: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:#3f8f7a; /* 새벽 숲 그린 */
  --accent-soft:rgba(63,143,122,.13);
  --night:#14201d; --night-2:#1c2b27; --night-line:rgba(255,255,255,.09); --glow:#8fe0c4;
  --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)}
.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{font-size:17px;font-weight:700;letter-spacing:-.01em}
.actions{display:flex;gap:8px}
.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)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:640px){ .topbar{padding:14px 16px} }

/* ---------- 레이아웃 ---------- */
.mixer{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:32px 28px 48px;display:grid;grid-template-columns:360px minmax(0,1fr);gap:28px;align-items:start}

/* ---------- 왼쪽 덱 (밤 패널) ---------- */
.deck{position:sticky;top:20px;display:flex;flex-direction:column;gap:22px;padding:22px;border-radius:22px;background:radial-gradient(120% 80% at 0% 0%,#24413a 0%,var(--night) 60%);color:#e9f1ee;box-shadow:0 30px 60px -30px rgba(20,32,29,.6)}
.deck .mono-label{color:#86a39a}
.deck-top{display:flex;flex-direction:column;gap:10px}
.deck-label{min-height:14px}
.viz{display:block;width:100%;height:90px;border-radius:14px;background:rgba(0,0,0,.22);border:1px solid var(--night-line)}
.deck-play{display:flex;align-items:center;gap:16px}
.play{flex:0 0 68px;width:68px;height:68px;border-radius:50%;border:none;background:var(--glow);color:var(--night);display:grid;place-items:center;cursor:pointer;box-shadow:0 0 0 6px rgba(143,224,196,.12);transition:transform .15s,box-shadow .3s}
.play:hover{transform:scale(1.04)}
.play:active{transform:scale(.96)}
.play svg{width:30px;height:30px}
.play .ic-pause{display:none}
.play[aria-pressed="true"]{box-shadow:0 0 0 6px rgba(143,224,196,.18),0 0 34px rgba(143,224,196,.45)}
.play[aria-pressed="true"] .ic-play{display:none}
.play[aria-pressed="true"] .ic-pause{display:block}
.now{display:flex;flex-direction:column;gap:4px;min-width:0}
.now-title{font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.35;word-break:keep-all}
.now-sub{font-size:12.5px;color:#9db5ad;line-height:1.5;word-break:keep-all}
.deck-row{display:flex;flex-direction:column;gap:10px}
.row-label{display:flex;justify-content:space-between;align-items:baseline}
.row-val{font-family:var(--mono);font-size:13px;color:#e9f1ee}
.deck .seg{display:flex;background:rgba(255,255,255,.06);border-radius:999px;padding:3px;gap:2px}
.deck .seg-btn{flex:1;height:30px;padding:0 4px;background:transparent;color:#9db5ad;border:none;border-radius:999px;font-size:12px;cursor:pointer;white-space:nowrap}
.deck .seg-btn:hover{color:#fff}
.deck .seg-btn.is-active{background:var(--glow);color:var(--night);font-weight:500}
.timer-bar{height:3px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.timer-bar span{display:block;height:100%;width:0;background:var(--glow);transition:width 1s linear}
.deck-note{margin:0;font-size:11.5px;line-height:1.6;color:#7f9890;border-top:1px solid var(--night-line);padding-top:16px;word-break:keep-all}

/* range */
.range{-webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;cursor:pointer;margin:0;--p:50%}
.range::-webkit-slider-runnable-track{height:4px;border-radius:999px;background:linear-gradient(90deg,var(--fill,var(--accent)) var(--p),var(--rest,var(--track)) var(--p))}
.range::-moz-range-track{height:4px;border-radius:999px;background:linear-gradient(90deg,var(--fill,var(--accent)) var(--p),var(--rest,var(--track)) var(--p))}
.range::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;margin-top:-6px;border-radius:50%;background:#fff;border:2px solid var(--fill,var(--accent));box-shadow:0 1px 3px rgba(0,0,0,.2)}
.range::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--fill,var(--accent))}
.range--master{--fill:var(--glow);--rest:rgba(255,255,255,.12)}

/* ---------- 오른쪽 보드 ---------- */
.board{display:flex;flex-direction:column;gap:20px;min-width:0}
.presets{display:flex;flex-direction:column;gap:10px}
.preset-list{display:flex;flex-wrap:wrap;gap:8px}
.preset{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px 0 10px;border:1px solid var(--line-2);border-radius:999px;background:var(--panel);font-size:13px;cursor:pointer;transition:border-color .15s,background .15s}
.preset:hover{border-color:var(--accent);background:var(--accent-soft)}
.preset.is-active{background:var(--ink);border-color:var(--ink);color:#fff}
.preset-emoji{font-size:16px;line-height:1}

