: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:#3451d1; /* 코발트 */
  --accent-soft:#e8ecfc;
  --lane:#ecebe5;
  --danger:#d93a30; --warn:#e07800;
  --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,select,textarea{font:inherit;color:inherit}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.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{font-size:17px;font-weight:700;letter-spacing:-.01em}
.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.saved{font-size:11.5px;color:var(--muted);font-family:var(--mono);transition:color .3s}
.saved.is-flash{color:var(--accent)}
.btn{height:36px;padding:0 14px;background:#fff;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--ghost{background:transparent;border-style:dashed}
.btn--sm{height:30px;padding:0 11px;font-size:12px}
.btn--danger{color:var(--danger);border-color:#f0c9c5}
.btn--danger:hover{background:#fdf0ef}
.icon-btn{width:30px;height:30px;border:none;background:transparent;border-radius:8px;cursor:pointer;color:var(--sub);font-size:14px;display:inline-flex;align-items:center;justify-content:center;flex:none}
.icon-btn:hover{background:var(--hover);color:var(--ink)}
.text-input{height:40px;padding:0 12px;background:var(--surface);border:1px solid var(--line-2);border-radius:10px;font-size:14px;color:var(--ink);width:100%;min-width:0}
.text-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea.text-input{height:auto;padding:10px 12px;line-height:1.6;resize:vertical}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.wrap{width:100%;max-width:1440px;margin:0 auto;padding:18px 28px 40px;display:flex;flex-direction:column;gap:14px}

/* 보드 탭 */
.boardbar{display:flex;align-items:center;gap:10px;min-width:0}
.tabs{display:flex;gap:6px;overflow-x:auto;min-width:0;scrollbar-width:thin;padding:2px}
.tab{height:34px;padding:0 14px;border-radius:999px;border:1px solid transparent;background:transparent;font-size:13px;color:var(--ink-2);cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;gap:7px}
.tab:hover{background:var(--hover)}
.tab[aria-selected="true"]{background:var(--ink);color:#fff;font-weight:500}
.tab .n{font-family:var(--mono);font-size:10.5px;opacity:.6}

.board-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.board-title-wrap{display:flex;align-items:center;gap:4px;min-width:0}
.board-title{margin:0 6px 0 0;font-size:24px;font-weight:700;letter-spacing:-.02em;overflow-wrap:anywhere}
.board-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.search{position:relative;display:flex;align-items:center}
.search svg{position:absolute;left:12px;width:15px;height:15px;fill:none;stroke:var(--muted);stroke-width:1.8;stroke-linecap:round;pointer-events:none}
.search input{height:36px;width:260px;max-width:100%;padding:0 12px 0 34px;border:1px solid var(--line-2);border-radius:999px;background:#fff;font-size:13px}
.search input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.due-chip{height:36px;padding:0 13px;border-radius:999px;border:1px solid var(--line-2);background:#fff;font-size:12.5px;cursor:pointer;display:inline-flex;gap:6px;align-items:center;color:var(--ink-2)}
.due-chip b{font-family:var(--mono);color:var(--warn)}
.due-chip b.over{color:var(--danger)}
.due-chip[aria-pressed="true"]{background:#fff4e5;border-color:#f3c27a;color:var(--ink)}
.search-info{margin:-4px 0 0;font-size:12.5px;color:var(--sub)}

