/* 홀로그램 팽이 실험실 — 밤하늘 · 네온 · 홀로그램 빛 */
:root{
  --bg:#07051A; --bg2:#120B33;
  --ink:#F3F0FF; --ink2:#B9B2DA; --ink3:#8A83B3;
  --glass:rgba(255,255,255,.06); --glass2:rgba(255,255,255,.1); --line:rgba(170,150,255,.22);
  --cyan:#3EE6FF; --pink:#FF5FD2; --violet:#9B7BFF; --amber:#FFC24B; --lime:#7CFFB2; --sky:#5FA8FF;
  --holo:linear-gradient(100deg,#FF5FD2 0%,#FFC24B 25%,#7CFFB2 50%,#3EE6FF 72%,#9B7BFF 100%);
  --r:22px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
html{background:radial-gradient(1200px 700px at 50% 0,#2A1868 0%,transparent 60%),radial-gradient(1000px 800px at 100% 100%,#0E3B5C 0%,transparent 60%),var(--bg)}
body{font-family:'Pretendard Variable',Pretendard,'Apple SD Gothic Neo',system-ui,sans-serif;color:var(--ink);
  -webkit-tap-highlight-color:transparent;overscroll-behavior:none}
/* 반짝이는 별 — 두 겹이 서로 다른 박자로 깜빡인다 */
body::before,body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:radial-gradient(1.4px 1.4px at 12% 18%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 33% 72%,#cfe 50%,transparent 51%),
    radial-gradient(1.6px 1.6px at 58% 28%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 81% 61%,#fde 50%,transparent 51%),
    radial-gradient(1.2px 1.2px at 91% 14%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 22% 44%,#dff 50%,transparent 51%),
    radial-gradient(1.3px 1.3px at 70% 88%,#fff 50%,transparent 51%),radial-gradient(1px 1px at 46% 9%,#eef 50%,transparent 51%);
  background-size:520px 520px;animation:twinkle 4.5s ease-in-out infinite alternate}
body::after{background-size:330px 330px;background-position:140px 90px;opacity:.6;animation-duration:3.2s;animation-delay:-1.6s}
@keyframes twinkle{from{opacity:.25}to{opacity:.9}}
@media (prefers-reduced-motion:reduce){body::before,body::after{animation:none;opacity:.6}}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none;touch-action:manipulation}
svg.ic{width:1em;height:1em;flex:none}
.bar,main{position:relative;z-index:1}
.bar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:12px;padding:12px 20px;padding-top:max(12px,env(safe-area-inset-top));
  background:rgba(7,5,26,.72);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.bar h1{font-family:'Black Han Sans','Pretendard Variable',sans-serif;font-weight:400;font-size:24px;letter-spacing:.01em;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar .brand{font-size:12px;font-weight:800;letter-spacing:.22em;background:var(--holo);-webkit-background-clip:text;background-clip:text;color:transparent}
.back{display:flex;align-items:center;gap:6px;font-size:16px;font-weight:700;color:var(--ink);background:var(--glass2);border:1px solid var(--line);border-radius:999px;padding:8px 14px}
.back[hidden]{display:none}
.back svg{font-size:19px}
main{padding:20px;max-width:1280px;margin:0 auto}

/* ── 홈 ── */
body.home .bar{background:transparent;border-color:transparent;backdrop-filter:none;-webkit-backdrop-filter:none}
body.home .bar h1{visibility:hidden}
.hero{display:flex;flex-direction:column;align-items:center;text-align:center;margin:0 0 10px}
.orb{position:relative;width:min(280px,62vw);aspect-ratio:1}
.orb::before{content:"";position:absolute;inset:-14%;border-radius:50%;
  background:conic-gradient(from 0deg,#FF5FD2,#FFC24B,#7CFFB2,#3EE6FF,#9B7BFF,#FF5FD2);filter:blur(42px);opacity:.55;animation:spinglow 9s linear infinite}
.orb::after{content:"";position:absolute;inset:-6%;border-radius:50%;border:1.5px dashed rgba(190,170,255,.45);animation:spinglow 30s linear infinite reverse}
@keyframes spinglow{to{transform:rotate(360deg)}}
.orb canvas{position:relative;width:100%;height:100%;display:block}
