: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:#ff5436; --accent-2:#ffd23f;
  --crt:#161512; --crt-2:#24221d;
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace; --pix:"Silkscreen","JetBrains Mono",monospace;
}
*{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)}
.app{min-height:calc(100vh - 48px);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}
.btn{height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer}
.btn:hover{background:var(--hover)}
.btn--solid{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.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)}
@media (max-width:640px){ .topbar{padding:14px 16px} }

/* ---------- 공통 ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.mono{font-family:var(--mono)}
.note{margin:0;font-size:12px;line-height:1.6;color:var(--muted)}
.num{font-family:var(--mono);font-size:13px;color:var(--ink-2)}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.btn--file{display:inline-flex;align-items:center;position:relative}
.btn--file:focus-within{outline:2px solid var(--accent);outline-offset:2px}
.btn--wide{width:100%;height:44px;font-weight:500;border-color:var(--ink)}
input[type=range]{width:100%;accent-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.layout{flex:1;display:flex;flex-wrap:wrap;align-items:flex-start}

/* ---------- 스테이지 (레트로 모니터) ---------- */
.stage{flex:999 1 420px;min-width:0;padding:32px 28px 40px;display:flex;flex-direction:column;gap:18px}
.screen{background:var(--crt);border-radius:18px;padding:14px;box-shadow:0 0 0 1px #000,0 24px 50px rgba(30,26,18,.22),inset 0 0 0 2px var(--crt-2)}
.screen-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:2px 6px 12px}
.pix-label{font-family:var(--pix);font-size:12px;letter-spacing:.06em;color:var(--accent-2);white-space:nowrap}
.pix-label::before{content:"";display:inline-block;width:8px;height:8px;margin-right:8px;background:var(--accent);vertical-align:1px;animation:blink 1.4s steps(1) infinite}
.pix-label--dim{color:#8c8778;overflow:hidden;text-overflow:ellipsis}
.pix-label--dim::before{display:none}
.view{position:relative;display:flex;align-items:center;justify-content:center;min-height:360px;height:min(62vh,600px);border-radius:10px;overflow:hidden;background:
  repeating-conic-gradient(#1f1e1a 0 25%,#262520 0 50%) 0 0/16px 16px}
.view canvas{display:block;max-width:100%;max-height:100%;image-rendering:pixelated;image-rendering:crisp-edges;animation:pop .35s ease}
.ascii{margin:0;padding:12px;max-width:100%;max-height:100%;overflow:hidden;font-family:var(--mono);line-height:1;letter-spacing:0;white-space:pre;color:#1c1c1a;background:#f6f3ea;border-radius:4px;animation:pop .35s ease}
.ascii.is-dark{background:#0d0c0a;color:#e9e4d4}
.drop-hint{position:absolute;inset:10px;display:flex;align-items:center;justify-content:center;border:2px dashed var(--accent-2);border-radius:10px;background:rgba(22,21,18,.82);color:var(--accent-2);font-family:var(--pix);font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s}
.stage.is-over .drop-hint{opacity:1}

.source-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.samples{display:flex;gap:8px;flex-wrap:wrap}
.sample{display:flex;align-items:center;gap:8px;height:40px;padding:0 12px 0 4px;background:var(--panel);border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer}
.sample canvas{width:32px;height:32px;border-radius:50%;display:block}
.sample.is-active{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.privacy{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-2)}
.privacy::before{content:"";width:8px;height:8px;background:#36b37e;border-radius:2px;flex:0 0 auto}

/* ---------- 패널 ---------- */
.panel{flex:1 1 320px;min-width:280px;align-self:stretch;border-left:1px solid var(--line);background:var(--panel);padding:24px 24px 40px;display:flex;flex-direction:column;gap:22px}
.pane{display:flex;flex-direction:column;gap:22px}
.group{display:flex;flex-direction:column;gap:12px}
.group-sub{display:flex;flex-direction:column;gap:6px}
.group .tb-presets{margin-top:-4px}
.group-sub .tb-presets{margin-top:2px}
.group--line{border-top:1px solid var(--line-3);padding-top:20px}
.field{display:flex;flex-direction:column;gap:6px}
.field-label{font-size:12px;color:var(--ink-2)}
.field-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--ink-2)}

