:root {
  --bg: #eef1ea;
  --surface: #ffffff;
  --surface-2: #f6f7f1;
  --ink: #16211a;
  --ink-muted: #5b6a5e;
  --border: #d9e0cd;
  --border-soft: #e6ead9;
  --accent: #9c6d2a;
  --accent-ink: #ffffff;
  --good: #2f7d4f;
  --good-bg: #e2f1e6;
  --warn: #a86a0a;
  --warn-bg: #faecc9;
  --bad: #b23b3b;
  --bad-bg: #f8e1df;
  --shadow: 0 1px 2px rgba(20, 30, 20, 0.06), 0 8px 24px rgba(20, 30, 20, 0.06);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #10150f;
    --surface: #171e17;
    --surface-2: #1c241b;
    --ink: #e9ede3;
    --ink-muted: #9aab97;
    --border: #2b352a;
    --border-soft: #232c22;
    --accent: #dfab5c;
    --accent-ink: #1a1305;
    --good: #57b57d;
    --good-bg: rgba(87, 181, 125, 0.14);
    --warn: #e2ac47;
    --warn-bg: rgba(226, 172, 71, 0.14);
    --bad: #e4776f;
    --bad-bg: rgba(228, 119, 111, 0.14);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}
:root[data-theme="dark"] {
  --bg: #10150f; --surface: #171e17; --surface-2: #1c241b; --ink: #e9ede3;
  --ink-muted: #9aab97; --border: #2b352a; --border-soft: #232c22; --accent: #dfab5c;
  --accent-ink: #1a1305; --good: #57b57d; --good-bg: rgba(87, 181, 125, 0.14);
  --warn: #e2ac47; --warn-bg: rgba(226, 172, 71, 0.14); --bad: #e4776f;
  --bad-bg: rgba(228, 119, 111, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--ink); font-family: var(--font-body);
  font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased;
}
#app { max-width: 1180px; margin: 0 auto; padding: 28px 20px 80px; }
.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
a { color: inherit; }
button { font: inherit; }
::selection { background: var(--accent); color: var(--accent-ink); }

header.top {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 14px; margin-bottom: 22px;
}
.brand { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.brand h1 {
  font-family: var(--font-display); font-weight: 600; font-size: 30px; margin: 0;
  letter-spacing: -0.01em; text-wrap: balance;
}
.brand .tag { color: var(--ink-muted); font-size: 14px; }
.header-actions { display: flex; gap: 8px; align-items: center; }
.header-actions a, .header-actions button {
  background: none; border: 1px solid var(--border); color: var(--ink-muted);
  border-radius: 7px; padding: 6px 12px; cursor: pointer; text-decoration: none; font-size: 13px;
}
.header-actions a:hover, .header-actions button:hover { border-color: var(--accent); color: var(--ink); }

nav.tabs {
  display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 24px;
  overflow-x: auto;
}
nav.tabs button {
  background: none; border: none; padding: 10px 16px; font-size: 14.5px; font-weight: 600;
  color: var(--ink-muted); cursor: pointer; border-bottom: 2px solid transparent;
  white-space: nowrap; margin-bottom: -1px;
}
nav.tabs button:hover { color: var(--ink); }
nav.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }
nav.tabs button .count { color: var(--warn); font-family: var(--font-mono); margin-left: 4px; }

.readonly-banner, .warn-banner {
  background: var(--warn-bg); color: var(--warn); border: 1px solid var(--warn);
  border-radius: 10px; padding: 10px 14px; font-size: 13.5px; margin-bottom: 18px;
}
.error-banner {
  background: var(--bad-bg); color: var(--bad); border: 1px solid var(--bad);
  border-radius: 10px; padding: 10px 14px; font-size: 13.5px; margin-bottom: 18px;
}

h2.section-title { font-family: var(--font-display); font-weight: 600; font-size: 20px; margin: 0 0 14px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin-bottom: 26px; }
.kpi {
  background: var(--surface); border: 1px solid var(--border-soft); border-radius: 14px;
  padding: 16px 18px; box-shadow: var(--shadow);
}
.kpi .label { font-size: 12.5px; color: var(--ink-muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; }
.kpi .value { font-family: var(--font-mono); font-size: 24px; font-weight: 600; }
.kpi .value.good { color: var(--good); }
.kpi .value.warn { color: var(--warn); }
.kpi .sub { font-size: 12px; color: var(--ink-muted); margin-top: 4px; }
.kpi.accent { background: linear-gradient(160deg, var(--accent), var(--accent)); color: var(--accent-ink); border: none; }
.kpi.accent .label { color: var(--accent-ink); opacity: 0.85; }
.kpi.accent .value { color: var(--accent-ink); }

