:root{
  --bg:#f5f4f0; --surface:#fbfbf9; --panel:#ffffff; --panel-soft:#f7f6f2;
  --ink:#1c1c1a; --ink-hover:#3a3935; --ink-2:#55534d; --sub:#7a776f; --muted:#8a877f;
  --line:#e3e1db; --line-2:#dcdad3; --line-3:#efeee9; --hover:#efeee9; --soft:#f3f2ee; --track:#ebe9e3;
  --accent:#6b4cf6;
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace;
  --checker:repeating-conic-gradient(#e6e4de 0% 25%,#fbfbf9 0% 50%) 0 0/14px 14px;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit}
.mono-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.hint{font-size:12px;color:var(--muted);margin:0}
.app{min-height:100vh;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 28px;border-bottom:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:14px;min-width:0;flex-wrap:wrap}
.home{font-size:13px;color:var(--ink-2);text-decoration:none}
.home:hover{color:var(--ink)}
.brand-title{font-size:17px;font-weight:700;letter-spacing:-.01em}
.actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.btn{height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--hover)}
.btn--solid{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.btn--accent{background:var(--accent);color:#fff;border:none;font-weight:500}
.btn--accent:hover{filter:brightness(1.08)}
.btn--light{border-color:rgba(255,255,255,.22);color:#efeee9}
.btn--light:hover{background:rgba(255,255,255,.08)}
.text-input{height:40px;padding:0 12px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;font:inherit;font-size:14px;color:var(--ink)}
.link{padding:4px 0;background:transparent;color:var(--accent);border:none;font-size:13px;font-weight:500;cursor:pointer}
.link:hover{text-decoration:underline;text-underline-offset:3px}

/* 탭 */
.tabs{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.tab{height:32px;padding:0 16px;background:transparent;border:none;border-radius:999px;color:var(--sub);font-size:13px;cursor:pointer}
.tab[aria-selected="true"]{background:var(--ink);color:#fff;font-weight:500}

/* 레이아웃 */
.layout{flex:1;display:flex;flex-wrap:wrap;align-items:flex-start;min-height:0}
.stage{flex:999 1 420px;min-width:0;display:flex;flex-direction:column;gap:18px;padding:32px 28px 48px}
.panel{flex:1 1 390px;min-width:300px;max-width:100%;align-self:stretch;border-left:1px solid var(--line);padding:24px 24px 40px;display:flex;flex-direction:column;gap:26px;background:var(--panel)}
.group{display:flex;flex-direction:column;gap:12px}
.group--line{border-top:1px solid var(--line-3);padding-top:22px}
.group-head{display:flex;justify-content:space-between;align-items:center;gap:8px}

/* 세그먼트 */
.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px}
.seg-btn{flex:1;height:32px;background:transparent;color:var(--sub);border:none;border-radius:999px;font-size:13px;cursor:pointer;white-space:nowrap}
.seg-btn.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:500}

/* 미리보기 */
.g-preview{position:relative;width:100%;aspect-ratio:16/10;max-height:62vh;border-radius:20px;background:var(--checker);box-shadow:0 1px 2px rgba(0,0,0,.06),0 24px 60px -20px rgba(40,36,28,.25);overflow:hidden}
.g-preview::after{content:"";position:absolute;inset:0;background:var(--g);border-radius:inherit}
.code-card{display:flex;flex-direction:column;gap:12px;padding:16px 16px 14px;background:#1c1c1a;border-radius:16px;color:#efeee9}
.code{margin:0;font-family:var(--mono);font-size:13px;line-height:1.7;white-space:pre-wrap;word-break:break-all;color:#efeee9;min-height:44px}
.code .k{color:#b9a6ff}
.code .f{color:#ffc58a}
.code .n{color:#8fe0b6}
.code .c{color:#7a776f}
.code-actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.presets-wrap{display:flex;flex-direction:column;gap:10px}
.presets{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:8px}
.preset{height:64px;border:none;border-radius:12px;cursor:pointer;position:relative;box-shadow:inset 0 0 0 1px rgba(0,0,0,.06);transition:transform .15s;display:flex;align-items:flex-end;padding:6px;font-size:11px;font-weight:500;color:var(--ink)}
.preset b{font-weight:500;padding:2px 7px;border-radius:999px;background:rgba(255,255,255,.88)}
.preset:hover{transform:translateY(-2px)}
.presets--shadow .preset{background:var(--soft);color:var(--ink-2);text-shadow:none;align-items:center;justify-content:center;padding:0}
.presets--shadow .preset i{position:absolute;inset:14px 22px 24px;border-radius:8px;background:#fff}
.presets--shadow .preset span{position:absolute;bottom:4px;left:0;right:0;text-align:center;font-size:11px}

