: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:#22a35a; /* 잔디 */
  --accent-soft:#e3f5ea;
  --cell0:#ebe9e3;
  --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;word-break:keep-all}
button,input{font:inherit;color:inherit}
.mono-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.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;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)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.wrap{width:100%;max-width:1120px;margin:0 auto;padding:30px 28px 56px;display:grid;grid-template-columns:minmax(0,400px) minmax(0,1fr);gap:24px;align-items:start}
.note{grid-column:1 / -1;margin:0;font-size:12px;color:var(--muted);line-height:1.6}

/* ---------- 오늘 ---------- */
.today{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px}
.today-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:16px}
.today-title{margin:4px 0 0;font-size:20px}
.today-progress{font-size:13px;color:var(--sub)}
.today-progress b{font-family:var(--mono);font-size:24px;color:var(--accent);font-weight:500}
.habits{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.empty{padding:20px;text-align:center;color:var(--muted);font-size:13px;border:1px dashed var(--line-2);border-radius:14px}
.habit{display:grid;grid-template-columns:44px minmax(0,1fr) auto;align-items:center;gap:12px;padding:12px;border:1.5px solid var(--line);border-radius:16px;background:#fff;transition:border-color .2s,background .2s}
.habit.is-done{border-color:var(--hc);background:color-mix(in srgb,var(--hc) 7%,#fff)}
.habit.is-pop .check{animation:pop .4s cubic-bezier(.3,1.6,.5,1)}
@keyframes pop{0%{transform:scale(.7)}100%{transform:none}}
.check{width:44px;height:44px;border-radius:50%;border:2px solid var(--line-2);background:#fff;cursor:pointer;display:grid;place-items:center;transition:background .2s,border-color .2s}
.check svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:24;stroke-dashoffset:24;transition:stroke-dashoffset .3s .05s}
.check:hover{border-color:var(--hc)}
.habit.is-done .check{background:var(--hc);border-color:var(--hc)}
.habit.is-done .check svg{stroke-dashoffset:0}
.habit-main{min-width:0;display:flex;flex-direction:column;gap:5px}
.habit-name{font-weight:700;font-size:15px;cursor:text;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rename-input{height:30px;border:1.5px solid var(--hc);border-radius:8px;padding:0 8px;font-size:14px;font-weight:700;width:100%;outline:none}
.habit-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:11.5px;color:var(--muted)}
.dots{display:inline-flex;gap:3px}
.dots i{width:8px;height:8px;border-radius:2px;background:var(--cell0)}
.dots i.on{background:var(--hc)}
.streak{font-weight:500}
.streak.is-hot{color:#d9480f}
.habit-tools{display:flex;gap:2px}
.icon-btn{min-width:30px;height:30px;padding:0 6px;border:none;background:transparent;border-radius:8px;cursor:pointer;color:var(--muted);font-size:13px}
.icon-btn:hover{background:var(--soft);color:var(--ink)}
.icon-btn.is-confirm{background:#fdecea;color:#c0392b;font-weight:700}

.add{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding-top:16px;border-top:1px dashed var(--line-2)}
.add-input{flex:1 1 100%;height:42px;border:1.5px solid var(--line-2);border-radius:12px;padding:0 12px;background:var(--surface);font-size:14px;outline:none}
.add-input:focus{border-color:var(--accent)}
.colors{display:flex;gap:6px;align-items:center;flex:1}
.color{width:24px;height:24px;border-radius:50%;border:none;background:var(--c);cursor:pointer;box-shadow:0 0 0 2px #fff,0 0 0 3px transparent;transition:box-shadow .15s}
.color[aria-checked="true"]{box-shadow:0 0 0 2px #fff,0 0 0 4px var(--c)}
.suggest{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:12px}
.suggest .mono-label{margin-right:4px}
.sug{height:28px;padding:0 10px;border:1px dashed var(--line-2);border-radius:999px;background:transparent;font-size:12px;cursor:pointer;color:var(--ink-2)}
.sug:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- 보드 ---------- */
.board{background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:22px;min-width:0}
.board-head{display:flex;flex-direction:column;gap:12px}
.board-title{margin:0;font-size:18px}
.filter{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.ftab{flex:none;display:flex;align-items:center;gap:6px;height:32px;padding:0 12px;border:1px solid var(--line-2);border-radius:999px;background:#fff;font-size:12.5px;cursor:pointer;max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ftab i{width:8px;height:8px;border-radius:50%;background:var(--hc);flex:none}
.ftab[aria-selected="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:16px 0}
.stat{padding:12px 14px;background:var(--soft);border-radius:14px;display:flex;flex-direction:column;gap:2px;min-width:0}
.stat span{font-size:11.5px;color:var(--sub)}
.stat b{font-family:var(--mono);font-size:22px;font-weight:500}
.heat-scroll{overflow-x:auto;padding:4px 2px 8px;scrollbar-width:thin}
.heat{--cs:13px;--gap:3px;display:inline-flex;flex-direction:column;gap:4px;min-width:max-content}
.months,.grid{display:grid;column-gap:var(--gap)}
.months{font-size:10.5px;color:var(--muted);height:14px}
.months span{white-space:nowrap}
.grid{grid-template-rows:repeat(7,var(--cs));row-gap:var(--gap)}
.wd{grid-column:1;font-size:10px;color:var(--muted);line-height:var(--cs)}
.cell{width:var(--cs);height:var(--cs);border-radius:3px;border:none;padding:0;background:var(--cell0)}
button.cell{cursor:pointer}
.cell.is-future{background:transparent}
.cell.l1{background:color-mix(in srgb,var(--hc) 30%,#fff)}
.cell.l2{background:color-mix(in srgb,var(--hc) 55%,#fff)}
.cell.l3{background:color-mix(in srgb,var(--hc) 78%,#fff)}
.cell.l4{background:var(--hc)}
.cell.is-today{outline:1.5px solid var(--ink);outline-offset:1px}
.heat.is-editable button.cell:hover{outline:1.5px solid var(--hc);outline-offset:1px}
.heat-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:6px;font-size:12px;color:var(--muted)}
.heat-legend{display:inline-flex;align-items:center;gap:3px}
.heat-legend i{width:11px;height:11px;border-radius:2px;background:var(--cell0)}
.heat-legend .l1{background:#a7dcbc} .heat-legend .l2{background:#6cc490} .heat-legend .l3{background:#3caf6b} .heat-legend .l4{background:var(--accent)}

