/* AJT Invoice App — professional theme, light & dark aware */
:root {
  --bg: #f4f6f9; --surface: #ffffff; --surface2: #f0f2f5;
  --text: #1a2332; --text2: #5b6b7f; --border: #dde3ea;
  --accent: #1d4ed8; --accent-soft: #e8effd;
  --green: #15803d; --green-soft: #e8f7ee;
  --red: #b91c1c; --red-soft: #fdecec;
  --amber: #b45309; --amber-soft: #fdf3e0;
  --purple: #6d28d9; --purple-soft: #f1eafd;
  --teal: #0f766e; --teal-soft: #e6f6f4;
  --gray: #475569; --gray-soft: #eef1f4;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04);
  --font-ui: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sidebar-w: 236px; --sidebar-w-collapsed: 64px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420; --surface: #1a2130; --surface2: #232b3d;
    --text: #e6eaf2; --text2: #94a3b8; --border: #2e3950;
    --accent: #60a5fa; --accent-soft: #1e2c4d;
    --green: #4ade80; --green-soft: #12301f;
    --red: #f87171; --red-soft: #3a1a1a;
    --amber: #fbbf24; --amber-soft: #37280e;
    --purple: #c4b5fd; --purple-soft: #291d47;
    --teal: #5eead4; --teal-soft: #0e2f2b;
    --gray: #cbd5e1; --gray-soft: #262e40;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 var(--font-ui);
  display: flex; align-items: stretch; min-height: 100vh;
}
button { font: inherit; cursor: pointer; }
input, select { font: inherit; color: var(--text); background: var(--surface); }

/* ---------- sidebar ---------- */
#sidebar {
  flex: 0 0 auto; width: var(--sidebar-w); background: var(--surface);
  border-right: 1px solid var(--border); display: flex; flex-direction: column;
  transition: width .18s ease; overflow: hidden;
}
#sidebar.collapsed { width: var(--sidebar-w-collapsed); }
#sidebar .brand {
  display: flex; align-items: center; gap: 10px; padding: 16px 18px 14px;
  white-space: nowrap; border-bottom: 1px solid var(--border); min-height: 24px;
}
#sidebar .brand .mark {
  width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: #fff;
  flex: 0 0 auto; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
#sidebar .brand .name { font-weight: 700; font-size: 14.5px; letter-spacing: -.01em; }
#sidebar .brand .name span { color: var(--accent); }
#sidebar.collapsed .brand .name { display: none; }
.sb-groups { flex: 1; overflow-y: auto; padding: 10px 10px 10px; }
.sb-group { margin-bottom: 4px; }
.sb-group-label {
  font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em;
  color: var(--text2); padding: 14px 10px 6px; white-space: nowrap;
}
#sidebar.collapsed .sb-group-label { text-align: center; padding-left: 0; padding-right: 0; }
#sidebar .navbtn {
  display: flex; align-items: center; gap: 11px; width: 100%; padding: 8px 10px;
  font-size: 13.5px; text-align: left; position: relative; white-space: nowrap; margin-bottom: 1px;
}
#sidebar.collapsed .navbtn { justify-content: center; padding: 9px 0; }
#sidebar .navbtn svg { flex: 0 0 auto; width: 17px; height: 17px; }
#sidebar .navbtn.active::before {
  content: ""; position: absolute; left: -10px; top: 6px; bottom: 6px; width: 3px;
  border-radius: 0 3px 3px 0; background: var(--accent);
}
#sidebar.collapsed .navbtn.active::before { display: none; }
#sidebar .navbtn .chip.red { margin-left: auto; }
#sidebar.collapsed .navbtn .chip.red { position: absolute; top: 2px; right: 6px; }
.sb-footer { border-top: 1px solid var(--border); padding: 8px; flex: 0 0 auto; }
.sb-collapse-btn {
  display: flex; align-items: center; gap: 10px; width: 100%; border: 0; background: none;
  color: var(--text2); padding: 9px 10px; border-radius: 8px; font-weight: 600; font-size: 12.5px;
}
.sb-collapse-btn:hover { background: var(--surface2); color: var(--text); }
#sidebar.collapsed .sb-collapse-btn { justify-content: center; }
#sidebar.collapsed .sb-collapse-btn .label { display: none; }
.sb-collapse-btn svg { transition: transform .18s ease; flex: 0 0 auto; }
#sidebar.collapsed .sb-collapse-btn svg { transform: rotate(180deg); }

