:root {
  --accent:#3772FF; --danger:#DF2935;
  --male-point:#3772FF;    --male-bg:#EBF1FF;
  --female-point:#F472B6;  --female-bg:#FDF2F8;
  --neutral-point:#6B7280; --neutral-bg:#F3F4F6;
  --desk-bg:#F5F3FF; --desk-border:#8B5CF6; --desk-text:#6D28D9;
  --radius-lg:20px; --radius-md:12px; --radius-sm:10px;
  --es:cubic-bezier(0.2,0,0,1);
  --eo:cubic-bezier(0.4,0,0.2,1);
  --tr:background-color .3s cubic-bezier(0.4,0,0.2,1), color .3s cubic-bezier(0.4,0,0.2,1), border-color .3s cubic-bezier(0.4,0,0.2,1), box-shadow .3s cubic-bezier(0.4,0,0.2,1), opacity .3s cubic-bezier(0.4,0,0.2,1), transform .3s cubic-bezier(0.4,0,0.2,1), filter .3s cubic-bezier(0.4,0,0.2,1);
  --swatch--clay:#D97757;
  --font-adjust:0px;
  --app-font:'Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,system-ui,'Segoe UI',sans-serif;
}
[lang="ja"]{--app-font:'Pretendard JP Variable','Pretendard JP','Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,system-ui,'Hiragino Sans','Noto Sans JP',sans-serif;}
[data-font-size="small"]{--font-adjust:-1px;}
[data-font-size="large"]{--font-adjust:2px;}
[data-theme="light"]{
  color-scheme:light;
  --bg:#fff; --surface:#F9FAFB; --surface2:#F3F4F6; --border:#E5E7EB;
  --text:#111827; --text-sub:#6B7280;
  --island-bg:rgba(255,255,255,0.95); --island-border:#E5E7EB;
  --shadow:0 4px 15px rgba(0,0,0,0.06); --overlay:rgba(0,0,0,0.45);
}
[data-theme="dark"]{
  color-scheme:dark;
  --bg:#000; --surface:#121212; --surface2:#1E1E1E; --border:#2D2D2D;
  --text:#F9FAFB; --text-sub:#9CA3AF;
  --swatch--clay:#ffffff;
  --island-bg:rgba(20,20,20,0.95); --island-border:#2D2D2D;
  --shadow:0 10px 30px rgba(0,0,0,0.8); --overlay:rgba(0,0,0,0.75);
  --male-bg:rgba(55,114,255,0.15); --female-bg:rgba(244,114,182,0.15);
  --neutral-bg:rgba(107,114,128,0.2); --desk-bg:rgba(139,92,246,0.15); --desk-text:#A78BFA;
}
@media(prefers-color-scheme:light){[data-theme="system"]{
  color-scheme:light;
  --bg:#fff;--surface:#F9FAFB;--surface2:#F3F4F6;--border:#E5E7EB;
  --text:#111827;--text-sub:#6B7280;
  --island-bg:rgba(255,255,255,0.95);--island-border:#E5E7EB;
  --shadow:0 4px 15px rgba(0,0,0,0.06);--overlay:rgba(0,0,0,0.45);
}}
@media(prefers-color-scheme:dark){[data-theme="system"]{
  color-scheme:dark;
  --bg:#000;--surface:#121212;--surface2:#1E1E1E;--border:#2D2D2D;
  --text:#F9FAFB;--text-sub:#9CA3AF;
  --island-bg:rgba(20,20,20,0.95);--island-border:#2D2D2D;
  --shadow:0 10px 30px rgba(0,0,0,0.8);--overlay:rgba(0,0,0,0.75);
  --male-bg:rgba(55,114,255,0.15);--female-bg:rgba(244,114,182,0.15);
  --neutral-bg:rgba(107,114,128,0.2);--desk-bg:rgba(139,92,246,0.15);--desk-text:#A78BFA;
  --swatch--clay:#ffffff;
}}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html,*{scrollbar-width:none;-ms-overflow-style:none;}
html::-webkit-scrollbar,body::-webkit-scrollbar,*::-webkit-scrollbar{width:0;height:0;display:none;background:transparent;}
html{width:100%;height:100%;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;}
body{width:100%;height:100%;min-height:100vh;background:var(--bg);color:var(--text);display:flex;justify-content:center;align-items:center;font-family:var(--app-font);font-synthesis:none;overflow:hidden;transition:background .4s,color .4s;}
h1,h2,h3,.tool-title,.section-label,.group-card-title{text-wrap:balance;}
p,li,.modal-body,.history-preview,.legal-desc,.pick-history-label,.notification-card p{text-wrap:pretty;}
:where(button,a,input,textarea,select,[role="button"]):focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 30%,transparent);outline-offset:2px;}
:where(.button,.modal-btn,.section-label,.tool-title,.custom-toggle,.seg2-btn,.mode-seg,.con-add-btn,.compact-action) i{position:relative;top:-.04em;line-height:1;}

@keyframes fadeUp{from{opacity:0;transform:translateY(22px) scale(0.97)}to{opacity:1;transform:none}}
#wrapper{display:flex;flex-direction:column;align-items:center;gap:20px;width:100%;animation:fadeUp .5s var(--es) both;}
#dynamic-island{animation:fadeUp .45s var(--es) .06s both;}

#dynamic-island{
  background:var(--island-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--island-border);border-radius:28px;padding:6px 10px;
  display:flex;align-items:center;gap:4px;box-shadow:var(--shadow);z-index:1000;
  transition:box-shadow .3s;
}
#dynamic-island:hover{box-shadow:0 8px 30px rgba(55,114,255,0.18);}
.btn-divider{width:1px;height:18px;background:var(--border);margin:0 4px;flex-shrink:0;}
.button{
  width:40px;height:40px;background:var(--surface2);border:none;
  border-radius:var(--radius-sm);color:var(--text);
  display:flex;justify-content:center;align-items:center;
  cursor:pointer;font-size:14px;transition:var(--tr);flex-shrink:0;
  position:relative;overflow:hidden;isolation:isolate;
}
.button:hover{background:var(--accent);color:#fff;transform:translateY(-2px) scale(1.05);}
.button:active{transform:scale(.96);}
.button:disabled{cursor:not-allowed;opacity:.58;transform:none;filter:saturate(.75);}
.button:disabled:hover{transform:none;opacity:.58;}

/* ── 버튼별 호버 배경/효과 ── */
#lock-button:active{transform:scale(.96) !important;}
#start-button{background:var(--accent);color:#fff;}
#start-button:hover{opacity:.88;transform:translateY(-2px) scale(1.05);}
#reset-button{color:var(--danger);}
#reset-button:hover{background:var(--danger);color:#fff;animation:resetFlash .9s ease infinite;}
#bug-main-button{color:var(--danger);}
#bug-main-button:hover{animation:bugGlitchBg .12s steps(1) infinite;color:#fff;}
#dev-button:hover{background:#000;color:#39FF14 !important;transform:translateY(-2px) scale(1.05);}
#dev-button:active{transform:scale(.96) !important;}
#save-main-button:hover{background:var(--accent);animation:exportGlow .6s var(--eo) infinite;}
#upload-button:hover{background:var(--accent);animation:importGlow .5s var(--eo) infinite;}
#sync-button.sync-on{background:var(--accent);color:#fff;}
#sync-button.syncing i{animation:syncSpin .8s linear infinite;}
#history-button:hover{background:var(--accent);}
#settings-button:hover{background:linear-gradient(135deg,var(--accent),#7C9CFF);animation:gearSpinBg 1.1s linear infinite;}
#patch-button:hover{background:var(--accent);animation:unrollGlow .5s var(--es) infinite;}
#info-button::after{display:none;}
#info-button:hover{background:var(--accent);position:relative;animation:infoGlow 1.6s var(--eo) infinite;}
@keyframes infoGlow{
  0%,58%,100%{box-shadow:none;}
  15%{box-shadow:0 0 18px rgba(55,114,255,.8);}
  40%{box-shadow:0 0 6px rgba(55,114,255,.2);}
}
@keyframes syncSpin{to{transform:rotate(360deg)}}
#info-button:hover::before{display:none;}

@keyframes lockFlash{
  0%,52%,100%{box-shadow:0 0 0 rgba(223,41,53,0);outline:2px solid rgba(223,41,53,0);}
  15%{box-shadow:0 0 18px rgba(223,41,53,1),inset 0 0 8px rgba(223,41,53,.4);outline:2px solid rgba(223,41,53,.9);}
  40%{box-shadow:0 0 8px rgba(223,41,53,.4);outline:2px solid rgba(223,41,53,.3);}
}
#lock-button:hover{background:var(--text-sub);color:#fff !important;transform:translateY(-2px) scale(1.05);animation:lockFlash 1.8s linear infinite;}

/* ── Wide Wash ::after ── */
.button::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22) 50%,transparent);
  transform:translateX(-110%);pointer-events:none;z-index:1;
}
.button.entering::after{animation:wideWashIn .48s ease forwards;}
.button.leaving::after{animation:wideWashOut .45s ease forwards;}
@keyframes wideWashIn{from{transform:translateX(-110%)}to{transform:translateX(110%)}}
@keyframes wideWashOut{from{transform:translateX(110%)}to{transform:translateX(-130%)}}

/* ── 아이콘 공통 ── */
.button i{position:relative;z-index:2;transition:transform .22s var(--es),filter .22s var(--eo);}
.button:hover i{transform:translateY(-1px) scale(1.06);}

/* ── 버튼별 아이콘 애니메이션 ── */
@keyframes iconShuffle{
  0%,62%,100%{transform:translateX(0) rotate(0);}
  8%{transform:translateX(-6px) rotate(-22deg);}18%{transform:translateX(6px) rotate(22deg);}
  28%{transform:translateX(-5px) rotate(-16deg);}38%{transform:translateX(5px) rotate(16deg);}
  48%{transform:translateX(-2px) rotate(-8deg);}56%{transform:translateX(2px) rotate(8deg);}
}
#start-button:hover i{animation:iconShuffle 1.6s var(--es) infinite;}

@keyframes iconRewind{0%{transform:rotate(0);}38%{transform:rotate(-360deg);}100%{transform:rotate(-360deg);}}
#reset-button:hover i{animation:iconRewind 1.5s cubic-bezier(0.25,1,0.5,1) infinite;}
@keyframes resetFlash{0%,100%{box-shadow:none;}50%{box-shadow:0 0 20px var(--danger);}}

@keyframes iconExport{
  0%,55%,100%{transform:translateY(0);opacity:1;}
  20%{transform:translateY(-11px);opacity:0;}21%{transform:translateY(9px);opacity:0;}
  40%{transform:translateY(0);opacity:1;}
}
#save-main-button:hover i{animation:iconExport 1.5s var(--eo) infinite;}
@keyframes exportGlow{0%{box-shadow:0 0 0 rgba(55,114,255,0);}40%{box-shadow:0 -8px 16px -4px rgba(55,114,255,.7);}100%{box-shadow:0 0 0 rgba(55,114,255,0);}}

@keyframes iconImport{
  0%,55%,100%{transform:translateY(0);opacity:1;}
  20%{transform:translateY(11px);opacity:0;}21%{transform:translateY(-8px);opacity:0;}
  40%{transform:translateY(0);opacity:1;}
}
#upload-button:hover i{animation:iconImport 1.5s var(--eo) infinite;}
@keyframes importGlow{0%{box-shadow:0 0 0 rgba(55,114,255,0);}50%{box-shadow:0 8px 16px -4px rgba(55,114,255,.7);}100%{box-shadow:0 0 0 rgba(55,114,255,0);}}

@keyframes iconTick{from{transform:rotate(0);}to{transform:rotate(-360deg);}}
#history-button:hover i{animation:iconTick 1.8s linear infinite;}

@keyframes iconSpin{from{transform:rotate(0) scale(1.08);}to{transform:rotate(360deg) scale(1.08);}}
#settings-button:hover i{animation:iconSpin 1.1s linear infinite;color:#fff;}
@keyframes gearSpinBg{0%,100%{filter:hue-rotate(0deg);}50%{filter:hue-rotate(50deg);}}

@keyframes iconUnroll{
  0%,65%,100%{transform:scaleX(1) rotate(0);}
  12%{transform:scaleX(0.75) rotate(-5deg);}28%{transform:scaleX(1.5) rotate(3deg);}
  42%{transform:scaleX(1.2) rotate(-2deg);}55%{transform:scaleX(1) rotate(0);}
}
#patch-button:hover i{animation:iconUnroll 1.6s var(--es) infinite;}
@keyframes unrollGlow{0%,100%{box-shadow:inset 0 0 0 rgba(255,255,255,0);}50%{box-shadow:inset 6px 0 10px -6px rgba(255,255,255,.6),inset -6px 0 10px -6px rgba(255,255,255,.6);}}

