:root {
  --paper: #F0ECDF;
  --paper-raise: #FBF9F2;
  --ink: #1C231E;
  --ink-soft: #59614F;
  --ink-faint: #8B8F7C;
  --line: rgba(28,35,30,0.14);
  --accent: #AD7526;
  --accent-ink: #FFFFFF;
  --accent-wash: rgba(173,117,38,0.12);
  --success: #3F7A4E;
  --success-wash: rgba(63,122,78,0.13);
  --warning: #A85A22;
  --warning-wash: rgba(168,90,34,0.13);
  --critical: #A6362B;
  --critical-wash: rgba(166,54,43,0.12);
  --radius: 14px;
  --shadow: 0 1px 2px rgba(28,35,30,0.06), 0 4px 16px rgba(28,35,30,0.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #131A15;
    --paper-raise: #1B241C;
    --ink: #ECE9DD;
    --ink-soft: #ABB29E;
    --ink-faint: #6E7568;
    --line: rgba(236,233,221,0.13);
    --accent: #D9A24E;
    --accent-ink: #201404;
    --accent-wash: rgba(217,162,78,0.16);
    --success: #74C98A;
    --success-wash: rgba(116,201,138,0.14);
    --warning: #E08A4E;
    --warning-wash: rgba(224,138,78,0.14);
    --critical: #E2685C;
    --critical-wash: rgba(226,104,92,0.14);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #131A15; --paper-raise: #1B241C; --ink: #ECE9DD; --ink-soft: #ABB29E; --ink-faint: #6E7568;
  --line: rgba(236,233,221,0.13); --accent: #D9A24E; --accent-ink: #201404; --accent-wash: rgba(217,162,78,0.16);
  --success: #74C98A; --success-wash: rgba(116,201,138,0.14); --warning: #E08A4E; --warning-wash: rgba(224,138,78,0.14);
  --critical: #E2685C; --critical-wash: rgba(226,104,92,0.14); color-scheme: dark;
}
:root[data-theme="light"] {
  --paper: #F0ECDF; --paper-raise: #FBF9F2; --ink: #1C231E; --ink-soft: #59614F; --ink-faint: #8B8F7C;
  --line: rgba(28,35,30,0.14); --accent: #AD7526; --accent-ink: #FFFFFF; --accent-wash: rgba(173,117,38,0.12);
  --success: #3F7A4E; --success-wash: rgba(63,122,78,0.13); --warning: #A85A22; --warning-wash: rgba(168,90,34,0.13);
  --critical: #A6362B; --critical-wash: rgba(166,54,43,0.12); color-scheme: light;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.display { font-family: Georgia, "Iowan Old Style", "Palatino Linotype", serif; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

header.top {
  position: sticky; top: 0; z-index: 20;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 14px 16px 0;
}
.brand { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.brand h1 { font-size: 1.15rem; margin: 0; font-weight: 600; letter-spacing: 0.01em; }
.brand .sub { font-size: 0.78rem; color: var(--ink-faint); }

nav.tabs { display: flex; gap: 4px; overflow-x: auto; padding-bottom: 10px; scrollbar-width: none; }
nav.tabs::-webkit-scrollbar { display: none; }
nav.tabs a, nav.tabs button {
  flex: 0 0 auto; border: none; background: transparent; color: var(--ink-soft); text-decoration: none;
  font-size: 0.86rem; font-weight: 600; padding: 8px 14px; border-radius: 999px; cursor: pointer;
  white-space: nowrap; display: inline-block;
}
nav.tabs a.active, nav.tabs button.active { background: var(--accent); color: var(--accent-ink); }
nav.tabs a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

main { flex: 1; padding: 16px; padding-bottom: 40px; max-width: 720px; width: 100%; margin: 0 auto; }
main.wide { max-width: 1080px; }

h2.section-title { font-size: 0.98rem; margin: 4px 0 12px; font-weight: 600; }
p.hint { color: var(--ink-faint); font-size: 0.8rem; line-height: 1.5; margin: -6px 0 16px; }

.card {
  background: var(--paper-raise); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px;
}
.stack { display: flex; flex-direction: column; gap: 10px; }
.row { display: flex; gap: 10px; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.mb { margin-bottom: 14px; }