/* ---------- content column ---------- */
#content-col { flex: 1; min-width: 0; display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* ---------- top strip ---------- */
#topbar {
  display: flex; align-items: center; gap: 6px; padding: 0 18px; height: 52px; flex: 0 0 auto;
  background: var(--surface); border-bottom: 1px solid var(--border);
}
#topbar .brand { font-weight: 700; font-size: 15px; margin-right: 14px; white-space: nowrap; }
#topbar .brand span { color: var(--accent); }
.navbtn {
  border: 0; background: none; color: var(--text2); padding: 8px 12px;
  border-radius: 8px; font-weight: 600;
}
.navbtn:hover { background: var(--surface2); color: var(--text); }
.navbtn.active { background: var(--accent-soft); color: var(--accent); }
#topbar .spacer { flex: 1; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px;
  border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap;
}
.pill .dot { width: 8px; height: 8px; border-radius: 50%; }
.pill.ok { background: var(--green-soft); color: var(--green); }
.pill.ok .dot { background: var(--green); }
.pill.bad { background: var(--red-soft); color: var(--red); }
.pill.bad .dot { background: var(--red); }
#userbox { position: relative; }
#usermenu {
  position: absolute; right: 0; top: 40px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow);
  min-width: 180px; display: none; z-index: 50; overflow: hidden;
}
#usermenu button { display: block; width: 100%; text-align: left; padding: 10px 14px; border: 0; background: none; color: var(--text); }
#usermenu button:hover { background: var(--surface2); }

/* ---------- layout ---------- */
#main { flex: 1; overflow-y: auto; padding: 18px; max-width: 1500px; margin: 0 auto; width: 100%; }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; box-shadow: var(--shadow); padding: 16px; margin-bottom: 16px;
}
.card h3 { margin: 0 0 12px; font-size: 15px; }
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar .grow { flex: 1; }

/* ---------- stat tiles (KPI row that doubles as a filter) ---------- */
.stat-tiles { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.stat-tile {
  flex: 1; min-width: 150px; text-align: left; cursor: pointer;
  background: var(--surface2); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 14px; color: var(--text); font: inherit;
}
.stat-tile:hover { border-color: var(--accent); }
.stat-tile.active { border-color: var(--accent); border-width: 2px; padding: 9px 13px; background: var(--accent-soft); }
.stat-tile .stat-label {
  display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--text2); margin-bottom: 4px;
}
.stat-tile .stat-value { display: block; font-size: 20px; font-weight: 700; line-height: 1.2; }
.stat-tile .stat-sub { display: block; font-size: 12px; color: var(--text2); margin-top: 2px; }
.stat-tile.green .stat-value { color: var(--green); }
.stat-tile.amber .stat-value { color: var(--amber); }
.stat-tile.red .stat-value { color: var(--red); }

