height:48px; padding:0 10px; display:grid; align-items:center; border-radius:14px; background:#ffffff14; } .dk-wd i { display:block; width:100%; } .dk-wd.is-on { background:#ffffff33; box-shadow:inset 0 0 0 2px var(--clay); }
.dk-menu { position:absolute; left:50%; bottom:100px; transform:translateX(-10%); display:grid; gap:2px; padding:8px; min-width:210px; border-radius:20px; background:var(--char); color:var(--paper); box-shadow:var(--shadow); z-index:5; }
.dk-menu button { display:flex; align-items:center; gap:14px; min-height:48px; padding:6px 16px; border-radius:12px; background:transparent; color:inherit; font-size:22px; text-align:left; touch-action:manipulation; } .dk-menu button span { width:28px; text-align:center; font-size:26px; }
.dk-menu button:hover,.dk-menu button.is-on { background:#ffffff1f; } .dk-menu button.is-on { box-shadow:inset 0 0 0 2px var(--clay); }
.dk-text { position:absolute; z-index:6; box-sizing:border-box; min-width:120px; min-height:44px; padding:6px 8px; font-family:"Pretendard Variable",Pretendard,sans-serif; font-weight:700; line-height:1.3; white-space:pre; background:#ffffffd9; border:2px dashed var(--clay); border-radius:8px; resize:both; overflow:hidden; outline:none; }
.dk-textdrag { position:absolute; z-index:6; box-sizing:border-box; border:2px dashed var(--clay); border-radius:8px; background:#d9775722; pointer-events:none; }
/* 글 상자·이미지 개체(선택해서 옮기고 키울 수 있다) */
.dk-objs { position:absolute; inset:0; pointer-events:none; z-index:1; }
.dk-selpad { position:absolute; inset:0; pointer-events:auto; touch-action:none; cursor:crosshair; }
.dk-obj { position:absolute; box-sizing:border-box; pointer-events:none; user-select:none; -webkit-user-select:none; }
.dk-objs.is-sel .dk-obj { pointer-events:auto; touch-action:none; cursor:move; }
.dk-otext { padding:6px 8px; border:2px solid transparent; font-family:"Pretendard Variable",Pretendard,sans-serif; font-weight:700; line-height:1.3; white-space:pre; overflow:hidden; }
.dk-oimage img { width:100%; height:100%; display:block; object-fit:fill; pointer-events:none; border-radius:4px; }
.dk-obj.is-picked { outline:3px dashed var(--clay); outline-offset:4px; }
.dk-handle { position:absolute; z-index:3; width:36px; height:36px; border-radius:50%; background:var(--clay); border:4px solid #fff; box-shadow:0 2px 8px #0005; pointer-events:auto; touch-action:none; cursor:nwse-resize; }
.dk-selbar { position:absolute; z-index:3; display:flex; gap:6px; padding:6px; border-radius:999px; background:var(--char); box-shadow:var(--shadow); pointer-events:auto; }
.dk-selbar button { min-height:44px; padding:6px 18px; border-radius:999px; background:#ffffff1f; color:#fff; font-size:19px; font-weight:650; touch-action:manipulation; } .dk-selbar button.danger { background:#B3361B; }
.dk-lasso { position:absolute; inset:0; width:1280px; height:720px; pointer-events:none; z-index:3; max-width:none; } .dk-lasso polygon { fill:#d977571f; stroke:var(--clay); stroke-width:3; stroke-dasharray:10 8; }
.dk-grip { position:absolute; z-index:7; min-height:34px; padding:4px 14px; border-radius:999px; background:var(--clay); color:var(--char); font-size:17px; font-weight:700; cursor:move; touch-action:none; user-select:none; -webkit-user-select:none; box-shadow:0 2px 8px #0004; }
.dk-pal-hint { margin:0; padding:2px 6px; color:var(--paper); font-size:18px; line-height:1.5; text-align:center; }
.dk-stage.is-board .dk-text { background:#142a22d9; }
.dk-ink.is-on.tool-text { cursor:text; }
.dk-toolbar button { touch-action:manipulation; -webkit-tap-highlight-color:transparent; }
.dk-stage { -webkit-touch-callout:none; -webkit-user-select:none; user-select:none; } .dk-stage .is-editable { -webkit-user-select:text; user-select:text; }