.grid-produtos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 14px; }
@media (min-width: 480px) { .grid-produtos { grid-template-columns: repeat(3, 1fr); } }
.produto-card {
  background: var(--paper-raise); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px; display: flex; flex-direction: column; gap: 8px; box-shadow: var(--shadow);
}
.produto-card .nome { font-weight: 600; font-size: 0.88rem; }
.produto-card .preco { color: var(--ink-soft); font-size: 0.8rem; }

input[type=text], input[type=number], input[type=tel], input[type=password], input[type=date], input[type=file], select, textarea {
  width: 100%; border: 1px solid var(--line); background: var(--paper-raise); color: var(--ink);
  border-radius: 10px; padding: 10px 12px; font-size: 0.92rem; font-family: inherit;
}
label.field-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); display: block; margin-bottom: 4px; }
.field { margin-bottom: 12px; }
.field:last-child { margin-bottom: 0; }

.btn {
  border: none; border-radius: 10px; padding: 10px 16px; font-size: 0.88rem; font-weight: 600; cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--ink-soft); border: 1px solid var(--line); }
.btn-danger { background: var(--critical-wash); color: var(--critical); }
.btn-success { background: var(--success-wash); color: var(--success); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 10px; font-size: 0.78rem; border-radius: 8px; }

.paymethods { display: flex; gap: 8px; flex-wrap: wrap; }
.paymethods button {
  flex: 1; min-width: 84px; padding: 10px 8px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--paper-raise); color: var(--ink); font-size: 0.82rem; font-weight: 600; cursor: pointer;
}
.paymethods button.selected { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

.cartbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  background: var(--paper-raise); border-top: 1px solid var(--line);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  display: flex; align-items: center; gap: 12px;
  max-width: 720px; margin: 0 auto;
}
.cartbar .total { flex: 1; }
.cartbar .total .label { font-size: 0.7rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.05em; }
.cartbar .total .value { font-size: 1.15rem; font-weight: 700; }

ul.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
ul.list li {
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  background: var(--paper-raise); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
}
.pill {
  display: inline-flex; align-items: center; padding: 2px 9px; border-radius: 999px; font-size: 0.7rem; font-weight: 700;
  white-space: nowrap;
}
.pill-ok { background: var(--success-wash); color: var(--success); }
.pill-warn { background: var(--warning-wash); color: var(--warning); }
.pill-bad { background: var(--critical-wash); color: var(--critical); }
.pill-neutral { background: var(--accent-wash); color: var(--accent); }

.stat-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; margin-bottom: 16px; }
@media (min-width: 480px) { .stat-grid { grid-template-columns: repeat(4,1fr); } }
.stat { background: var(--paper-raise); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px; box-shadow: var(--shadow); }
.stat .k { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); margin-bottom: 4px; }
.stat .v { font-size: 1.25rem; font-weight: 700; }

.empty { text-align: center; color: var(--ink-faint); font-size: 0.85rem; padding: 24px 10px; }
.divider { height: 1px; background: var(--line); margin: 16px 0; border: none; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(10px);
  background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 999px; font-size: 0.82rem;
  font-weight: 600; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s;
  z-index: 50; max-width: 90%; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.err { background: var(--critical); color: #fff; }
.foot-note { font-size: 0.76rem; color: var(--ink-faint); line-height: 1.6; margin-top: 18px; }
.actions-row { display: flex; gap: 8px; flex-wrap: wrap; }

table.data { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
table.data th, table.data td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
table.data th { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); font-weight: 600; }
table.data tbody tr:hover { background: var(--accent-wash); }
.table-wrap { overflow-x: auto; }

.scan-input-wrap { position: relative; }
.scan-input-wrap input { font-size: 1.1rem; padding: 14px 44px 14px 14px; }
.scan-icon { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); color: var(--ink-faint); font-size: 1.1rem; }
.scan-modo-tag {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.76rem; font-weight: 700; color: var(--accent);
  background: var(--accent-wash); padding: 5px 10px; border-radius: 999px; margin-bottom: 8px;
}

.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
}
.login-card { width: 100%; max-width: 340px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }