:root {
  --red: #d71321;
  --red-dark: #a80d19;
  --ink: #1f2023;
  --body: #3c3d40;
  --muted: #6b6c70;
  --bg: #f3f3f4;
  --card: #ffffff;
  --line: #e2e2e5;
  --dark: #16171a;
  --ok: #1d7a3e;
  --ok-bg: #e5f4e4;
  --warn: #8a5a00;
  --warn-bg: #f9eeda;
  --bad: #a80d19;
  --bad-bg: #fbebeb;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--body); font: 400 16px/1.5 var(--font); padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
a { color: var(--red-dark); }
h1, h2, h3 { color: var(--ink); margin: 0; line-height: 1.2; }
h1 { font-size: 24px; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }
p { margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

/* Barra superior */
.top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 16px; padding: 10px max(16px, env(safe-area-inset-left)); background: var(--dark); color: #fff; }
.brand { display: flex; align-items: baseline; gap: 8px; color: #fff; text-decoration: none; }
.brand-mark { font-weight: 800; font-style: italic; letter-spacing: .5px; font-size: 20px; }
.brand-mark b { background: var(--red); padding: 0 6px; margin-left: 2px; transform: skewX(-12deg); display: inline-block; }
.brand-sub { font-size: 13px; color: #b9bac0; text-transform: uppercase; letter-spacing: 1.2px; }
.who { margin-left: auto; font-size: 13px; color: #b9bac0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 40vw; }
.nav { display: flex; gap: 4px; }
.nav a { color: #e4e4e6; text-decoration: none; padding: 8px 12px; font-size: 15px; border-radius: 6px; }
.nav a.on { background: rgba(255,255,255,.12); color: #fff; }
.nav [hidden] { display: none; }

/* Navegación inferior en celular */
@media (max-width: 760px) {
  .nav { position: fixed; left: 0; right: 0; bottom: 0; background: var(--dark); justify-content: space-around; padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); border-top: 1px solid #2b2c31; }
  .nav a { flex: 1; text-align: center; font-size: 14px; padding: 10px 4px; }
  .who { max-width: 45vw; }
}
@media (min-width: 761px) { body { padding-bottom: 32px; } }

/* Contenido */
.view { max-width: 980px; margin: 0 auto; padding: 20px 16px; outline: none; }
.head { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 16px; }
.head h1 { margin-right: auto; }
.back { display: inline-block; margin-bottom: 8px; font-size: 14px; text-decoration: none; }
.stack { display: grid; gap: 16px; }
.grid2 { display: grid; gap: 16px; grid-template-columns: 1fr; align-items: start; }
@media (min-width: 761px) { .grid2 { grid-template-columns: 1fr 1fr; } }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; min-width: 0; }
.card > h2 { margin-bottom: 12px; }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 0 18px; border: 1px solid transparent; border-radius: 8px; background: var(--red); color: #fff; font: 600 15px var(--font); text-decoration: none; cursor: pointer; }
.btn:hover { background: var(--red-dark); }
.btn.alt { background: #fff; color: var(--ink); border-color: #c9c9cc; }
.btn.alt:hover { border-color: var(--ink); }
.btn.wa { background: #1d7a3e; }
.btn.wa:hover { background: #155c2e; }
.btn.sm { min-height: 36px; padding: 0 12px; font-size: 14px; }
.btn[disabled] { opacity: .6; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 2px; }
.view:focus, .view:focus-visible { outline: none; }

/* Indicadores */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; border-top: 4px solid var(--line); }
.tile b { display: block; font-size: 28px; color: var(--ink); line-height: 1.1; }
.tile span { font-size: 14px; color: var(--muted); }
.tile.vencido { border-top-color: var(--bad); }
.tile.por_vencer { border-top-color: #d99a1a; }
.tile.al_dia { border-top-color: var(--ok); }

.chip { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.chip-vencido { background: var(--bad-bg); color: var(--bad); }
.chip-por_vencer { background: var(--warn-bg); color: var(--warn); }
.chip-al_dia { background: var(--ok-bg); color: var(--ok); }
.chip-sin_datos, .chip-muted { background: #ececee; color: var(--muted); }

