/* ==========================================================================
   VoltLot Shop OS — design system
   A trading-desk aesthetic: deep navy, restrained gold, tabular numerics.
   Dense where it counts, calm everywhere else. Money is always legible.
   ========================================================================== */

:root {
  /* palette */
  --ink:        #0B1220;   /* near-black navy, primary text on light */
  --navy:       #0F1B33;   /* panel / sidebar base */
  --navy-2:     #16264A;   /* raised navy */
  --navy-line:  #22345C;   /* borders on navy */
  --gold:       #C8A24C;   /* the single accent — used sparingly */
  --gold-soft:  #E7D3A1;
  --paper:      #F7F8FA;   /* app background */
  --card:       #FFFFFF;
  --line:       #E4E8EF;   /* hairlines on light */
  --muted:      #667085;
  --muted-2:    #98A2B3;
  --pos:        #0E7C4F;   /* profit / paid */
  --neg:        #C0392B;   /* owed / loss */
  --warn-bg:    #FDF6E7;
  --warn-line:  #E8C877;
  --info-bg:    #EEF3FB;
  --info-line:  #C3D4F0;

  /* type */
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --r: 10px;    /* radius */
  --r-sm: 7px;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { margin: 0; font-weight: 650; letter-spacing: -0.01em; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 14px; }

/* numbers line up */
.num, td.num, .money { font-variant-numeric: tabular-nums; }

/* ---- layout shell ---- */
.app { display: grid; grid-template-columns: 232px 1fr; height: 100vh; }
.sidebar {
  background: var(--navy);
  color: #C7D2E4;
  display: flex; flex-direction: column;
  border-right: 1px solid var(--navy-line);
}
.brand {
  padding: 20px 20px 16px;
  display: flex; align-items: center; gap: 11px;
  border-bottom: 1px solid var(--navy-line);
}
.brand .mark {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--gold), #A5812F);
  color: var(--ink); font-weight: 800; font-size: 15px;
  display: grid; place-items: center; letter-spacing: -0.5px;
}
.brand .name { color: #fff; font-weight: 700; font-size: 15px; letter-spacing: 0.2px; }
.brand .sub { color: var(--muted-2); font-size: 11px; }

.nav { padding: 12px 10px; display: flex; flex-direction: column; gap: 2px; flex: 1; }
.nav a {
  display: flex; align-items: center; gap: 11px;
  padding: 9px 12px; border-radius: var(--r-sm);
  color: #A9B6CC; text-decoration: none; font-weight: 550; font-size: 13.5px;
  transition: background .12s, color .12s;
}
.nav a:hover { background: var(--navy-2); color: #fff; }
.nav a.active { background: var(--navy-2); color: #fff; }
.nav a.active .ic { color: var(--gold); }
.nav .ic { width: 18px; height: 18px; opacity: .9; display: grid; place-items: center; }
.nav .sep { height: 1px; background: var(--navy-line); margin: 10px 12px; }

.sidebar .foot { padding: 12px; border-top: 1px solid var(--navy-line); }
.who { display: flex; align-items: center; gap: 10px; padding: 4px 8px 10px; }
.who .av { width: 30px; height: 30px; border-radius: 50%; background: var(--navy-2);
  display: grid; place-items: center; color: var(--gold-soft); font-weight: 700; font-size: 12px; }
.who .nm { color: #fff; font-size: 13px; font-weight: 600; }
.who .rl { color: var(--muted-2); font-size: 11px; }

.main { overflow: auto; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(247,248,250,.86); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  padding: 16px 28px; display: flex; align-items: center; justify-content: space-between;
}
.topbar h1 { font-size: 19px; }
.topbar .crumb { color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.content { padding: 24px 28px 60px; }

/* ---- buttons ---- */
.btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 9px 15px; border-radius: var(--r-sm); font-weight: 600; font-size: 13.5px;
  transition: border-color .12s, background .12s, transform .04s;
}
.btn:hover { border-color: #cdd4df; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn.primary:hover { background: #1a2740; }
.btn.gold { background: var(--gold); border-color: #A5812F; color: var(--ink); }
.btn.gold:hover { background: var(--gold-soft); }
.btn.pos { background: var(--pos); border-color: var(--pos); color: #fff; }
.btn.danger { background: var(--neg); border-color: var(--neg); color: #fff; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.sm { padding: 6px 11px; font-size: 12.5px; }
.btn.block { width: 100%; justify-content: center; display: flex; }

/* ---- cards / panels ---- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 18px 20px; }
.card + .card { margin-top: 16px; }
.card h3 { font-size: 14px; margin-bottom: 12px; }
.eyebrow { font-size: 11px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
  color: var(--muted); }

/* stat row */
.stats { display: grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 14px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 18px; }
.stat .k { font-size: 12px; color: var(--muted); font-weight: 600; }
.stat .v { font-size: 24px; font-weight: 700; margin-top: 6px; letter-spacing: -0.02em; }
.stat .v.pos { color: var(--pos); } .stat .v.neg { color: var(--neg); }

