:root {
  --azul: #1e4d8b;
  --azul-oscuro: #163a68;
  --azul-claro: #eaf1fb;
  --azul-tinta: #f5f8fd;
  --gris: #f6f7f9;
  --superficie: #ffffff;
  --borde: #e3e6eb;
  --borde-fuerte: #cdd3db;
  --rojo: #b3261e;
  --rojo-claro: #fbe8e6;
  --verde: #1e7e34;
  --verde-claro: #e5f6e8;
  --texto: #1c222b;
  --texto-tenue: #667085;
  --radio: 10px;
  --radio-sm: 7px;
  --sombra-sm: 0 1px 2px rgba(16, 24, 40, .05);
  --sombra: 0 1px 2px rgba(16, 24, 40, .04), 0 4px 12px rgba(16, 24, 40, .06);
  --sombra-hover: 0 2px 4px rgba(16, 24, 40, .06), 0 8px 20px rgba(16, 24, 40, .09);
}
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--texto);
  background: var(--gris);
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
  line-height: 1.45;
}
a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--azul-oscuro); text-decoration: underline; }

.topbar {
  background: var(--superficie);
  border-bottom: 1px solid var(--borde);
  box-shadow: var(--sombra-sm);
  position: sticky; top: 0; z-index: 10;
}
.topbar-inner {
  max-width: 1140px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
}
.brand {
  font-weight: 700; font-size: 1.1rem; color: var(--azul);
  letter-spacing: -.01em;
}
.topbar nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.topbar nav a {
  color: var(--texto-tenue); font-weight: 600; font-size: .88rem;
  padding: 8px 12px; border-radius: 999px; transition: background .15s ease, color .15s ease;
}
.topbar nav a:hover { background: var(--azul-claro); color: var(--azul-oscuro); text-decoration: none; }
.topbar-user { display: flex; align-items: center; gap: 10px; font-size: .87rem; color: var(--texto-tenue); flex-wrap: wrap; }
.topbar-user select { width: auto; max-width: 180px; }
.topbar-user span { font-weight: 600; color: var(--texto); }
.inline-form { display: inline; }

/* Menú de hamburguesa para pantallas estrechas (checkbox + CSS, sin JS) */
.nav-toggle { display: none; }
.nav-toggle-label {
  display: none; cursor: pointer; padding: 8px; margin-left: auto;
  font-size: 1.4rem; line-height: 1; user-select: none; border-radius: var(--radio-sm);
  transition: background .15s ease;
}
.nav-toggle-label:hover { background: var(--gris); }
@media (max-width: 900px) {
  .topbar-inner { gap: 12px; }
  .nav-toggle-label { display: block; }
  .topbar nav {
    display: none; flex-direction: column; gap: 2px; width: 100%;
    order: 3; flex-basis: 100%;
  }
  .topbar nav a { padding: 10px 12px; border-radius: var(--radio-sm); }
  .nav-toggle:checked ~ .topbar-inner nav { display: flex; }
  .topbar-user { order: 2; margin-left: auto; }
}

.container { max-width: 1140px; margin: 0 auto; padding: 32px 20px 64px; }

h1 { font-size: 1.55rem; font-weight: 700; letter-spacing: -.015em; margin-bottom: 4px; }
.subtitle { color: var(--texto-tenue); margin-top: 0; margin-bottom: 22px; }

.card {
  background: var(--superficie); border: 1px solid var(--borde); border-radius: var(--radio);
  box-shadow: var(--sombra-sm);
  padding: 22px; margin-bottom: 20px;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
@media (max-width: 700px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

label { display: block; font-size: .83rem; font-weight: 600; color: var(--texto-tenue); margin-bottom: 5px; margin-top: 14px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--borde-fuerte); border-radius: var(--radio-sm);
  font-size: 1rem; font-family: inherit; color: var(--texto);
  background: var(--superficie);
  max-width: 100%; /* 16px: evita el zoom automático de iOS Safari al enfocar */
  transition: border-color .15s ease, box-shadow .15s ease;
}
input::placeholder, textarea::placeholder { color: #9aa1ac; }
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--azul); box-shadow: 0 0 0 3px var(--azul-claro);
}
input[type="checkbox"], input[type="radio"] { width: auto; }

