:root {
  --bg: #1e1f22; --panel: #2b2d31; --col: #232428; --card: #313338; --line: #3f4147;
  --ink: #f2f3f5; --ink2: #b5bac1; --muted: #80848e; --accent: #5865f2; --late: #f23f43; --ok: #23a55a;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body { background: var(--bg); color: var(--ink); font: 14px/1.45 "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif; display: flex; flex-direction: column; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

.top { display: flex; align-items: center; gap: 16px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--panel); flex-wrap: wrap; }
.brand { font-weight: 800; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }
.tabs { display: flex; gap: 4px; }
.tabs button { background: none; border: 0; padding: 6px 12px; border-radius: 6px; color: var(--ink2); font-weight: 600; }
.tabs button[aria-selected="true"] { background: var(--card); color: var(--ink); }
.tools { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.tools input, .tools select { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; min-width: 0; }
.tools input { width: 160px; }
.primary { background: var(--accent); border: 0; border-radius: 6px; padding: 7px 14px; font-weight: 700; color: #fff; }

main { flex: 1; overflow: auto; padding: 14px 16px; }
.status { color: var(--ink2); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; }

/* 보드 */
.board { display: grid; grid-template-columns: repeat(5, minmax(200px, 1fr)); gap: 10px; min-height: 100%; align-items: start; }
.col { background: var(--col); border-radius: 10px; padding: 8px; min-height: 160px; border: 2px solid transparent; }
.col.over { border-color: var(--accent); }
.col h2 { font-size: 12px; text-transform: uppercase; color: var(--ink2); margin: 4px 6px 10px; display: flex; gap: 8px; align-items: center; }
.count { background: var(--card); border-radius: 10px; padding: 0 8px; color: var(--muted); }
.cards { display: grid; gap: 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px; cursor: pointer; }
.card:hover, .card:focus-visible { border-color: var(--accent); outline: none; }
.card.dragging { opacity: 0.4; }
.card.late { border-left: 3px solid var(--late); }
.ctitle { font-weight: 600; margin-bottom: 8px; overflow-wrap: anywhere; }
.cmeta { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 12px; }
.key { font-family: ui-monospace, Consolas, monospace; }
.due { margin-left: auto; }
.card.late .due { color: var(--late); font-weight: 700; }
.avatar { width: 22px; height: 22px; border-radius: 50%; background: var(--accent); color: #fff; display: inline-grid; place-items: center; font-size: 11px; font-weight: 700; }
.cmeta .due + .avatar { margin-left: 0; }
.cmeta .avatar:only-of-type { margin-left: auto; }

/* 캘린더 */
.cal-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.cal-head h2 { margin: 0 8px; font-size: 18px; min-width: 120px; text-align: center; }
.cal-head button { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 5px 12px; }
.grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.dow { background: var(--panel); text-align: center; padding: 6px; color: var(--ink2); font-size: 12px; font-weight: 700; }
.day { background: var(--col); min-height: 96px; padding: 4px; display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.day.empty { background: var(--bg); }
.day.today { background: #2f3350; }
.day.today .num { background: var(--accent); color: #fff; border-radius: 10px; padding: 0 6px; }
.num { font-size: 12px; color: var(--ink2); align-self: flex-start; }
.item { display: block; text-align: left; background: var(--card); border: 0; border-radius: 4px; padding: 2px 6px; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--ink); text-decoration: none; width: 100%; }
.item.event { background: #3c2f55; }
.item.late { box-shadow: inset 3px 0 var(--late); }
.nodue { margin-top: 14px; display: grid; gap: 6px; max-width: 520px; }
.nodue h3 { margin: 0 0 4px; font-size: 14px; color: var(--ink2); }

/* 요약 */
.summary { display: grid; gap: 14px; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.stat { background: var(--panel); border-radius: 10px; padding: 14px; display: grid; gap: 2px; }
.stat b { font-size: 26px; }
.stat span { color: var(--ink2); }
.panels { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 10px; }
.panel { background: var(--panel); border-radius: 10px; padding: 14px; }
.panel h3 { margin: 0 0 12px; font-size: 14px; }
.pie { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.donut { width: 150px; height: 150px; border-radius: 50%; display: grid; place-items: center; }
.hole { width: 96px; height: 96px; border-radius: 50%; background: var(--panel); display: grid; place-items: center; align-content: center; }
.hole b { font-size: 24px; }
.hole span { font-size: 11px; color: var(--ink2); }
.legend { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.legend li { display: flex; gap: 8px; align-items: center; }
.legend i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.legend b { margin-left: 12px; color: var(--ink2); }
.recent { margin: 0; padding-left: 0; list-style: none; display: grid; gap: 6px; }
.recent li { color: var(--ink2); overflow-wrap: anywhere; }
.when { font-family: ui-monospace, Consolas, monospace; color: var(--muted); font-size: 12px; }

/* 카드 창 */
dialog { background: var(--panel); color: var(--ink); border: 1px solid var(--line); border-radius: 12px; width: min(560px, 94vw); padding: 18px; }
dialog::backdrop { background: rgb(0 0 0 / 0.6); }
dialog h3 { margin: 0 0 12px; }
dialog form { display: grid; gap: 10px; }
dialog label { display: grid; gap: 4px; color: var(--ink2); font-size: 12px; }
dialog input, dialog textarea, dialog select { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 7px 9px; color: var(--ink); }
.row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.meta { color: var(--muted); font-size: 12px; margin: 0; }
.error { color: var(--late); margin: 0; }
.actions { display: flex; justify-content: flex-end; gap: 8px; }
.actions button:not(.primary) { background: none; border: 1px solid var(--line); border-radius: 6px; padding: 7px 14px; }

@media (max-width: 760px) {
  .board { grid-template-columns: repeat(5, 78vw); overflow-x: auto; scroll-snap-type: x mandatory; }
  .col { scroll-snap-align: start; }
  .stats, .panels, .row { grid-template-columns: 1fr 1fr; }
  .panels { grid-template-columns: 1fr; }
  .tools input { width: 110px; }
  .day { min-height: 64px; }
  .item { font-size: 10px; padding: 1px 3px; }
}