@keyframes iconBounce{0%,58%,100%{transform:translateY(0);}12%{transform:translateY(-9px);}22%{transform:translateY(0);}34%{transform:translateY(-5px);}44%{transform:translateY(0);}}
@keyframes infoBlink{0%,58%,100%{filter:none;}12%{filter:brightness(3) drop-shadow(0 0 6px #fff);}22%{filter:brightness(1.3);}34%{filter:brightness(2) drop-shadow(0 0 3px #fff);}}
#info-button:hover i{animation:iconBounce 1.6s var(--eo) infinite, infoBlink 1.6s var(--eo) infinite;}

@keyframes bugGlitchBg{
  0%{background:var(--danger);}16%{background:#39FF14;}32%{background:#FF00FF;}
  48%{background:var(--danger);}64%{background:#00F0FF;}80%{background:#FFEA00;color:#fff;}100%{background:var(--danger);color:#fff;}
}
@keyframes iconWiggle{
  0%{transform:translate(0,0) rotate(0) scale(1);}8%{transform:translate(-9px,-6px) rotate(-20deg) scale(.9);}
  16%{transform:translate(8px,7px) rotate(15deg) scale(1.1);}24%{transform:translate(7px,-8px) rotate(-12deg) scale(1);}
  32%{transform:translate(-8px,8px) rotate(18deg) scale(.95);}40%{transform:translate(-6px,-3px) rotate(-8deg) scale(1.05);}
  48%{transform:translate(9px,2px) rotate(10deg) scale(.92);}56%{transform:translate(2px,-9px) rotate(-15deg) scale(1.08);}
  64%{transform:translate(-9px,4px) rotate(6deg) scale(1);}72%{transform:translate(5px,9px) rotate(-10deg) scale(.96);}
  80%{transform:translate(-3px,-7px) rotate(14deg) scale(1.1);}88%{transform:translate(7px,-2px) rotate(-6deg) scale(.94);}
  100%{transform:translate(0,0) rotate(0) scale(1);}
}
#bug-main-button:hover i{position:absolute;animation:iconWiggle .9s steps(12,end) infinite;}

/* ── Dev 버튼 매트릭스 ── */
#dev-button{position:relative;}
#dev-button .bits{position:absolute;inset:0;overflow:hidden;border-radius:inherit;display:flex;justify-content:space-between;padding:0 2px;opacity:0;transition:opacity .12s;pointer-events:none;z-index:1;}
#dev-button:hover .bits{opacity:1;}
#dev-button .bits .col{position:relative;flex:1;height:100%;}
#dev-button .bits .col span{position:absolute;left:0;right:0;text-align:center;font-family:'Courier New',monospace;font-size:8px;font-weight:700;line-height:1.05;color:#39FF14;text-shadow:0 0 4px #39FF14,0 0 8px #39FF14;animation:bitsFall linear infinite;}
#dev-button .bits .col:nth-child(1) span{animation-duration:.38s;}
#dev-button .bits .col:nth-child(2) span{animation-duration:.3s;animation-delay:-.1s;}
#dev-button .bits .col:nth-child(3) span{animation-duration:.42s;animation-delay:-.05s;}
#dev-button .bits .col:nth-child(4) span{animation-duration:.34s;animation-delay:-.18s;}
@keyframes bitsFall{0%{transform:translateY(-44px);opacity:0;}10%{opacity:1;}85%{opacity:1;}100%{transform:translateY(44px);opacity:0;}}
@keyframes iconType{0%,100%{opacity:1;transform:translateY(-1px) scale(1.08);filter:drop-shadow(0 0 4px #39FF14);}50%{opacity:.35;transform:translateY(-1px) scale(1.08);filter:drop-shadow(0 0 1px #39FF14);}}
#dev-button:hover i{animation:iconType .35s steps(2,end) infinite;}

/* ── 잠금 ── */
@keyframes iconShake{
  0%,52%,100%{transform:translateX(0);}6%{transform:translateX(-7px);}12%{transform:translateX(7px);}
  18%{transform:translateX(-7px);}24%{transform:translateX(7px);}30%{transform:translateX(-5px);}
  36%{transform:translateX(5px);}42%{transform:translateX(-2px);}48%{transform:translateX(2px);}
}
#lock-button:hover i{animation:iconShake 1.8s linear infinite;}

@media(prefers-reduced-motion:reduce){.button,.button i,.button::after,.button::before,#start-button.pulsing{animation:none !important;transition:none !important;}}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(55,114,255,.55)}70%{box-shadow:0 0 0 10px rgba(55,114,255,0)}100%{box-shadow:0 0 0 0 rgba(55,114,255,0)}}
#start-button.pulsing{animation:pulse .6s ease-out;}

/* ── 모든 다이나믹 아일랜드 버튼 호버를 계정 버튼과 동일하게 통일 ──
   (개별 회전/반짝임/글리치 애니메이션 제거 → 깔끔한 액센트 배경 + 와이드워시 + 아이콘 살짝 들림) */
#start-button:hover, #reset-button:hover, #save-main-button:hover, #upload-button:hover,
#history-button:hover, #settings-button:hover, #patch-button:hover, #info-button:hover,
#bug-main-button:hover, #download-button:hover, #account-button:hover{
  background:var(--accent); color:#fff;
  transform:translateY(-2px) scale(1.05); animation:none;
}
#reset-button:hover, #bug-main-button:hover{ background:var(--danger); }
#start-button:hover i, #reset-button:hover i, #save-main-button:hover i, #upload-button:hover i,
#history-button:hover i, #settings-button:hover i, #patch-button:hover i, #info-button:hover i,
#bug-main-button:hover i, #download-button:hover i, #account-button:hover i{
  animation:none; position:relative; transform:translateY(-1px) scale(1.06);
}
#info-button::after{ display:block; }
.button:disabled,.button:disabled:hover{
  cursor:not-allowed;
  opacity:.58;
  transform:none;
  filter:saturate(.75);
  animation:none;
}
.button:disabled i,.button:disabled:hover i{animation:none;transform:none;}

#seat-container{
  display:grid;
  margin-top:14px;
  
  grid-template-columns:64px 48px 64px 48px 64px 48px 64px 48px 64px;
  grid-auto-rows:64px;
  gap:12px;
  width:min(calc(100vw - 32px),max(360px,var(--tool-panel-width,656px)));
  height:min(604px,max(320px,var(--tool-panel-height,604px)));
  padding:24px 24px 38px;
  justify-content:center;
  align-content:start;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);box-shadow:var(--shadow);position:relative;
  transition:background .4s,border-color .4s;
  overflow:hidden;
}
.seat-tool-title{
  position:absolute;top:18px;bottom:auto;left:24px;
  pointer-events:none;
  z-index:1;
  transition:top .28s var(--es),bottom .28s var(--es),left .28s var(--es),transform .28s var(--es);
}
#seat-container.teacher-view .seat-tool-title{top:auto;bottom:18px;}
#seat-container::after{
  content:'© 2026 Eunsung Lee  ·  All Rights Reserved';
  position:absolute;bottom:10px;right:18px;
  font-size:10px;font-weight:500;color:var(--text-sub);opacity:.4;
  pointer-events:none;letter-spacing:.02em;white-space:nowrap;
}
.seat-skeleton-title{
  position:absolute;top:18px;left:24px;width:118px;height:18px;border-radius:99px;
  background:linear-gradient(90deg,var(--surface2) 0%,var(--border) 48%,var(--surface2) 100%);
  background-size:220% 100%;animation:seatSkelShimmer 1.15s ease-in-out infinite;
}
.seat-skeleton-cell{
  width:64px;height:64px;border-radius:var(--radius-md);
  background:linear-gradient(90deg,var(--surface2) 0%,var(--border) 48%,var(--surface2) 100%);
  background-size:220% 100%;animation:seatSkelShimmer 1.15s ease-in-out infinite;
  border:2px solid var(--border);
}
.seat-skeleton-desk-row{grid-column:1/-1;display:flex;justify-content:center;height:64px}
.seat-skeleton-desk-box{
  width:152px;height:64px;border-radius:var(--radius-md);border:2px solid var(--desk-border);
  background:linear-gradient(90deg,var(--desk-bg) 0%,var(--border) 48%,var(--desk-bg) 100%);
  background-size:220% 100%;animation:seatSkelShimmer 1.15s ease-in-out infinite;
}
.seat-skeleton-cell.aisle{width:48px;background:transparent;border-color:transparent;animation:none}
@keyframes seatSkelShimmer{0%{background-position:120% 0}100%{background-position:-120% 0}}

@keyframes seatSlideIn{from{opacity:0;transform:translateY(-18px) scale(.91)}to{opacity:1;transform:none}}
#seat-container.teacher-animating .seat,
#seat-container.teacher-animating .desk,
#seat-container.teacher-animating .empty{animation:seatSlideIn .3s var(--es) both;}

.seat{width:64px;height:64px;position:relative;}
.seat-inner{
  width:100%;height:100%;border-radius:var(--radius-md);
  display:flex;justify-content:center;align-items:center;
  font-weight:600;font-size:13px;color:var(--text);
  background:var(--surface2);border:2px solid var(--border);
  cursor:grab;user-select:none;position:relative;
  transition:background .45s var(--eo),border-color .45s var(--eo),color .45s var(--eo),transform .22s var(--es),box-shadow .22s;
}
.seat-inner:hover{transform:scale(1.07);box-shadow:0 4px 18px rgba(0,0,0,.13);}
.seat-inner:active{transform:scale(.96);cursor:grabbing;}
body.ptr-dragging,.ptr-dragging *{cursor:grabbing !important;}
body.rs-running #seat-container,
body.rs-running .tool-panel{pointer-events:none;cursor:wait!important;}
body.rs-running #dynamic-island .button:not(#start-button),
body.rs-running #mode-toggle,
body.rs-running #class-name-bar{pointer-events:none;opacity:.58;}

@keyframes namePopIn{0%{opacity:0;transform:scale(.55) translateY(5px);filter:blur(5px)}70%{opacity:1;transform:scale(1.09);filter:blur(0)}100%{transform:scale(1)}}

@keyframes slotDrop{
  0%  {opacity:0;transform:translateY(-14px) scaleY(1.15);filter:blur(6px);}
  55% {opacity:1;transform:translateY(3px)   scaleY(0.94);filter:blur(0);}
  75% {transform:translateY(-1px) scaleY(1.03);}
  100%{opacity:1;transform:translateY(0)     scaleY(1);   filter:blur(0);}
}
.name-char{display:inline-block;transition:opacity .3s,filter .3s,transform .3s;opacity:1;filter:blur(0);}
.name-char.flash-out{opacity:0;filter:blur(10px);transform:scale(1.1);}
.name-char.pop-in{animation:namePopIn .35s var(--es) both;}

.name-char.slot-spin{animation:slotDrop .14s var(--eo) both;}

.name-char.slot-final{animation:slotDrop .28s var(--es) both;}

.seat.male    .seat-inner{background:var(--male-bg);   border-color:var(--male-point);   color:var(--male-point);}
.seat.female  .seat-inner{background:var(--male-bg);   border-color:var(--male-point);   color:var(--male-point);}
.seat.neutral .seat-inner{background:var(--male-bg);   border-color:var(--male-point);   color:var(--male-point);}

/* drag-self: 선택된 원본 카드 */
.seat.drag-self .seat-inner{border:2px dashed var(--drag-color,var(--accent))!important;transform:scale(1.08)!important;box-shadow:0 8px 24px rgba(0,0,0,.16),0 0 0 3px var(--drag-shadow,rgba(55,114,255,.22))!important;opacity:1;}
.seat-disabled.drag-self .seat-disabled-inner{border:2px dashed var(--drag-color,var(--accent))!important;transform:scale(1.08)!important;box-shadow:0 8px 24px rgba(0,0,0,.16),0 0 0 3px var(--drag-shadow,rgba(55,114,255,.22))!important;cursor:grabbing!important;opacity:1;}

/* ghost: 커서를 따라다니는 떠있는 카드 */
#drag-ghost{position:fixed;top:0;left:0;width:64px;height:64px;pointer-events:none;z-index:9999;will-change:transform;}
#drag-ghost .seat-inner,#drag-ghost .seat-disabled-inner{
  transform:scale(1.13) rotate(-3deg)!important;
  border:2px solid var(--drag-color,var(--accent))!important;
  background:color-mix(in srgb,var(--surface2) 72%,var(--drag-color,var(--accent)) 28%)!important;
  color:var(--drag-color,var(--accent))!important;
  box-shadow:0 20px 50px rgba(0,0,0,0.22),0 0 0 3px var(--drag-shadow,rgba(55,114,255,0.25))!important;
  transition:none!important;opacity:1!important;cursor:grabbing!important;
}

/* drag-over: 글로우 (점선 아님) */
.seat.drag-over .seat-inner{background:color-mix(in srgb,var(--surface2) 65%,var(--drag-color,var(--accent)) 35%)!important;border:2px solid var(--drag-color,var(--accent))!important;transform:scale(1.06);box-shadow:0 0 0 3px var(--drag-shadow,rgba(55,114,255,0.22))!important;}

.seat:not(.drag-self) .seat-inner:hover{transform:scale(1.07);box-shadow:0 4px 18px rgba(0,0,0,.13);}