fieldset { border: 1px solid var(--borde); border-radius: var(--radio); margin-top: 20px; padding: 8px 18px 18px; }
legend { font-weight: 700; padding: 0 8px; color: var(--azul); font-size: .95rem; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--azul); color: #fff; border: none;
  padding: 11px 20px; min-height: 44px; border-radius: var(--radio-sm); font-size: .95rem; font-weight: 600;
  cursor: pointer; margin-top: 18px; box-shadow: var(--sombra-sm);
  transition: background .15s ease, box-shadow .15s ease, transform .05s ease;
}
.btn:hover { background: var(--azul-oscuro); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-secundario { background: var(--superficie); color: var(--azul); border: 1px solid var(--borde-fuerte); box-shadow: none; }
.btn-secundario:hover { background: var(--azul-tinta); border-color: var(--azul); }
.btn-peligro { background: var(--rojo); }
.btn-peligro:hover { background: #921f19; }
.btn-sm { padding: 8px 14px; min-height: 36px; font-size: .82rem; margin-top: 0; }

.table-wrap { width: 100%; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; margin-bottom: 4px; border: 1px solid var(--borde); border-radius: var(--radio-sm); }
table { width: 100%; border-collapse: collapse; background: var(--superficie); }
th, td { padding: 11px 14px; border-bottom: 1px solid var(--borde); text-align: left; font-size: .9rem; }
th { background: var(--gris); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--texto-tenue); white-space: nowrap; }
tbody tr { transition: background .1s ease; }
tbody tr:hover td { background: var(--azul-tinta); }
tbody tr:last-child td { border-bottom: none; }
@media (max-width: 700px) {
  .table-wrap table { min-width: 560px; } /* fuerza el scroll en vez de aplastar columnas ilegibles */
}

.badge { display: inline-block; padding: 3px 11px; border-radius: 999px; font-size: .74rem; font-weight: 700; letter-spacing: .01em; }
.badge-activo { background: var(--verde-claro); color: var(--verde); }
.badge-anulado { background: var(--rojo-claro); color: var(--rojo); }
.badge-sustituido { background: var(--gris); color: var(--texto-tenue); }

.alert { padding: 11px 16px; border-radius: var(--radio-sm); margin-bottom: 16px; font-size: .9rem; font-weight: 500; }
.alert-ok { background: var(--verde-claro); color: var(--verde); border: 1px solid #b7e2bd; }
.alert-error { background: var(--rojo-claro); color: var(--rojo); border: 1px solid #f2b8b3; }

.login-wrap { max-width: 380px; margin: 10vh auto; }
.login-card { text-align: center; padding: 36px 32px 32px; }
.login-logo { border-radius: 14px; margin-bottom: 14px; box-shadow: var(--sombra); }
.login-card h1 { margin-bottom: 2px; }
.login-card .subtitle { margin-bottom: 24px; }
.login-card form { text-align: left; }

.filtros { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; align-items: flex-end; }
.filtros > div { flex: 1; min-width: 140px; }
.filtros label { margin-top: 0; }
.text-muted { color: var(--texto-tenue); font-size: .85rem; }
.qr-box { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; }
.qr-box img { border: 1px solid var(--borde); border-radius: var(--radio-sm); }
.qr-box a[href^="http"], .qr-box p { overflow-wrap: anywhere; word-break: break-word; }

@media (max-width: 480px) {
  .container { padding: 20px 14px 48px; }
  .card { padding: 16px; }
  th, td { padding: 9px 12px; }
  .login-wrap { margin: 8vh auto; }
  .login-card { padding: 28px 20px 24px; }
  h1 { font-size: 1.35rem; }
}

/* Al imprimir (p. ej. el conductor abre el DeCA e imprime desde el móvil),
   fuera la navegación y los botones: solo interesa el contenido del documento. */
@media print {
  .topbar, .nav-toggle-label, .btn, form button, .alert { display: none !important; }
  body { background: #fff; }
  .card { border: none; padding: 0; box-shadow: none; }
}