/* Kwacha Seeds Inventory — no external fonts or CDNs, so it works fully offline */
:root {
  --green-900: #143821;
  --green-800: #1f5130;
  --green-700: #2b6b40;
  --green-100: #e6f0e4;
  --gold: #e0a526;
  --gold-100: #fbf1d9;
  --soil: #6b4a2b;
  --bg: #f6f4ee;
  --surface: #ffffff;
  --border: #e3dfd3;
  --text: #22261f;
  --muted: #6c7066;
  --danger: #b4372b;
  --danger-100: #fbe6e3;
  --warning: #9a6a00;
  --warning-100: #fdf1d3;
  --success: #2b6b40;
  --success-100: #e3f1e2;
  --info: #285e8a;
  --info-100: #e2eef8;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 15, .06), 0 2px 8px rgba(20, 30, 15, .04);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 14px/1.5 var(--font); color: var(--text); background: var(--bg); }
a { color: var(--green-700); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .6em; }
h2 { font-size: 17px; }
h3 { font-size: 15px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.center { text-align: center; }
.right, td.num, th.num { text-align: right; }
.nowrap { white-space: nowrap; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }

/* ---------- Layout ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 240px; flex-shrink: 0; background: var(--green-900); color: #dfe9da; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; padding: 18px 18px 14px; color: #fff; }
.brand:hover { text-decoration: none; }
.brand .logo { width: 38px; height: 38px; flex-shrink: 0; }
.brand strong { display: block; font-size: 15px; }
.brand small { color: var(--gold); text-transform: uppercase; letter-spacing: .08em; font-size: 10.5px; font-weight: 600; }
.sidebar nav { padding: 4px 10px 24px; }
.nav-group { font-size: 10.5px; text-transform: uppercase; letter-spacing: .1em; color: #8fae8a; padding: 14px 10px 4px; font-weight: 600; }
.sidebar nav a { display: block; padding: 7px 10px; border-radius: 7px; color: #dfe9da; margin: 1px 0; }
.sidebar nav a:hover { background: rgba(255,255,255,.07); text-decoration: none; }
.sidebar nav a.active { background: var(--green-700); color: #fff; box-shadow: inset 3px 0 0 var(--gold); }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; align-items: center; gap: 14px; padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
.topbar h1 { font-size: 19px; margin: 0; flex: 1; }
.menu-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px; font-size: 18px; cursor: pointer; }
.user-menu { display: flex; align-items: center; gap: 10px; }
.user-chip { display: flex; align-items: center; gap: 8px; color: var(--text); }
.user-chip:hover { text-decoration: none; }
.user-chip small { display: block; color: var(--muted); font-size: 11.5px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--gold); color: var(--green-900); display: grid; place-items: center; font-weight: 700; }
.content { padding: 22px 24px; flex: 1; }
.foot { padding: 14px 24px; color: var(--muted); font-size: 12px; }

/* ---------- Cards & grids ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 18px; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.card-head h2 { margin: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 > .card, .grid-3 > .card { margin-bottom: 0; }
.stack > * + * { margin-top: 12px; }
.mb { margin-bottom: 18px; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 18px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); border-top: 3px solid var(--green-700); }
.kpi.gold { border-top-color: var(--gold); }
.kpi.danger { border-top-color: var(--danger); }
.kpi.warn { border-top-color: var(--warning); }
.kpi .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
.kpi .value { font-size: 21px; font-weight: 700; margin-top: 4px; }
.kpi .sub { color: var(--muted); font-size: 12px; }
a.kpi:hover { text-decoration: none; border-color: var(--green-700); }
a.kpi { color: inherit; display: block; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; background: #faf9f5; white-space: nowrap; }
tbody tr:hover { background: #fbfaf6; }
tfoot td { font-weight: 700; background: #faf9f5; }
tr.void td { color: var(--muted); text-decoration: line-through; }
tr.inactive td { color: var(--muted); }
.empty { text-align: center; color: var(--muted); padding: 28px; }

/* ---------- Badges & alerts ---------- */
.badge { display: inline-block; padding: 2px 8px; border-radius: 99px; font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.badge-success { background: var(--success-100); color: var(--success); }
.badge-warning { background: var(--warning-100); color: var(--warning); }
.badge-danger { background: var(--danger-100); color: var(--danger); }
.badge-info { background: var(--info-100); color: var(--info); }
.badge-neutral { background: #eeece4; color: #555a50; }
.badge-gold { background: var(--gold-100); color: #7a5600; }

.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; border: 1px solid transparent; }
.alert-success { background: var(--success-100); color: var(--success); border-color: #c4dfc1; }
.alert-danger { background: var(--danger-100); color: var(--danger); border-color: #f0c5bf; }
.alert-warning { background: var(--warning-100); color: var(--warning); border-color: #f1dca4; }
.alert-info { background: var(--info-100); color: var(--info); border-color: #c4dbee; }

