:root {
  --bg: #f4f6f8; --surface: #ffffff; --surface-2: #f8fafc; --border: #dde3ea; --border-strong: #c4ccd6;
  --text: #1c2430; --muted: #5c6878; --primary: #1f4e8c; --primary-soft: #e6eef8; --danger: #b42318;
  --danger-soft: #fdecea; --ok: #1d7a46; --ok-soft: #e5f4ec; --warn: #b45309; --warn-soft: #fdf3e2;
  --s-a_faire: #94a3b8; --s-en_cours: #2563eb; --s-bloque: #dc2626; --s-termine: #16a34a; --s-annule: #6b7280;
  --radius: 6px; --shadow: 0 8px 24px rgba(15, 23, 42, .14);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; font-size: 14px; color: var(--text);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary); }
h2 { font-size: 18px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 16px 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.right { margin-left: auto; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; }

/* boutons et champs */
.btn { border: 1px solid var(--border-strong); background: var(--surface); padding: 6px 12px; border-radius: var(--radius);
  cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); border-color: #e7b4ae; }
.btn.ok { color: var(--ok); border-color: #a9d8bd; }
.btn.small { padding: 3px 8px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }
.link { background: none; border: 0; color: var(--primary); cursor: pointer; padding: 0; text-align: left; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=date], select, textarea {
  border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 6px 8px; background: #fff; width: 100%; }
textarea { min-height: 70px; resize: vertical; }
label.field { display: block; margin-bottom: 10px; }
label.field > span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 12px; }

/* connexion */
.login { max-width: 380px; margin: 12vh auto; background: var(--surface); padding: 28px; border-radius: 10px;
  border: 1px solid var(--border); box-shadow: var(--shadow); }
.login .logo { display: block; height: 52px; margin: 0 auto 18px; }
.login h1 { font-size: 20px; margin: 0 0 4px; }
.error { color: var(--danger); margin: 8px 0; }

/* en-tête */
header.top { background: #13294b; color: #fff; padding: 0 16px; display: flex; align-items: center; gap: 16px; height: 52px; }
header.top .brand { font-weight: 600; letter-spacing: .2px; display: flex; align-items: center; gap: 10px; white-space: nowrap; }
header.top .logo { height: 32px; background: #fff; padding: 3px 6px; border-radius: 4px; }
header.top select { width: auto; max-width: 340px; background: #1f3b66; color: #fff; border-color: #36598f; }
header.top .user { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 13px; }
header.top .btn { background: transparent; color: #fff; border-color: #36598f; }
header.top .btn:hover { background: #1f3b66; }
.badge { display: inline-block; padding: 1px 7px; border-radius: 10px; font-size: 11px; font-weight: 600;
  background: var(--primary-soft); color: var(--primary); }
.badge.alert { background: #f59e0b; color: #1c1917; }
nav.tabs { background: var(--surface); border-bottom: 1px solid var(--border); padding: 0 16px; display: flex; gap: 2px;
  overflow-x: auto; }
nav.tabs button { border: 0; background: none; padding: 12px 14px; cursor: pointer; border-bottom: 2px solid transparent;
  color: var(--muted); white-space: nowrap; }
nav.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
main { padding: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 16px; }

/* tableaux */
table.data { width: 100%; border-collapse: collapse; background: var(--surface); }
table.data th { text-align: left; font-size: 12px; font-weight: 600; color: var(--muted); padding: 8px; border-bottom: 1px solid var(--border);
  background: var(--surface-2); position: sticky; top: 0; z-index: 1; }
table.data td { padding: 7px 8px; border-bottom: 1px solid #edf0f4; vertical-align: top; }
table.data tr.clickable { cursor: pointer; }
table.data tr.clickable:hover td { background: #f3f7fc; }
table.data tr.phase td { background: #f8fafc; font-weight: 600; }
.table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: 8px; max-height: calc(100vh - 210px); }
.toggle { display: inline-block; width: 16px; cursor: pointer; color: var(--muted); user-select: none; }
.type-icon { display: inline-block; width: 16px; text-align: center; color: var(--muted); }

/* statuts, étiquettes */
.chip { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; white-space: nowrap; }
.st-a_faire { background: #eef1f5; color: #475569; }
.st-en_cours { background: #e3ecfd; color: #1d4ed8; }
.st-bloque { background: var(--danger-soft); color: var(--danger); }
.st-termine { background: var(--ok-soft); color: var(--ok); }
.st-annule { background: #eceff3; color: #6b7280; text-decoration: line-through; }
.cs-en_attente { background: var(--warn-soft); color: var(--warn); }
.cs-approuve { background: var(--ok-soft); color: var(--ok); }
.cs-rejete { background: var(--danger-soft); color: var(--danger); }
.label { display: inline-block; padding: 1px 7px; border-radius: 4px; font-size: 11px; color: #fff; margin: 1px 2px 1px 0; }
.late { color: var(--danger); font-weight: 600; }
.progress { width: 60px; height: 6px; background: #e5e9ef; border-radius: 3px; overflow: hidden; display: inline-block; vertical-align: middle; }
.progress > i { display: block; height: 100%; background: var(--primary); }

