:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --border: #dfe4ea;
  --text: #1f2733;
  --muted: #6b7686;
  --accent: #1a56db;
  --accent-soft: #e8effc;
  --danger: #c0392b;
  --warn-bg: #fff4e0;
  --warn-border: #f0b429;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.error { color: var(--danger); font-size: 13px; margin: 8px 0; }

/* ---- login ---- */
.login-screen {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
}
.login-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 32px; width: 340px; box-shadow: 0 8px 30px rgba(0,0,0,.06);
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card p { margin-top: 0; }
.login-card label { display: block; margin: 14px 0 0; font-weight: 600; font-size: 13px; }
.login-card input { width: 100%; margin-top: 4px; }
.login-card button { width: 100%; margin-top: 18px; }

/* ---- layout ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--card); border-bottom: 1px solid var(--border);
  padding: 10px 20px; position: sticky; top: 0; z-index: 20;
}
.brand { font-weight: 700; font-size: 17px; color: var(--accent); display: flex; align-items: center; gap: 8px; }
.brand-logo { height: 34px; display: block; }
.login-logo { display: block; width: 170px; margin: 0 auto 4px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
main { padding: 20px; max-width: 1500px; margin: 0 auto; }

.reminder-banner {
  background: var(--warn-bg); border-bottom: 2px solid var(--warn-border);
  padding: 10px 20px; font-size: 14px;
}
.reminder-banner b { color: #92400e; }
.reminder-banner .reminder-item { margin-right: 14px; white-space: nowrap; }
.reminder-banner .overdue { color: var(--danger); font-weight: 600; }

/* ---- controls ---- */
.btn {
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: 8px; padding: 7px 14px; font-size: 13px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #164bbd; color: #fff; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.tiny { padding: 2px 8px; font-size: 12px; }
.badge {
  background: var(--danger); color: #fff; border-radius: 10px;
  font-size: 11px; padding: 1px 7px; margin-left: 4px;
}
.save-indicator { font-size: 12px; color: var(--muted); min-width: 60px; text-align: right; }
.save-indicator.saved { color: #16803c; }

input, select, textarea {
  font: inherit; color: inherit;
  border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 8px; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

.add-form { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.add-form #add-name { flex: 1; min-width: 220px; }
.add-form #search { margin-left: auto; min-width: 220px; }

/* ---- table ---- */
.table-wrap {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  overflow: auto;
  max-height: calc(100vh - 250px);
}
table { border-collapse: collapse; width: 100%; min-width: 1850px; }
th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); padding: 10px 12px; border-bottom: 2px solid var(--border);
  background: #fafbfc; position: sticky; top: 0; z-index: 4;
  height: 44px; box-sizing: border-box;
}
td { padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
td input, td select { width: 100%; border-color: transparent; background: transparent; }
td input:hover, td select:hover { border-color: var(--border); background: #fff; }
td input:focus, td select:focus { background: #fff; }
td textarea {
  width: 100%; border-color: transparent; background: transparent;
  resize: vertical; min-height: 30px; font-size: 13px;
}
td textarea:hover { border-color: var(--border); background: #fff; }
td textarea:focus { background: #fff; }

.col-name { min-width: 200px; }
.col-note { min-width: 150px; }
.col-contact { min-width: 150px; }
.col-remarks { min-width: 260px; }
.col-actions { width: 90px; }

tr.parent-row.partner { background: #fbfcff; }
tr.child-row td { background: #f7f9fc; }
tr.child-row td:first-child { padding-left: 34px; }
tr.due-row td:first-child { box-shadow: inset 3px 0 0 var(--warn-border); }
tr.overdue-row td:first-child { box-shadow: inset 3px 0 0 var(--danger); }

.name-cell { display: flex; align-items: center; gap: 6px; }
.expander {
  border: none; background: none; cursor: pointer; font-size: 11px;
  color: var(--muted); width: 18px; padding: 0;
}
.child-count { font-size: 11px; color: var(--muted); white-space: nowrap; }
.row-actions { display: flex; gap: 4px; justify-content: flex-end; }
.row-actions .btn { padding: 3px 8px; font-size: 12px; }
tr.add-child-row td { background: #f7f9fc; padding-left: 34px; }
tr.add-child-row form { display: flex; gap: 6px; }
tr.add-child-row input { width: 240px; background: #fff; border-color: var(--border); }