.hero .kicker{margin-top:22px;font-size:14px;font-weight:800;letter-spacing:.32em;color:var(--cyan);text-shadow:0 0 12px rgba(62,230,255,.6)}
.hero h2{margin-top:8px;font-family:'Black Han Sans','Pretendard Variable',sans-serif;font-weight:400;font-size:clamp(40px,7vw,72px);line-height:1.08;letter-spacing:.01em;
  background:var(--holo);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shimmer 6s ease-in-out infinite alternate;
  filter:drop-shadow(0 4px 24px rgba(155,123,255,.45))}
@keyframes shimmer{to{background-position:100% 0}}
.hero p{margin-top:14px;font-size:18px;color:var(--ink2);line-height:1.6}
.start{margin-top:22px}
/* 스테이지 지도 */
.map{position:relative;margin:6px auto 0;max-width:1240px}
@media (max-width:759px){.map{margin-top:56px}}
.route{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.route path{fill:none;stroke-linecap:round}
.route .base{stroke:rgba(190,170,255,.35);stroke-width:3;stroke-dasharray:2 12}
.route .lit{stroke:#fff;stroke-width:5;filter:drop-shadow(0 0 6px #3EE6FF) drop-shadow(0 0 14px #FF5FD2)}
.planet{--c:#3EE6FF;position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:2px;text-align:center;transition:transform .2s}
.planet canvas{width:100%;aspect-ratio:1;display:block;transition:filter .2s}
.planet:hover{transform:translate(-50%,-50%) scale(1.06)}
.planet:hover canvas{filter:brightness(1.15)}
.planet:active{transform:translate(-50%,-50%) scale(.97)}
.planet .pl-no{margin-top:-10px;font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--c);text-shadow:0 0 10px var(--c)}
.planet b{font-family:'Black Han Sans','Pretendard Variable',sans-serif;font-weight:400;font-size:21px;letter-spacing:.01em;white-space:nowrap;text-shadow:0 2px 10px rgba(0,0,0,.8)}
.planet .stars{font-size:22px;line-height:1;color:rgba(255,255,255,.3)}
.planet.clear .stars{color:#FFD45E;text-shadow:0 0 12px rgba(255,212,94,.9)}
.here{position:absolute;transform:translate(-50%,-100%);padding:6px 12px;border-radius:999px;background:#fff;color:#1a0f3d;font-weight:900;font-size:15px;white-space:nowrap;
  box-shadow:0 0 18px rgba(255,255,255,.7);animation:bob 1.1s ease-in-out infinite alternate;pointer-events:none;z-index:2}
.here::after{content:"";position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);border:8px solid transparent;border-top-color:#fff;border-bottom:0}
@keyframes bob{to{transform:translate(-50%,calc(-100% - 8px))}}
@media (prefers-reduced-motion:reduce){.here{animation:none}}
/* 행성 창 */
.dlg{--c:#3EE6FF;position:fixed;inset:0;z-index:60;display:grid;place-items:center;padding:20px;background:rgba(4,2,16,.72);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:fadein .2s}
@keyframes fadein{from{opacity:0}}
.dlg-card{position:relative;width:min(440px,100%);padding:20px 26px 24px;border-radius:28px;text-align:center;
  background:linear-gradient(170deg,#1C1250,#0B0726 70%);border:1.5px solid color-mix(in srgb,var(--c) 60%,transparent);
  box-shadow:0 0 0 6px rgba(255,255,255,.03),0 0 60px color-mix(in srgb,var(--c) 40%,transparent),0 30px 60px rgba(0,0,0,.6);animation:pop .28s cubic-bezier(.2,1.4,.4,1)}
@keyframes pop{from{transform:scale(.85);opacity:0}}
.dlg-pl{width:190px;height:190px;margin:-80px auto 0;display:block}
.dlg-no{font-size:13px;font-weight:800;letter-spacing:.24em;color:var(--c);text-shadow:0 0 10px var(--c)}
.dlg-card h3{margin-top:4px;font-family:'Black Han Sans','Pretendard Variable',sans-serif;font-weight:400;font-size:38px}
.dlg-story{margin-top:10px;font-size:17px;line-height:1.6;color:var(--ink2)}
.dlg-mission{margin-top:16px;padding:12px 14px;border-radius:16px;background:rgba(255,255,255,.06);border:1px dashed color-mix(in srgb,var(--c) 60%,transparent);text-align:left}
