:root {
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
  padding-bottom: 90px;
}
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2 { margin: 0; }
small { color: var(--muted); font-weight: normal; }

/* ---------- Barre supérieure ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  max-width: 1400px; margin: 0 auto;
}
.topbar h1 { font-size: 1.25rem; }
.topbar-actions { display: flex; gap: 8px; }
.tabs {
  display: inline-flex; background: #f3f4f6; border-radius: 999px; padding: 3px; gap: 2px;
}
.tab {
  border: none; background: transparent; border-radius: 999px; padding: 5px 14px; cursor: pointer;
  font-size: .9rem; color: var(--muted); display: inline-flex; align-items: center; gap: 6px;
}
.tab.active { background: #fff; color: var(--text); box-shadow: var(--shadow); font-weight: 500; }
.tab-count {
  background: var(--border); color: var(--text); border-radius: 999px; font-size: .72rem;
  padding: 0 6px; line-height: 1.5;
}
.tab.active .tab-count { background: var(--text); color: #fff; }
.filters {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  max-width: 1400px; margin: 10px auto 0;
}
.filters input[type=search] { flex: 1 1 180px; min-width: 140px; }
.filters select, .filters input {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; background: #fff;
}
.check { display: flex; align-items: center; gap: 6px; font-size: .9rem; white-space: nowrap; }
.chips {
  display: flex; flex-wrap: wrap; gap: 6px;
  max-width: 1400px; margin: 8px auto 0;
}
.chip {
  border: 1px solid var(--border); background: #fff; border-radius: 999px;
  padding: 3px 10px; font-size: .8rem; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
}
.chip .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.chip.active { background: var(--text); color: #fff; border-color: var(--text); }
.chip .count { color: var(--muted); }
.chip.active .count { color: #d1d5db; }

/* ---------- Boutons ---------- */
.btn {
  border: 1px solid var(--border); background: #fff; border-radius: 8px;
  padding: 7px 14px; cursor: pointer; white-space: nowrap;
}
.btn:hover { background: #f9fafb; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: transparent; }
.btn-icon {
  border: none; background: transparent; cursor: pointer; padding: 4px 6px;
  border-radius: 6px; color: var(--muted); font-size: .95rem; line-height: 1;
}
.btn-icon:hover { background: #f3f4f6; color: var(--text); }
.btn-icon.danger:hover { color: var(--danger); background: #fef2f2; }

.fab {
  display: none;
  position: fixed; right: 18px; bottom: 18px; z-index: 20;
  width: 56px; height: 56px; border-radius: 50%; border: none;
  background: var(--primary); color: #fff; font-size: 2rem; line-height: 1;
  box-shadow: 0 6px 16px rgba(37,99,235,.4); cursor: pointer;
}

/* ---------- Tableau des catégories ---------- */
/* Disposition en maçonnerie : colonnes remplies par JS (cadre -> colonne la moins haute) */
.board {
  max-width: 1400px; margin: 16px auto; padding: 0 16px;
  display: flex; gap: 16px; align-items: flex-start;
}
.board .col { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.empty {
  flex: 1 1 100%; text-align: center; color: var(--muted); padding: 60px 20px;
}
.group {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  border-top: 4px solid var(--muted); overflow: hidden;
}
.group-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
}
.group-head h2 { font-size: 1rem; display: flex; align-items: center; gap: 8px; min-width: 0; }
.group-head .head-actions { display: flex; align-items: center; gap: 2px; flex-shrink: 0; }
.group-head .btn-icon { opacity: 0; transition: opacity .15s; }
.group-head .btn-icon.add { opacity: 1; font-size: 1.15rem; font-weight: 600; padding: 2px 8px; }
.group-head .btn-icon.add:hover { background: #dbeafe; color: var(--primary); }
.group:hover .group-head .btn-icon, .group-head .btn-icon:focus-visible { opacity: 1; }
@media (hover: none) { .group-head .btn-icon { opacity: .6; } .group-head .btn-icon.add { opacity: 1; } }
.group-head .count { color: var(--muted); font-weight: normal; font-size: .85rem; }
.group ul { list-style: none; margin: 0; padding: 0; }

/* ---------- Archives ---------- */
.archive { border-top-color: #9ca3af; }
.archive summary { list-style: none; cursor: pointer; }
.archive summary::-webkit-details-marker { display: none; }
.archive summary .group-head { border-bottom: none; }
.archive[open] summary .group-head { border-bottom: 1px solid var(--border); }
.archive .caret { color: var(--muted); font-size: .8rem; transition: transform .15s; margin-right: 2px; }
.archive[open] .caret { transform: rotate(90deg); }
.archive .sub { color: var(--muted); font-size: .8rem; font-weight: normal; margin-left: 24px; }
.archive .group-head { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2px 8px; }
.archive .group-head .actions { display: flex; align-items: center; gap: 4px; }
.archive .sub { grid-column: 1 / -1; }
.archive .group-head .btn { padding: 4px 10px; font-size: .85rem; }
.archive .task { grid-template-columns: auto 1fr; opacity: .85; }
.archive .task.child { padding-left: calc(14px + var(--depth, 1) * 22px); }
.archive-empty { flex: 1 1 100%; text-align: center; color: var(--muted); padding: 60px 20px; }
.archive-empty p { margin: 6px 0; }

/* ---------- Tâche ---------- */
.task {
  display: grid; grid-template-columns: auto auto 1fr auto; gap: 10px; align-items: start;
  padding: 10px 8px 10px 6px; border-bottom: 1px solid var(--border);
  position: relative;
}
.task .handle {
  cursor: grab; color: #c4c8d0; user-select: none; touch-action: none;
  padding: 2px 4px; margin-top: 1px; font-size: 1rem; line-height: 1; letter-spacing: -2px;
}
.task .handle:hover { color: var(--muted); }
.task.dragging { opacity: .35; }
.task.drop-before::before, .task.drop-after::after {
  content: ""; position: absolute; left: 8px; right: 8px; height: 3px;
  background: var(--primary); border-radius: 2px; z-index: 1;
}
.task.drop-before::before { top: -2px; }
.task.drop-after::after { bottom: -2px; }
.task.drop-inside { box-shadow: inset 0 0 0 2px var(--primary); background: #eff6ff; border-radius: 6px; }
.group.drop-group { box-shadow: 0 0 0 3px var(--primary); }
.group .empty-group {
  padding: 16px 12px; margin: 10px; color: var(--muted); font-size: .85rem; text-align: center;
  border: 2px dashed transparent; border-radius: 8px; /* bordure toujours presente : pas de decalage de mise en page pendant le glisser */
}
body.is-dragging .group .empty-group { border-color: var(--border); }
.drag-ghost {
  position: fixed; z-index: 50; pointer-events: none; max-width: 260px;
  background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px;
  box-shadow: 0 8px 20px rgba(0,0,0,.2); font-size: .9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.drag-ghost small { display: block; color: var(--muted); font-size: .72rem; }
body.is-dragging { cursor: grabbing; user-select: none; }
.task:last-child { border-bottom: none; }
.task.child { padding-left: calc(6px + var(--depth, 1) * 22px); background: #fafafa; }
.task.child .title::before { content: "\2933  "; color: var(--muted); }
.task.done .title { text-decoration: line-through; color: var(--muted); }
.task.done { opacity: .7; }
.task.blocked { background: #fffbeb; }
.task.waiting { background: #fff7ed; }
.task.doing { background: #f8fbff; }
.task input[type=checkbox] {
  width: 20px; height: 20px; margin-top: 2px; cursor: pointer; accent-color: var(--ok);
}
.task input[type=checkbox]:disabled { cursor: not-allowed; opacity: .4; }
.task .body { min-width: 0; }
.task .title { font-weight: 500; overflow-wrap: anywhere; }
.task .badges {
  display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; font-size: .78rem; align-items: center;
}
.badge {
  border-radius: 6px; padding: 1px 7px; background: #f3f4f6; color: #374151; white-space: nowrap;
}
.badge.status {
  cursor: pointer; border: 1px solid transparent; font-weight: 500;
  display: inline-flex; align-items: center; gap: 4px;
}
.badge.status:hover { filter: brightness(.95); border-color: currentColor; }
.badge.s-a_faire { background: #f1f5f9; color: #475569; }
.badge.s-en_cours { background: #dbeafe; color: #1d4ed8; }
.badge.s-en_attente { background: #ffedd5; color: #9a3412; }
.badge.s-termine { background: #dcfce7; color: #15803d; }
.badge.p-majeur { background: #fee2e2; color: #991b1b; font-weight: 600; }
.badge.p-normal { background: #dbeafe; color: #1e40af; }
.badge.p-mineur { background: #f3f4f6; color: #4b5563; }
.badge.due { background: #ecfdf5; color: #065f46; }
.badge.due.soon { background: #fef3c7; color: #92400e; }
.badge.due.late { background: #fee2e2; color: #991b1b; font-weight: 600; }
.badge.lock { background: #fef3c7; color: #92400e; }
.badge.cat { color: #fff; }
.task .notes {
  margin: 6px 0 0; font-size: .85rem; color: #4b5563; white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.task .meta { font-size: .72rem; color: var(--muted); margin-top: 4px; }
.task .actions { display: flex; gap: 2px; }