/* ---------- Forms ---------- */
label { display: block; font-weight: 600; font-size: 12.5px; color: #3c4137; }
input, select, textarea { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; border: 1px solid #cfcabb; border-radius: 7px; font: inherit; font-weight: 400; background: #fff; color: var(--text); }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(43,107,64,.25); border-color: var(--green-700); }
textarea { min-height: 70px; resize: vertical; }
label.check { display: flex; align-items: center; gap: 8px; font-weight: 400; }
label.check input { width: auto; margin: 0; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 18px; }
.form-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.form-grid h3 { margin: 6px 0 -4px; color: var(--green-800); }
.span-2 { grid-column: span 2; }
.span-all { grid-column: 1 / -1; }
.hint { font-weight: 400; color: var(--muted); font-size: 11.5px; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; }
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 14px; }
.filters label { min-width: 150px; }
.filters input, .filters select { padding: 6px 9px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px; border-radius: 7px; border: 1px solid #cfcabb; background: #fff; color: var(--text); font: inherit; font-weight: 600; cursor: pointer; white-space: nowrap; }
.btn:hover { text-decoration: none; background: #f7f5ef; }
.btn-primary { background: var(--green-800); border-color: var(--green-800); color: #fff; }
.btn-primary:hover { background: var(--green-700); }
.btn-gold { background: var(--gold); border-color: var(--gold); color: var(--green-900); }
.btn-gold:hover { background: #cf961c; }
.btn-danger { background: #fff; border-color: #e3b0aa; color: var(--danger); }
.btn-danger:hover { background: var(--danger-100); }
.btn-ghost { background: transparent; }
.btn-sm { padding: 4px 10px; font-size: 12.5px; }
.btn-block { width: 100%; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
.inline { display: inline; }

/* ---------- Line-item editor ---------- */
.lines th, .lines td { padding: 6px; }
.lines input, .lines select { margin: 0; padding: 6px 8px; }
.lines .remove-line { padding: 4px 9px; }
.totals { margin-left: auto; max-width: 360px; }
.totals div { display: flex; justify-content: space-between; padding: 5px 0; }
.totals .grand { font-size: 18px; font-weight: 700; border-top: 2px solid var(--text); margin-top: 4px; padding-top: 8px; }
.avail { font-size: 11.5px; color: var(--muted); }
.avail.low { color: var(--danger); font-weight: 600; }

/* ---------- Charts (pure CSS) ---------- */
.bars { display: flex; align-items: flex-end; gap: 12px; height: 200px; padding-top: 10px; }
.bar { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; }
.bar .fill { width: 100%; max-width: 54px; background: linear-gradient(180deg, var(--green-700), var(--green-800)); border-radius: 5px 5px 0 0; min-height: 2px; }
.bar.current .fill { background: linear-gradient(180deg, var(--gold), #c18a12); }
.bar .v { font-size: 11px; color: var(--muted); margin-bottom: 4px; white-space: nowrap; }
.bar .l { font-size: 12px; margin-top: 6px; color: var(--muted); }
.hbar { display: grid; grid-template-columns: 120px 1fr 110px; align-items: center; gap: 10px; margin: 7px 0; font-size: 13px; }
.hbar .track { background: #efece3; border-radius: 99px; height: 10px; overflow: hidden; }
.hbar .track span { display: block; height: 100%; background: var(--green-700); border-radius: 99px; }
.hbar .val { text-align: right; color: var(--muted); font-size: 12px; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tabs a { padding: 8px 14px; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px; font-weight: 600; }
.tabs a:hover { text-decoration: none; color: var(--text); }
.tabs a.active { color: var(--green-800); border-bottom-color: var(--gold); }

/* ---------- Detail lists ---------- */
dl.details { display: grid; grid-template-columns: 150px 1fr; gap: 6px 12px; margin: 0; }
dl.details dt { color: var(--muted); }
dl.details dd { margin: 0; font-weight: 500; }

/* ---------- Auth pages ---------- */
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 20% 10%, #2b6b40 0, #143821 55%); }
.auth-card { background: #fff; width: 100%; max-width: 380px; padding: 28px; border-radius: 14px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.auth-card.wide { max-width: 640px; }
.auth-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.auth-brand .logo { width: 48px; height: 48px; }
.auth-brand strong { display: block; font-size: 19px; color: var(--green-900); }
.auth-brand span { color: var(--muted); font-size: 13px; }
.checklist { list-style: none; padding: 10px 14px; background: #faf9f5; border-radius: 8px; margin: 0 0 16px; font-size: 13px; }
.checklist .ok { color: var(--success); }
.checklist .fail { color: var(--danger); font-weight: 600; }

/* ---------- Invoice ---------- */
.invoice { max-width: 860px; }
.invoice-head { display: flex; justify-content: space-between; gap: 20px; border-bottom: 3px solid var(--green-800); padding-bottom: 14px; margin-bottom: 16px; }
.invoice-head .co { display: flex; gap: 12px; }
.invoice-head .co .logo { width: 54px; height: 54px; }
.invoice-head h2 { font-size: 22px; color: var(--green-900); margin: 0; }
.invoice-title { text-align: right; }
.invoice-title .doc { font-size: 24px; font-weight: 800; letter-spacing: .06em; color: var(--soil); }
.stamp { display: inline-block; border: 2px solid var(--danger); color: var(--danger); padding: 2px 10px; font-weight: 800; letter-spacing: .1em; transform: rotate(-4deg); }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .form-grid.cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .sidebar { position: fixed; left: -260px; z-index: 20; transition: left .2s; box-shadow: 4px 0 20px rgba(0,0,0,.2); }
  .sidebar.open { left: 0; }
  .menu-toggle { display: block; }
  .grid-2, .grid-3, .form-grid, .form-grid.cols-3, .form-grid.cols-4 { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .user-chip span:last-child { display: none; }
  .content { padding: 16px; }
  .topbar { padding: 10px 16px; }
  .hbar { grid-template-columns: 90px 1fr 90px; }
  .invoice-head { flex-direction: column; }
  .invoice-title { text-align: left; }
}

/* ---------- Print ---------- */
@media print {
  body { background: #fff; font-size: 12px; }
  .sidebar, .topbar, .foot, .no-print, .alert { display: none !important; }
  .content { padding: 0; }
  .card { box-shadow: none; border: none; padding: 0; }
  th { background: #f2f2f2 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  a { color: inherit; }
}