: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:#ff6b4a; /* 형광 코랄 */
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace;
  --hour:58px;
}
*{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{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)}
.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)}
.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--accent{background:var(--accent);color:#fff;border:none;font-weight:700}
.btn--accent:hover{filter:brightness(.95)}
.btn--sm{height:30px;padding:0 12px;font-size:12px}
.btn--danger{color:#d9442f;border-color:#f2c8c1}
.text-input{height:38px;padding:0 10px;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(--ink);box-shadow:0 0 0 3px rgba(28,28,26,.08)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.wrap{width:100%;max-width:1180px;margin:0 auto;padding:18px 28px 44px;display:flex;flex-direction:column;gap:14px}
.settings{display:flex;flex-wrap:wrap;gap:14px 18px;align-items:flex-end;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px 16px}
.field{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--sub);min-width:0}
.field--title{flex:1 1 200px}
.range{display:flex;align-items:center;gap:6px}
.sel{width:auto;padding-right:6px}
.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px}
.seg label{position:relative}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:flex;align-items:center;height:32px;padding:0 12px;border-radius:999px;font-size:13px;color:var(--ink-2);cursor:pointer;white-space:nowrap}
.seg input:checked + span{background:#fff;color:var(--ink);font-weight:700;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.seg label:has(input:focus-visible){outline:2px solid var(--accent);border-radius:999px}
.themes{display:flex;gap:6px}
.theme{position:relative;cursor:pointer}
.theme input{position:absolute;opacity:0;pointer-events:none}
.theme span{display:block;width:32px;height:32px;border-radius:9px;background:var(--tb);border:1px solid rgba(0,0,0,.12);position:relative;overflow:hidden}
.theme span::after{content:"";position:absolute;left:5px;top:6px;width:12px;height:16px;border-radius:3px;background:var(--tc)}
.theme input:checked + span{box-shadow:0 0 0 2px #fff,0 0 0 4px var(--ink)}
.theme:has(input:focus-visible) span{outline:2px solid var(--accent);outline-offset:3px}

.board-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.warn{margin:0;font-size:12.5px;color:#a8550b;background:#fff3df;border-radius:999px;padding:6px 12px}
.save-group{display:flex;gap:8px;margin-left:auto;align-items:center}
.save-group .sel{height:36px;border-radius:999px;font-size:13px}

/* 시간표 보드 (테마 변수는 JS가 넣음) */
.board-wrap{border-radius:22px;overflow:hidden;box-shadow:0 1px 0 var(--line),0 18px 40px -26px rgba(0,0,0,.4)}
.board{--tbg:#fbfaf6;--tgrid:#e6e3da;--tgrid2:#f0eee7;--ttext:#2a2a28;--tsub:#8a877f;--thead:#f1efe8;
  background:var(--tbg);color:var(--ttext);padding:16px 14px 14px;display:flex;flex-direction:column;gap:10px;transition:background .3s}
.board-title{font-size:20px;font-weight:700;letter-spacing:-.02em;padding:0 4px;min-height:26px}
.grid{display:grid;grid-template-columns:44px repeat(var(--cols),minmax(0,1fr));position:relative}
.dh{text-align:center;font-size:12.5px;font-weight:700;padding:8px 0;background:var(--thead);border-bottom:1px solid var(--tgrid)}
.dh:first-child{border-radius:12px 0 0 0}
.dh:last-child{border-radius:0 12px 0 0}
.dh small{display:block;font-family:var(--mono);font-size:9.5px;font-weight:400;color:var(--tsub);letter-spacing:.1em}
.times{position:relative}
.tlabel{position:absolute;right:6px;font-family:var(--mono);font-size:10.5px;color:var(--tsub);transform:translateY(-50%)}
.tlabel:first-child{transform:none;top:2px !important}
.col{position:relative;border-left:1px solid var(--tgrid);cursor:copy;
  background-image:linear-gradient(var(--tgrid) 1px,transparent 1px),linear-gradient(var(--tgrid2) 1px,transparent 1px);
  background-size:100% var(--hour),100% calc(var(--hour) / 2)}
.grid.step60 .col{background-image:linear-gradient(var(--tgrid) 1px,transparent 1px);background-size:100% var(--hour)}
.col.is-target{background-color:rgba(255,107,74,.06)}
.blk{position:absolute;left:3px;right:3px;border-radius:9px;background:var(--bc);color:#1d1d1b;padding:5px 6px 10px;overflow:hidden;cursor:grab;text-align:left;border:none;font-size:12px;line-height:1.3;
  box-shadow:0 1px 0 rgba(0,0,0,.08),inset 0 0 0 1px rgba(0,0,0,.05);-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;transition:box-shadow .15s,transform .15s;display:flex;flex-direction:column;gap:1px;touch-action:manipulation}
.blk:hover{box-shadow:0 6px 16px -6px rgba(0,0,0,.35)}
.blk b{font-weight:700;font-size:12.5px;overflow-wrap:anywhere}
.blk .bt{font-family:var(--mono);font-size:10px;opacity:.75}
.blk .bp,.blk .bm{font-size:11px;opacity:.85;overflow-wrap:anywhere}
.blk.is-overlap{box-shadow:inset 0 0 0 2px rgba(200,40,20,.55)}
.blk.is-overlap::before{content:"겹침";position:absolute;right:4px;top:3px;font-size:9px;background:rgba(200,40,20,.85);color:#fff;border-radius:4px;padding:0 3px}
.blk.is-drag{z-index:20;transform:scale(1.03);box-shadow:0 18px 30px -10px rgba(0,0,0,.45);cursor:grabbing;transition:none;left:3px !important;width:auto !important;right:3px}
.blk.is-press{transform:scale(.97)}
.blk.is-clip{border-bottom-left-radius:0;border-bottom-right-radius:0}
.rs{position:absolute;left:0;right:0;bottom:0;height:12px;cursor:ns-resize;touch-action:none;display:flex;align-items:center;justify-content:center}
.rs::after{content:"";width:18px;height:3px;border-radius:2px;background:rgba(0,0,0,.28)}
.board[data-theme="midnight"] .blk{color:#101114}
.drag-tip{position:fixed;z-index:1000;pointer-events:none;background:#1c1c1a;color:#fff;font-family:var(--mono);font-size:12px;padding:4px 8px;border-radius:6px;transform:translate(-50%,-140%)}
body.is-dragging{cursor:grabbing;-webkit-user-select:none;user-select:none}
.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(460px,calc(100vw - 24px));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 20px;display:flex;flex-direction:column;gap:12px}
.dlg-inner h3{margin:0}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.day-pick{display:flex;gap:5px;flex-wrap:wrap}
.day-pick label{position:relative}
.day-pick input{position:absolute;opacity:0;pointer-events:none}
.day-pick span{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;border:1px solid var(--line-2);font-size:13.5px;color:var(--ink-2);cursor:pointer;background:#fff}
.day-pick input:checked + span{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:700}
.day-pick label:has(input:focus-visible) span{outline:2px solid var(--accent);outline-offset:2px}
.colors{display:flex;gap:7px;flex-wrap:wrap}
.colors button{width:30px;height:30px;border-radius:50%;border:1px solid rgba(0,0,0,.1);background:var(--c);cursor:pointer}
.colors button[aria-checked="true"]{box-shadow:0 0 0 2px #fff,0 0 0 4px var(--ink)}
.form-err{margin:0;font-size:12.5px;color:#d9442f;min-height:0}
.form-err:empty{display:none}
.dlg-foot{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.dlg-foot .sp{flex:1}

