:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #e3e6ea;
  --text: #1a1d21;
  --muted: #6b7280;
  --accent: #0f766e;
  --accent-dark: #0d5b54;
  --pri-urgent: #b3261e;
  --pri-high: #c2410c;
  --pri-medium: #a16207;
  --pri-low: #3f6212;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }
/* The `hidden` attribute must win even over rules like `form label { display:block }`. */
[hidden] { display: none !important; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

/* -------- top bar -------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 24px;
  background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.brand-mark { font-size: 20px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tab {
  border: none; background: transparent; color: var(--muted);
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
  font-size: 14px; font-weight: 600; font-family: inherit;
}
.tab:hover { background: var(--bg); color: var(--text); }
.tab.active { background: var(--accent); color: #fff; }

/* -------- layout -------- */
main { max-width: 1080px; margin: 0 auto; padding: 24px; }
.view { animation: fade .15s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px);} to {opacity:1;transform:none;} }
h1 { font-size: 22px; margin: 0 0 4px; }
.muted { color: var(--muted); margin-top: 0; }
.req { color: var(--pri-urgent); }

/* -------- stat tiles -------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 14px; margin-bottom: 22px; }
.stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow);
}
.stat .num { font-size: 30px; font-weight: 700; line-height: 1; }
.stat .lbl { color: var(--muted); font-size: 13px; margin-top: 6px; }
.stat.accent .num { color: var(--accent); }
.stat.warn .num { color: var(--pri-high); }
.stat.danger .num { color: var(--pri-urgent); }
.stat.good .num { color: var(--pri-low); }

/* -------- toolbar / filters -------- */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; align-items: center; }
.toolbar input[type=search] { flex: 1 1 240px; }
input, select, textarea {
  font-family: inherit; font-size: 14px; padding: 9px 11px;
  border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text);
  width: 100%;
}
.toolbar select, .toolbar input { width: auto; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

/* -------- buttons -------- */
button { font-family: inherit; }
.btn-primary {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 10px 18px; font-weight: 600; font-size: 14px; cursor: pointer;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost {
  background: transparent; border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 14px; font-weight: 600; font-size: 14px; cursor: pointer; color: var(--text);
}
.btn-ghost:hover { background: var(--surface); }
.back { margin-bottom: 16px; }

/* -------- table -------- */
.table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow-x: auto; }
table.tasks { width: 100%; border-collapse: collapse; }
.tasks th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 12px 16px; border-bottom: 1px solid var(--border); }
.tasks td { padding: 13px 16px; border-bottom: 1px solid var(--border); }
.tasks tbody tr.clickable { cursor: pointer; }
.tasks tbody tr.clickable:hover { background: #f9fafb; }
.tasks tbody tr:last-child td { border-bottom: none; }
.ref { font-variant-numeric: tabular-nums; color: var(--muted); font-size: 13px; white-space: nowrap; }
.cell-title { font-weight: 600; }
.empty { padding: 40px; text-align: center; color: var(--muted); }
.due-over { color: var(--pri-urgent); font-weight: 600; }
.unassigned { color: var(--muted); font-style: italic; }

/* -------- badges -------- */
.badge { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.pri-Urgent { background: #fce8e6; color: var(--pri-urgent); }
.pri-High   { background: #fdece0; color: var(--pri-high); }
.pri-Medium { background: #fbf3d9; color: var(--pri-medium); }
.pri-Low    { background: #edf6e0; color: var(--pri-low); }
.status { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; border: 1px solid var(--border); }
.status-To-Do { background: #eef2ff; color: #3730a3; border-color:#c7d2fe; }
.status-In-Progress { background: #fff7ed; color: #9a3412; border-color:#fed7aa; }
.status-Blocked { background: #fce8e6; color: #9f1239; border-color:#fecdd3; }
.status-Done { background: #ecfdf5; color: #065f46; border-color:#a7f3d0; }

/* -------- cards & forms -------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.form-card { max-width: 720px; }
form label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 14px; }
form label input, form label select, form label textarea { margin-top: 6px; font-weight: 400; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-actions { display: flex; align-items: center; gap: 14px; margin-top: 8px; }
.form-msg { font-size: 14px; }
.form-msg.ok { color: var(--pri-low); }
.form-msg.err { color: var(--pri-urgent); }