.lock-icon{position:absolute;top:4px;right:4px;width:20px;height:20px;display:flex;align-items:center;justify-content:center;font-size:10px;opacity:0;transition:opacity .2s, color .2s, transform .2s;cursor:pointer;z-index:3;}
.seat:hover .lock-icon{opacity:.55!important;}
.seat-inner:hover .lock-icon{opacity:.55!important;}
.lock-icon:hover{opacity:1!important;transform:scale(1.12);}
.seat.locked .lock-icon{opacity:1!important;top:2px;right:2px;}
.seat.locked .seat-inner{border-style:double;border-width:4px;}

.seat-no{position:absolute;bottom:4px;right:5px;font-size:9px;font-weight:700;opacity:0.85;pointer-events:none;line-height:1;font-variant-numeric:tabular-nums;}

.seat-disabled{width:64px;height:64px;position:relative;}
.seat-disabled-inner{width:100%;height:100%;border-radius:var(--radius-md);background:#D1D5DB;border:2px solid #9CA3AF;display:flex;justify-content:center;align-items:center;cursor:not-allowed;}
.seat-disabled.swap-target .seat-disabled-inner{cursor:grab;transition:background-color .2s, border-color .2s, transform .2s, box-shadow .2s;}
.seat-disabled.swap-target .seat-disabled-inner:hover{box-shadow:0 4px 18px rgba(0,0,0,.13);}
.seat-disabled.swap-target.drag-over .seat-disabled-inner{background:color-mix(in srgb,#D1D5DB 70%,var(--drag-color,var(--accent)) 30%)!important;border:2px solid var(--drag-color,var(--accent))!important;box-shadow:0 0 0 3px var(--drag-shadow,rgba(55,114,255,0.22));}
[data-theme="dark"] .seat-disabled-inner{background:#2D2D2D;border-color:#4B5563;}
@media(prefers-color-scheme:dark){[data-theme="system"] .seat-disabled-inner{background:#2D2D2D;border-color:#4B5563;}}

#seat-container{-webkit-user-select:none;user-select:none;}
img{-webkit-user-drag:none;user-drag:none;outline:1px solid rgba(0,0,0,.1);outline-offset:-1px;}
[data-theme="dark"] img{outline-color:rgba(255,255,255,.1);}
@media(prefers-color-scheme:dark){[data-theme="system"] img{outline-color:rgba(255,255,255,.1);}}
.empty{width:64px;height:64px;}
.aisle{height:64px;width:48px;}
.desk{grid-column:span 2;height:64px;background:var(--desk-bg);color:var(--desk-text);border:2px solid var(--desk-border);border-radius:var(--radius-md);display:flex;justify-content:center;align-items:center;font-weight:700;font-size:14px;transition:background .4s,color .4s;}

.desk-box{width:152px;height:64px;background:var(--desk-bg);color:var(--desk-text);border:2px solid var(--desk-border);border-radius:var(--radius-md);display:flex;justify-content:center;align-items:center;font-weight:700;font-size:14px;transition:background .4s,color .4s;}

@keyframes modalIn{from{opacity:0;transform:translateY(18px) scale(.95)}to{opacity:1;transform:none}}
.modal-overlay{position:fixed;inset:0;background:var(--overlay);backdrop-filter:blur(10px);display:none;justify-content:center;align-items:center;z-index:2000;opacity:0;transition:opacity .25s;}
.modal-overlay.show{display:flex;}
.modal-overlay.visible{opacity:1;}
.modal-box{background:var(--bg);border:1px solid var(--border);padding:22px;border-radius:var(--radius-lg);width:90%;max-width:440px;box-shadow:0 24px 64px rgba(0,0,0,.5);color:var(--text);animation:modalIn .3s var(--es) both;max-height:90vh;overflow-y:auto;}
.modal-box h2{font-size:18px;margin-bottom:14px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);padding-bottom:12px;text-wrap:balance;}
.modal-box i:not(.fa-spinner){position:relative;top:-.04em;line-height:1;}
.settings-title-icon{width:40px;height:40px;margin:-8px 0 -8px -8px;border:0;border-radius:10px;background:transparent;color:inherit;display:inline-flex;align-items:center;justify-content:center;font:inherit;cursor:default;transition:none;flex-shrink:0;}
.settings-title-icon:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.profile-list{max-height:260px;overflow-y:auto;margin-bottom:12px;display:flex;flex-direction:column;gap:8px;}
.profile-item{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);box-shadow:0 4px 12px rgba(0,0,0,.04);}
.profile-item.active{border-color:color-mix(in srgb,var(--accent) 55%,var(--border));background:color-mix(in srgb,var(--surface) 88%,var(--accent) 12%);}
.profile-name{min-width:0;font-size:13px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.profile-count{font-size:11px;color:var(--text-sub);font-variant-numeric:tabular-nums;white-space:nowrap;}
.profile-actions{display:flex;align-items:center;gap:6px;}
.profile-actions .modal-btn,.profile-save-row .modal-btn{width:auto;min-height:40px;margin:0;padding:8px 12px;font-size:11px;white-space:nowrap;}
.profile-actions .profile-delete{width:40px;min-width:40px;padding:0;}
.profile-save-panel{padding-top:14px;border-top:1px solid var(--border);}
.profile-save-label{margin-bottom:8px;font-size:12px;font-weight:700;color:var(--text-sub);}
.profile-save-row{display:flex;align-items:stretch;gap:8px;}
.class-slot-help{margin-bottom:12px;font-size:12px;line-height:1.6;color:var(--text-sub);}
#_prof_name{min-width:0;}
@media(max-width:420px){
  .profile-item{grid-template-columns:minmax(0,1fr) auto;}
  .profile-actions{grid-column:1/-1;justify-content:flex-end;}
  .profile-save-row{flex-direction:column;}
  .profile-save-row .modal-btn{width:100%;}
}

.modal-btn{width:100%;padding:13px 14px;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;margin-top:8px;transition:var(--tr);display:flex;align-items:center;justify-content:center;gap:8px;font-family:var(--app-font);line-height:1.25;}
.modal-btn:active{transform:scale(.96);}
.modal-btn.primary  {background:var(--accent);color:#fff;}

/* ── 핵심 아이콘 온보딩 ─────────────────────────────────────────────── */
.icon-onboarding{position:fixed;inset:0;z-index:9200;pointer-events:none;font-family:var(--app-font);}
.icon-onboarding-shade{position:fixed;background:color-mix(in srgb,var(--overlay) 92%,transparent);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);pointer-events:auto;}
.icon-onboarding-focus-ring{position:fixed;border:3px solid #fff;border-radius:16px;box-shadow:0 0 0 3px var(--accent),0 10px 30px rgba(0,0,0,.26);pointer-events:none;transition:top .18s var(--es),left .18s var(--es),width .18s var(--es),height .18s var(--es),border-radius .18s var(--es);}
.icon-onboarding-target-blocker{position:fixed;border-radius:16px;pointer-events:auto;cursor:default;}
.icon-onboarding-card{position:fixed;width:min(380px,calc(100vw - 24px));padding:20px;border:1px solid color-mix(in srgb,var(--accent) 28%,var(--border));border-radius:20px;background:var(--bg);color:var(--text);box-shadow:0 24px 64px rgba(0,0,0,.32);pointer-events:auto;animation:onboardingCardIn .22s var(--es) both;transition:top .18s var(--es),left .18s var(--es);}
.icon-onboarding-card:focus{outline:none;}
.icon-onboarding-meta{min-height:20px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;}
.icon-onboarding-label{font-size:11px;font-weight:800;letter-spacing:.04em;color:var(--accent);}
.icon-onboarding-progress{font-size:11px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-sub);}
.icon-onboarding-heading{display:grid;grid-template-columns:44px minmax(0,1fr);align-items:start;gap:13px;}
.icon-onboarding-icon{width:44px;height:44px;border-radius:13px;background:color-mix(in srgb,var(--accent) 12%,var(--surface));color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:17px;}
.icon-onboarding-heading h2{margin:1px 0 5px;font-size:18px;line-height:1.35;text-wrap:balance;}
.icon-onboarding-heading p{margin:0;color:var(--text-sub);font-size:13px;line-height:1.65;text-wrap:pretty;}
.icon-onboarding-dots{min-height:6px;margin:18px 0 16px;display:flex;align-items:center;justify-content:center;gap:5px;}
.icon-onboarding-dots span{width:6px;height:6px;border-radius:999px;background:var(--border);transition:width .16s ease-out,background-color .16s ease-out;}
.icon-onboarding-dots span.active{width:18px;background:var(--accent);}
.icon-onboarding-preference{min-height:40px;margin:0 -4px 12px;padding:6px 4px;display:flex;align-items:center;gap:9px;color:var(--text-sub);font-size:12px;font-weight:600;cursor:pointer;}
.icon-onboarding-actions{display:flex;align-items:center;gap:8px;}
.icon-onboarding-spacer{flex:1;}
.icon-onboarding-button{min-width:44px;min-height:44px;padding:0 13px;border:1px solid transparent;border-radius:12px;font-family:inherit;font-size:12px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;transition:background-color .15s ease-out,border-color .15s ease-out,color .15s ease-out,opacity .15s ease-out,scale .15s ease-out;}
.icon-onboarding-button:active{scale:.96;}
.icon-onboarding-button:disabled{opacity:.38;cursor:default;scale:1;}
.icon-onboarding-button.quiet{padding:0 8px;background:transparent;color:var(--text-sub);}
.icon-onboarding-button.quiet:hover{color:var(--text);background:var(--surface2);}
.icon-onboarding-button.secondary{background:var(--surface2);border-color:var(--border);color:var(--text);}
.icon-onboarding-button.secondary:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--border));color:var(--accent);}
.icon-onboarding-button.primary{background:var(--accent);color:#fff;}
.icon-onboarding-button.primary:hover{background:color-mix(in srgb,var(--accent) 88%,#000);}
.icon-onboarding.closing{opacity:0;transition:opacity .17s ease-out;}
.info-onboarding-button{margin:0 0 8px;}
@keyframes onboardingCardIn{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}
@media(max-width:480px){
  .icon-onboarding-card{padding:17px;border-radius:18px;}
  .icon-onboarding-heading{grid-template-columns:40px minmax(0,1fr);gap:11px;}
  .icon-onboarding-icon{width:40px;height:40px;border-radius:12px;}
  .icon-onboarding-heading h2{font-size:17px;}
  .icon-onboarding-button{padding:0 11px;}
  .icon-onboarding-button.quiet{font-size:11px;}
}
@media(prefers-reduced-motion:reduce){
  .icon-onboarding-focus-ring,.icon-onboarding-card,.icon-onboarding-dots span,.icon-onboarding-button{animation:none;transition:none;}
  .icon-onboarding.closing{transition:none;}
}
.modal-btn.primary:hover{filter:brightness(1.1);}
.modal-btn.secondary{background:var(--surface2);color:var(--text);}
.modal-btn.secondary:hover{background:var(--border);}
.modal-btn.danger   {background:var(--danger);color:#fff;}
.modal-btn.danger:hover{filter:brightness(1.1);}
.dev-auth-copy{margin-bottom:10px;font-size:12px;color:var(--text-sub);}
.dev-auth-error{min-height:14px;margin-top:6px;font-size:12px;line-height:14px;color:var(--danger);}
.dev-auth-actions{display:flex;gap:8px;margin-top:8px;}
.dev-auth-actions .modal-btn{margin-top:0;}
.dev-console-open i{width:18px;text-align:center;color:#22C55E;}
.dev-console-open small{margin-left:auto;color:var(--text-sub);font-size:11px;font-weight:600;}
.dev-console-layout-picker{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:8px;padding:4px;border-radius:14px;background:var(--surface2);box-shadow:inset 0 0 0 1px var(--border);}
.dev-console-layout-picker button{min-height:44px;border:0;border-radius:10px;background:transparent;color:var(--text-sub);font:inherit;font-size:12px;font-weight:750;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:background-color .16s,color .16s,box-shadow .16s,scale .16s;}
.dev-console-layout-picker button:hover{color:var(--text);background:color-mix(in srgb,var(--surface) 72%,transparent);}
.dev-console-layout-picker button.active{background:var(--surface);color:var(--accent);box-shadow:0 1px 3px rgba(0,0,0,.08);}
.dev-console-layout-picker button:active{scale:.96;}
.dev-console-modal{width:min(94vw,820px);max-width:820px;padding:22px;overflow:hidden;}
.dev-console-modal h2{margin-bottom:14px;}
.dev-console-modal .modal-body{min-width:0;}
.dev-console-shell{
  overflow:hidden;border-radius:16px;background:#0B1020;color:#DDE7F4;
  box-shadow:0 0 0 1px rgba(255,255,255,.09),0 16px 36px rgba(0,0,0,.28);
  font-family:'SFMono-Regular',Consolas,'Liberation Mono',Menlo,monospace;
  -webkit-font-smoothing:antialiased;display:flex;flex-direction:column;
}
.dev-console-dock{position:fixed;z-index:8500;top:16px;right:16px;bottom:16px;width:min(42vw,520px);opacity:0;transform:translateX(12px);filter:blur(4px);transition:opacity .18s ease-out,transform .18s ease-out,filter .18s ease-out;}
.dev-confirm-overlay{z-index:9000;}
.dev-console-dock.visible{opacity:1;transform:translateX(0);filter:blur(0);}
.dev-console-dock .dev-console-shell{height:100%;border-radius:20px;}
body.dev-console-docked{padding-right:min(44vw,552px);}
body.dev-console-docked #wrapper{min-width:0;}
@media(min-width:1181px){
  body.dev-console-docked .modal-overlay{right:calc(min(42vw,520px) + 32px);}
}
.dev-console-toolbar{height:48px;padding:4px 6px 4px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:#111827;border-bottom:1px solid rgba(255,255,255,.08);}
.dev-console-live{display:flex;align-items:center;gap:7px;color:#8B98AA;font-size:10px;font-weight:800;letter-spacing:.08em;font-variant-numeric:tabular-nums;}
.dev-console-live>span{width:8px;height:8px;border-radius:50%;background:#5BF58A;box-shadow:0 0 12px rgba(91,245,138,.72);}
.dev-console-live strong{min-width:22px;color:#DDE7F4;font-size:10px;font-weight:750;letter-spacing:0;}
.dev-console-live b{margin-left:2px;color:#5BF58A;font-size:9px;letter-spacing:.12em;}
.dev-console-toolbar-actions{display:flex;align-items:center;gap:2px;}
.dev-console-toolbar-actions button{width:40px;height:40px;border:0;border-radius:10px;background:transparent;color:#8B98AA;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:12px;transition:background-color .15s ease-out,color .15s ease-out,scale .15s ease-out;}
.dev-console-toolbar-actions button:hover{background:rgba(255,255,255,.08);color:#F8FAFC;}
.dev-console-toolbar-actions button:active{scale:.96;}
.dev-console-toolbar-actions button:focus-visible{outline:2px solid #5BF58A;outline-offset:-2px;}
.dev-console-output{height:min(52vh,390px);min-height:300px;overflow:auto;padding:10px 0;background:#0B1020;scrollbar-gutter:stable;font-size:11px;line-height:1.55;}
.dev-console-entry{display:grid;grid-template-columns:70px 48px minmax(0,1fr) 68px;align-items:start;gap:8px;padding:4px 14px;color:#CBD5E1;font-variant-numeric:tabular-nums;}
.dev-console-entry:hover{background:rgba(255,255,255,.035);}
.dev-console-entry time{color:#64748B;white-space:nowrap;}
.dev-console-level{font-size:9px;font-weight:850;letter-spacing:.04em;color:#60A5FA;padding-top:1px;}
.dev-console-message{min-width:0;color:#DDE7F4;white-space:pre-wrap;overflow-wrap:anywhere;}
.dev-console-source{color:#64748B;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.dev-console-entry.level-debug .dev-console-level{color:#94A3B8;}
.dev-console-entry.level-warn .dev-console-level{color:#FBBF24;}
.dev-console-entry.level-error .dev-console-level{color:#FB7185;}
.dev-console-entry.level-error .dev-console-message{color:#FECDD3;}
.dev-console-entry.level-success .dev-console-level{color:#5BF58A;}
.dev-console-entry.level-success .dev-console-message{color:#BBF7D0;}
.dev-console-entry.level-command{background:rgba(91,245,138,.045);}
.dev-console-entry.level-command .dev-console-level,.dev-console-entry.level-command .dev-console-message{color:#5BF58A;}
.dev-console-prompt{min-height:52px;margin:10px;padding:5px 5px 5px 13px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:9px;border-radius:12px;background:#111827;box-shadow:0 0 0 1px rgba(255,255,255,.10);transition:box-shadow .15s ease-out;}
.dev-console-prompt:focus-within{box-shadow:0 0 0 2px rgba(91,245,138,.78);}
.dev-console-prompt.awaiting-confirmation{box-shadow:0 0 0 2px rgba(251,191,36,.9);background:#171B25;}
.dev-console-prompt.awaiting-confirmation>span{color:#FBBF24;}
.dev-console-prompt.awaiting-confirmation input{caret-color:#FBBF24;}
.dev-console-prompt.awaiting-confirmation button{background:#FBBF24;color:#422006;}
.dev-console-prompt>span{color:#5BF58A;font-size:20px;line-height:1;font-weight:700;transform:translateY(-1px);}
.dev-console-prompt input{min-width:0;height:40px;border:0;outline:0;background:transparent;color:#F8FAFC;font:inherit;font-size:12px;caret-color:#5BF58A;}
.dev-console-prompt input::placeholder{color:#64748B;}
.dev-console-prompt button{min-width:76px;height:40px;padding:0 12px;border:0;border-radius:9px;background:#1E293B;color:#DDE7F4;font:inherit;font-size:11px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:7px;cursor:pointer;transition:background-color .15s ease-out,color .15s ease-out,scale .15s ease-out;}
.dev-console-prompt button:hover{background:#5BF58A;color:#052E16;}
.dev-console-prompt button:active{scale:.96;}
.dev-console-prompt button:disabled{opacity:.55;cursor:wait;scale:1;}
.dev-console-hint{padding:0 14px 12px;color:#64748B;font-size:10px;line-height:1.5;text-wrap:pretty;}
.dev-console-hint code{color:#A7F3D0;font-family:inherit;}
.dev-console-dock .dev-console-output{height:auto;min-height:0;flex:1 1 auto;}
@media(max-width:620px){
  .dev-console-modal{width:96vw;padding:16px;}
  .dev-console-output{height:52vh;min-height:260px;}
  .dev-console-entry{grid-template-columns:54px 42px minmax(0,1fr);gap:6px;padding:4px 10px;}
  .dev-console-source{display:none;}
  .dev-console-prompt{margin:8px;}
  .dev-console-prompt button{min-width:44px;width:44px;padding:0;}
  .dev-console-prompt button span{display:none;}
}
@media(max-width:1180px){
  body.dev-console-docked{padding-right:0;}
  .dev-console-dock{top:auto;left:10px;right:10px;bottom:10px;width:auto;height:min(48vh,440px);}
  .dev-console-dock .dev-console-shell{border-radius:18px;}
  body.dev-console-docked .modal-overlay{z-index:8600;}
}