.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);text-align:center}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

@media (max-width:960px){ .wrap{grid-template-columns:minmax(0,1fr)} }
@media (max-width:640px){
  .topbar{padding:14px 16px}
  .wrap{padding:18px 16px 40px;gap:16px}
  .today,.board{padding:18px 14px;border-radius:20px}
  .habit{grid-template-columns:40px minmax(0,1fr) auto;gap:10px;padding:10px}
  .check{width:40px;height:40px}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat b{font-size:18px}
  .heat{--cs:12px;--gap:3px}
}
@media (prefers-reduced-motion:reduce){ *{animation:none !important;transition:none !important} }

/* 다크 모드 (인쇄는 라이트 그대로). 잔디 칸은 습관 색을 어두운 패널 위로 섞음 */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#121513; --surface:#171a18; --panel:#1c1f1d; --panel-soft:#212422;
    --ink:#e7ebe8; --ink-hover:#ffffff; --ink-2:#c4c9c5; --sub:#9aa19c; --muted:#868d88;
    --line:#2b302d; --line-2:#363b38; --line-3:#232725; --hover:#262a28; --soft:#232725; --track:#313633;
    --accent:#3cc275; --accent-soft:rgba(60,194,117,.14);
    --cell0:#2a2f2c;
  }
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .toast{color:var(--bg)}
  :root[data-theme="dark"] .btn--solid{background:var(--accent)}
  :root[data-theme="dark"] .btn--solid:hover{background:#68d494}
  :root[data-theme="dark"] .habit{background:var(--panel-soft)}
  :root[data-theme="dark"] .habit.is-done{background:color-mix(in srgb,var(--hc) 12%,var(--panel))}
  :root[data-theme="dark"] .check{background:var(--panel)}
  :root[data-theme="dark"] .habit.is-done .check{background:var(--hc)}
  :root[data-theme="dark"] .rename-input{background:var(--surface)}
  :root[data-theme="dark"] .streak.is-hot{color:#fb8a4c}
  :root[data-theme="dark"] .icon-btn.is-confirm{background:rgba(248,113,113,.16);color:#fca5a5}
  :root[data-theme="dark"] .color{box-shadow:0 0 0 2px var(--panel),0 0 0 3px transparent}
  :root[data-theme="dark"] .color[aria-checked="true"]{box-shadow:0 0 0 2px var(--panel),0 0 0 4px var(--c)}
  :root[data-theme="dark"] .ftab{background:var(--panel)}
  :root[data-theme="dark"] .ftab[aria-selected="true"]{background:var(--line-2);border-color:var(--sub);color:var(--ink)}
  :root[data-theme="dark"] .cell.l1{background:color-mix(in srgb,var(--hc) 32%,var(--panel))}
  :root[data-theme="dark"] .cell.l2{background:color-mix(in srgb,var(--hc) 56%,var(--panel))}
  :root[data-theme="dark"] .cell.l3{background:color-mix(in srgb,var(--hc) 78%,var(--panel))}
  :root[data-theme="dark"] .heat-legend .l1{background:color-mix(in srgb,#22a35a 32%,var(--panel))}
  :root[data-theme="dark"] .heat-legend .l2{background:color-mix(in srgb,#22a35a 56%,var(--panel))}
  :root[data-theme="dark"] .heat-legend .l3{background:color-mix(in srgb,#22a35a 78%,var(--panel))}
  :root[data-theme="dark"] .heat-legend .l4{background:#22a35a}
}