/* ---------- Modales ---------- */
.modal {
  position: fixed; inset: 0; z-index: 30;
  background: rgba(17,24,39,.5); display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.modal[hidden] { display: none; }
.modal-card {
  background: var(--card); border-radius: 14px; width: 100%; max-width: 560px;
  max-height: calc(100vh - 32px); overflow-y: auto; padding: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,.3);
}
.modal-card h2 { font-size: 1.15rem; margin-bottom: 12px; }
.modal-card label { display: block; font-size: .85rem; font-weight: 500; margin-bottom: 12px; }
.modal-card label > input, .modal-card label > select, .modal-card label > textarea {
  display: block; width: 100%; margin-top: 4px;
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: #fff;
  font-weight: normal;
}
.modal-card textarea { resize: vertical; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.inline { display: flex; gap: 8px; align-items: center; margin-top: 4px; }
.inline input[type=text] { flex: 1; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; }
.inline input[type=color] { width: 40px; height: 38px; padding: 2px; border: 1px solid var(--border); border-radius: 8px; background: #fff; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; }
.meta { color: var(--muted); font-size: .8rem; margin: 0 0 8px; }
.error { color: var(--danger); font-size: .85rem; margin: 0 0 8px; }

.cat-list { list-style: none; padding: 0; margin: 12px 0; }
.cat-list li {
  display: flex; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--border);
}
.cat-list input[type=text] { flex: 1; padding: 6px 8px; border: 1px solid transparent; border-radius: 6px; }
.cat-list input[type=text]:hover, .cat-list input[type=text]:focus { border-color: var(--border); }
.cat-list input[type=color] { width: 30px; height: 30px; padding: 1px; border: 1px solid var(--border); border-radius: 6px; background: #fff; }
.cat-list .count { color: var(--muted); font-size: .8rem; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 40;
  background: #111827; color: #fff; padding: 10px 16px; border-radius: 10px;
  font-size: .9rem; box-shadow: 0 8px 20px rgba(0,0,0,.3); max-width: calc(100vw - 32px);
}
.toast.err { background: var(--danger); }

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .board { padding: 0 10px; }
  .topbar { padding: 8px 10px; }
  .topbar h1 { font-size: 1.05rem; }
  #btn-new { display: none; }
  .fab { display: block; }
  body.view-archives .fab { display: none; }
  .topbar-inner { flex-wrap: wrap; }
  .tabs { order: 3; width: 100%; justify-content: stretch; }
  .tab { flex: 1; justify-content: center; }
  .row { grid-template-columns: 1fr; gap: 0; }
  .filters select { flex: 1 1 45%; }
  .task { padding: 10px 6px 10px 4px; }
  .task.child { padding-left: calc(4px + var(--depth, 1) * 16px); }
  .modal { padding: 0; align-items: flex-end; }
  .modal-card { border-radius: 14px 14px 0 0; max-height: 92vh; }
}