: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:#2bd97c;
  --term:#07100a; --term-2:#0d1a11; --term-line:rgba(57,255,136,.14); --phos:#39ff88; --phos-dim:rgba(57,255,136,.6);
  --font:"IBM Plex Sans KR",sans-serif; --mono:"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)}
.mono{font-family:var(--mono)}
.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}
.brand-title{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em}
.actions{display:flex;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:disabled{opacity:.4;cursor:default}
.btn:disabled:hover{background:transparent}
.btn--solid{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.btn--solid:disabled:hover{background:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:640px){ .topbar{padding:14px 16px} }

/* ---------- 레이아웃 ---------- */
.wa{flex:1;display:flex;flex-wrap:wrap;align-items:stretch;background:#0b120d}
.term{flex:999 1 560px;min-width:0;display:flex;flex-direction:column;padding:24px 28px;gap:0}
.panel{flex:1 1 280px;max-width:100%;min-width:0;background:var(--term-2);border-left:1px solid var(--term-line);padding:24px;display:flex;flex-direction:column;gap:22px;color:#d9f5e3}
.group{display:flex;flex-direction:column;gap:12px}
.group + .group{border-top:1px dashed var(--term-line);padding-top:20px}

/* ---------- 터미널 창 ---------- */
.term-bar{display:flex;align-items:center;gap:12px;height:38px;padding:0 14px;border-radius:14px 14px 0 0;background:#132119;border:1px solid var(--term-line);border-bottom:none}
.dots{display:flex;gap:6px}
.dots i{width:10px;height:10px;border-radius:50%;background:#2a3a30}
.dots i:first-child{background:#ff5f57}.dots i:nth-child(2){background:#febc2e}.dots i:nth-child(3){background:#28c840}
.term-title{font-size:12px;color:var(--phos-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.term-fps{margin-left:auto;font-size:11px;color:rgba(57,255,136,.45);white-space:nowrap}
.term-screen{position:relative;flex:1 0 auto;height:clamp(360px,calc(100vh - 260px),680px);background:radial-gradient(120% 100% at 50% 40%,#0c1a11,var(--term) 70%);border:1px solid var(--term-line);overflow:hidden;display:flex;align-items:center;justify-content:center}
.term-screen canvas{display:block;max-width:100%;max-height:100%}
.scanlines{position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(rgba(0,0,0,0) 0 2px,rgba(0,0,0,.22) 2px 3px);mix-blend-mode:multiply}
.scanlines::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 50% 50%,transparent 55%,rgba(0,0,0,.55))}
.term-foot{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:0 0 14px 14px;background:#0f1a13;border:1px solid var(--term-line);border-top:none;flex-wrap:wrap}
.t-btn{height:32px;padding:0 14px;border-radius:8px;border:1px solid var(--term-line);background:transparent;color:var(--phos);font-family:var(--mono);font-size:12px;cursor:pointer}
.t-btn:hover{background:rgba(57,255,136,.08)}
.t-btn:disabled{opacity:.35;cursor:default}
.t-btn:disabled:hover{background:transparent}
.t-btn[aria-pressed="true"]{background:var(--phos);color:#04140a}
.foot-note{margin-left:auto;font-size:11.5px;color:rgba(217,245,227,.5)}

.start{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:24px;text-align:center;background:rgba(5,12,8,.72)}
.start-logo{margin:0;font-size:12px;line-height:1.15;color:var(--phos);text-shadow:0 0 8px rgba(57,255,136,.6);text-align:left}
.start-title{margin:0;color:#e9fff1;font-size:17px;font-weight:700}
.start-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.big-btn{height:46px;padding:0 20px;border-radius:10px;border:1px solid var(--phos-dim);background:transparent;color:var(--phos);font-size:14.5px;font-weight:500;cursor:pointer;transition:background .15s,transform .15s}
.big-btn:hover{background:rgba(57,255,136,.1);transform:translateY(-1px)}
.big-btn--cam{background:var(--phos);color:#04140a;border-color:var(--phos);box-shadow:0 0 24px -6px var(--phos)}
.big-btn--cam:hover{background:var(--phos);filter:brightness(1.08)}
.start-note{margin:0;max-width:420px;font-size:12.5px;line-height:1.6;color:rgba(217,245,227,.7)}
.start-error{margin:0;max-width:460px;padding:10px 14px;border-radius:10px;background:rgba(255,95,87,.12);border:1px solid rgba(255,95,87,.5);color:#ffd0cc;font-size:13px;line-height:1.55}
.freeze-badge{position:absolute;right:12px;top:12px;z-index:1;padding:5px 10px;border-radius:6px;border:none;background:var(--phos);color:#04140a;font-size:11px;letter-spacing:.06em;cursor:pointer}