/* ---------- tables ---------- */
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .03em;
  color: var(--text2); padding: 8px 10px; border-bottom: 2px solid var(--border);
}
td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr.rowlink { cursor: pointer; }
tr.rowlink:hover td { background: var(--surface2); }
td.num, th.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ---------- Excel-style per-column header filters ---------- */
.th-filter-btn {
  border: none; background: none; color: var(--text2); cursor: pointer;
  font-size: 10px; padding: 0 0 0 4px; vertical-align: middle;
}
.th-filter-btn:hover { color: var(--text); }
.th-filter-btn.active { color: var(--accent); font-weight: 700; }
.col-filter-dropdown {
  position: fixed; z-index: 210; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.16); width: 260px; padding: 8px;
  text-transform: none; letter-spacing: normal; font-size: 13px; font-weight: 400; color: var(--text);
}
.col-filter-dropdown input[type="text"] {
  width: 100%; border: 1px solid var(--border); border-radius: 6px; padding: 5px 8px;
  font-size: 12px; margin-bottom: 6px;
}
.col-filter-dropdown input[type="text"]:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.cfd-list { max-height: 220px; overflow-y: auto; border-top: 1px solid var(--border); padding-top: 4px; }
.cfd-list label, .col-filter-dropdown .cfd-all {
  display: block; padding: 3px 4px; border-radius: 4px; cursor: pointer; font-size: 12.5px;
}
.cfd-list label:hover { background: var(--surface2); }
.cfd-all { font-weight: 600; border-bottom: 1px solid var(--border); margin-bottom: 4px; padding-bottom: 6px !important; }
.col-filter-dropdown .actions { display: flex; gap: 6px; margin-top: 8px; }
/* Excel-style Year > Month > Day tree for date-column filters */
.cfd-tree-year, .cfd-tree-month, .cfd-tree-day { display: flex; align-items: center; }
.cfd-tree-year label, .cfd-tree-month label, .cfd-tree-day label {
  display: inline-block; padding: 3px 4px; border-radius: 4px; cursor: pointer; font-size: 12.5px;
}
.cfd-tree-year label:hover, .cfd-tree-month label:hover, .cfd-tree-day label:hover { background: var(--surface2); }
.cfd-tree-month { padding-left: 16px; }
.cfd-tree-day { padding-left: 32px; }
.cfd-tree-toggle {
  display: inline-block; width: 14px; flex-shrink: 0; cursor: pointer; user-select: none;
  color: var(--muted); font-size: 10px; text-align: center;
  background: none; border: none; padding: 0; font-family: inherit;
}

/* ---------- status chips ---------- */
.chip { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.chip.blue { background: var(--accent-soft); color: var(--accent); }
.chip.green { background: var(--green-soft); color: var(--green); }
.chip.red { background: var(--red-soft); color: var(--red); }
.chip.amber { background: var(--amber-soft); color: var(--amber); }
.chip.purple { background: var(--purple-soft); color: var(--purple); }
.chip.teal { background: var(--teal-soft); color: var(--teal); }
.chip.gray { background: var(--gray-soft); color: var(--gray); }
.chip.pulse { animation: chip-pulse 1.4s ease-in-out infinite; }
.cat-select { border: 1px solid var(--border); border-radius: 6px; padding: 5px 6px; font-size: 12.5px; background: var(--surface); color: var(--text); min-width: 96px; }
.cat-select.cat-missing { border-color: var(--amber); background: var(--amber-soft); color: var(--amber); font-weight: 600; }
@keyframes chip-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 8px 14px; border-radius: 8px; font-weight: 600;
}
.btn:hover { background: var(--surface2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.success { background: var(--green); border-color: var(--green); color: #fff; }
.btn.danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn.danger:hover { background: var(--red-soft); }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- forms ---------- */
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; font-weight: 600; color: var(--text2); }
.field input, .field select {
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; width: 100%;
}
.field input:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

/* ---------- breadcrumb (top strip) ---------- */
.crumb { font-weight: 700; font-size: 14.5px; }
.crumb .sep { color: var(--text2); font-weight: 400; margin: 0 6px; }
.crumb .sub { color: var(--text2); font-weight: 600; }