/* 각도 */
.num-wrap{display:flex;align-items:center;gap:6px}
.num-input{width:72px;height:32px;padding:0 8px;background:var(--surface);color:var(--ink);border:1px solid var(--line-2);border-radius:8px;font-family:var(--mono);font-size:13px;text-align:right}
.num-input:focus,.text-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(107,76,246,.14)}
.unit{font-family:var(--mono);font-size:11px;color:var(--muted)}
.angle-row{display:flex;align-items:center;gap:14px}
.dial{position:relative;flex:0 0 auto;width:76px;height:76px;border-radius:999px;background:var(--soft);box-shadow:inset 0 0 0 1px var(--line-2);cursor:grab;touch-action:none}
.dial:active{cursor:grabbing}
.dial:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.dial-hand{position:absolute;left:50%;top:50%;width:2px;height:32px;margin-left:-1px;background:var(--accent);transform-origin:50% 0;border-radius:2px}
.dial-hand::after{content:"";position:absolute;bottom:-5px;left:50%;width:10px;height:10px;margin-left:-5px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 3px #fff}
.dial-dot{position:absolute;left:50%;top:50%;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:999px;background:var(--ink)}
.angle-quick{flex:1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px}
.aq{height:30px;padding:0;white-space:nowrap;border:1px solid var(--line-2);border-radius:8px;background:#fff;font-family:var(--mono);font-size:11px;cursor:pointer;color:var(--ink-2)}
.aq:hover{border-color:var(--ink)}
.aq.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
input[type=range]{width:100%;accent-color:var(--accent);margin:0}

/* 위치 그리드 */
.pos-grid{display:grid;grid-template-columns:repeat(3,34px);gap:4px;padding:6px;background:var(--soft);border-radius:12px;width:max-content}
.pos{width:34px;height:34px;border:none;border-radius:8px;background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center}
.pos::after{content:"";width:8px;height:8px;border-radius:999px;background:var(--line-2)}
.pos:hover::after{background:var(--sub)}
.pos.is-active{background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.pos.is-active::after{background:var(--accent);width:10px;height:10px}

/* 컬러 스톱 막대 */
.bar-wrap{position:relative;padding:0 11px 30px}
.bar{position:relative;height:36px;border-radius:10px;background:var(--checker);cursor:copy;box-shadow:inset 0 0 0 1px rgba(0,0,0,.08);overflow:hidden}
.bar-fill{position:absolute;inset:0}
.handles{position:absolute;left:11px;right:11px;top:0;height:100%;pointer-events:none}
.handle{position:absolute;top:-3px;width:22px;height:64px;margin-left:-11px;padding:0;background:none;border:none;cursor:grab;pointer-events:auto;touch-action:none}
.handle::before{content:"";position:absolute;left:10px;top:0;width:2px;height:44px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.28)}
.handle i{position:absolute;left:0;bottom:0;width:22px;height:22px;border-radius:999px;border:3px solid #fff;background:var(--checker);box-shadow:0 0 0 1px rgba(0,0,0,.25),0 2px 6px rgba(0,0,0,.2);overflow:hidden}
.handle i::after{content:"";position:absolute;inset:0;background:var(--hc)}
.handle.is-sel{z-index:2}
.handle.is-sel i{box-shadow:0 0 0 2px var(--accent),0 2px 8px rgba(0,0,0,.25)}
.handle.is-sel::before{background:var(--accent);box-shadow:none}
.handle:active{cursor:grabbing}
.handle:focus-visible{outline:none}
.handle:focus-visible i{box-shadow:0 0 0 3px var(--accent)}