/* Listas */
.list { display: grid; gap: 10px; }
.item { display: flex; gap: 12px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; text-decoration: none; color: inherit; min-width: 0; }
a.item:hover { border-color: #b5b5b9; }
.item .main { flex: 1; min-width: 0; }
.item .fld select { min-height: 36px; padding: 4px 8px; font-size: 14px; }
ol.small { margin: 0 0 8px; padding-left: 20px; }
.item .t { font-weight: 600; color: var(--ink); }
.item .s { font-size: 14px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; }
.plate { display: inline-block; font: 700 14px/1 ui-monospace, Menlo, Consolas, monospace; letter-spacing: 1px; background: #fff; color: var(--ink); border: 2px solid var(--ink); border-radius: 4px; padding: 4px 6px; white-space: nowrap; }
.due { display: grid; gap: 10px; }
.due .item { flex-wrap: wrap; }
.due .actions { display: flex; gap: 8px; flex-wrap: wrap; }
@media (max-width: 560px) { .due .actions { width: 100%; } .due .actions .btn { flex: 1; } }

.search { width: 100%; height: 48px; padding: 0 14px; border: 1px solid #c9c9cc; border-radius: 8px; font: 16px var(--font); margin-bottom: 12px; background: #fff; }

/* Datos */
.dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.dl dt { color: var(--muted); font-size: 14px; }
.dl dd { margin: 0; color: var(--ink); overflow-wrap: anywhere; }

/* Historial */
.svc { border-left: 3px solid var(--red); padding: 4px 0 4px 14px; }
.svc + .svc { margin-top: 16px; }
.svc .when { font-size: 14px; color: var(--muted); }
.svc summary { cursor: pointer; color: var(--red-dark); font-size: 14px; margin-top: 6px; }
.svc .internal { background: #fff7e0; border-radius: 6px; padding: 6px 10px; font-size: 14px; }
.pre { white-space: pre-line; }

/* QR */
.qr { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.qr img { width: 148px; height: 148px; image-rendering: pixelated; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.qr .link { font: 13px ui-monospace, Menlo, monospace; overflow-wrap: anywhere; color: var(--muted); }

/* Formularios */
form.f { display: grid; gap: 14px; grid-template-columns: 1fr; }
@media (min-width: 761px) { form.f { grid-template-columns: 1fr 1fr; } }
.fld { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.fld.full, form.f .sec, form.f .msg, form.f .bar { grid-column: 1 / -1; }
.fld label { font-size: 14px; font-weight: 600; color: var(--ink); }
.fld .req { color: var(--red); }
.fld input, .fld select, .fld textarea { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #c9c9cc; border-radius: 8px; font: 16px var(--font); background: #fff; color: var(--ink); }
.fld textarea { min-height: 88px; resize: vertical; }
.fld .help { font-size: 13px; color: var(--muted); }
.fld .err { font-size: 13px; color: var(--bad); }
.fld.bad input, .fld.bad select, .fld.bad textarea { border-color: var(--bad); }
.fld.check { flex-direction: row; align-items: flex-start; gap: 10px; }
.fld.check input { width: 22px; min-height: 22px; height: 22px; margin-top: 2px; flex: none; }
.fld.check label { font-weight: 400; }
form.f .sec { font-size: 13px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; color: var(--muted); border-top: 1px solid var(--line); padding-top: 14px; margin-top: 4px; }
.msg { padding: 10px 12px; border-radius: 8px; background: var(--bad-bg); color: var(--bad); font-size: 15px; }
.msg.ok { background: var(--ok-bg); color: var(--ok); }
.bar { display: flex; gap: 8px; flex-wrap: wrap; }

.mb { margin-bottom: 16px; }
.mt { margin-top: 12px; }
.empty { text-align: center; padding: 28px 16px; color: var(--muted); }

/* Tarjeta para imprimir */
.print-area { display: none; }
@media print {
  body { background: #fff; padding: 0; }
  .top, .nav, .view { display: none !important; }
  .print-area { display: block; }
  .pcard { width: 85mm; border: 1px solid #000; border-radius: 4mm; padding: 5mm; margin: 10mm auto; text-align: center; font-family: var(--font); color: #000; }
  .pcard img { width: 45mm; height: 45mm; image-rendering: pixelated; }
  .pcard .shop { font-weight: 800; font-size: 14pt; }
  .pcard .plate { font-size: 13pt; margin: 2mm 0; }
  .pcard p { font-size: 9pt; }
}