:root {
  --marca: #1f4f8f;
  --bg: #f4f2ee;
  --panel: #ffffff;
  --tinta: #1d1f23;
  --suave: #6b6f78;
  --linea: #e2ded6;
  --ok: #1d7a4c;
  --warn: #a56a00;
  --err: #b3261e;
  --radio: 10px;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  color: var(--tinta);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); font-size: 15px; line-height: 1.45; }
a { color: var(--marca); }
h1, h2, h3 { margin: 0 0 .6rem; font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: 1.35rem; } h2 { font-size: 1.1rem; } h3 { font-size: .95rem; }
.mono { font-family: var(--mono); font-size: .88em; }
.suave { color: var(--suave); }
.err { color: var(--err); }

/* Layout */
.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.side { background: var(--tinta); color: #e9e7e2; padding: 20px 14px; display: flex; flex-direction: column; gap: 4px; }
.side .logo { font-weight: 600; font-size: 1rem; padding: 0 8px 14px; border-bottom: 1px solid #ffffff1f; margin-bottom: 10px; }
.side .logo small { display: block; color: #9a9ca3; font-weight: 400; font-size: .78rem; margin-top: 2px; }
.side a { color: inherit; text-decoration: none; padding: 8px 10px; border-radius: 7px; font-size: .93rem; }
.side a:hover { background: #ffffff12; }
.side a.on { background: var(--marca); color: #fff; }
.side .pie { margin-top: auto; font-size: .8rem; color: #9a9ca3; padding: 8px; }
.side select { width: 100%; margin: 6px 0 12px; background: #2b2e34; color: #fff; border-color: #ffffff2a; }
main { padding: 28px clamp(16px, 3vw, 40px); max-width: 1180px; width: 100%; }
.cab { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }

.card { background: var(--panel); border: 1px solid var(--linea); border-radius: var(--radio); padding: 18px; margin-bottom: 16px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.stat b { display: block; font-size: 1.4rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat span { color: var(--suave); font-size: .85rem; }

/* Forms */
label { display: flex; flex-direction: column; gap: 4px; font-size: .82rem; color: var(--suave); font-weight: 500; }
input, select, textarea {
  font: inherit; font-size: .95rem; color: var(--tinta); padding: 8px 10px;
  border: 1px solid var(--linea); border-radius: 7px; background: #fff; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--marca) 35%, transparent); border-color: var(--marca); }
.fila { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.fila > * { flex: 1 1 160px; }
.check { flex-direction: row; align-items: center; gap: 6px; color: var(--tinta); }
button, .btn {
  font: inherit; font-weight: 500; font-size: .9rem; padding: 8px 14px; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--linea); background: #fff; color: var(--tinta); white-space: nowrap; text-decoration: none; display: inline-block;
}
button:hover { border-color: var(--suave); }
button.pri { background: var(--marca); border-color: var(--marca); color: #fff; }
button.pri:hover { filter: brightness(1.08); }
button.peligro { color: var(--err); }
button.mini { padding: 4px 9px; font-size: .8rem; }
button:disabled { opacity: .55; cursor: wait; }

/* Tables */
.tabla-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th { text-align: left; font-weight: 500; color: var(--suave); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; padding: 8px; border-bottom: 1px solid var(--linea); }
td { padding: 9px 8px; border-bottom: 1px solid var(--linea); vertical-align: middle; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 0; }
.acciones { display: flex; gap: 4px; justify-content: flex-end; flex-wrap: wrap; }

.tag { display: inline-block; font-size: .74rem; padding: 2px 8px; border-radius: 99px; font-weight: 500; }
.tag.valid { background: #e3f3ea; color: var(--ok); }
.tag.canceled { background: #fbe7e5; color: var(--err); }
.tag.pending, .tag.verifying { background: #fdf1d9; color: var(--warn); }
.tag.test { background: #ece9fb; color: #4b3bb3; }

/* Invoice builder */
.partida { display: grid; grid-template-columns: 2.4fr 1fr .7fr 1fr auto; gap: 8px; align-items: end; padding: 10px 0; border-bottom: 1px dashed var(--linea); }
.partida:last-child { border-bottom: 0; }
.totales { margin-left: auto; width: min(340px, 100%); font-variant-numeric: tabular-nums; }
.totales div { display: flex; justify-content: space-between; padding: 4px 0; }
.totales .gran { font-weight: 600; font-size: 1.15rem; border-top: 1px solid var(--linea); margin-top: 6px; padding-top: 8px; }

/* Login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: min(380px, 100%); padding: 28px; }
.login h1 { color: var(--marca); }

#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(120px); background: var(--tinta); color: #fff; padding: 10px 18px; border-radius: 8px; transition: transform .25s; max-width: 90vw; z-index: 50; }
#toast.on { transform: translateX(-50%) translateY(0); }
#toast.error { background: var(--err); }
dialog { border: 0; border-radius: var(--radio); padding: 0; width: min(520px, 94vw); }
dialog::backdrop { background: #0006; }
#modal-body { padding: 22px; display: flex; flex-direction: column; gap: 12px; }
.aviso { background: #fdf1d9; border: 1px solid #f0d9a6; color: #6e4800; padding: 10px 12px; border-radius: 8px; font-size: .88rem; }

@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .side { flex-direction: row; flex-wrap: wrap; padding: 10px; align-items: center; }
  .side .logo { border: 0; padding: 4px 8px; margin: 0; width: 100%; }
  .side .pie { display: none; }
  .side select { margin: 4px 0; }
  .partida { grid-template-columns: 1fr 1fr; }
  .partida > :first-child { grid-column: 1 / -1; }
}