.dk-page { font-size:20px; padding:0 8px; font-variant-numeric:tabular-nums; } .dk-sep { width:1px; height:28px; background:#ffffff33; }

/* 교사 화면 */
.tv { min-height:100svh; background:var(--paper); padding:0 clamp(10px,2vw,28px) 40px; }
.tv-bar { display:flex; align-items:center; gap:16px; padding:14px 0; flex-wrap:wrap; } .tv-bar a { text-decoration:none; color:var(--tide); font-weight:700; } .tv-bar strong { flex:1; font-size:1.2rem; min-width:10em; }
.tv-live { color:#B3361B; font-weight:800; } .tv-start { min-height:44px; padding:8px 20px; }
.tv-grid { display:grid; grid-template-columns:minmax(0,1fr); gap:18px; align-items:start; } .tv.is-live .tv-grid,.tv-grid:has(.tp-idle) { grid-template-columns:minmax(0,1fr) 380px; }
.tv-strip { list-style:none; margin:14px 0 0; padding:0; display:flex; gap:8px; overflow-x:auto; padding-bottom:8px; } .tv-strip button { display:grid; gap:2px; text-align:left; width:150px; min-height:64px; padding:8px 12px; border-radius:12px; background:#fff; color:var(--char); font-size:14px; box-shadow:inset 0 0 0 2px transparent; } .tv-strip button.is-cur { box-shadow:inset 0 0 0 2px var(--clay); } .tv-strip b { color:var(--clay-deep); } .tv-strip span { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; } .tv-strip em { font-style:normal; color:var(--mute); font-size:12px; }
.tp { background:#fff; border-radius:var(--radius); padding:18px; display:grid; gap:16px; font-size:15px; line-height:1.5; position:sticky; top:12px; max-height:calc(100svh - 24px); overflow-y:auto; }
.tp h3 { font-size:17px; margin-bottom:8px; } .tp h4 { font-size:14px; margin:14px 0 6px; color:var(--mute); } .tp-idle { gap:10px; } .tp-idle ul { margin:0; padding-left:1.2em; }
.tp-head { display:flex; justify-content:space-between; align-items:center; gap:12px; padding:14px; border-radius:var(--radius); background:var(--char); color:var(--paper); } .tp-label { margin:0; color:var(--night-mute); font-size:13px; } .tp-code { margin:0; font-size:44px; font-weight:850; letter-spacing:.08em; color:var(--clay); font-variant-numeric:tabular-nums; line-height:1.1; } .tp-who { margin:6px 0 0; } .tp-who strong { font-size:22px; color:#fff; }
.qr { width:132px; height:132px; background:#fff; padding:6px; border-radius:10px; flex:none; } .qr img,.qr canvas { width:100% !important; height:auto !important; }
.tp-actions { display:flex; gap:8px; flex-wrap:wrap; } .tp-btn { min-height:40px; padding:6px 14px; border-radius:999px; background:var(--paper); color:var(--char); text-decoration:none; font-weight:650; display:inline-flex; align-items:center; } .tp-btn.danger { background:#FBE9E5; color:#B3361B; }
.tp-sec { padding-top:4px; border-top:1px solid var(--line); } .tp-sw { display:flex; gap:12px; align-items:flex-start; padding:8px 0; cursor:pointer; } .tp-sw input { width:22px; height:22px; margin-top:2px; accent-color:var(--tide); } .tp-sw b { display:block; } .tp-sw small { color:var(--mute); }
.tp-rate-bar { height:10px; border-radius:6px; background:var(--paper-2); overflow:hidden; } .tp-rate-bar i { display:block; height:100%; background:var(--tide); transition:width .4s; } .tp-rate p { margin:6px 0 0; } .tp-rate span { color:var(--mute); margin-left:6px; } .tp-note { margin:6px 0 0; color:#8A4B12; font-weight:600; } .tp-empty { color:var(--mute); margin:0; }
.tp-bars { list-style:none; margin:10px 0 0; padding:0; display:grid; gap:8px; } .tp-bars li { display:grid; gap:2px; } .tp-bl b { display:inline-grid; place-items:center; width:1.5em; height:1.5em; border-radius:50%; background:var(--char); color:#fff; font-size:12px; margin-right:4px; } .tp-bt { display:block; height:10px; border-radius:6px; background:var(--paper-2); overflow:hidden; } .tp-bt i { display:block; height:100%; background:var(--clay); transition:width .4s; } .tp-bars .is-ans .tp-bt i { background:#2E8B57; } .tp-bn { color:var(--mute); font-size:13px; }