/* 칼럼 */
.lanes{display:flex;gap:14px;align-items:flex-start;overflow-x:auto;padding:4px 4px 18px;margin:0 -4px;scroll-snap-type:x proximity;min-height:360px;scrollbar-width:thin}
.col{flex:0 0 292px;max-width:292px;background:var(--lane);border-radius:18px;display:flex;flex-direction:column;scroll-snap-align:start;position:relative;
  background-image:radial-gradient(rgba(52,81,209,.07) 1px,transparent 1.2px);background-size:12px 12px}
.col-head{display:flex;align-items:center;gap:6px;padding:12px 10px 8px 14px}
.col-dot{width:9px;height:9px;border-radius:50%;background:var(--cc,#888);flex:none;box-shadow:0 0 0 3px rgba(255,255,255,.7)}
.col-name{flex:1;min-width:0;text-align:left;border:none;background:transparent;font-weight:700;font-size:14px;padding:4px 4px;border-radius:6px;cursor:text;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.col-name:hover{background:rgba(255,255,255,.6)}
.col-name-input{flex:1;min-width:0;height:30px;font-size:14px;font-weight:700;border:1px solid var(--accent);border-radius:6px;padding:0 6px;background:#fff}
.col-count{font-family:var(--mono);font-size:11px;color:var(--muted);background:rgba(255,255,255,.75);border-radius:999px;padding:2px 8px}
.col-menu{position:absolute;right:10px;top:44px;z-index:30;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 30px -10px rgba(0,0,0,.25);padding:6px;display:flex;flex-direction:column;min-width:150px}
.col-menu button{border:none;background:transparent;text-align:left;padding:8px 10px;border-radius:8px;font-size:13px;cursor:pointer}
.col-menu button:hover{background:var(--hover)}
.col-menu button.danger{color:var(--danger)}
.col-menu button:disabled{opacity:.35;cursor:default;background:transparent}
.cards{display:flex;flex-direction:column;gap:8px;padding:4px 10px 6px;min-height:60px}
.col.is-over{box-shadow:inset 0 0 0 2px var(--accent)}
.add-card{display:flex;gap:6px;padding:4px 10px 12px}
.add-card input{flex:1;min-width:0;height:36px;border:1px dashed #c9c6bd;background:transparent;border-radius:10px;padding:0 10px;font-size:13px}
.add-card input:focus{outline:none;background:#fff;border-style:solid;border-color:var(--accent)}
.add-card button{height:36px;padding:0 12px;border:none;border-radius:10px;background:var(--ink);color:#fff;font-size:12.5px;cursor:pointer}
.add-col-tile{flex:0 0 220px;height:96px;border:1.5px dashed #c9c6bd;border-radius:18px;background:transparent;color:var(--sub);font-size:14px;cursor:pointer}
.add-col-tile:hover{background:rgba(255,255,255,.5);color:var(--ink)}

/* 카드 */
.card{position:relative;background:#fff;border-radius:12px;padding:12px 34px 11px 14px;box-shadow:0 1px 0 rgba(0,0,0,.04),0 1px 3px rgba(0,0,0,.06);cursor:grab;
  -webkit-user-select:none;user-select:none;-webkit-touch-callout:none;transition:box-shadow .15s,transform .15s;overflow:hidden}
.card:hover{box-shadow:0 1px 0 rgba(0,0,0,.04),0 6px 16px -6px rgba(0,0,0,.18)}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--lc,transparent)}
.card-label{display:inline-block;height:6px;width:36px;border-radius:999px;background:var(--lc);margin-bottom:8px}
.card-title{margin:0;font-size:14px;font-weight:500;line-height:1.45;overflow-wrap:anywhere}
.card-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px;align-items:center}
.card-meta:empty{display:none}
.chip{display:inline-flex;align-items:center;gap:4px;height:22px;padding:0 8px;border-radius:999px;background:var(--soft);font-size:11.5px;color:var(--ink-2);font-family:var(--mono)}
.chip.soon{background:#fff1dc;color:#9a5300}
.chip.today{background:#ffe6c9;color:#a04a00;font-weight:700}
.chip.over{background:#fde4e1;color:#b3261e;font-weight:700}
.chip.done{background:#e3f4e8;color:#1f7a3d}
.chip.memo{font-family:var(--font)}
.grip{position:absolute;right:4px;top:6px;width:28px;height:28px;border:none;background:transparent;border-radius:8px;color:#b5b2a9;font-size:15px;cursor:grab;touch-action:none;display:flex;align-items:center;justify-content:center}
.grip svg{fill:currentColor;pointer-events:none}
.grip:hover{background:var(--soft);color:var(--ink-2)}
.card.is-hit{box-shadow:0 0 0 2px var(--accent)}
.card.is-placeholder{opacity:.28;box-shadow:none;outline:2px dashed var(--accent);outline-offset:-2px}
.card.is-press{transform:scale(.98)}
.card.ghost{position:fixed;z-index:1000;pointer-events:none;cursor:grabbing;transform:rotate(-2.5deg) scale(1.03);box-shadow:0 22px 40px -12px rgba(20,30,80,.45);opacity:.96;margin:0}
.card.is-new{animation:pop .3s cubic-bezier(.3,1.4,.5,1)}
@keyframes pop{from{transform:scale(.85);opacity:0}}
body.is-dragging .lanes{scroll-snap-type:none}
body.is-dragging{cursor:grabbing;-webkit-user-select:none;user-select:none}
.empty-col{font-size:12px;color:var(--muted);text-align:center;padding:14px 4px;border:1.5px dashed #d6d3ca;border-radius:12px}
.note{margin:0;font-size:12.5px;color:var(--sub);line-height:1.6}