.stops{display:flex;flex-direction:column;gap:6px}
.stop{display:grid;grid-template-columns:34px minmax(0,1fr) 56px 56px 28px;gap:5px;align-items:center;padding:6px;border-radius:12px;border:1px solid transparent;background:var(--panel-soft)}
.stop.is-sel{border-color:var(--accent);background:#fff}
.sw-btn{position:relative;width:34px;height:34px;border-radius:9px;overflow:hidden;background:var(--checker);box-shadow:inset 0 0 0 1px rgba(0,0,0,.1);cursor:pointer}
.sw-btn i{position:absolute;inset:0}
.sw-btn input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;border:0;padding:0}
.mini{position:relative;display:block;min-width:0}
.mini input{width:100%;height:34px;padding:0 6px 0 8px;background:#fff;color:var(--ink);border:1px solid var(--line-2);border-radius:8px;font-family:var(--mono);font-size:12px}
.mini input:focus{outline:none;border-color:var(--accent)}
.mini input.is-bad{border-color:#b3261e}
.mini .u{position:absolute;right:7px;top:50%;transform:translateY(-50%);font-family:var(--mono);font-size:10px;color:var(--muted);pointer-events:none}
.mini--u input{padding-right:22px;text-align:right}
.mini input::-webkit-outer-spin-button,.mini input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.mini input[type=number]{-moz-appearance:textfield;appearance:textfield}
.del{width:28px;height:32px;border:none;background:transparent;border-radius:8px;color:var(--muted);cursor:pointer;font-size:15px}
.del:hover:not(:disabled){background:#fbe9e7;color:#b3261e}
.del:disabled{opacity:.3;cursor:default}

.check{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer}
.check input{width:16px;height:16px;margin:0;accent-color:var(--accent)}

/* ---------- 섀도우 ---------- */
.s-stage{width:100%;min-height:420px;border-radius:20px;display:flex;align-items:center;justify-content:center;padding:56px 24px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.05);transition:background-color .2s}
.s-card{width:min(300px,100%);aspect-ratio:3/2;display:flex;flex-direction:column;justify-content:flex-end;gap:4px;padding:20px;transition:border-radius .15s}
.s-card-title{font-size:17px;font-weight:700}
.layer-tabs{display:flex;flex-wrap:wrap;gap:6px}
.ltab{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 12px 0 8px;border:1px solid var(--line-2);border-radius:999px;background:#fff;font-size:12px;cursor:pointer}
.ltab i{width:18px;height:18px;border-radius:6px;background:#fff}
.ltab[aria-selected="true"]{border-color:var(--ink);background:var(--ink);color:#fff}
.ltab.is-off{opacity:.5}
.layer-edit{gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--ink-2);gap:8px}
.field-head label{color:var(--ink-2)}
.num{font-family:var(--mono);font-size:12px;color:var(--muted)}
/* 슬라이더 직접 입력칸 · 단계 버튼 */
.field-head .tb-num{height:28px;width:52px;padding:0 6px;font-size:12px;color:var(--ink);border-color:var(--line-2);background:#fff;border-radius:8px}
.field-head .tb-num-wrap{font-family:var(--mono);font-size:11px;color:var(--muted);gap:4px}
.field .tb-presets{margin-top:2px;gap:4px}
.field .tb-presets button{height:26px;min-width:0;padding:0 9px;font-size:11.5px;border-color:var(--line-2)}
@media (pointer:coarse){.field-head .tb-num{height:32px;width:56px;font-size:16px}.field .tb-presets button{height:30px}}
.slider-row{display:grid;grid-template-columns:minmax(0,1fr) 78px;gap:10px;align-items:center}
.color-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.color-chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2);cursor:pointer}
.chip-sw{position:relative;width:34px;height:34px;border-radius:10px;overflow:hidden;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12);background:var(--checker)}
.chip-sw i{position:absolute;inset:0}
.chip-sw input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer;border:0;padding:0}
.layer-foot{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.btn-del{height:32px;padding:0 12px;border:1px solid var(--line-2);border-radius:999px;background:#fff;font-size:12px;color:#b3261e;cursor:pointer}
.btn-del:hover:not(:disabled){background:#fbe9e7;border-color:#f3c3bd}
.btn-del:disabled{opacity:.35;cursor:default}