.dlg-mission span{display:block;font-size:13px;font-weight:800;color:#FFD45E;letter-spacing:.06em}
.dlg-mission b{font-size:17px;line-height:1.5}
.dlg-btns{margin-top:18px;display:grid;grid-template-columns:1fr 1.6fr;gap:10px}
.foot{margin:28px 0 10px;text-align:center;font-size:13px;color:var(--ink3);letter-spacing:.06em}

/* ── 실험 화면 ── */
.lab{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:20px;align-items:start}
.stage{position:relative;border-radius:var(--r);overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none;
  background:radial-gradient(70% 70% at 50% 50%,rgba(120,90,255,.22),transparent 70%),rgba(10,7,32,.6);border:1px solid var(--line);
  box-shadow:0 0 40px rgba(155,123,255,.12) inset}
.stage canvas{display:block;width:100%;height:100%}
.stage .hud{position:absolute;left:14px;top:12px;display:flex;gap:8px;flex-wrap:wrap;pointer-events:none}
.pill{background:rgba(7,5,26,.7);border:1px solid var(--line);border-radius:999px;padding:6px 12px;font-size:15px;font-weight:700;color:var(--ink)}
.pill.t{color:var(--cyan)} .pill.o{color:var(--amber)}
.stage .hint{position:absolute;left:50%;bottom:10px;transform:translateX(-50%);max-width:calc(100% - 24px);text-align:center;font-size:15px;color:var(--ink2);pointer-events:none;
  background:rgba(7,5,26,.7);border-radius:999px;padding:4px 12px}
.side{display:flex;flex-direction:column;gap:14px}
.box{background:var(--glass);border:1px solid var(--line);border-radius:var(--r);padding:16px;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.box h3{font-size:16px;font-weight:800;margin-bottom:10px;display:flex;align-items:center;gap:8px;color:var(--ink)}
.box h3 svg{color:var(--cyan)}
.row{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;min-width:48px;padding:8px 14px;border-radius:14px;
  background:rgba(255,255,255,.05);border:1.5px solid var(--line);font-size:16px;font-weight:700;color:var(--ink)}
.chip.on{border-color:var(--cyan);background:rgba(62,230,255,.12);color:#fff;box-shadow:0 0 14px rgba(62,230,255,.35)}
.chip canvas{width:30px;height:30px}
.sw{width:48px;height:48px;border-radius:14px;border:2px solid rgba(255,255,255,.25)}
.sw.on{border-color:#fff;box-shadow:0 0 0 3px var(--cyan),0 0 16px rgba(62,230,255,.6)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:54px;padding:10px 22px;border-radius:16px;font-size:18px;font-weight:800;color:#fff;
  background:linear-gradient(100deg,#7B5CFF,#FF5FD2);box-shadow:0 6px 22px rgba(255,95,210,.35),0 0 0 1px rgba(255,255,255,.15) inset}
.btn.o{background:linear-gradient(100deg,#FF8A3D,#FFC24B);color:#2A1500;box-shadow:0 6px 22px rgba(255,194,75,.35)}
.btn.g{background:rgba(255,255,255,.06);color:var(--ink);box-shadow:none;border:1.5px solid var(--line)}
.btn.wide{width:100%}
.btn:disabled{opacity:.45}
.start.btn{min-height:60px;padding:12px 34px;font-size:20px;border-radius:999px}
input[type=range]{width:100%;height:40px;accent-color:var(--pink)}
.lbl{display:flex;justify-content:space-between;font-size:14px;font-weight:700;color:var(--ink3);margin-top:4px}
.why{background:linear-gradient(160deg,rgba(155,123,255,.16),rgba(255,95,210,.06));border-color:rgba(155,123,255,.35)}
.why h3 svg{color:var(--pink)}
.why p{font-size:16px;line-height:1.7;color:var(--ink2)}
.why p b{color:#fff;background:linear-gradient(transparent 62%,rgba(255,95,210,.35) 62%)}
.why details summary{list-style:none;cursor:pointer;font-size:15px;font-weight:800;color:var(--amber);padding:8px 0 0}
.why details summary::-webkit-details-marker{display:none}
.why details p{margin-top:6px}
.meter{height:14px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;border:1px solid var(--line)}