/* ---------- 패널 ---------- */
.p-label{font-size:10.5px;letter-spacing:.16em;color:rgba(57,255,136,.6)}
.row{display:flex;justify-content:space-between;align-items:center;gap:8px}
.panel .tb-num{color:#fff}
.panel .tb-num-wrap{color:rgba(57,255,136,.6)}
.group .tb-presets{margin-top:-4px}
.tb-presets button[aria-pressed="true"]{color:var(--term)}
.val{font-size:15px;font-weight:700;color:var(--phos)}
input[type=range]{width:100%;margin:0 0 4px;accent-color:var(--phos)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:7px 10px;border-radius:8px;border:1px solid var(--term-line);background:transparent;color:#d9f5e3;font-size:12px;cursor:pointer;text-align:left}
.chip code{font-family:var(--mono);font-size:11px;color:rgba(57,255,136,.7);white-space:pre}
.chip:hover{background:rgba(57,255,136,.06)}
.chip[aria-checked="true"]{border-color:var(--phos);background:rgba(57,255,136,.12)}
.custom{display:flex;flex-direction:column;gap:6px;font-size:12px;color:rgba(217,245,227,.6)}
.t-input{height:36px;padding:0 10px;border-radius:8px;border:1px solid var(--term-line);background:#07100a;color:var(--phos);font-size:13px;white-space:pre}
.t-input:focus{outline:none;border-color:var(--phos)}
.seg{display:flex;background:rgba(57,255,136,.06);border-radius:10px;padding:3px;gap:2px}
.seg-btn{flex:1;height:30px;padding:0 8px;background:transparent;color:rgba(217,245,227,.6);border:none;border-radius:8px;font-size:12.5px;cursor:pointer;white-space:nowrap}
.seg-btn[aria-checked="true"]{background:var(--phos);color:#04140a;font-weight:500}
.switch{position:relative;display:flex;align-items:center;gap:10px;font-size:13px;color:#d9f5e3;cursor:pointer}
.switch input{position:absolute;opacity:0;width:36px;height:20px;margin:0}
.switch-ui{position:relative;width:36px;height:20px;flex-shrink:0;border-radius:999px;background:rgba(255,255,255,.14);transition:background .2s}
.switch-ui::after{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#d9f5e3;transition:transform .2s}
.switch input:checked + .switch-ui{background:var(--phos)}
.switch input:checked + .switch-ui::after{transform:translateX(16px);background:#04140a}
.switch input:focus-visible + .switch-ui{outline:2px solid var(--phos);outline-offset:2px}

.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);padding:10px 16px;border-radius:10px;background:var(--phos);color:#04140a;font-size:13px;font-weight:500;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:100}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

@media (max-width:640px){
  .term{padding:16px}
  .term-screen{height:58vh;min-height:320px}
  .start-logo{font-size:9px}
  .foot-note{margin-left:0;flex-basis:100%}
  .panel{border-left:none;border-top:1px solid var(--term-line);padding:20px 16px 32px}
}
@media (prefers-reduced-motion:reduce){
  .big-btn,.switch-ui,.switch-ui::after,.toast{transition:none}
}

/* 다크 모드 (인쇄는 라이트 그대로) — 터미널 영역은 원래부터 어두움 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#111513; --surface:#151a17; --panel:#1a201c; --panel-soft:#1e2521;
    --ink:#e7ede9; --ink-hover:#ffffff; --ink-2:#c3ccc6; --sub:#97a39b; --muted:#839088;
    --line:#26302a; --line-2:#303b34; --line-3:#212924; --hover:#222a25; --soft:#212924; --track:#2d3731;
  }
  :root[data-theme="dark"] .btn--solid{color:var(--bg)}
  :root[data-theme="dark"] .wa{border-bottom:1px solid var(--term-line)}
}