.empty-state { padding: 40px; text-align: center; color: var(--muted); }

/* ---- view tabs ---- */
.view-tabs { display: flex; gap: 6px; align-items: center; margin-bottom: 12px; }
.view-tabs .tab {
  border: 1px solid var(--border); background: var(--card); color: var(--muted);
  border-radius: 999px; padding: 6px 16px; font-size: 13px; cursor: pointer;
}
.view-tabs .tab:hover { border-color: var(--accent); color: var(--accent); }
.view-tabs .tab.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.view-tabs #btn-clear-filters { margin-left: auto; }

/* ---- column filters ---- */
.filter-row th { padding: 4px 8px; background: #f3f5f8; position: sticky; top: 44px; z-index: 4; height: auto; }
.filter-row select {
  width: 100%; font-size: 12px; padding: 3px 4px;
  border: 1px solid var(--border); border-radius: 6px; background: #fff; color: var(--muted);
}
.filter-row select.active { border-color: var(--accent); color: var(--accent); font-weight: 600; }

/* ---- status quick-filter chips ---- */
.status-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.status-chips .chip {
  border: 1px solid var(--border); border-radius: 999px; padding: 5px 13px;
  font-size: 12.5px; font-weight: 600; cursor: pointer; background: #fff; color: var(--muted);
}
.status-chips .chip.active { outline: 2px solid var(--accent); outline-offset: 1px; }
.status-chips .chip:hover { filter: brightness(.96); }

/* ---- follow-up date states ---- */
.date-wrap { display: flex; align-items: center; gap: 2px; }
td input.date-overdue { background: #fde2e0 !important; color: #b3251e !important; font-weight: 700; border-radius: 6px; }
td input.date-today { background: #fdf0d3 !important; color: #92600a !important; font-weight: 700; border-radius: 6px; }
.none-btn {
  border: none; background: none; color: var(--muted); cursor: pointer;
  font-size: 14px; padding: 0 3px; opacity: 0;
}
tr:hover .none-btn { opacity: 1; }
.none-btn:hover { color: var(--accent); }
.no-fu {
  display: inline-flex; align-items: center; gap: 4px; white-space: nowrap;
  background: #ececec; color: #6b6b6b; border-radius: 999px; padding: 4px 9px; font-size: 12px;
}
.no-fu .chip-x { border: none; background: none; cursor: pointer; color: inherit; font-size: 13px; padding: 0; }
.no-fu .chip-x:hover { color: var(--danger); }

/* Parent rows shown only as context for a matching sub-lead */
tr.context-row > td { opacity: .45; }

/* ---- status colour coding (Excel-style) ---- */
td input.status-input, td select.status-input { border-radius: 6px; font-weight: 600; }
.st-green  { background: #d9f2e3 !important; color: #14683c !important; }
.st-red    { background: #fde2e0 !important; color: #b3251e !important; }
.st-amber  { background: #fdf0d3 !important; color: #92600a !important; }
.st-blue   { background: #ddebfb !important; color: #1c5bb0 !important; }
.st-slate  { background: #e4e9f0 !important; color: #4a5a70 !important; }
.st-gray   { background: #ececec !important; color: #6b6b6b !important; }
.st-purple { background: #ecdff7 !important; color: #6d3ba3 !important; }
.st-indigo { background: #e2e4fa !important; color: #3f4ab8 !important; }

/* ---- side panel / modal ---- */
.side-panel {
  position: fixed; top: 0; right: 0; bottom: 0; width: 420px; max-width: 95vw;
  background: var(--card); border-left: 1px solid var(--border);
  box-shadow: -8px 0 30px rgba(0,0,0,.08); z-index: 40;
  display: flex; flex-direction: column;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.panel-head h2 { margin: 0; font-size: 16px; }
.panel-actions { padding: 12px 18px; border-bottom: 1px solid var(--border); }
.changes-list { overflow-y: auto; padding: 10px 18px; flex: 1; }
.change-item { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.change-item .meta { color: var(--muted); font-size: 11px; margin-top: 2px; }
.change-item .unsent-dot { color: var(--danger); }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,.45);
  display: flex; align-items: center; justify-content: center; z-index: 50;
}
.modal {
  background: var(--card); border-radius: 12px; width: 520px; max-width: 94vw;
  max-height: 90vh; overflow-y: auto;
}
.modal form { padding: 4px 18px 18px; }
.modal h3 { font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin: 18px 0 6px; }
.modal label { display: block; margin: 10px 0 0; font-weight: 600; font-size: 13px; }
.modal label input:not([type=checkbox]) { width: 100%; margin-top: 4px; font-weight: 400; }
.modal .row-label { display: flex; align-items: center; gap: 8px; font-weight: 400; }
.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 10px; }
.modal-actions { display: flex; gap: 10px; margin-top: 18px; }