.ice-input{width:100%;min-height:44px;padding:0 13px;border:1.5px solid var(--border);border-radius:10px;background:var(--surface2);color:var(--text);font-size:14px;font-family:var(--app-font);line-height:1.4;margin-top:10px;outline:none;appearance:none;-webkit-appearance:none;box-shadow:0 1px 2px rgba(0,0,0,.03);transition:border-color .15s ease-out,box-shadow .15s ease-out,background-color .15s ease-out;}
textarea.ice-input{padding:11px 13px;}
.ice-input::placeholder{color:color-mix(in srgb,var(--text-sub) 72%,transparent);opacity:1;}
.ice-input:hover{border-color:color-mix(in srgb,var(--text-sub) 55%,var(--border));}
.ice-input:focus{border-color:var(--accent);background:var(--bg);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent);}
.ice-input:disabled{opacity:.58;cursor:not-allowed;}
input[type="checkbox"]{--checkbox-accent:var(--accent);appearance:none;-webkit-appearance:none;width:20px;height:20px;min-width:20px;margin:0;border:2px solid color-mix(in srgb,var(--text-sub) 68%,var(--border));border-radius:6px;background:var(--bg);display:grid;place-content:center;cursor:pointer;box-shadow:0 1px 2px rgba(0,0,0,.04);transition:background-color .15s ease-out,border-color .15s ease-out,box-shadow .15s ease-out;}
input[type="checkbox"]::before{content:'';width:5px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:translateY(-1px) rotate(45deg) scale(0);transform-origin:center;transition:transform .12s ease-out;}
input[type="checkbox"]:hover{border-color:var(--checkbox-accent);}
input[type="checkbox"]:checked{border-color:var(--checkbox-accent);background:var(--checkbox-accent);box-shadow:0 1px 3px color-mix(in srgb,var(--checkbox-accent) 30%,transparent);}
input[type="checkbox"]:checked::before{transform:translateY(-1px) rotate(45deg) scale(1);}
input[type="checkbox"]:indeterminate{border-color:var(--checkbox-accent);background:var(--checkbox-accent);box-shadow:0 1px 3px color-mix(in srgb,var(--checkbox-accent) 30%,transparent);}
input[type="checkbox"]:indeterminate::before{width:10px;height:2px;border:0;border-radius:999px;background:#fff;transform:scale(1);}
input[type="checkbox"]:focus-visible{outline:3px solid color-mix(in srgb,var(--checkbox-accent) 24%,transparent);outline-offset:2px;}
input[type="checkbox"]:disabled{opacity:.48;cursor:not-allowed;}

.student-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-height:280px;overflow-y:auto;padding:5px;}
.student-item{padding:10px;background:var(--surface2);border-radius:8px;font-size:12px;text-align:center;cursor:pointer;transition:background-color .2s, border-color .2s, color .2s, transform .2s;border:1px solid transparent;color:var(--text);}
.student-item:hover{background:var(--accent);color:#fff;transform:scale(1.04);}

.stm-profile-bar{min-height:40px;margin-bottom:12px;display:flex;align-items:center;gap:10px;}
.stm-profile-label{flex:0 0 auto;font-size:12px;font-weight:700;color:var(--text-sub);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;}
.stm-profile-label i{width:16px;color:var(--accent);text-align:center;}
.stm-profile-manage.modal-btn{width:auto;min-width:max-content;min-height:40px;margin:0 0 0 auto;padding:0 14px;font-size:11px;}
.stm-list-heading{align-items:center;justify-content:space-between;gap:10px;}
.stm-list-heading-title{display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.stm-list-actions{display:flex;align-items:center;justify-content:flex-end;gap:6px;margin-left:auto;}
.stm-utility-btn{min-height:40px;padding:0 10px;border:1px solid var(--border);border-radius:9px;background:var(--surface2);color:var(--text-sub);font-family:inherit;font-size:11px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:5px;white-space:nowrap;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s,scale .15s;}
.stm-utility-btn:hover{border-color:var(--accent);color:var(--accent);}
.stm-utility-btn:active{scale:.96;}
@media(max-width:420px){
  .stm-list-heading{align-items:stretch;flex-direction:column;}
  .stm-list-actions{width:100%;margin-left:0;}
  .stm-utility-btn{flex:1;}
}

.stm-head,.stm-row{display:grid;grid-template-columns:38px minmax(0,1fr) 40px 40px;gap:6px;align-items:center;}
.stm-head{padding:0 2px 4px;font-size:11px;color:var(--text-sub);}
.stm-head-no,.stm-head-gender{text-align:center;}
.stm-row{margin-bottom:6px;}
.stm-row .ice-input{height:40px;margin-top:0;padding:6px;}
.stm-no{text-align:center;}
.stm-name{min-width:0;}
.stm-gender{width:40px;height:40px;padding:0;border-radius:8px;border:1.5px solid var(--border);background:transparent;cursor:pointer;font-weight:700;font-size:13px;font-family:var(--app-font);display:flex;align-items:center;justify-content:center;transition:var(--tr);}
.stm-del{width:40px;height:40px;border:none;background:transparent;color:var(--danger);cursor:pointer;font-size:15px;display:flex;align-items:center;justify-content:center;border-radius:8px;transition:background-color .2s,color .2s,transform .2s;}
.stm-del:hover{background:var(--danger);color:#fff;}

.custom-toggle{min-height:44px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--border);cursor:pointer;user-select:none;line-height:1.35;transition:opacity .2s;}
.custom-toggle:hover{opacity:.8;}
.toggle-switch{width:44px;height:24px;background:var(--border);border-radius:20px;position:relative;display:inline-flex;align-items:center;transition:background .3s;flex-shrink:0;}
.toggle-switch::after{content:'';position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;transition:left .3s var(--es);}
.custom-toggle.active .toggle-switch{background:var(--accent);}
.custom-toggle.active .toggle-switch::after{left:23px;}
.interface-setting-copy,.font-size-setting-label,.language-setting-label{display:flex;flex-direction:column;gap:2px;min-width:0;}
.interface-setting-copy small,.font-size-setting-label small,.language-setting-label small{font-size:11px;color:var(--text-sub);font-weight:500;line-height:1.35;text-wrap:pretty;}
.font-size-setting{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);}
.font-size-control{display:flex;min-height:40px;border:1.5px solid var(--border);border-radius:10px;overflow:hidden;flex-shrink:0;}
.font-size-option{min-width:58px;padding:0 10px;border:0;border-right:1px solid var(--border);background:var(--surface2);color:var(--text-sub);font-family:inherit;font-size:12px;font-weight:700;line-height:1.2;display:flex;align-items:center;justify-content:center;gap:5px;cursor:pointer;transition:background-color .15s,color .15s;}
.font-size-option:last-child{border-right:0;}
.font-size-option:hover{color:var(--accent);}
.font-size-option.active{background:var(--accent);color:#fff;}
.font-size-option i{font-size:10px;}
.language-setting{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);}
.language-control{display:flex;min-height:40px;border:1.5px solid var(--border);border-radius:10px;overflow:hidden;flex-shrink:0;}
.language-option{min-width:64px;padding:0 10px;border:0;border-right:1px solid var(--border);background:var(--surface2);color:var(--text-sub);font-family:inherit;font-size:11px;font-weight:700;line-height:1.2;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition-property:background-color,color,scale;transition-duration:150ms;transition-timing-function:ease-out;}
.language-option:last-child{border-right:0;}
.language-option:hover{color:var(--accent);}
.language-option:active{scale:.96;}
.language-option.active{background:var(--accent);color:#fff;}

.export-settings-panel,.export-roster-panel{padding:12px;border-radius:20px;background:var(--surface);box-shadow:0 0 0 1px rgba(0,0,0,.08),0 2px 8px rgba(0,0,0,.04);}
[data-theme="dark"] .export-settings-panel,[data-theme="dark"] .export-roster-panel{box-shadow:0 0 0 1px rgba(255,255,255,.1);}
@media(prefers-color-scheme:dark){[data-theme="system"] .export-settings-panel,[data-theme="system"] .export-roster-panel{box-shadow:0 0 0 1px rgba(255,255,255,.1);}}
.export-settings-title{display:flex;flex-direction:column;gap:3px;margin-bottom:8px;font-size:12px;font-weight:800;color:var(--text);}
.export-settings-title small{font-size:10px;font-weight:500;color:var(--text-sub);text-wrap:pretty;}
.export-option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin-top:6px;}
.export-option{min-height:44px;padding:8px 10px;border-radius:10px;background:var(--surface2);display:flex;align-items:center;gap:9px;font-size:11px;font-weight:650;color:var(--text);cursor:pointer;transition-property:background-color,color,scale;transition-duration:150ms;transition-timing-function:ease-out;}
.export-option:hover{background:color-mix(in srgb,var(--surface2) 78%,var(--accent) 22%);color:var(--accent);}
.export-option:active{scale:.96;}
.export-option input{flex:0 0 20px;}
.export-option span{min-width:0;line-height:1.35;text-wrap:pretty;}
.export-option span strong,.export-option span small{display:block;}
.export-option span small{margin-top:2px;font-size:10px;font-weight:500;color:var(--text-sub);}
.export-option-all{background:color-mix(in srgb,var(--surface2) 90%,var(--accent) 10%);}
.export-selection-guide{display:flex;align-items:flex-start;gap:6px;margin:8px 2px 0;color:var(--text-sub);font-size:10px;line-height:1.5;text-wrap:pretty;}
.export-selection-guide i{position:relative;top:.14em;flex:0 0 12px;color:var(--accent);text-align:center;}
.export-settings-panel .modal-btn{margin-top:8px;}
.export-roster-title{margin-bottom:8px;font-size:12px;font-weight:800;color:var(--text-sub);}
.import-warning>p{font-size:13px;line-height:1.65;color:var(--text);text-wrap:pretty;}
.import-warning-list{margin:12px 0;padding:12px;border-radius:12px;background:var(--surface2);font-size:12px;}
.import-warning-list strong{display:block;margin-bottom:6px;}
.import-warning-list ul{margin:0;padding-left:18px;color:var(--text-sub);line-height:1.7;}
.import-warning-undo{color:var(--danger)!important;font-size:11px!important;font-weight:650;}
.import-warning-actions{display:flex;gap:8px;margin-top:14px;}
.import-warning-actions .modal-btn{margin:0;min-height:44px;}
.fairness-info{min-height:64px;padding:11px 12px;border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-radius:14px;background:color-mix(in srgb,var(--accent) 7%,var(--surface2));display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:10px;transition:background-color .18s ease-out,border-color .18s ease-out;}
.fairness-info.random{border-color:var(--border);background:var(--surface2);}
.fairness-info-icon{width:34px;height:34px;border-radius:10px;background:color-mix(in srgb,var(--accent) 14%,var(--surface));color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:14px;}
.fairness-info.random .fairness-info-icon{background:var(--surface);color:var(--text-sub);}
.fairness-info-copy{min-width:0;display:flex;flex-direction:column;gap:3px;}
.fairness-info-copy strong{font-size:12px;line-height:1.35;color:var(--text);}
.fairness-info-copy small{font-size:10px;line-height:1.45;color:var(--text-sub);text-wrap:pretty;}
.fairness-mode-toggle{min-width:146px;height:44px;padding:0 12px;border:0;border-radius:12px;background:var(--surface);color:var(--text-sub);font-family:inherit;font-size:10px;font-weight:800;line-height:1.2;display:flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;box-shadow:0 0 0 1px color-mix(in srgb,var(--border) 82%,transparent);transition:background-color .15s ease-out,color .15s ease-out,box-shadow .15s ease-out,scale .15s ease-out;}
.fairness-mode-toggle>span:first-child{display:inline-flex;align-items:center;justify-content:center;min-height:24px;line-height:1;white-space:nowrap;}
.fairness-mode-toggle:hover{color:var(--accent);box-shadow:0 0 0 1px color-mix(in srgb,var(--accent) 55%,var(--border));}
.fairness-mode-toggle:active{scale:.96;}
.fairness-mode-toggle.active{color:var(--accent);}
.fairness-mode-toggle.active .toggle-switch{background:var(--accent);}
.fairness-mode-toggle.active .toggle-switch::after{left:23px;}
.fairness-seat-stack{display:flex;flex-direction:column;gap:18px;}
.front-priority-settings{padding:12px;border-radius:16px;background:var(--surface);box-shadow:0 0 0 1px color-mix(in srgb,var(--border) 88%,transparent),0 4px 12px rgba(0,0,0,.04);}
.front-priority-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;}
.front-priority-head>div:first-child{min-width:0;display:flex;flex-direction:column;gap:2px;}
.front-priority-head strong{font-size:12px;color:var(--text);}
.front-priority-head small{font-size:10px;line-height:1.4;color:var(--text-sub);}
.front-priority-actions{display:flex;align-items:center;gap:7px;flex-shrink:0;}
.front-priority-actions>span{font-size:10px;font-weight:800;color:var(--accent);white-space:nowrap;}
.front-priority-actions button{height:40px;padding:0 10px;border:0;border-radius:9px;background:var(--surface2);color:var(--text-sub);font-family:inherit;font-size:10px;font-weight:700;cursor:pointer;transition:background-color .15s,color .15s,scale .15s;}
.front-priority-actions button:hover:not(:disabled){background:var(--danger);color:#fff;}
.front-priority-actions button:active:not(:disabled){scale:.96;}
.front-priority-actions button:disabled{opacity:.45;cursor:default;}
.front-priority-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;max-height:176px;overflow-y:auto;padding:1px;}
.front-priority-student{min-width:0;height:44px;padding:0 8px;border:1px solid var(--border);border-radius:10px;background:var(--surface2);color:var(--text);font-family:inherit;display:grid;grid-template-columns:18px minmax(0,1fr) auto;align-items:center;gap:5px;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s,scale .15s;}
.front-priority-student:hover{border-color:var(--accent);}
.front-priority-student:active{scale:.96;}
.front-priority-student.active{background:color-mix(in srgb,var(--accent) 12%,var(--surface2));border-color:color-mix(in srgb,var(--accent) 70%,var(--border));color:var(--accent);}
.front-priority-student i{font-size:11px;}
.front-priority-student span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:700;text-align:left;}
.front-priority-student small{font-size:10px;font-weight:700;opacity:.62;font-variant-numeric:tabular-nums;}
.front-priority-empty{grid-column:1/-1;padding:16px;text-align:center;color:var(--text-sub);font-size:12px;}
@media(max-width:420px){
  .font-size-setting{align-items:stretch;flex-direction:column;gap:8px;}
  .font-size-control{width:100%;}
  .font-size-option{flex:1;min-width:0;}
  .language-setting{align-items:stretch;flex-direction:column;gap:8px;}
  .language-control{width:100%;}
  .language-option{flex:1;min-width:0;}
  .export-option-grid{grid-template-columns:1fr;}
  .import-warning-actions{flex-direction:column-reverse;}
  .fairness-info{grid-template-columns:34px minmax(0,1fr);}
  .fairness-mode-toggle{grid-column:1/-1;width:100%;justify-content:center;}
  .front-priority-head{align-items:flex-start;}
  .front-priority-list{grid-template-columns:repeat(2,minmax(0,1fr));}
}
.absence-settings{padding:12px;border-radius:22px;background:var(--surface);box-shadow:0 0 0 1px color-mix(in srgb,var(--border) 88%,transparent),0 4px 12px rgba(0,0,0,.04);}
.absence-settings-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;}
.absence-settings-head p{font-size:11px;line-height:1.5;color:var(--text-sub);}
.absence-clear{min-width:72px;height:40px;padding:0 10px;border:0;border-radius:9px;background:var(--surface2);color:var(--text-sub);font-family:inherit;font-size:11px;font-weight:700;cursor:pointer;transition:background-color .15s,color .15s,scale .15s;flex-shrink:0;}
.absence-clear:hover:not(:disabled){background:var(--danger);color:#fff;}
.absence-clear:active:not(:disabled){scale:.96;}
.absence-clear:disabled{opacity:.45;cursor:default;}
.absence-student-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;max-height:176px;overflow-y:auto;padding:1px;}
.absence-student{min-width:0;height:44px;padding:0 8px;border:1px solid var(--border);border-radius:10px;background:var(--surface2);color:var(--text);font-family:inherit;display:grid;grid-template-columns:18px minmax(0,1fr) auto;align-items:center;gap:5px;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s,scale .15s;}
.absence-student:hover{border-color:var(--accent);}
.absence-student:active{scale:.96;}
.absence-student.active{background:color-mix(in srgb,var(--danger) 12%,var(--surface2));border-color:color-mix(in srgb,var(--danger) 70%,var(--border));color:var(--danger);}
.absence-icon{display:flex;align-items:center;justify-content:center;font-size:11px;}
.absence-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:700;text-align:left;}
.absence-no{font-size:10px;font-weight:700;opacity:.62;font-variant-numeric:tabular-nums;}
.absence-empty{grid-column:1/-1;padding:16px;text-align:center;color:var(--text-sub);font-size:12px;}
.student-emphasis-settings{display:flex;flex-direction:column;gap:12px;}
.student-emphasis-block{padding:12px;border-radius:16px;background:var(--surface);box-shadow:0 0 0 1px color-mix(in srgb,var(--border) 88%,transparent),0 4px 12px rgba(0,0,0,.04);}
.student-emphasis-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:9px;}
.student-emphasis-title>span{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:800;color:var(--text);}
.student-emphasis-title>span i{width:16px;color:var(--accent);text-align:center;}
.student-emphasis-title small{font-size:10px;font-weight:600;line-height:1.4;color:var(--text-sub);text-align:right;text-wrap:pretty;}
.student-emphasis-list{display:flex;flex-direction:column;gap:6px;max-height:116px;overflow-y:auto;margin-bottom:8px;}
.student-emphasis-empty{padding:8px 4px;font-size:11px;color:var(--text-sub);}
.student-emphasis-add{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.student-emphasis-add.color-add-row{row-gap:14px;}
.student-emphasis-dropdown{flex:1;min-width:120px;}
.student-emphasis-dropdown .mini-dd-trigger,.student-emphasis-add .con-add-btn{height:40px;}
.student-color-swatches{display:flex;align-items:center;gap:12px;flex:1 0 100%;padding:4px;}
.student-color-swatch{width:40px;height:40px;border-radius:50%;background:var(--swatch-color);cursor:pointer;box-shadow:0 0 0 2px transparent;transition:box-shadow .15s ease-out,scale .15s ease-out;flex-shrink:0;}
.student-color-swatch:hover{box-shadow:0 0 0 2px color-mix(in srgb,var(--swatch-color) 60%,var(--text));}
.student-color-swatch.active{box-shadow:0 0 0 3px var(--surface),0 0 0 5px var(--text);}
.student-color-swatch:active{scale:.96;}
.student-color-swatch:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.bold-preview{width:24px;height:24px;border-radius:7px;background:color-mix(in srgb,var(--accent) 12%,var(--surface));color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:900;flex-shrink:0;}
.student-name-bold{font-weight:850!important;}
.group-gender-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;}
.group-gender-option{min-width:0;min-height:92px;padding:10px 8px;border:1.5px solid var(--border);border-radius:11px;background:var(--surface2);color:var(--text-sub);font-family:inherit;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s,scale .15s;}
.group-gender-option:active{scale:.96;}
.group-gender-option:hover{border-color:var(--accent);color:var(--accent);}
.group-gender-option.active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,var(--surface2));color:var(--accent);}
.group-gender-icon{width:32px;height:32px;border-radius:9px;background:var(--surface);color:var(--text-sub);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background-color .15s,color .15s;}
.group-gender-option:hover .group-gender-icon{color:var(--accent);}
.group-gender-option.active .group-gender-icon{background:var(--accent);color:#fff;}
.group-gender-icon i{font-size:13px;}
.group-gender-option>span:not(.group-gender-icon){min-width:0;width:100%;font-size:12px;font-weight:800;line-height:1.3;text-align:center;white-space:nowrap;}
.group-gender-option small{display:block;margin-top:3px;font-size:9px;font-weight:600;line-height:1.4;color:var(--text-sub);white-space:normal;text-wrap:balance;}
.group-gender-help{font-size:10px;line-height:1.5;color:var(--text-sub);margin-top:0;display:flex;align-items:center;gap:6px;text-wrap:pretty;}
.group-gender-help i{flex-shrink:0;}
@media(max-width:420px){
  .absence-student-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .group-gender-options{grid-template-columns:1fr;}
  .group-gender-option{min-height:56px;flex-direction:row;justify-content:flex-start;padding:8px 12px;text-align:left;}
  .group-gender-option>span:not(.group-gender-icon){text-align:left;white-space:normal;}
  .group-gender-option small{text-align:left;text-wrap:pretty;}
  .student-emphasis-title{align-items:flex-start;flex-direction:column;gap:2px;}
  .student-emphasis-title small{text-align:left;}
  .student-color-swatches{overflow-x:auto;padding:3px 2px 5px;}
}
.toggle-preview-badge{font-size:10px;font-weight:700;padding:2px 7px;border-radius:20px;margin-left:8px;transition:opacity .3s, transform .3s, background-color .3s, color .3s;opacity:0;transform:scale(.8);font-variant-numeric:tabular-nums;}
.toggle-preview-badge.visible{opacity:1;transform:scale(1);}
.badge-on  {background:#DCFCE7;color:#16A34A;}
.badge-off {background:var(--surface2);color:var(--text-sub);}
.badge-near{background:#DCFCE7;color:#16A34A;}
.badge-far {background:#FEE2E2;color:#DC2626;}