.tabs{display:grid;grid-template-columns:1fr 1fr;gap:0;border:2px solid var(--ink);border-radius:12px;overflow:hidden}
.tab{height:48px;border:none;background:#fff;font-size:15px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:background .15s,color .15s}
.tab + .tab{border-left:2px solid var(--ink)}
.tab-ico{font-family:var(--mono);font-size:16px}
.tab.is-active{background:var(--ink);color:#fff}
.tab.is-active .tab-ico{color:var(--accent-2)}

.palettes,.charsets{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.pal{display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:8px 10px;background:#fff;border:1px solid var(--line-2);border-radius:10px;font-size:12px;text-align:left;cursor:pointer;transition:border-color .15s,transform .15s}
.pal:hover{border-color:var(--ink-2)}
.pal.is-active{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.pal-dots{display:flex;height:10px;width:100%;border-radius:2px;overflow:hidden}
.pal-dots i{flex:1}
.pal-name{font-weight:500}
.charset-sample{font-family:var(--mono);font-size:11px;color:var(--sub);white-space:pre;overflow:hidden;max-width:100%}
.pal-preview{display:flex;flex-wrap:wrap;gap:3px}
.pal-preview i{width:16px;height:16px;border-radius:3px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.1)}

.toggle{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;cursor:pointer}
.toggle small{font-size:12px;color:var(--muted)}
.toggle input{position:absolute;opacity:0;width:1px;height:1px}
.switch{flex:0 0 auto;position:relative;width:40px;height:24px;border-radius:999px;background:var(--track);transition:background .2s}
.switch::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:transform .2s}
.toggle input:checked + .switch{background:var(--accent)}
.toggle input:checked + .switch::after{transform:translateX(16px)}
.toggle input:focus-visible + .switch{outline:2px solid var(--accent);outline-offset:2px}

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

@keyframes pop{from{opacity:.3;filter:blur(2px)}to{opacity:1;filter:none}}
@keyframes blink{50%{opacity:0}}

@media (max-width:760px){
  .panel{border-left:none;border-top:1px solid var(--line);padding:24px 16px 40px}
  .stage{padding:16px 16px 24px}
  .screen{padding:10px;border-radius:14px}
  .view{min-height:0;height:auto;aspect-ratio:4/3}
  .privacy{margin-left:0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition-duration:.01ms !important}
}

/* 직접 입력칸: 단위(px·%·°)는 흐리게, 숫자는 본문색 */
.tb-num-wrap .tb-num{color:var(--ink)}

/* 다크 모드 (인쇄는 라이트 그대로) — 결과물(캔버스·ASCII 출력)은 그대로 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#141311; --surface:#1a1916; --panel:#1f1e1b; --panel-soft:#24231f;
    --ink:#eeece6; --ink-hover:#ffffff; --ink-2:#cac7bf; --sub:#a29f96; --muted:#8c8980;
    --line:#2f2d29; --line-2:#3a3833; --line-3:#272622; --hover:#2a2925; --soft:#26251f; --track:#363530;
    --accent:#ff6b4f;
  }
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .tab.is-active,:root[data-theme="dark"] .toast{color:var(--bg)}
  :root[data-theme="dark"] .tab:not(.is-active),:root[data-theme="dark"] .pal{background:var(--panel)}
  :root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] .tab.is-active .tab-ico{color:#c2410c}
  :root[data-theme="dark"] .screen{box-shadow:0 0 0 1px var(--line-2),0 24px 50px rgba(0,0,0,.4),inset 0 0 0 2px var(--crt-2)}
  :root[data-theme="dark"] .pal-preview i{box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
}