.meter i{display:block;width:100%;height:100%;background:linear-gradient(90deg,#3EE6FF,#7CFFB2);transform-origin:left;transition:transform .2s}
.meter.bad i{background:linear-gradient(90deg,#FF8A3D,#FF5FD2)}
.big{font-family:'Black Han Sans','Pretendard Variable',sans-serif;font-weight:400;font-size:56px;letter-spacing:.01em;font-variant-numeric:tabular-nums;
  color:#fff;text-shadow:0 0 18px rgba(62,230,255,.7),0 0 36px rgba(155,123,255,.5)}
.mix{display:flex;align-items:center;gap:14px}
.mix .sw{width:72px;height:72px;border-radius:18px}
.mix p{font-size:16px;line-height:1.5;color:var(--ink2)}
ol.rank{list-style:none;display:flex;flex-direction:column;gap:6px}
ol.rank li{display:flex;justify-content:space-between;font-size:16px;padding:8px 12px;border-radius:12px;background:rgba(255,255,255,.05)}
ol.rank li:first-child{background:linear-gradient(90deg,rgba(255,194,75,.25),rgba(255,95,210,.12));font-weight:800;color:#fff}
.nick{width:100%;min-height:50px;border:1.5px solid var(--line);border-radius:14px;padding:8px 14px;font:inherit;font-size:18px;background:rgba(255,255,255,.06);color:var(--ink)}
.nick::placeholder{color:var(--ink3)}
.banner{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(10,7,32,.88);border:1px solid rgba(255,255,255,.2);border-radius:22px;padding:20px 30px;text-align:center;
  box-shadow:0 0 40px rgba(255,95,210,.4);font-family:'Black Han Sans','Pretendard Variable',sans-serif;font-weight:400;font-size:34px;pointer-events:none;color:#fff}
.banner small{display:block;font-family:'Pretendard Variable',sans-serif;font-size:16px;font-weight:700;color:var(--ink2);margin-top:4px}
.duel{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.duel .who{position:absolute;right:12px;top:12px;font-family:'Black Han Sans',sans-serif;font-size:22px;color:var(--cyan);text-shadow:0 0 10px rgba(62,230,255,.6)}
.duel .stage:nth-child(2) .who{color:var(--pink);text-shadow:0 0 10px rgba(255,95,210,.6)}

/* ── 홀로그램 모드 ── */
body.holo{background:#000}
body.holo::before,body.holo::after{display:none}
body.holo main{max-width:none;padding:0}
.holo-wrap{position:fixed;inset:0;background:#000;touch-action:none;z-index:5}
.holo-wrap canvas{width:100%;height:100%;display:block}
.holo-ui{position:absolute;left:50%;bottom:max(16px,env(safe-area-inset-bottom));transform:translateX(-50%);width:min(760px,calc(100% - 24px));
  background:rgba(25,20,45,.9);border:1px solid var(--line);color:#fff;border-radius:20px;padding:14px 16px;display:grid;grid-template-columns:repeat(3,1fr) auto;gap:12px;align-items:end;transition:opacity .25s}
.holo-ui.hide{opacity:0;pointer-events:none}
.holo-ui .btns{display:flex;flex-direction:column;gap:8px}
.holo-ui .btn{min-height:46px;font-size:16px;padding:8px 14px}
.holo-top{position:absolute;left:0;right:0;top:max(10px,env(safe-area-inset-top));display:flex;justify-content:space-between;padding:0 14px;transition:opacity .25s}
.holo-top.hide{opacity:0;pointer-events:none}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:rgba(25,20,45,.95);border:1px solid var(--line);color:#fff;padding:12px 20px;border-radius:14px;font-size:16px;font-weight:700;z-index:50}

@media (max-width:900px){
  .lab{grid-template-columns:1fr}
  .holo-ui{grid-template-columns:1fr 1fr}
  .holo-ui .btns{grid-column:1/-1;flex-direction:row}
  .holo-ui .btns .btn{flex:1}
}
@media (max-width:560px){
  main{padding:14px}
  .planet b{font-size:19px}
  .dlg-pl{width:160px;height:160px;margin-top:-70px}
  .dlg-card h3{font-size:32px}
  .bar h1{font-size:20px}
  .duel{grid-template-columns:1fr}
  .stage .hint{font-size:12.5px;bottom:6px}
}