/* ---- tables ---- */
table.grid { width: 100%; border-collapse: collapse; }
table.grid th {
  text-align: left; font-size: 11px; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; color: var(--muted);
  padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
table.grid td { padding: 11px 12px; border-bottom: 1px solid var(--line); font-size: 13.5px; }
table.grid tr:hover td { background: #FAFBFC; }
table.grid td.num, table.grid th.num { text-align: right; font-variant-numeric: tabular-nums; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 650; }
.pill.open   { background: #FEF3E2; color: #9A6700; }
.pill.closed { background: #E7F5EE; color: var(--pos); }
.pill.void   { background: #F3E7E6; color: var(--neg); }
.pill.b2b    { background: #EAF0FB; color: #2C4C86; }
.pill.b2c    { background: #F0EEF9; color: #5B4B9A; }

/* ---- forms ---- */
label.field { display: block; margin-bottom: 12px; }
label.field > span { display: block; font-size: 12.5px; font-weight: 600; color: #3A4658; margin-bottom: 5px; }
.input, select.input, textarea.input {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: var(--r-sm);
  background: #fff; color: var(--ink); outline: none; transition: border-color .12s, box-shadow .12s;
}
.input:focus { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(200,162,76,.15); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

/* ---- modal ---- */
.modal-scrim { position: fixed; inset: 0; background: rgba(11,18,32,.55); backdrop-filter: blur(3px);
  display: grid; place-items: center; padding: 24px; z-index: 100; }
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 560px;
  max-height: 88vh; overflow: auto; box-shadow: 0 24px 70px rgba(0,0,0,.4); }
.modal.lg { max-width: 860px; }
.modal .m-head { padding: 18px 22px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; background: #fff; }
.modal .m-body { padding: 20px 22px; }
.modal .m-foot { padding: 16px 22px; border-top: 1px solid var(--line);
  display: flex; gap: 10px; justify-content: flex-end; position: sticky; bottom: 0; background: #fff; }

/* ---- alerts ---- */
.alert { border-radius: var(--r-sm); padding: 11px 14px; font-size: 13px; margin-bottom: 12px; }
.alert.warn { background: var(--warn-bg); border: 1px solid var(--warn-line); color: #7A5B12; }
.alert.info { background: var(--info-bg); border: 1px solid var(--info-line); color: #2C4C86; }
.alert.ok   { background: #ECFAF2; border: 1px solid #9BD9B8; color: #0E6B44; }
.alert.err  { background: #FCEEED; border: 1px solid #E3A9A3; color: #9A2A20; }

/* ---- login ---- */
.login-wrap { display: grid; place-items: center; height: 100vh; background:
  radial-gradient(1200px 600px at 70% -10%, #16264A 0%, #0B1220 60%); }
.login-card { width: 360px; background: #fff; border-radius: 16px; padding: 32px 30px;
  box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.login-card .mark { width: 44px; height: 44px; border-radius: 11px;
  background: linear-gradient(135deg, var(--gold), #A5812F); color: var(--ink);
  font-weight: 800; font-size: 19px; display: grid; place-items: center; margin-bottom: 18px; }
.login-card h1 { font-size: 21px; } .login-card p { color: var(--muted); font-size: 13px; margin: 4px 0 22px; }

/* ---- utility ---- */
.row { display: flex; gap: 10px; align-items: center; }
.between { display: flex; justify-content: space-between; align-items: center; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.pos { color: var(--pos); } .neg { color: var(--neg); }
.right { text-align: right; }
.mt0{margin-top:0}.mt8{margin-top:8px}.mt16{margin-top:16px}.mb0{margin-bottom:0}
.hidden { display: none !important; }
.grow { flex: 1; }
.tag-loc { font-size: 11px; font-weight: 600; color: var(--muted); border: 1px solid var(--line);
  padding: 3px 9px; border-radius: 20px; }

/* checkout ledger */
.ledger { border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; }
.ledger .lg-head { background: #FAFBFC; padding: 8px 14px; font-size: 11px; font-weight: 700;
  letter-spacing: .05em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); }
.ledger .lg-row { display: flex; justify-content: space-between; padding: 8px 14px; font-size: 13.5px;
  font-variant-numeric: tabular-nums; }
.ledger .lg-row.total { border-top: 1px solid var(--line); font-weight: 700; }
.ledger .lg-row.grand { border-top: 2px solid var(--ink); font-weight: 800; font-size: 15px; padding: 12px 14px; }

/* empty state */
.empty { text-align: center; color: var(--muted); padding: 40px 20px; }
.empty .big { font-size: 15px; font-weight: 600; color: #475467; margin-bottom: 4px; }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .form-grid { grid-template-columns: 1fr; }
}