.tp-score { margin:10px 0 0; } .tp-score.warn { color:#B3361B; font-weight:700; }
.tp-hist { display:flex; align-items:flex-end; gap:4px; height:110px; margin-top:10px; } .tp-hist span { flex:1; background:var(--clay); border-radius:4px 4px 0 0; min-height:3px; transition:height .4s; } .tp-axis { display:flex; justify-content:space-between; color:var(--mute); font-size:13px; }
.tp-wall { list-style:none; margin:10px 0 0; padding:0; display:grid; gap:8px; max-height:300px; overflow-y:auto; } .tp-wall li { padding:10px 12px; border-radius:12px; background:var(--paper); position:relative; } .tp-wall b { font-size:12px; color:var(--clay-deep); } .tp-wall p { margin:2px 0 0; padding-right:44px; word-break:break-word; } .tp-wall button { position:absolute; right:8px; top:8px; min-height:26px; padding:0 8px; border-radius:999px; background:#fff; font-size:12px; color:var(--mute); }
.tp-chips { display:flex; flex-wrap:wrap; gap:6px; } .tp-chip { display:grid; place-items:center; min-width:30px; height:30px; padding:0 6px; border-radius:50%; background:var(--paper-2); color:var(--mute); font-weight:700; font-size:13px; } .tp-chip.done { background:var(--tide); color:#fff; } .tp-chip.off { opacity:.4; }
.tp-over { list-style:none; margin:0; padding:0; display:grid; gap:4px; } .tp-over button { display:grid; grid-template-columns:24px minmax(0,1fr) 60px 52px; gap:8px; align-items:center; width:100%; min-height:36px; padding:4px 8px; border-radius:10px; background:transparent; color:var(--char); text-align:left; font-size:14px; } .tp-over button.is-cur { background:var(--paper); } .tp-over span { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; } .tp-over i { height:6px; border-radius:4px; background:var(--paper-2); overflow:hidden; } .tp-over u { display:block; height:100%; background:var(--tide); text-decoration:none; } .tp-over em { font-style:normal; color:var(--mute); text-align:right; }
.toast { position:fixed; left:50%; bottom:28px; transform:translateX(-50%); padding:10px 20px; border-radius:999px; background:var(--char); color:#fff; z-index:60; }
@media (max-width:1100px) { .tv.is-live .tv-grid,.tv-grid:has(.tp-idle) { grid-template-columns:minmax(0,1fr); } .tp { position:static; max-height:none; } }

/* 학생 화면(휴대폰) */
.st { min-height:100svh; background:var(--paper); display:grid; align-content:start; gap:12px; padding:0 14px 40px; max-width:640px; margin:0 auto; font-size:18px; }
.st-top { display:flex; align-items:center; gap:10px; padding:14px 2px; font-size:15px; } .st-top strong { font-size:20px; } .st-top span:nth-child(2) { flex:1; color:var(--mute); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.st-dot { width:12px; height:12px; border-radius:50%; background:#C9C5BD; } .st-dot.on { background:#2E8B57; box-shadow:0 0 0 4px #2E8B5733; }
.st-card { padding:22px; border-radius:var(--panel-radius); background:#fff; display:grid; gap:12px; } .st-card h1 { font-size:1.6rem; } .st-sub { margin:0; color:var(--mute); font-size:14px; }
.sb-student h2 { font-size:30px; } .sb-student h3 { font-size:24px; margin-bottom:10px; } .sb-student .sb-q { font-size:20px; } .sb-student .sb-bullets { font-size:20px; } .sb-student .sb-choice { font-size:18px; min-height:56px; }
.st-ink { margin:0; } .st-ink img { width:100%; border-radius:12px; background:#fff; box-shadow:0 0 0 2px var(--line); }
body.is-student { background:var(--paper); color:var(--char); }