.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.grid-h{grid-column:1/-1;display:flex;align-items:baseline;gap:8px;margin:12px 0 -4px;font-size:14px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.grid-h:first-child{margin-top:0}
.grid-h .mono-label{font-weight:500}
.tile{position:relative;display:flex;flex-direction:column;gap:12px;padding:16px;border:1px solid var(--line);border-radius:18px;background:var(--panel);overflow:hidden;transition:border-color .2s,box-shadow .25s,background .25s}
.tile::before{content:"";position:absolute;inset:auto -30% -60% -30%;height:120%;background:radial-gradient(closest-side,var(--tint),transparent);opacity:0;transition:opacity .4s;pointer-events:none}
.tile.is-on{border-color:color-mix(in srgb,var(--tint) 60%,var(--line));box-shadow:0 14px 30px -20px var(--tint)}
.tile.is-on::before{opacity:.35}
.tile-toggle{position:relative;display:flex;align-items:center;gap:12px;padding:0;border:none;background:none;text-align:left;cursor:pointer}
.tile-icon{flex:0 0 46px;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--soft);color:var(--ink-2);transition:background .25s,color .25s,transform .2s}
.tile-icon svg{width:26px;height:26px}
.tile-toggle:hover .tile-icon{transform:scale(1.05)}
.tile.is-on .tile-icon{background:var(--tint);color:#fff}
.tile.is-on.is-playing .tile-icon{animation:breathe 3.2s ease-in-out infinite}
.tile-text{display:flex;flex-direction:column;gap:2px;min-width:0}
.tile-name{font-size:15px;font-weight:700;letter-spacing:-.01em}
.tile-desc{font-size:12px;color:var(--sub);line-height:1.4}
.tile-state{position:absolute;top:14px;right:16px;font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--muted)}
.tile.is-on .tile-state{color:var(--ink)}
.tile-slider{position:relative;display:flex;align-items:center;gap:10px}
.tile-slider .range{--fill:var(--tint)}
.tile-val{flex:0 0 28px;text-align:right;font-family:var(--mono);font-size:12px;color:var(--sub)}
@keyframes breathe{0%,100%{box-shadow:0 0 0 0 color-mix(in srgb,var(--tint) 40%,transparent)}50%{box-shadow:0 0 0 7px color-mix(in srgb,var(--tint) 0%,transparent)}}

.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);padding:10px 18px;border-radius:999px;background:var(--ink);color:#fff;font-size:13px;z-index:100;box-shadow:0 10px 30px rgba(0,0,0,.2);animation:toast .25s ease-out;max-width:calc(100% - 32px);text-align:center}
@keyframes toast{from{opacity:0;transform:translate(-50%,8px)}}

@media (max-width:860px){
  .mixer{grid-template-columns:minmax(0,1fr)}
  .deck{position:relative;top:0}
}
@media (max-width:640px){
  .mixer{padding:20px 16px 40px;gap:20px}
  .deck{padding:18px;border-radius:18px;gap:18px}
  .viz{height:64px}
  .grid{gap:8px}
  .tile{padding:14px 10px 10px;gap:8px;border-radius:16px}
  .tile-toggle{flex-direction:column;gap:8px;text-align:center}
  .tile-text{align-items:center}
  .tile-icon{flex-basis:auto;width:42px;height:42px;border-radius:13px}
  .tile-icon svg{width:23px;height:23px}
  .tile-desc{display:none}
  .tile-name{font-size:13px;line-height:1.3;word-break:keep-all}
  .tile-state{display:none}
  .tile-val{display:none}
  .preset-list{flex-wrap:nowrap;overflow-x:auto;margin:0 -16px;padding:0 16px 4px;scrollbar-width:none}
  .preset-list::-webkit-scrollbar{display:none}
  .preset{flex:0 0 auto}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* 다크 모드: 밤에 틀어 두기 좋게 어두운 숲 톤 */
:root[data-theme="dark"]{
  --bg:#0e1412; --surface:#121a17; --panel:#16201c; --panel-soft:#19231f;
  --ink:#e4ece9; --ink-hover:#ffffff; --ink-2:#c0ccc7; --sub:#91a19a; --muted:#7b8a84;
  --line:#24302c; --line-2:#2c3935; --line-3:#1d2824; --hover:#1d2824; --soft:#1e2925; --track:#2a3632;
  --accent:#6cc9a9; --accent-soft:rgba(108,201,169,.14);
}
:root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .preset.is-active,:root[data-theme="dark"] .toast{color:var(--bg)}
:root[data-theme="dark"] .deck{border:1px solid var(--night-line)}
:root[data-theme="dark"] .tile.is-on::before{opacity:.22}