.custom-select{position:relative;width:100%;user-select:none;}
.select-trigger{padding:10px 12px;background:var(--surface2);border-radius:8px;font-size:13px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;border:1px solid var(--border);transition:border-color .2s;}
.select-trigger:hover{border-color:var(--accent);}
.select-options{position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--bg);border:1px solid var(--border);border-radius:10px;display:none;z-index:100;box-shadow:0 8px 24px rgba(0,0,0,.15);overflow:hidden;}
.select-options.show{display:block;animation:modalIn .2s var(--es) both;}
.option-item{padding:12px;font-size:13px;cursor:pointer;color:var(--text);display:flex;align-items:center;gap:8px;transition:background .15s;}
.option-item:hover{background:var(--surface2);}

.section-label{font-size:11px;font-weight:700;color:var(--text-sub);letter-spacing:.05em;text-transform:uppercase;margin-bottom:8px;margin-top:12px;display:flex;align-items:center;gap:7px;line-height:1.3;}

.constraint-list{display:flex;flex-direction:column;gap:6px;max-height:160px;overflow-y:auto;margin-bottom:10px;}
.constraint-item{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:9px;border:1px solid var(--border);font-size:12px;background:var(--surface2);animation:fadeUp .2s var(--es) both;}
.constraint-type-badge{font-size:10px;font-weight:700;padding:2px 7px;border-radius:20px;flex-shrink:0;}
.constraint-desc{flex:1;color:var(--text);}
.constraint-del{background:none;border:none;color:var(--text-sub);cursor:pointer;font-size:11px;padding:3px 5px;border-radius:5px;transition:background-color .15s, color .15s, transform .15s;flex-shrink:0;font-family:var(--app-font);position:relative;}
.constraint-del::before,.history-delete::before{content:'';position:absolute;inset:50%;width:40px;height:40px;transform:translate(-50%,-50%);}
.card-remove::before,.group-lock::before,.lock-icon::after{content:'';position:absolute;inset:50%;width:40px;height:40px;transform:translate(-50%,-50%);}
.constraint-del:hover{background:var(--danger);color:#fff;}

.con-form{display:flex;flex-direction:column;gap:6px;}
.con-row1{display:grid;grid-template-columns:1fr 1fr;gap:6px;}
.con-row2{display:grid;grid-template-columns:auto 1fr auto;gap:6px;align-items:stretch;}

.mini-dd{position:relative;user-select:none;}
.mini-dd-trigger{height:40px;padding:0 10px;border:1.5px solid var(--border);border-radius:8px;background:var(--surface2);color:var(--text);font-size:12px;font-family:var(--app-font);display:flex;align-items:center;justify-content:space-between;gap:4px;cursor:pointer;transition:border-color .2s;white-space:nowrap;overflow:hidden;}
.mini-dd-trigger:hover{border-color:var(--accent);}
.mini-dd-trigger i{font-size:9px;opacity:.6;flex-shrink:0;}
.mini-dd-opts{position:absolute;top:calc(100% + 4px);left:0;right:0;min-width:120px;background:var(--bg);border:1px solid var(--border);border-radius:10px;z-index:300;box-shadow:0 8px 24px rgba(0,0,0,.18);display:none;max-height:180px;overflow-y:auto;}
.mini-dd-opts.show{display:block;animation:modalIn .18s var(--es) both;}
.mini-dd-opt{padding:9px 12px;font-size:12px;cursor:pointer;color:var(--text);transition:background-color .12s;white-space:nowrap;}
.mini-dd-opt:hover{background:var(--surface2);}
.mini-dd-opt.active{background:var(--accent);color:#fff;}

.type-toggle-btn{height:40px;padding:0 12px;border:1.5px solid var(--border);border-radius:8px;background:var(--surface2);color:var(--text);font-size:12px;font-weight:700;cursor:pointer;white-space:nowrap;transition:background-color .2s, border-color .2s, color .2s, transform .2s;font-family:var(--app-font);display:flex;align-items:center;justify-content:center;gap:5px;}
.type-toggle-btn.near{border-color:#16A34A;color:#16A34A;background:#DCFCE7;}
.type-toggle-btn.far {border-color:#DC2626;color:#DC2626;background:#FEE2E2;}

.radius-wrap{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-sub);}
.radius-input{width:40px;height:40px;padding:0 6px;border:1.5px solid var(--border);border-radius:8px;background:var(--surface2);color:var(--text);font-size:12px;font-family:var(--app-font);outline:none;text-align:center;transition:border-color .2s;}
.radius-input:focus{border-color:var(--accent);}
input[type="number"]{-moz-appearance:textfield;appearance:textfield;}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0;}

.con-add-btn{height:40px;padding:0 14px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:700;cursor:pointer;white-space:nowrap;transition:var(--tr);font-family:var(--app-font);display:flex;align-items:center;justify-content:center;gap:5px;}
.con-add-btn:hover{filter:brightness(1.1);transform:translateY(-1px);}
.con-add-btn:active{transform:scale(.96);}
.compact-action{min-height:40px;padding:0 12px;border:0;border-radius:8px;color:#fff;font-family:var(--app-font);font-size:11px;font-weight:750;line-height:1.25;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;transition:filter .15s ease-out,scale .15s ease-out;}
.compact-action:hover{filter:brightness(1.08);}
.compact-action:active{scale:.96;}
.primary-action{background:var(--accent);}
.success-action{background:#16A34A;}
.danger-action{background:var(--danger);}

.history-list{display:flex;flex-direction:column;gap:8px;max-height:340px;overflow-y:auto;padding:2px;}
.history-item{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;transition:var(--tr);}
.history-item:hover{border-color:var(--accent);background:var(--surface);transform:translateX(4px);}
.history-item:hover .history-restore{opacity:1;}
.history-num{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0;}
.history-info{flex:1;min-width:0;}
.history-date{font-size:12px;font-weight:700;color:var(--text);}
.history-preview{font-size:11px;color:var(--text-sub);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.history-restore{font-size:11px;font-weight:600;color:var(--accent);opacity:0;transition:opacity .2s;white-space:nowrap;flex-shrink:0;}
.history-delete{width:24px;height:24px;border-radius:6px;background:transparent;border:none;cursor:pointer;color:var(--text-sub);font-size:11px;display:flex;align-items:center;justify-content:center;transition:background-color .2s, color .2s, transform .2s;flex-shrink:0;position:relative;}
.history-delete:hover{background:var(--danger);color:#fff;}
.history-empty{text-align:center;padding:30px;color:var(--text-sub);font-size:13px;}

#notification-center{position:fixed;top:18px;right:18px;z-index:3100;width:min(380px,calc(100vw - 36px));display:flex;flex-direction:column;align-items:stretch;gap:10px;pointer-events:none;}
.notification-card{--notification-color:var(--accent);position:relative;min-height:88px;padding:14px 48px 14px 14px;border-radius:16px;background:color-mix(in srgb,var(--surface) 94%,transparent);color:var(--text);box-shadow:0 0 0 1px rgba(0,0,0,.07),0 12px 34px rgba(15,23,42,.18);backdrop-filter:blur(18px) saturate(1.15);display:grid;grid-template-columns:36px minmax(0,1fr);gap:11px;opacity:0;translate:12px -8px;scale:.96;filter:blur(4px);pointer-events:auto;overflow:hidden;transition-property:opacity,translate,scale,filter;transition-duration:220ms;transition-timing-function:cubic-bezier(.2,0,0,1);}
.notification-card.notification-visible{opacity:1;translate:0 0;scale:1;filter:blur(0);}
.notification-card.notification-closing{opacity:0;translate:0 -12px;scale:.98;filter:blur(3px);transition-duration:150ms;pointer-events:none;}
.notification-card.notification-success{--notification-color:#16A34A}.notification-card.notification-warning{--notification-color:#D97706}.notification-card.notification-error{--notification-color:var(--danger)}
.notification-icon{width:36px;height:36px;border-radius:11px;background:color-mix(in srgb,var(--notification-color) 13%,var(--surface));color:var(--notification-color);display:flex;align-items:center;justify-content:center;font-size:16px;}
.notification-content{min-width:0}.notification-heading{min-height:22px;display:flex;align-items:center;gap:7px}.notification-heading strong{font-size:13px;font-weight:800;line-height:1.35;text-wrap:balance}.notification-count{padding:2px 6px;border-radius:999px;background:color-mix(in srgb,var(--notification-color) 12%,var(--surface2));color:var(--notification-color);font-size:10px;font-weight:800;font-variant-numeric:tabular-nums}.notification-card p{margin:2px 0 0;color:var(--text-sub);font-size:12px;font-weight:550;line-height:1.55;white-space:normal}.notification-details{margin-top:7px;padding-top:7px;border-top:1px solid var(--border);color:var(--text-sub);font-size:11px;line-height:1.5}.notification-card time{display:block;margin-top:5px;color:var(--text-sub);font-size:9px;font-weight:650;opacity:.68;font-variant-numeric:tabular-nums}.notification-close{position:absolute;top:6px;right:6px;width:40px;height:40px;padding:0;border:0;border-radius:10px;background:transparent;color:var(--text-sub);display:flex;align-items:center;justify-content:center;cursor:pointer;transition-property:background-color,color,scale;transition-duration:150ms;transition-timing-function:ease-out}.notification-close:hover{background:var(--surface2);color:var(--text)}.notification-close:active{scale:.96}.notification-progress{position:absolute;left:0;bottom:0;width:100%;height:3px;background:var(--notification-color);transform-origin:left center;animation:notificationProgress var(--notification-duration,5200ms) linear forwards}.notification-paused .notification-progress{animation-play-state:paused}.notification-pulse{animation:notificationPulse 220ms cubic-bezier(.2,0,0,1)}
@keyframes notificationProgress{from{scale:1 1}to{scale:0 1}}@keyframes notificationPulse{50%{scale:.98}}
@media(prefers-color-scheme:dark){.notification-card{box-shadow:0 0 0 1px rgba(255,255,255,.1),0 18px 42px rgba(0,0,0,.55)}}
@media(max-width:620px){#notification-center{top:12px;right:12px;width:calc(100vw - 24px);gap:8px}.notification-card{min-height:82px;padding:12px 46px 12px 12px;border-radius:14px}}

.info-modal-content{font-size:13px;line-height:1.8}.info-modal-content>p{margin:0}.info-modal-subtitle{margin-top:6px!important;color:var(--text-sub)}.info-modal-content ul{margin:12px 0 16px;padding-left:18px}.info-modal-content li+li{margin-top:3px}.info-guide-link{width:100%;margin:0;display:flex;text-decoration:none}.info-modal-copyright{margin-top:14px;padding-top:12px;border-top:1px solid var(--border);font-size:11px;color:var(--text-sub)}

@media(max-width:620px){
  #seat-container{grid-template-columns:44px 32px 44px 32px 44px 32px 44px 32px 44px;grid-auto-rows:44px;gap:8px;padding:14px 14px 30px;height:360px;}
  .seat-tool-title{top:14px;bottom:auto;left:18px;}
  #seat-container.teacher-view .seat-tool-title{top:auto;bottom:14px;left:18px;}
  .seat,.empty{width:44px;height:44px;} .aisle{width:32px;height:44px;} .seat-inner{font-size:11px;} .desk{height:44px;font-size:12px;}
  .seat-skeleton-title{top:14px;left:18px;width:96px;height:16px}
  .seat-skeleton-cell{width:44px;height:44px}
  .seat-skeleton-desk-row{height:44px}
  .seat-skeleton-desk-box{width:104px;height:44px}
  .seat-skeleton-cell.aisle{width:32px}
}

