:root{
  --bg:#0f172a;         /* dark base */
  --panel:#0b1225;
  --muted:#778399;
  --text:#dbe1ee;
  --card:#111a33;
  --primary:#22c55e;
  --primary-ink:#052e16;
  --danger:#ef4444;
  --shadow: 0 10px 24px rgba(2,6,23,.25);
  --accent:#38bdf8;
}

:root.light{
  --bg:#f6f7fb;
  --panel:#ffffff;
  --muted:#6b7280;
  --text:#0f172a;
  --card:#ffffff;
  --primary:#16a34a;
  --primary-ink:#052e16;
  --danger:#dc2626;
  --shadow: 0 6px 18px rgba(15,23,42,.08);
  --accent:#0ea5e9;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--text);
}

.topbar{
  display:flex; gap:16px; align-items:center; justify-content:space-between;
  padding:14px 18px; background:var(--panel); box-shadow: var(--shadow); position:sticky; top:0; z-index:10;
}
.brand{display:flex; align-items:center; gap:10px; font-weight:700; letter-spacing:.4px}
.brand i{color:var(--primary)}
.controls{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.controls input[type="search"], .controls select{
  background:var(--card); color:var(--text); border:1px solid transparent; border-radius:10px; padding:10px 12px;
}
.controls input[type="search"]{min-width:220px}
.icon-btn{
  background:var(--card); color:var(--text); border:1px solid transparent; border-radius:10px; padding:10px; cursor:pointer;
}
.btn{border:none; border-radius:12px; padding:10px 14px; cursor:pointer; font-weight:600}
.btn.primary{background:var(--primary); color:white}
.btn.ghost{background:transparent; color:var(--muted); border:1px solid #334155}
.btn.full{width:100%}
.btn .fa-solid{margin-right:6px}

.batch-bar{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:10px 18px; background:var(--panel); border-top:1px solid #1f2a44; border-bottom:1px solid #1f2a44;
}
.batch-bar.hidden{display:none}
.batch-actions{display:flex; gap:10px; align-items:center}
.dropdown{position:relative}
.dropdown .menu{
  position:absolute; top:110%; left:0; background:var(--panel); border:1px solid #1f2a44; border-radius:10px; padding:6px; display:none;
}
.dropdown:hover .menu{display:block}
.dropdown .menu button{display:block; width:160px; background:transparent; color:var(--text); border:none; text-align:left; padding:8px 10px; cursor:pointer}

.layout{display:grid; grid-template-columns:320px 1fr; gap:18px; padding:18px; max-width:1200px; margin:0 auto}
.panel{background:var(--panel); border-radius:14px; padding:16px; box-shadow: var(--shadow)}
.content{min-height:60vh}

.form label{display:block; font-size:.92rem; margin:10px 0}
.form input[type="text"], .form input[type="date"], .form input[type="datetime-local"], .form textarea, .form select{
  width:100%; background:var(--card); color:var(--text); border:1px solid transparent; padding:10px 12px; border-radius:10px;
}
.form textarea{resize:vertical}
.row{display:grid; grid-template-columns:1fr 1fr; gap:12px}

.legend{margin-top:16px; color:var(--muted)}
.muted{color:var(--muted)}
.prio.dot{display:inline-block; width:10px; height:10px; border-radius:50%; margin-right:6px}
.prio.high{background:#f43f5e}
.prio.med{background:#eab308}
.prio.low{background:#22c55e}

/* Task list */
.tasks{list-style:none; margin:0; padding:0; display:grid; gap:12px}
.task{
  background:var(--panel); border:1px solid #1f2a44; border-radius:14px; padding:10px 12px;
  display:grid; grid-template-columns:auto 1fr auto; gap:12px; align-items:flex-start;
}
:root.light .task{border:1px solid #e5e7eb}
.task.dragging{opacity:.6; outline:2px dashed var(--muted)}
.chk{margin-top:4px}
.task h4{margin:0 0 6px 0; font-size:1rem}
.meta{display:flex; flex-wrap:wrap; gap:8px; color:var(--muted); font-size:.85rem}
.badge{
  display:inline-flex; align-items:center; gap:6px; padding:4px 8px; border-radius:999px; background:var(--card);
}
.badge i{font-size:.9rem}
.badge.prio-high{color:#f43f5e}
.badge.prio-med{color:#eab308}
.badge.prio-low{color:#22c55e}
.actions{display:flex; gap:6px; align-items:center}
.actions .icon{background:var(--card); border:none; border-radius:10px; padding:8px; cursor:pointer; color:var(--text)}
.actions .icon.danger{color:var(--danger)}
.notes{margin:6px 0 0 0; color:var(--muted); white-space:pre-wrap}

.selectbox{margin-right:4px}

/* Subtasks in modal */
.subtasks{margin-top:10px; background:var(--card); border-radius:10px; padding:10px}
.subtasks-header{display:flex; align-items:center; justify-content:space-between; margin-bottom:8px}
#subtaskList{list-style:none; padding:0; margin:0; display:grid; gap:8px}
.subtask-row{display:grid; grid-template-columns:auto 1fr auto; gap:8px; align-items:center}
.subtask-row input[type="text"]{background:transparent; border:1px dashed #334155}

/* Empty */
.empty{opacity:.6; text-align:center; padding:24px}

/* Modal */
dialog{border:none; border-radius:16px; padding:0; max-width:620px; width:92%; background:var(--panel); color:var(--text); box-shadow: var(--shadow)}
.modal-form{padding:16px}
.modal-header{display:flex; align-items:center; justify-content:space-between}
.modal-actions{display:flex; justify-content:flex-end; gap:10px; padding-top:8px}

/* Board / Kanban */
.board{display:grid; grid-template-columns:repeat(3, 1fr); gap:16px}
.col{background:var(--panel); border-radius:14px; padding:10px; box-shadow:var(--shadow); min-height:50vh}
.col-header{font-weight:700; margin-bottom:8px; display:flex; align-items:center; gap:8px}
.board-col{min-height:40vh; list-style:none; padding:0; margin:0; display:grid; gap:10px}
.board .task{cursor:grab}
.board .task:active{cursor:grabbing}

/* Footer */
.footer{padding:16px; text-align:center; color:var(--muted)}

/* Hidden toggle */
.hidden{display:none}

/* Responsive */
@media (max-width: 1024px){
  .layout{grid-template-columns:1fr}
  .panel{order:2}
  .content,.board{order:1}
  .controls{gap:8px}
  .board{grid-template-columns:1fr}
}