/* 다이얼로그 */
.dlg{border:none;border-radius:20px;padding:0;width:min(560px,calc(100vw - 24px));max-height:calc(100vh - 32px);box-shadow:0 30px 70px -20px rgba(0,0,0,.4);color:var(--ink)}
.dlg::backdrop{background:rgba(28,28,26,.42)}
.dlg-inner{padding:18px 22px 20px;display:flex;flex-direction:column;gap:14px}
.dlg-head{display:flex;justify-content:space-between;align-items:center}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field-label{font-size:12px;color:var(--sub);font-weight:500}
.title-input{font-size:17px;font-weight:700;height:46px}
.label-pick{display:flex;gap:8px;flex-wrap:wrap}
.lp{width:34px;height:26px;border-radius:8px;border:1px solid rgba(0,0,0,.06);background:var(--lc);cursor:pointer;position:relative}
.lp.none{background:repeating-linear-gradient(135deg,#fff 0 5px,#eee 5px 10px)}
.lp[aria-checked="true"]{box-shadow:0 0 0 2px #fff,0 0 0 4px var(--ink)}
.due-input{display:flex;gap:6px;align-items:center}
.due-input .btn{flex:none}
.check-bar{height:6px;background:var(--track);border-radius:999px;overflow:hidden}
.check-bar span{display:block;height:100%;width:0;background:#2d9d5a;transition:width .25s}
.checklist{list-style:none;margin:2px 0 0;padding:0;display:flex;flex-direction:column;gap:2px}
.checklist li{display:flex;align-items:center;gap:8px;padding:4px 4px;border-radius:8px}
.checklist li:hover{background:var(--panel-soft)}
.checklist input[type=checkbox]{width:18px;height:18px;accent-color:#2d9d5a;flex:none}
.checklist .ct{flex:1;min-width:0;font-size:14px;overflow-wrap:anywhere}
.checklist li.done .ct{text-decoration:line-through;color:var(--muted)}
.check-add{display:flex;gap:6px}
.check-add .btn{height:40px;flex:none}
.dlg-foot{display:flex;align-items:center;gap:8px;flex-wrap:wrap;border-top:1px solid var(--line-3);padding-top:14px}
.order-btns{display:flex;gap:6px;margin-right:auto}

/* 토스트 */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:var(--ink);color:#fff;border-radius:999px;padding:10px 18px;font-size:13px;display:flex;gap:12px;align-items:center;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:2000;max-width:calc(100vw - 32px)}
.toast.is-show{opacity:1;transform:translate(-50%,0);pointer-events:auto}
.toast button{border:none;background:transparent;color:#9fb2ff;font-weight:700;cursor:pointer;padding:0}

@media (max-width:640px){
  .topbar{padding:14px 16px}
  .wrap{padding:14px 16px 32px}
  .board-title{font-size:20px}
  .board-tools{width:100%}
  .search{flex:1 1 100%}
  .search input{width:100%}
  .lanes{margin:0 -16px;padding:4px 16px 18px;scroll-padding:0 16px}
  .col{flex-basis:80vw;max-width:300px}
  .field-row{grid-template-columns:1fr}
  .dlg-inner{padding:16px}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}