#legal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:9999;display:flex;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(4px);}
#legal-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px 24px 20px;max-width:460px;width:100%;box-shadow:0 8px 40px rgba(0,0,0,.25);display:flex;flex-direction:column;gap:14px;max-height:88vh;}
#legal-box h3{font-size:15px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px;margin:0;flex-shrink:0;}
#legal-scroll{overflow-y:auto;flex:1;padding-right:4px;}
#legal-scroll::-webkit-scrollbar{width:0;height:0;display:none;background:transparent;}
#legal-scroll::-webkit-scrollbar-thumb{background:transparent;}
#legal-box .legal-item{margin-bottom:14px;}
#legal-box .legal-item:last-child{margin-bottom:0;}
#legal-box .legal-label{font-size:12px;font-weight:700;color:var(--text);margin-bottom:4px;display:flex;align-items:center;gap:6px;}
#legal-box .legal-desc{font-size:12px;line-height:1.65;color:var(--text-sub);margin:0;}
#legal-box .legal-law{display:inline-block;margin-top:4px;font-size:11px;font-weight:600;color:var(--accent);background:rgba(55,114,255,0.10);border-radius:4px;padding:2px 7px;}
#legal-box .legal-notice{font-size:11px;color:var(--text-sub);margin-top:6px;padding-top:12px;border-top:1px solid var(--border);flex-shrink:0;}
#legal-box .legal-btns{display:flex;gap:8px;margin-top:4px;}
#legal-box .legal-btns button{flex:1;padding:11px 0;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;font-family:var(--app-font);transition:var(--tr);}
.legal-hide{background:var(--surface2);color:var(--text-sub);}
.legal-hide:hover{background:var(--border);}
.legal-close{background:var(--accent);color:#fff;}
.legal-close:hover{filter:brightness(1.1);}

#cookie-banner{position:fixed;bottom:16px;right:16px;z-index:4000;max-width:300px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:14px 16px;box-shadow:0 4px 20px rgba(0,0,0,.15);font-size:12px;color:var(--text-sub);line-height:1.6;transition:opacity .3s,transform .3s;opacity:0;transform:translateY(8px);pointer-events:none;}
#cookie-banner.show{opacity:1;transform:translateY(0);pointer-events:auto;}
#cookie-banner strong{color:var(--text);font-weight:600;}
#cookie-banner-btns{display:flex;gap:6px;margin-top:10px;}
#cookie-accept{flex:1;padding:6px 0;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer;}
#cookie-decline{flex:1;padding:6px 0;background:transparent;color:var(--text-sub);border:1px solid var(--border);border-radius:8px;font-size:11px;font-weight:500;cursor:pointer;}
#cookie-decline:hover{background:var(--surface2);}
#ip-badge{position:fixed;bottom:12px;left:16px;z-index:100;font-size:10px;font-weight:500;color:var(--text-sub);opacity:.45;pointer-events:none;letter-spacing:.02em;font-family:var(--app-font);}
#site-legal-links{position:fixed;right:16px;bottom:2px;z-index:120;display:flex;align-items:center;justify-content:flex-end;gap:2px;max-width:calc(100vw - 32px);font-size:10px;font-weight:600;color:var(--text-sub);opacity:.55;transition:opacity .2s;font-family:var(--app-font);}
#site-legal-links:hover,#site-legal-links:focus-within{opacity:1;}
#site-legal-links a{min-height:40px;padding:0 5px;display:inline-flex;align-items:center;color:inherit;text-decoration:none;white-space:nowrap;transition:color .2s;}
#site-legal-links a + a::before{content:'·';margin-right:10px;color:var(--text-sub);opacity:.7;}
#site-legal-links a:hover,#site-legal-links a:focus-visible{color:var(--accent);outline:none;}
body:has(#cookie-banner.show) #site-legal-links{opacity:0;pointer-events:none;}
@media(max-width:620px){
  #site-legal-links{right:10px;bottom:2px;max-width:calc(100vw - 20px);font-size:9px;gap:0;flex-wrap:wrap;row-gap:0;}
  #site-legal-links a{min-height:40px;padding:0 3px;}
  #site-legal-links a + a::before{margin-right:6px;}
}
.tool-area{display:flex;justify-content:center;margin-top:14px;width:100%;}
.tool-panel{width:min(calc(100vw - 32px),max(360px,var(--tool-panel-width,656px)));height:min(604px,max(320px,var(--tool-panel-height,604px)));background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px 24px 38px;display:flex;flex-direction:column;gap:16px;box-shadow:var(--shadow);position:relative;overflow:visible;}
.tool-panel::after{content:'© 2026 Eunsung Lee  ·  All Rights Reserved';position:absolute;bottom:10px;right:18px;font-size:10px;font-weight:500;color:var(--text-sub);opacity:.4;pointer-events:none;letter-spacing:.02em;white-space:nowrap;}
.tool-skeleton-panel{overflow:hidden;}
.tool-skeleton-heading,.tool-skeleton-subheading,.tool-skeleton-student-card,.tool-skeleton-group-title,.tool-skeleton-group-card{background:linear-gradient(90deg,var(--surface2) 0%,var(--border) 48%,var(--surface2) 100%);background-size:220% 100%;animation:seatSkelShimmer 1.15s ease-in-out infinite;}
.tool-skeleton-heading{width:132px;height:20px;border-radius:999px;flex-shrink:0;}
.tool-skeleton-subheading{width:104px;height:14px;border-radius:999px;flex-shrink:0;}
.tool-skeleton-pick-result{min-height:150px;display:flex;align-items:center;justify-content:center;}
.tool-skeleton-student-card{width:64px;height:64px;border-radius:var(--radius-md);box-shadow:0 0 0 2px var(--border);display:inline-block;flex:0 0 64px;}
.tool-skeleton-student-card.small{width:54px;height:54px;flex-basis:54px;}
.tool-skeleton-chip-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.tool-skeleton-group-list{display:flex;flex-direction:column;gap:10px;overflow:hidden;}
.tool-skeleton-group-card{min-height:96px;padding:12px;border-radius:12px;display:flex;flex-direction:column;gap:12px;box-shadow:inset 4px 0 color-mix(in srgb,var(--accent) 35%,var(--border));}
.tool-skeleton-group-title{width:72px;height:14px;border-radius:999px;}
.tool-title{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px;color:var(--text);flex-wrap:wrap;}
.tool-status-badge{min-height:24px;padding:3px 8px;border-radius:999px;background:color-mix(in srgb,var(--accent) 10%,var(--surface2));color:var(--accent);font-size:10px;font-weight:800;display:inline-flex;align-items:center;gap:4px;white-space:nowrap;font-variant-numeric:tabular-nums;}
.tool-status-badge.absent{background:color-mix(in srgb,var(--danger) 10%,var(--surface2));color:var(--danger);}
.tool-form{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text);}
.tool-field{height:46px;display:inline-flex;align-items:center;gap:8px;padding:0 12px;border:1.5px solid var(--border);border-radius:10px;background:var(--surface2);color:var(--text-sub);font-size:13px;font-weight:700;}
.tool-field.compact{padding-right:12px;}
.tool-field .ice-input{width:56px;height:40px;margin:0;padding:0 6px;border-radius:9px;text-align:center;font-size:15px;font-weight:800;background:var(--bg);}
.tool-check{height:42px;display:flex;align-items:center;gap:7px;font-size:12px;color:var(--text-sub);cursor:pointer;padding:0 10px;border:1px solid var(--border);border-radius:10px;background:var(--surface2);}
.tool-check input{cursor:pointer;}
.seg2{display:flex;height:46px;}
.seg2-btn{padding:0 18px;font-size:13px;font-weight:800;border:1.5px solid var(--border);background:var(--surface2);color:var(--text-sub);cursor:pointer;font-family:inherit;display:flex;align-items:center;justify-content:center;gap:8px;transition:var(--tr);}
.seg2-btn i{font-size:14px;}
.seg2-btn:first-child{border-radius:10px 0 0 10px;}
.seg2-btn:last-child{border-radius:0 10px 10px 0;border-left:none;}
.seg2-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);}
.pick-result{min-height:140px;display:flex;align-items:center;justify-content:center;overflow:visible;width:100%;padding:8px;}
.pick-big{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;width:100%;max-width:100%;padding:8px;}
.tool-student-card{
  width:64px;height:64px;border-radius:var(--radius-md);
  display:inline-flex;justify-content:center;align-items:center;
  font-weight:600;font-size:13px;color:var(--male-point);
  background:var(--male-bg);border:2px solid var(--male-point);
  position:relative;user-select:none;text-align:center;line-height:1;
  font-variant-numeric:tabular-nums;
  transition:background .45s var(--eo),border-color .45s var(--eo),color .45s var(--eo),transform .22s var(--es),box-shadow .22s;
}
.tool-student-card:hover{transform:scale(1.07);box-shadow:0 4px 18px rgba(0,0,0,.13);}
.tool-student-card.empty-card{background:var(--male-bg);border-style:solid;border-color:var(--male-point);color:var(--male-point);}
.pick-name{padding:0;min-width:64px;}
.pick-history-label{font-size:11px;color:var(--text-sub);margin-bottom:6px;font-variant-numeric:tabular-nums;}
.pick-history{overflow-y:auto;scrollbar-gutter:auto;min-height:0;width:100%;padding:8px 10px 12px;}
.pick-chips{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-start;justify-content:flex-start;width:100%;}
.pick-chip{padding:0;min-width:64px;}
.removable-card{position:relative;}
.student-card-wrap{position:relative;display:inline-flex;flex:0 0 auto;}
.card-remove,.group-lock{width:20px;height:20px;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:10px;transition:background-color .2s, color .2s, opacity .2s, transform .2s, box-shadow .2s;position:relative;}
.card-remove{position:absolute;top:4px;right:4px;z-index:2;opacity:0;background:transparent;color:var(--male-point);box-shadow:none;font-size:10px;}
.student-card-wrap:hover .card-remove,.student-card-wrap:focus-within .card-remove{opacity:1;}
.card-remove:hover{background:transparent;color:var(--male-point);transform:scale(1.14);box-shadow:none;}
.group-result{display:flex;flex-direction:column;gap:10px;margin-top:4px;overflow-y:auto;padding-right:2px;min-height:0;flex:1 1 auto;}
.group-card{--group-color:var(--accent);background:color-mix(in srgb,var(--group-color) 7%,var(--surface2));border:1px solid color-mix(in srgb,var(--group-color) 32%,var(--border));border-left:4px solid var(--group-color);border-radius:12px;padding:12px;transition:background-color .18s,border-color .18s,box-shadow .18s;}
.group-card.drag-over{border-color:var(--accent);background:color-mix(in srgb,var(--surface2) 78%,var(--accent) 22%);box-shadow:0 0 0 3px rgba(55,114,255,.16);}
.group-add-btn{height:44px;border:1px dashed var(--border);border-radius:12px;background:transparent;color:var(--text-sub);font-size:13px;font-weight:800;font-family:inherit;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:background-color .2s,border-color .2s,color .2s,transform .2s;flex:0 0 44px;width:100%;}
.group-add-btn:hover{background:color-mix(in srgb,var(--surface2) 78%,var(--accent) 22%);border-color:var(--accent);color:var(--accent);transform:translateY(-1px);}
.group-add-btn:active{transform:none;scale:.96;}
.group-chip{cursor:grab;transition:transform .15s, box-shadow .15s, opacity .15s;}
.group-empty{display:none!important;}
.group-preview-empty{cursor:default;pointer-events:none;}
.group-member-wrap{position:relative;display:inline-flex;}
.group-lock{position:absolute;top:4px;right:4px;opacity:0;background:transparent;color:currentColor;box-shadow:none;}
.group-member-wrap:hover .group-lock,.group-lock.locked{opacity:1;}
.group-member-wrap:hover .group-lock{opacity:.55;}
.group-lock.locked{background:transparent;color:currentColor;opacity:1!important;}
.group-chip.locked{border-style:double;border-width:4px;cursor:default;}
.group-chip.locked .group-lock{top:2px;right:2px;}
.group-chip:active{cursor:grabbing;}
.group-chip.drag-self{border:2px dashed var(--accent)!important;transform:scale(1.08)!important;box-shadow:0 8px 24px rgba(0,0,0,.16),0 0 0 3px rgba(55,114,255,.22)!important;opacity:1;}
.group-chip.drag-self .name-char,.group-chip.drag-self .seat-no{opacity:1;}
.group-chip.drag-over{background:color-mix(in srgb,var(--surface2) 65%,var(--accent) 35%)!important;border:2px solid var(--accent)!important;transform:scale(1.06);box-shadow:0 0 0 3px rgba(55,114,255,.22)!important;}
.group-card-title{font-size:14px;font-weight:700;color:var(--group-color);margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.group-name-label{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.group-count{margin-left:auto;font-size:11px;font-weight:500;color:var(--text-sub);font-variant-numeric:tabular-nums;white-space:nowrap;}
.group-delete{width:40px;height:40px;margin:-10px -10px -10px 0;border:0;border-radius:10px;background:transparent;color:var(--text-sub);display:inline-flex;align-items:center;justify-content:center;flex:0 0 40px;cursor:pointer;font-size:12px;transition:background-color .16s,color .16s,transform .16s;}
.group-delete:hover{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger);}
.group-delete:active{transform:scale(.96);}