/* -------- detail view -------- */
.detail-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 4px; }
.detail-header h1 { margin-bottom: 6px; }
.meta-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap: 14px; margin: 18px 0; }
.meta-grid .k { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing:.03em; }
.meta-grid .v { font-weight: 600; margin-top: 2px; }
.section-title { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 22px 0 8px; }
.prose { white-space: pre-wrap; }

/* workflow stepper */
.stepper { display: flex; gap: 6px; margin: 8px 0 20px; flex-wrap: wrap; }
.step { flex: 1 1 auto; text-align: center; padding: 8px 6px; border-radius: 8px; font-size: 13px; font-weight: 600; background: var(--bg); color: var(--muted); border: 1px solid var(--border); min-width: 110px; }
.step.done { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.step.current { background: var(--accent); color: #fff; border-color: var(--accent); }

/* notify banner */
.notify-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin: 6px 0 0; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; background: #f9fafb; }
.notify-row .grow { flex: 1; min-width: 160px; font-size: 13px; color: var(--muted); }

/* timeline */
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { position: relative; padding: 0 0 16px 22px; border-left: 2px solid var(--border); }
.timeline li:last-child { border-left-color: transparent; }
.timeline li::before { content:""; position:absolute; left:-6px; top:3px; width:10px; height:10px; border-radius:50%; background: var(--accent); }
.timeline .when { font-size: 12px; color: var(--muted); }
.timeline .who { font-weight: 600; }

.two-col { display: grid; grid-template-columns: 1fr 340px; gap: 22px; align-items: start; }
@media (max-width: 820px) { .two-col { grid-template-columns: 1fr; } .grid2 { grid-template-columns: 1fr; } }

/* -------- list / board toggle -------- */
.view-toggle { display: inline-flex; margin-left: auto; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface); }
.toggle-btn { border: none; background: transparent; color: var(--muted); padding: 8px 14px; font-size: 13px; font-weight: 600; cursor: pointer; }
.toggle-btn + .toggle-btn { border-left: 1px solid var(--border); }
.toggle-btn.active { background: var(--accent); color: #fff; }

/* -------- board (kanban) -------- */
.board { display: grid; grid-template-columns: repeat(4, minmax(200px, 1fr)); gap: 14px; align-items: start; overflow-x: auto; }
.board-col { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); display: flex; flex-direction: column; min-height: 120px; }
.board-col-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 12px 14px; border-bottom: 1px solid var(--border); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 700; }
.board-col-head .count { background: var(--bg); color: var(--muted); border-radius: 999px; padding: 1px 8px; font-size: 12px; }
.board-list { padding: 12px; display: flex; flex-direction: column; gap: 10px; flex: 1; min-height: 60px; }
.board-list.drop-hover { background: #f0fdfa; outline: 2px dashed var(--accent); outline-offset: -6px; border-radius: 8px; }
.board-empty { color: var(--muted); font-size: 13px; text-align: center; padding: 14px 0; }
.card-task { border: 1px solid var(--border); border-left: 3px solid var(--border); border-radius: 8px; background: #fff; padding: 10px 12px; cursor: grab; box-shadow: var(--shadow); }
.card-task:hover { border-color: #cbd5e1; }
.card-task.dragging { opacity: .5; }
.card-task.pri-Urgent { border-left-color: var(--pri-urgent); }
.card-task.pri-High   { border-left-color: var(--pri-high); }
.card-task.pri-Medium { border-left-color: var(--pri-medium); }
.card-task.pri-Low    { border-left-color: var(--pri-low); }
.card-task .card-title { font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.card-task .card-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 12px; color: var(--muted); }
.card-task .card-ref { font-variant-numeric: tabular-nums; }
.card-task .card-who { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 55%; }
.card-task .card-due { margin-top: 6px; font-size: 12px; color: var(--muted); }
@media (max-width: 820px) { .board { grid-template-columns: repeat(4, 78vw); } }