/* 토스트 */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:50;max-width:calc(100% - 32px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

@media (max-width:640px){
  .topbar{padding:14px 16px}
  .actions,.tabs{width:100%}
  .tab{flex:1}
  .stage{padding:20px 16px 28px}
  .g-preview{aspect-ratio:4/3;border-radius:16px}
  .panel{border-left:none;border-top:1px solid var(--line);padding:22px 16px 40px;min-width:0}
  .s-stage{min-height:300px;padding:40px 16px}
  .stop{grid-template-columns:34px minmax(0,1fr) 54px 54px 28px;gap:4px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important}
}

/* 다크 모드 (인쇄는 라이트 그대로) — 그라디언트·섀도우 미리보기, 프리셋 견본, 투명 체크무늬는 그대로 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#141318; --surface:#1a1920; --panel:#1f1e26; --panel-soft:#24232c;
    --ink:#ecebf0; --ink-hover:#ffffff; --ink-2:#c9c7d1; --sub:#a09eab; --muted:#8a8895;
    --line:#2e2d36; --line-2:#393843; --line-3:#26252d; --hover:#2a2932; --soft:#26252d; --track:#34333d;
    --accent:#9a84ff;
  }
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .btn--accent,:root[data-theme="dark"] .tab[aria-selected="true"],
  :root[data-theme="dark"] .aq.is-active,:root[data-theme="dark"] .ltab[aria-selected="true"],:root[data-theme="dark"] .toast,
  :root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] .seg-btn.is-active,:root[data-theme="dark"] .pos.is-active{background:var(--line-2);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .num-input:focus,:root[data-theme="dark"] .text-input:focus{box-shadow:0 0 0 3px rgba(154,132,255,.2)}
  :root[data-theme="dark"] .g-preview{box-shadow:0 0 0 1px var(--line),0 24px 60px -20px rgba(0,0,0,.6)}
  :root[data-theme="dark"] .code-card{background:#111015;box-shadow:inset 0 0 0 1px var(--line-2)}
  :root[data-theme="dark"] .preset b,:root[data-theme="dark"] .s-stage{color:#1c1c1a}
  :root[data-theme="dark"] .s-stage .mono-label{color:#8a877f}
  :root[data-theme="dark"] .presets--shadow .preset{background:#f3f2ee;color:#55534d}
  :root[data-theme="dark"] .dial-hand::after{box-shadow:0 0 0 3px var(--soft)}
  :root[data-theme="dark"] .aq:not(.is-active),:root[data-theme="dark"] .ltab:not([aria-selected="true"]),:root[data-theme="dark"] .btn-del{background:var(--panel)}
  :root[data-theme="dark"] .stop.is-sel{background:var(--panel)}
  :root[data-theme="dark"] .mini input,:root[data-theme="dark"] .field-head .tb-num{background:var(--surface)}
  :root[data-theme="dark"] .mini input.is-bad{border-color:#ff8a80}
  :root[data-theme="dark"] .del:hover:not(:disabled){background:rgba(255,138,128,.14);color:#ff8a80}
  :root[data-theme="dark"] .btn-del{color:#ff8a80}
  :root[data-theme="dark"] .btn-del:hover:not(:disabled){background:rgba(255,138,128,.14);border-color:rgba(255,138,128,.4)}
  :root[data-theme="dark"] .bar,:root[data-theme="dark"] .sw-btn,:root[data-theme="dark"] .chip-sw{box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
}