.card {
  background: var(--surface); border: 1px solid var(--border-soft); border-radius: 14px;
  box-shadow: var(--shadow); padding: 18px; margin-bottom: 20px;
}
.card h3 { font-family: var(--font-display); font-size: 16.5px; font-weight: 600; margin: 0 0 12px; }
.empty-state { color: var(--ink-muted); font-size: 14px; padding: 10px 2px; }

.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar input[type="text"] { flex: 1 1 220px; min-width: 160px; }
input[type="text"], input[type="number"], input[type="date"], input[type="tel"], input[type="password"], select, textarea {
  font: inherit; font-size: 16px; background: var(--surface); color: var(--ink); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; width: 100%;
}
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 1px;
}
label { font-size: 13px; color: var(--ink-muted); display: block; margin-bottom: 4px; }
.field { margin-bottom: 12px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; border-radius: 8px; padding: 8px 14px;
  font-size: 13.5px; font-weight: 600; cursor: pointer; border: 1px solid var(--border);
  background: var(--surface); color: var(--ink);
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: transparent; background: none; padding: 6px 8px; }
.btn-ghost:hover { background: var(--surface-2); }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.actions-cell { display: flex; gap: 6px; flex-wrap: wrap; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border-soft); border-radius: 14px; background: var(--surface); box-shadow: var(--shadow); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  text-align: left; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--ink-muted); font-weight: 600; padding: 12px 14px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td { padding: 11px 14px; border-bottom: 1px solid var(--border-soft); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--surface-2); }
td.cliente { font-weight: 600; }
.nota-chip { font-weight: 400; font-size: 11.5px; color: var(--ink-muted); margin-top: 2px; }
td.muted, .muted { color: var(--ink-muted); }

.pill {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.pill.good { background: var(--good-bg); color: var(--good); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.neutral { background: var(--surface-2); color: var(--ink-muted); border: 1px solid var(--border); }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(10, 14, 10, 0.45); display: flex;
  align-items: center; justify-content: center; padding: 20px; z-index: 50;
}
.modal {
  background: var(--surface); border-radius: 16px; padding: 24px; width: 100%; max-width: 460px;
  box-shadow: var(--shadow); max-height: 88vh; overflow-y: auto;
}
.modal.wide { max-width: 620px; }
.modal h3 { font-family: var(--font-display); font-size: 19px; margin: 0 0 4px; }
.modal .sub { color: var(--ink-muted); font-size: 13px; margin-bottom: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

.hist-item { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border-soft); font-size: 13.5px; }
.hist-item:last-child { border-bottom: none; }
.hist-item .fecha { color: var(--ink-muted); font-family: var(--font-mono); font-size: 12.5px; min-width: 78px; }
.hist-item .monto { font-family: var(--font-mono); font-weight: 600; margin-left: auto; white-space: nowrap; }
.hist-item .monto.pos { color: var(--good); }

footer.foot { text-align: center; color: var(--ink-muted); font-size: 12px; margin-top: 40px; }

/* Login screen */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, var(--bg), var(--surface-2));
}
.login-card {
  background: var(--surface); border: 1px solid var(--border-soft); border-radius: 16px;
  box-shadow: var(--shadow); padding: 32px; width: 100%; max-width: 360px;
}
.login-card h1 { font-family: var(--font-display); font-size: 24px; margin: 0 0 6px; }
.login-card p.sub { color: var(--ink-muted); font-size: 13px; margin: 0 0 20px; }
.login-card .field { margin-bottom: 16px; }
.login-error { color: var(--bad); font-size: 13px; margin-bottom: 12px; min-height: 16px; }

@media (prefers-reduced-motion: no-preference) {
  .card, .kpi, .modal { transition: box-shadow 0.15s ease; }
}
@media (max-width: 640px) {
  .field-row { grid-template-columns: 1fr; }
  #app { padding: 16px 12px 60px; }
}