/* PNG captures a detached copy of the visible result surface, so the live UI never flashes. */
.png-capture-stage{position:fixed;left:-100000px;top:0;z-index:-1;display:block;pointer-events:none;contain:layout style;}
.png-capture-stage,.png-capture-stage *{animation:none!important;transition:none!important;caret-color:transparent!important;box-sizing:border-box;}
.png-capture-target{margin:0!important;transform:none!important;box-shadow:none!important;}
.png-capture-target::after{content:none!important;}
.png-capture-copyright{position:absolute;right:18px;bottom:10px;z-index:2;font-size:10px;font-weight:500;line-height:1;color:var(--text-sub);opacity:.4;pointer-events:none;letter-spacing:.02em;white-space:nowrap;}
.png-capture-group{height:auto!important;max-height:none!important;overflow:visible!important;}
.png-capture-group .group-result{height:auto!important;max-height:none!important;overflow:visible!important;flex:none!important;}
.png-capture-group .group-add-btn{display:none!important;}

/* PNG export is rendered in its own fixed layout so viewport, zoom and UI theme do not affect it. */
.png-export-stage{
  position:fixed;left:-100000px;top:0;z-index:-1;display:inline-block;
  pointer-events:none;contain:layout style paint;
  font-family:var(--app-font);
  font-synthesis:none;text-rendering:geometricPrecision;-webkit-font-smoothing:antialiased;
}
.png-export-stage,.png-export-stage *{animation:none!important;transition:none!important;box-sizing:border-box;}
.png-export-tray{
  display:inline-flex;flex-direction:column;gap:22px;width:max-content;min-width:680px;
  padding:28px;background:var(--png-bg);color:var(--png-text);border:1px solid var(--png-border);
  border-radius:20px;box-shadow:var(--png-shadow);overflow:hidden;
}
.png-export-header{height:34px;display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.png-export-header h1{margin:0;font-size:20px;font-weight:800;line-height:1;letter-spacing:-.02em;color:var(--png-text);}
.png-export-title-icon{width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;background:var(--png-card-bg);color:var(--png-accent);}
.png-export-title-icon svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;outline:none;}
.png-export-title-icon svg path[d*="m12 3"]{fill:currentColor;stroke:none;}
.png-export-student{
  position:relative;display:flex;align-items:center;justify-content:center;flex:0 0 auto;
  background:var(--png-student-bg);border:2px solid var(--png-student-color);color:var(--png-student-color);
  border-radius:12px;font-variant-numeric:tabular-nums;overflow:hidden;
}
.png-export-student-name{font-size:13px;font-weight:var(--png-student-weight);line-height:1.15;text-align:center;white-space:nowrap;}
.png-export-student-no{position:absolute;right:6px;bottom:5px;font-size:9px;font-weight:750;line-height:1;opacity:.82;}

.png-export-seat-tray{padding-bottom:30px;}
.png-export-seat-grid{display:grid;grid-auto-rows:76px;gap:10px;align-items:center;justify-items:center;align-self:center;}
.png-export-seat-cell,.png-export-seat-spacer,.png-export-seat-disabled{width:76px;height:76px;}
.png-export-seat-spacer{background:transparent;}
.png-export-seat-disabled{border-radius:12px;background:var(--png-disabled-bg);border:2px solid var(--png-disabled-border);}
.png-export-seat-empty{width:76px;height:76px;border-radius:12px;background:var(--png-surface2);border:2px solid var(--png-border);}
.png-export-seat-student{width:76px;height:76px;}
.png-export-desk-row{grid-column:1/-1;width:100%;height:76px;display:flex;align-items:center;justify-content:center;}
.png-export-desk-row span{width:170px;height:66px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--png-desk-bg);border:2px solid var(--png-desk-border);color:var(--png-desk-text);font-size:14px;font-weight:800;}

.png-export-pick-tray{width:680px;min-height:230px;}
.png-export-pick-result{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;min-height:124px;padding:14px 6px 20px;}
.png-export-pick-student{width:82px;height:82px;}

.png-export-group-tray{min-width:0;}
.png-export-group-grid{display:grid;grid-template-columns:repeat(var(--png-group-columns),var(--png-group-card-width));align-items:start;gap:14px;}
.png-export-group-card{min-width:0;padding:14px;border:1px solid var(--png-group-line);border-left:4px solid var(--png-group-color);border-radius:14px;background:var(--png-group-soft);}
.png-export-group-card>header{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:11px;color:var(--png-group-color);}
.png-export-group-card>header strong{font-size:15px;font-weight:800;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.png-export-group-card>header span{font-size:10px;font-weight:700;color:var(--png-text-sub);white-space:nowrap;}
.png-export-group-members{display:grid;grid-template-columns:repeat(auto-fit,minmax(98px,1fr));gap:8px;}
.png-export-group-student{width:100%;height:48px;border-radius:10px;}
.png-export-group-student .png-export-student-name{font-size:12px;}
.png-export-group-student .png-export-student-no{right:5px;bottom:4px;font-size:8px;}
#group-drag-ghost{position:fixed;top:0;left:0;width:64px;height:64px;pointer-events:none;z-index:9999;will-change:transform;}
#group-drag-ghost .tool-student-card{
  transform:scale(1.13) rotate(-3deg)!important;
  box-shadow:0 20px 50px rgba(0,0,0,.22),0 0 0 3px rgba(55,114,255,.25)!important;
  transition:none!important;opacity:1!important;cursor:grabbing!important;
}
@media(max-width:620px){.tool-panel{height:360px;padding:18px;}}
.tool-menu{position:fixed;z-index:9000;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.25);display:flex;flex-direction:column;gap:2px;min-width:168px;}
.tool-menu-item{padding:9px 14px;font-size:13px;font-weight:600;color:var(--text);border-radius:8px;cursor:pointer;display:flex;align-items:center;gap:10px;}
.tool-menu-item:hover{background:var(--surface2);}
.tool-menu-item.active{background:var(--accent);color:#fff;}
.tool-beta{margin-left:auto;padding:2px 7px;border-radius:999px;background:var(--danger);color:#fff;font-size:9px;font-weight:800;letter-spacing:.04em;line-height:1.25;}
#mode-toggle{display:none;justify-content:center;gap:0;margin-top:12px;}
#class-name-bar{display:none;width:min(calc(100vw - 32px),656px);height:48px;align-items:center;gap:4px;padding:4px;border-radius:14px;background:var(--surface);box-shadow:0 0 0 1px rgba(0,0,0,.06),0 2px 8px rgba(0,0,0,.06);overflow:hidden;}
[data-theme="dark"] #class-name-bar{box-shadow:0 0 0 1px rgba(255,255,255,.09);}
@media(prefers-color-scheme:dark){[data-theme="system"] #class-name-bar{box-shadow:0 0 0 1px rgba(255,255,255,.09);}}
.class-slot-skeleton-rail{min-width:0;flex:1;display:flex;align-items:center;gap:4px;overflow:hidden;}
.class-slot-skeleton,.class-slot-skeleton-actions span{height:40px;border-radius:10px;background:linear-gradient(90deg,var(--surface2) 0%,var(--border) 48%,var(--surface2) 100%);background-size:220% 100%;animation:seatSkelShimmer 1.15s ease-in-out infinite;}
.class-slot-skeleton{width:148px;flex:0 0 148px;}
.class-slot-skeleton-actions{flex:0 0 auto;display:flex;align-items:center;gap:4px;padding-left:4px;border-left:1px solid var(--border);}
.class-slot-skeleton-actions span{width:40px;flex:0 0 40px;}
.class-slot-rail{min-width:0;flex:1;display:flex;align-items:center;gap:4px;overflow-x:auto;scroll-snap-type:x proximity;}
.class-slot,.class-slot-empty,.class-slot-icon{height:40px;border:0;border-radius:10px;background:var(--surface2);color:var(--text-sub);font-family:inherit;cursor:pointer;transition-property:background-color,color,box-shadow,scale;transition-duration:150ms;transition-timing-function:ease-out;}
.class-slot:active,.class-slot-empty:active,.class-slot-icon:active{scale:.96;}
.class-slot{min-width:112px;max-width:180px;padding:0 12px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;text-align:left;scroll-snap-align:start;}
.class-slot:hover,.class-slot-icon:hover,.class-slot-empty:hover{background:color-mix(in srgb,var(--surface2) 76%,var(--accent) 24%);color:var(--accent);}
.class-slot.active{background:var(--accent);color:#fff;box-shadow:0 4px 12px rgba(55,114,255,.24);cursor:default;}
.class-slot.active:active{scale:1;}
.class-slot-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:800;}
.class-slot-count{font-size:10px;font-weight:700;font-variant-numeric:tabular-nums;opacity:.75;white-space:nowrap;}
.class-slot-empty{min-width:148px;padding:0 14px;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:12px;font-weight:800;}
.class-slot-actions{flex:0 0 auto;display:flex;align-items:center;gap:4px;padding-left:4px;border-left:1px solid var(--border);}
.class-slot-icon{width:40px;min-width:40px;display:flex;align-items:center;justify-content:center;font-size:12px;}
@media(max-width:620px){
  #class-name-bar{width:calc(100vw - 20px);}
  .class-slot{min-width:104px;max-width:140px;padding:0 10px;}
  .class-slot-skeleton{width:128px;flex-basis:128px;}
}
.settings-mode-toggle{display:flex;justify-content:flex-start;gap:0;margin:0 0 12px;height:46px;}
.mode-seg{height:46px;padding:0 18px;font-size:13px;font-weight:800;border:1.5px solid var(--border);background:var(--surface2);color:var(--text-sub);cursor:pointer;font-family:inherit;display:flex;align-items:center;justify-content:center;gap:8px;transition:background-color .15s, border-color .15s, color .15s, transform .15s;}
.mode-seg i{font-size:14px;}
.mode-seg:first-child{border-radius:10px 0 0 10px;}
.mode-seg:last-child{border-radius:0 10px 10px 0;border-left:none;}
.mode-seg.active{background:var(--accent);color:#fff;border-color:var(--accent);}
#block-overlay,#ban-overlay{position:fixed;inset:0;z-index:99999;background:var(--bg);color:var(--text);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;font-family:var(--app-font);padding:24px;box-sizing:border-box;}
.bl-icon{font-size:40px;color:var(--danger);}
.bl-title{font-size:17px;font-weight:700;}
.bl-status-code{font-size:.82em;font-weight:400;color:var(--text-sub);white-space:nowrap;}
.bl-sub{font-size:13px;color:var(--text-sub);text-align:center;line-height:1.6;text-wrap:pretty;}
.bl-ip{font-size:11px;color:var(--text-sub);opacity:.6;font-family:monospace;margin-top:-4px;}
.bl-logout-btn{min-height:44px;margin-top:8px;padding:10px 22px;font-size:14px;font-weight:600;color:var(--danger);background:transparent;border:1px solid var(--danger);border-radius:10px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;font-family:var(--app-font);transition:background-color .15s,color .15s,scale .15s;}
.bl-logout-btn:active{scale:.96;}
.bl-logout-btn:hover{background:var(--danger);color:#fff;}


.rainbow-seat {
  background: color-mix(in srgb, var(--surface) 82%, #9bc5f4 18%) !important;
  border: 2px solid #9bc5f4 !important;
  animation: rainbow-border-anim 4s ease-in-out infinite;
}
@keyframes rainbow-border-anim {
  0%,100% { border-color: #9bc5f4; }
  50%      { border-color: #b8daf8; }
}
.seat.drag-self .rainbow-seat { animation: none !important; }

.rainbow-seat .name-char {
  color: var(--text) !important;
  background: none !important;
  -webkit-background-clip: unset !important;
  background-clip: unset !important;
  font-weight: 600 !important;
}

/* 사용자 인터페이스 글꼴 크기 */
#dynamic-island [hidden]{display:none!important;}
.seat-inner,.tool-student-card{font-size:calc(13px + var(--font-adjust));}
.desk,.desk-box,.group-card-title,.modal-btn,.ice-input{font-size:calc(14px + var(--font-adjust));}
.tool-title{font-size:calc(16px + var(--font-adjust));}
.modal-box h2{font-size:calc(18px + var(--font-adjust));}
.tool-form,.tool-field,.seg2-btn,.mode-seg,.select-trigger,.option-item,.custom-toggle,.font-size-setting,.language-setting,.tool-menu-item,.profile-name{font-size:calc(13px + var(--font-adjust));}
.section-label,.profile-count,.class-slot-count,.pick-history-label,.group-count{font-size:calc(11px + var(--font-adjust));}
.class-slot-name,.class-slot-empty,.class-slot-icon,.history-date,.history-preview{font-size:calc(12px + var(--font-adjust));}
.tool-field .ice-input{font-size:calc(15px + var(--font-adjust));}
@media(max-width:700px){.seat-inner{font-size:calc(11px + var(--font-adjust));}}