/* 다크 모드 (인쇄는 라이트 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:#2a2931; --hover:#2a2932; --soft:#302f39; --track:#34333d;
    --accent:#8197f5; --accent-soft:rgba(129,151,245,.16);
    --lane:#1b1a21; --danger:#ff7b72; --warn:#ffa94d;
  }
  :root[data-theme="dark"] .btn{background:var(--panel)}
  :root[data-theme="dark"] .btn:hover{background:var(--hover)}
  :root[data-theme="dark"] .btn--ghost{background:transparent}
  :root[data-theme="dark"] .btn--solid{background:var(--ink);color:var(--bg)}
  :root[data-theme="dark"] .btn--solid:hover{background:var(--ink-hover)}
  :root[data-theme="dark"] .btn--danger{border-color:rgba(255,123,114,.4)}
  :root[data-theme="dark"] .btn--danger:hover{background:rgba(255,123,114,.12)}
  :root[data-theme="dark"] .tab[aria-selected="true"]{color:var(--bg)}
  :root[data-theme="dark"] .search input,:root[data-theme="dark"] .due-chip{background:var(--panel)}
  :root[data-theme="dark"] .due-chip[aria-pressed="true"]{background:rgba(255,169,77,.14);border-color:rgba(255,169,77,.45)}
  :root[data-theme="dark"] .col{background-image:radial-gradient(rgba(129,151,245,.06) 1px,transparent 1.2px);box-shadow:inset 0 0 0 1px var(--line)}
  :root[data-theme="dark"] .col.is-over{box-shadow:inset 0 0 0 2px var(--accent)}
  :root[data-theme="dark"] .col-dot{box-shadow:0 0 0 3px rgba(255,255,255,.08)}
  :root[data-theme="dark"] .col-name:hover{background:rgba(255,255,255,.06)}
  :root[data-theme="dark"] .col-name-input{background:var(--panel)}
  :root[data-theme="dark"] .col-count{background:rgba(255,255,255,.06)}
  :root[data-theme="dark"] .col-menu{background:var(--panel-soft);border-color:var(--line-2);box-shadow:0 12px 30px -10px rgba(0,0,0,.6)}
  :root[data-theme="dark"] .add-card input{border-color:#46454f}
  :root[data-theme="dark"] .add-card input:focus{background:var(--panel);border-color:var(--accent)}
  :root[data-theme="dark"] .add-card button{background:var(--line-2);color:var(--ink)}
  :root[data-theme="dark"] .add-col-tile{border-color:#46454f}
  :root[data-theme="dark"] .add-col-tile:hover{background:rgba(255,255,255,.04)}
  :root[data-theme="dark"] .card{background:#27262f;box-shadow:0 1px 0 rgba(0,0,0,.2),0 1px 3px rgba(0,0,0,.3)}
  :root[data-theme="dark"] .card:hover{box-shadow:0 1px 0 rgba(0,0,0,.2),0 6px 16px -6px rgba(0,0,0,.6)}
  :root[data-theme="dark"] .card.is-hit{box-shadow:0 0 0 2px var(--accent)}
  :root[data-theme="dark"] .card.is-placeholder{box-shadow:none}
  :root[data-theme="dark"] .card.ghost{box-shadow:0 22px 40px -12px rgba(0,0,0,.7)}
  :root[data-theme="dark"] .chip.soon{background:rgba(255,169,77,.14);color:#ffc078}
  :root[data-theme="dark"] .chip.today{background:rgba(255,146,43,.22);color:#ffb066}
  :root[data-theme="dark"] .chip.over{background:rgba(255,107,107,.16);color:#ff9a92}
  :root[data-theme="dark"] .chip.done{background:rgba(81,207,102,.14);color:#7ad493}
  :root[data-theme="dark"] .grip{color:#73717e}
  :root[data-theme="dark"] .empty-col{border-color:var(--line-2)}
  :root[data-theme="dark"] .dlg{background:var(--panel);box-shadow:0 0 0 1px var(--line-2),0 30px 70px -20px rgba(0,0,0,.7)}
  :root[data-theme="dark"] .dlg::backdrop{background:rgba(5,5,8,.62)}
  :root[data-theme="dark"] .lp{border-color:rgba(255,255,255,.1)}
  :root[data-theme="dark"] .lp.none{background:repeating-linear-gradient(135deg,#2a2932 0 5px,#373640 5px 10px)}
  :root[data-theme="dark"] .lp[aria-checked="true"]{box-shadow:0 0 0 2px var(--panel),0 0 0 4px var(--ink)}
  :root[data-theme="dark"] .toast{color:var(--bg)}
  :root[data-theme="dark"] .toast button{color:#3451d1}
}