/* ---------- review screen ---------- */
#review-container { display: grid; grid-template-columns: minmax(480px, 62%) 1fr; gap: 16px; align-items: start; }
#preview-pane { position: sticky; top: 68px; max-height: calc(100vh - 84px); overflow-y: auto; }
#preview-zoom { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; padding: 8px; background: var(--surface2); border-radius: 6px; }
#preview-zoom span:not(.preview-toolbar-sep) { font-size: 12px; font-weight: 600; min-width: 50px; text-align: center; color: var(--text2); }
#preview-zoom .grow { flex: 1; }
#preview-zoom .preview-toolbar-sep { width: 1px; align-self: stretch; min-width: 1px; background: var(--border); margin: 0 2px; }
#download-doc { display: inline-flex; align-items: center; text-decoration: none; }
/* Zoom works by widening the image inside a scrollable box (a CSS transform
   would not change layout size, leaving nothing to scroll — the old bug).
   min/max-height raised (was 300/78vh) — the previous cap made most invoices
   render too small to read comfortably without zooming in first. */
#preview-img-wrap { border: 1px solid var(--border); border-radius: 8px; overflow: auto; background: #fff; display: block; min-height: 480px; max-height: 86vh; }
#preview-img { max-width: 100%; height: auto; display: block; margin: 0 auto; user-select: none; -webkit-user-drag: none; }
#pagenav { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 8px; color: var(--text2); }
#lines-table input {
  width: 100%; border: 1px solid transparent; background: transparent;
  padding: 4px 6px; border-radius: 6px; color: var(--text);
}
#lines-table input:hover { border-color: var(--border); }
#lines-table input:focus { border-color: var(--accent); background: var(--surface); outline: none; }
#lines-table input.num { text-align: right; font-variant-numeric: tabular-nums; }
#lines-table tr.flagged td { background: var(--amber-soft); }
#lines-wrap { overflow-x: auto; }
#lines-table { min-width: 1050px; }
.mathcheck { margin-top: 10px; padding: 10px 12px; border-radius: 8px; font-weight: 600; }
.mathcheck.ok { background: var(--green-soft); color: var(--green); }
.mathcheck.bad { background: var(--red-soft); color: var(--red); }
.actions { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }

/* ---------- alerts ---------- */
.alert { padding: 12px 14px; border-radius: 8px; margin-bottom: 12px; }
.alert-red { background: var(--red-soft); color: var(--red); border-left: 4px solid var(--red); }

/* ---------- login ---------- */
#login-screen {
  position: fixed; inset: 0; background: var(--bg); z-index: 100;
  display: flex; align-items: center; justify-content: center;
}
#login-card { width: 360px; }
#login-card .logo { text-align: center; font-size: 20px; font-weight: 700; margin-bottom: 4px; }
#login-card .sub { text-align: center; color: var(--text2); margin-bottom: 18px; font-size: 13px; }
#login-card .field { margin-bottom: 12px; }

/* ---------- modal ---------- */
.modal-back {
  position: fixed; inset: 0; background: rgba(10, 15, 25, .45); z-index: 90;
  display: flex; align-items: center; justify-content: center;
}
.modal { width: min(480px, 92vw); max-height: 86vh; overflow: auto; }

/* ---------- misc ---------- */
.muted { color: var(--text2); font-size: 12px; }
.empty { text-align: center; color: var(--text2); padding: 32px 0; }
#toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 18px; border-radius: 10px;
  font-weight: 600; z-index: 120; display: none; max-width: 80vw;
}
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.tab { border: 0; background: none; padding: 8px 14px; font-weight: 600; color: var(--text2); border-bottom: 2px solid transparent; }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
@media (max-width: 900px) {
  #review-container { grid-template-columns: 1fr; }
  #preview-pane { position: static; }
  .grid4, .grid3 { grid-template-columns: 1fr 1fr; }
  #sidebar:not(.collapsed) { width: var(--sidebar-w-collapsed); }
  #sidebar:not(.collapsed) .brand .name,
  #sidebar:not(.collapsed) .sb-group-label,
  #sidebar:not(.collapsed) .sb-collapse-btn .label { display: none; }
  #sidebar:not(.collapsed) .navbtn { justify-content: center; padding: 9px 0; }
}

/* ---------- upload drop zone ---------- */
#drop-zone {
  border: 2px dashed var(--border); border-radius: 12px;
  background: var(--surface2); transition: border-color .2s, background .2s;
  cursor: pointer;
}
#drop-zone.drag-over {
  border-color: var(--accent); background: var(--accent-soft);
}
#drop-inner {
  display: flex; flex-direction: column; align-items: center;
  padding: 48px 24px; text-align: center;
}
#drop-zone:focus-within { border-color: var(--accent); }