:root {
  --bg: #f4f5f7; --panel: #fff; --text: #1f2937; --muted: #6b7280; --line: #e5e7eb;
  --primary: #2f5dd0; --danger: #c0392b;
  --open: #6b7280; --progress: #2f5dd0; --hold: #d98a00; --done: #1f9d57;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.4 system-ui, sans-serif; background: var(--bg); color: var(--text); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; border: 1px solid var(--line); background: var(--panel); border-radius: 6px; padding: 6px 12px; }
button.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }
input, select, textarea { width: 100%; padding: 7px 9px; border: 1px solid #cfd4dc; border-radius: 6px; background: #fff; }
textarea { min-height: 90px; resize: vertical; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 3px; }
.hidden { display: none !important; }
.error { color: var(--danger); font-size: 14px; min-height: 1.2em; margin-top: 8px; }

.login { max-width: 360px; margin: 12vh auto; background: var(--panel); padding: 28px; border-radius: 10px; box-shadow: 0 2px 12px rgba(0,0,0,.08); }
.login h1 { margin: 0 0 8px; font-size: 22px; }
.login button { width: 100%; margin-top: 14px; padding: 9px; }

header.top { display: flex; align-items: center; gap: 12px; padding: 10px 18px; background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap; }
header.top h1 { font-size: 18px; margin: 0 12px 0 0; }
header.top .spacer { flex: 1; }
header.top .who { color: var(--muted); font-size: 14px; }
nav button.active { background: #e8eefc; border-color: var(--primary); }

.toolbar { display: flex; align-items: center; gap: 10px; padding: 12px 18px; flex-wrap: wrap; }
.filter { position: relative; }
.filter .menu { position: absolute; top: 100%; left: 0; z-index: 20; margin-top: 4px; min-width: 240px; max-height: 320px; overflow: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 6px 20px rgba(0,0,0,.12); padding: 6px; }
.filter .menu label { display: flex; gap: 8px; align-items: center; margin: 0; padding: 5px 8px; color: var(--text); font-size: 14px; border-radius: 4px; cursor: pointer; }
.filter .menu label:hover { background: var(--bg); }
.filter .menu input { width: auto; }
.filter .menu .actions { display: flex; gap: 8px; padding: 4px 8px 8px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.filter .menu .actions button { padding: 2px 8px; font-size: 13px; }

.board { display: grid; grid-template-columns: repeat(4, minmax(230px, 1fr)); gap: 14px; padding: 0 18px 24px; overflow-x: auto; align-items: start; }
.col { background: #ebedf1; border-radius: 10px; padding: 10px; min-height: 160px; border-top: 4px solid var(--open); }
.col[data-status="In Progress"] { border-top-color: var(--progress); }
.col[data-status="On Hold"] { border-top-color: var(--hold); }
.col[data-status="Completed"] { border-top-color: var(--done); }
.col.over { outline: 2px dashed var(--primary); }
.col h2 { font-size: 14px; margin: 2px 4px 10px; display: flex; justify-content: space-between; }
.col h2 .count { color: var(--muted); font-weight: normal; }
.card { background: var(--panel); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; box-shadow: 0 1px 2px rgba(0,0,0,.1); cursor: pointer; }
.card:hover { box-shadow: 0 2px 6px rgba(0,0,0,.18); }
.card .title { font-weight: 600; word-break: break-word; }
.card .meta { display: flex; justify-content: space-between; gap: 8px; margin-top: 8px; font-size: 13px; color: var(--muted); }
.card .due.overdue { color: var(--danger); font-weight: 600; }
.card[draggable="true"] { cursor: grab; }

.panel { max-width: 900px; margin: 18px auto; background: var(--panel); border-radius: 10px; padding: 18px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); font-size: 14px; }
.inline-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; align-items: end; margin-bottom: 18px; }
.inline-form label { margin-top: 0; }
.badge { font-size: 12px; padding: 2px 8px; border-radius: 10px; background: #e8eefc; color: var(--primary); }
.badge.off { background: #f3e3e1; color: var(--danger); }

.overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; justify-content: center; align-items: flex-start; overflow: auto; padding: 4vh 12px; z-index: 50; }
.modal { background: var(--panel); border-radius: 10px; width: 100%; max-width: 640px; padding: 20px; }
.modal h2 { margin: 0 0 4px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.modal .buttons { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.history { list-style: none; margin: 8px 0 0; padding: 0; border-left: 2px solid var(--line); }
.history li { padding: 4px 0 8px 12px; font-size: 14px; }
.history .when { color: var(--muted); font-size: 12px; }
@media (max-width: 600px) { .row2 { grid-template-columns: 1fr; } }

.panel.wide { max-width: 1100px; }
.list-head { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 14px; }
.list-head .spacer { flex: 1; }
th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
th.sortable:hover { background: var(--bg); }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--bg); }
td.overdue { color: var(--danger); font-weight: 600; }