.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:#ffb3a3;font-weight:700;cursor:pointer;padding:0}

@media (max-width:640px){
  :root{--hour:50px}
  .topbar{padding:14px 16px}
  .wrap{padding:14px 16px 32px}
  .settings{padding:12px;gap:12px}
  .board{padding:12px 6px 8px}
  .grid{grid-template-columns:32px repeat(var(--cols),minmax(0,1fr))}
  .tlabel{right:3px;font-size:9.5px}
  .dh{font-size:12px;padding:6px 0}
  .dh small{display:none}
  .blk{left:1px;right:1px;padding:3px 3px 10px;border-radius:6px;font-size:10.5px}
  .blk b{font-size:11px}
  .blk .bt,.blk .bm{display:none}
  .blk .bp{font-size:9.5px}
  .save-group{margin-left:0;width:100%}
  .save-group .sel{flex:1}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}

/* 다크 모드 (인쇄는 라이트 그대로) — 시간표 보드는 고른 테마(저장 이미지와 같은 모양) 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:#26252d; --hover:#2a2932; --soft:#2a2932; --track:#34333d;
  }
  :root[data-theme="dark"] .btn{background:var(--panel)}
  :root[data-theme="dark"] .btn:hover{background:var(--hover)}
  :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--accent{background:var(--accent);color:var(--bg)}
  :root[data-theme="dark"] .btn--danger{color:#ff7a66;border-color:rgba(255,122,102,.4)}
  :root[data-theme="dark"] .text-input:focus{box-shadow:0 0 0 3px rgba(255,255,255,.08)}
  :root[data-theme="dark"] .settings{background:var(--panel)}
  :root[data-theme="dark"] .seg input:checked + span{background:var(--line-2);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .theme span{border-color:rgba(255,255,255,.14)}
  :root[data-theme="dark"] .theme input:checked + span{box-shadow:0 0 0 2px var(--panel),0 0 0 4px var(--ink)}
  :root[data-theme="dark"] .warn{color:#f2cd7a;background:rgba(240,185,60,.12)}
  :root[data-theme="dark"] .board-wrap{box-shadow:0 0 0 1px var(--line),0 18px 40px -26px rgba(0,0,0,.8)}
  :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"] .day-pick input:not(:checked) + span{background:var(--panel)}
  :root[data-theme="dark"] .day-pick input:checked + span{color:var(--bg)}
  :root[data-theme="dark"] .colors button[aria-checked="true"]{box-shadow:0 0 0 2px var(--panel),0 0 0 4px var(--ink)}
  :root[data-theme="dark"] .form-err{color:#ff7a66}
  :root[data-theme="dark"] .toast{color:var(--bg)}
  :root[data-theme="dark"] .toast button{color:#d9442f}
}