:root {
  color-scheme: light;
  --bg: #eef2f7;
  --panel: #ffffff;
  --panel-2: #f1f5f9;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-2: #1d4ed8;
  --danger: #dc2626;
  --ok: #059669;
  --border: #e2e8f0;
  --radius: 10px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
}
.hidden { display: none !important; }

/* ---- Top bar ---- */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; background: var(--panel);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20;
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 16px; margin-right: 8px; }
.nav { display: flex; align-items: center; gap: 6px; flex: 1; flex-wrap: wrap; }
.sep { width: 1px; height: 22px; background: var(--border); margin: 0 4px; }
.user { display: flex; align-items: center; gap: 8px; color: var(--muted); }

select, input[type=text], input[type=number], input[type=date], input:not([type]) {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 7px; padding: 7px 9px; font-size: 13px; outline: none;
}
select:focus, input:focus { border-color: var(--accent); }

.btn {
  background: var(--panel-2); color: var(--text); border: 1px solid var(--border);
  border-radius: 7px; padding: 7px 12px; cursor: pointer; font-size: 13px;
}
.btn:hover { background: #e2e8f0; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-2); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.viewbtn { padding: 7px 10px; }
.viewbtn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---- Main ---- */
main { padding: 16px; }
.empty { color: var(--muted); padding: 24px; }
#gantt { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: auto; }

/* ---- Cards / dashboard ---- */
.cards { display: flex; gap: 12px; flex-wrap: wrap; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 22px; min-width: 120px; text-align: center;
}
.card b { display: block; font-size: 28px; }
.card span { color: var(--muted); }
.card.danger b { color: var(--danger); }
.ms { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; margin: 6px 0; }

/* ---- Modal ---- */
.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; width: 440px; max-width: 92vw; display: flex; flex-direction: column; gap: 10px;
  box-shadow: 0 12px 40px rgba(15,23,42,.25);
}
.modal-card h3 { margin: 0 0 4px; }
.modal-card label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.modal-card label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
.actions { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.actions .spacer { flex: 1; }

/* ---- Toast ---- */
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 10px 18px; border-radius: 8px; z-index: 60; box-shadow: 0 6px 20px rgba(0,0,0,.4);
}
.toast.error { border-color: var(--danger); color: #b91c1c; }

/* ---- Login ---- */
.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 28px; width: 320px; display: flex; flex-direction: column; gap: 12px;
}
.login-card h2 { margin: 0 0 6px; text-align: center; }
.login-card .error { color: #b91c1c; background: rgba(220,38,38,.08); border: 1px solid var(--danger);
  border-radius: 8px; padding: 8px; font-size: 12px; }

/* Sub-task list (task modal) + Gantt popup action */
.muted { color: var(--muted); }
.subtask-label { font-size: 12px; color: var(--muted); }
.subtask-list { list-style: none; margin: 4px 0 0; padding: 0; max-height: 150px; overflow: auto;
  border: 1px solid var(--border); border-radius: 8px; background: var(--panel); }
.subtask-item { display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 7px 10px; border-bottom: 1px solid var(--border); cursor: pointer; }
.subtask-item:last-child { border-bottom: none; }
.subtask-item:hover { background: var(--panel-2); }
.subtask-item .st-name { font-weight: 500; color: var(--text); }
.subtask-item .st-meta { font-size: 12px; color: var(--muted); white-space: nowrap; }
.popup-action { color: var(--accent); cursor: pointer; font-size: 12px; text-decoration: none; }
.popup-action:hover { text-decoration: underline; }

/* Dashboard task table */
.table-wrap { overflow: auto; max-height: 62vh; border: 1px solid var(--border);
  border-radius: 10px; background: var(--panel); }
.task-table { border-collapse: collapse; width: 100%; font-size: 13px; }
.task-table th, .task-table td { padding: 8px 10px; text-align: left;
  border-bottom: 1px solid var(--border); white-space: nowrap; }
.task-table thead th { background: var(--panel-2); color: var(--muted); font-weight: 600;
  position: sticky; top: 0; z-index: 1; }
.task-table tbody tr:last-child td { border-bottom: none; }
.task-table tbody tr:hover { background: var(--panel-2); }
.task-table td.name { white-space: normal; min-width: 160px; }
.btn.sm { padding: 4px 9px; font-size: 12px; }

/* Dashboard filters / sortable headers */
.dash-controls { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 14px 0; }
.dash-new { display: flex; gap: 8px; align-items: center; margin: 10px 0 0; }
.dash-new .muted { font-size: 12px; }
.dash-controls input { min-width: 180px; flex: 1; max-width: 280px; }
.sm-count { font-size: 12px; margin-left: auto; white-space: nowrap; }
.task-table th[data-sort] { cursor: pointer; user-select: none; }
.task-table th[data-sort]:hover { color: var(--accent); }

/* Custom Gantt hover tooltip */
.task-tooltip { position: absolute; z-index: 40; background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 11px; font-size: 12px;
  box-shadow: 0 8px 22px rgba(15,23,42,.18); pointer-events: none; min-width: 170px; max-width: 250px; }
.task-tooltip .tt-name { font-weight: 600; margin-bottom: 5px; }
.task-tooltip .tt-row { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); line-height: 1.5; }
.task-tooltip .tt-row b { color: var(--text); font-weight: 500; text-align: right; }
.task-tooltip .tt-parent { color: var(--accent); font-size: 11px; margin-top: 4px; }

/* Dashboard section headers + project color dot */
.dash-section-head { display: flex; align-items: center; gap: 10px; margin-top: 22px; }
.dash-section-head h3 { margin: 0; }
.color-dot { display: inline-block; width: 12px; height: 12px; border-radius: 3px;
  margin-right: 7px; vertical-align: -1px; border: 1px solid rgba(15,23,42,.15); }