/* -------- calendar (month view) -------- */
.calendar-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; overflow-x: auto; }
.cal-head { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.cal-nav { display: flex; gap: 6px; }
.cal-nav .btn-ghost { padding: 7px 12px; }
.cal-title { font-size: 18px; font-weight: 700; }
.cal-nodate { margin-left: auto; font-size: 13px; color: var(--muted); }
.cal-grid { display: grid; grid-template-columns: repeat(7, minmax(120px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; min-width: 840px; }
.cal-dow { background: var(--surface); text-align: center; padding: 8px 4px; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 700; }
.cal-cell { background: var(--surface); min-height: 104px; padding: 6px; display: flex; flex-direction: column; gap: 4px; }
.cal-cell.other-month { background: #fafbfc; }
.cal-cell.other-month .cal-daynum { color: #c3c9d2; }
.cal-daynum { font-size: 12px; font-weight: 600; color: var(--muted); align-self: flex-end; line-height: 1; padding: 2px; }
.cal-cell.today .cal-daynum { background: var(--accent); color: #fff; border-radius: 999px; min-width: 20px; height: 20px; display: flex; align-items: center; justify-content: center; }
.cal-chip { display: block; text-align: left; width: 100%; border: none; border-left: 3px solid var(--border); background: #f5f7f9; color: var(--text); border-radius: 4px; padding: 3px 6px; font-size: 12px; font-weight: 600; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-family: inherit; }
.cal-chip:hover { filter: brightness(.97); }
.cal-chip.pri-Urgent { border-left-color: var(--pri-urgent); }
.cal-chip.pri-High   { border-left-color: var(--pri-high); }
.cal-chip.pri-Medium { border-left-color: var(--pri-medium); }
.cal-chip.pri-Low    { border-left-color: var(--pri-low); }
.cal-chip.done { text-decoration: line-through; color: var(--muted); }
.cal-chip.overdue { background: #fce8e6; }
.cal-chip .chip-time { color: var(--muted); font-weight: 400; }
.cal-more { font-size: 11px; color: var(--muted); padding: 1px 6px; cursor: pointer; }
.cal-more:hover { color: var(--accent); }

/* -------- auth screen -------- */
.auth-screen { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: var(--bg); padding: 20px; z-index: 100; }
.auth-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; width: 100%; max-width: 400px; }
.auth-brand { font-weight: 700; font-size: 16px; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.auth-card h1 { font-size: 20px; margin-bottom: 6px; }
.auth-card form label { margin-bottom: 16px; }

/* -------- user box in topbar -------- */
.user-box { display: flex; align-items: center; gap: 10px; }
.user-name { font-size: 13px; color: var(--muted); font-weight: 600; white-space: nowrap; }
.user-name .role-tag { display: inline-block; margin-left: 6px; padding: 1px 7px; border-radius: 999px; font-size: 11px; background: var(--accent); color: #fff; }
.user-name .role-tag.staff { background: var(--bg); color: var(--muted); border: 1px solid var(--border); }

/* -------- role-based visibility -------- */
body:not(.is-admin) .admin-only { display: none !important; }
body:not(.is-admin) .col-check  { display: none !important; }

/* -------- bulk delete (list) -------- */
.bulk-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; padding: 10px 14px; background: #fff5f5; border: 1px solid #fecdd3; border-radius: 8px; }
#bulk-count { font-weight: 600; font-size: 14px; }
.col-check { width: 40px; text-align: center; }
.col-check input { width: auto; cursor: pointer; margin: 0; }
.tasks tbody tr.row-selected { background: #fff5f5; }

/* -------- danger button -------- */
.btn-danger { background: var(--pri-urgent); color: #fff; border: none; border-radius: 8px; padding: 9px 16px; font-weight: 600; font-size: 14px; cursor: pointer; }
.btn-danger:hover { filter: brightness(.93); }
.btn-danger-ghost { background: transparent; border: 1px solid #fecdd3; color: var(--pri-urgent); border-radius: 8px; padding: 9px 14px; font-weight: 600; font-size: 14px; cursor: pointer; }
.btn-danger-ghost:hover { background: #fff5f5; }

/* summary head (reused for staff) */
.summary-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }

/* toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #111827; color: #fff; padding: 12px 20px; border-radius: 10px;
  box-shadow: 0 6px 24px rgba(0,0,0,.25); z-index: 50; font-size: 14px;
}

/* hints */
.hint { display:block; font-weight:400; color: var(--muted); font-size: 12px; margin-top: 5px; }
.link-btn { background:none; border:none; color: var(--accent); font-weight:600; cursor:pointer; padding:0; font-size:13px; }
.link-btn:hover { text-decoration: underline; }