/* tiroir latéral et modales */
.overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, .35); z-index: 20; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(720px, 100vw); background: var(--surface); z-index: 21;
  box-shadow: var(--shadow); display: flex; flex-direction: column; }
.drawer .head { padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.drawer .head h2 { margin: 0; font-size: 16px; }
.drawer .body { padding: 16px 18px; overflow: auto; flex: 1; }
.drawer .foot { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; gap: 8px; }
.modal { position: fixed; top: 8vh; left: 50%; transform: translateX(-50%); width: min(560px, 94vw); max-height: 84vh; overflow: auto;
  background: var(--surface); border-radius: 10px; z-index: 31; box-shadow: var(--shadow); padding: 20px; }
.modal-overlay { z-index: 30; }
.subtabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: -4px 0 14px; }
.subtabs button { border: 0; background: none; padding: 8px 10px; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; }
.subtabs button.active { color: var(--primary); border-bottom-color: var(--primary); }

/* sélecteur multiple */
.picker { border: 1px solid var(--border-strong); border-radius: var(--radius); background: #fff; }
.picker input.filter { border: 0; border-bottom: 1px solid var(--border); border-radius: var(--radius) var(--radius) 0 0; }
.picker .list { max-height: 160px; overflow: auto; padding: 4px 6px; }
.picker label { display: flex; gap: 6px; align-items: center; padding: 2px 0; cursor: pointer; }

/* commentaires */
.comment { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; }
.comment .meta { font-size: 12px; color: var(--muted); display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.comment .body { white-space: pre-wrap; margin: 6px 0; }
.comment .reviews { font-size: 12px; border-top: 1px dashed var(--border); padding-top: 6px; margin-top: 6px; }

/* tableau de bord */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 14px; }
.kpi .v { font-size: 26px; font-weight: 600; }
.kpi .l { color: var(--muted); font-size: 12px; }

/* Gantt */
.gantt-toolbar { margin-bottom: 10px; }
.gantt { display: flex; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); overflow: hidden;
  height: calc(100vh - 220px); }
.gantt .left { width: 330px; flex: none; border-right: 1px solid var(--border); overflow: hidden; }
.gantt .right { flex: 1; overflow: auto; position: relative; }
.gantt .hdr { height: 48px; border-bottom: 1px solid var(--border); background: var(--surface-2); }
.gantt .left .hdr { display: flex; align-items: flex-end; padding: 0 8px 6px; font-size: 12px; color: var(--muted); font-weight: 600; }
.gantt .grow-rows { position: relative; }
.gantt .lrow { height: 30px; display: flex; align-items: center; padding: 0 8px; border-bottom: 1px solid #f0f2f5;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer; font-size: 13px; }
.gantt .lrow:hover { background: #f3f7fc; }
.gantt .lrow.phase { font-weight: 600; }
.gantt .lrow .t { overflow: hidden; text-overflow: ellipsis; }
.gantt .scale { position: sticky; top: 0; z-index: 3; background: var(--surface-2); }
.gantt .scale div { position: absolute; font-size: 11px; color: var(--muted); border-left: 1px solid var(--border); padding-left: 4px;
  white-space: nowrap; overflow: hidden; }
.gantt .scale .top { top: 4px; height: 20px; font-weight: 600; color: var(--text); }
.gantt .scale .bot { top: 26px; height: 22px; padding-top: 3px; }
.gantt .gridline { position: absolute; top: 0; bottom: 0; border-left: 1px solid #f0f2f5; }
.gantt .rowline { position: absolute; left: 0; right: 0; height: 30px; border-bottom: 1px solid #f0f2f5; }
.gantt .today { position: absolute; top: 0; bottom: 0; border-left: 2px solid #ef4444; z-index: 2; }
.gantt .today span { position: absolute; top: 0; left: 3px; background: #ef4444; color: #fff; font-size: 10px; padding: 0 4px; border-radius: 3px; }
.gantt .bar { position: absolute; height: 16px; border-radius: 4px; cursor: pointer; z-index: 2; overflow: hidden;
  font-size: 11px; color: #fff; line-height: 16px; padding: 0 5px; white-space: nowrap; }
.gantt .bar > i { position: absolute; left: 0; top: 0; bottom: 0; background: rgba(255, 255, 255, .28); }
.gantt .bar.summary { height: 8px; border-radius: 0; background: #334155 !important; }
.gantt .bar.open { background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.25) 0 6px, transparent 6px 12px); }
.gantt .bar.late { outline: 2px solid var(--danger); outline-offset: 1px; }
.gantt .milestone { position: absolute; width: 14px; height: 14px; transform: rotate(45deg); z-index: 2; cursor: pointer; border: 2px solid #fff;
  box-shadow: 0 0 0 1px #334155; }
.gantt .mlabel { position: absolute; font-size: 11px; color: var(--muted); white-space: nowrap; z-index: 2; }
.gantt svg.deps { position: absolute; top: 0; left: 0; pointer-events: none; z-index: 1; }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 12px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: #1e293b; color: #fff; padding: 10px 16px;
  border-radius: 8px; z-index: 50; box-shadow: var(--shadow); max-width: 90vw; }
.toast.err { background: var(--danger); }
.notice { background: var(--warn-soft); border: 1px solid #f3d19e; color: #7c4a03; padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
.secret { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 16px; background: var(--surface-2); padding: 8px 12px;
  border: 1px dashed var(--border-strong); border-radius: 6px; user-select: all; }

@media (max-width: 760px) {
  .grid2, .grid3 { grid-template-columns: 1fr; }
  .gantt .left { width: 160px; }
  header.top .brand { display: none; }
  header.top { height: auto; flex-wrap: wrap; padding: 8px 12px; gap: 8px; }
  header.top select { max-width: 100%; }
  header.top .user { margin-left: 0; flex-wrap: wrap; }
  header.top .user .uname { display: none; }
  table.data td:first-child { min-width: 220px; }
}