:root {
  --azul: #1c3f6e;
  --azul-claro: #2f5f9e;
  --rojo: #b3282d;
  --gris-fondo: #f4f6f9;
  --gris-borde: #dfe3e8;
  --verde: #1e7e34;
  --amarillo: #c99a00;
  --texto: #22303f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--gris-fondo);
  color: var(--texto);
}
a { text-decoration: none; color: inherit; }

/* ---- Login ---- */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--azul) 0%, var(--azul-claro) 100%);
}
.login-box {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  width: 380px;
  box-shadow: 0 20px 45px rgba(0,0,0,.25);
}
.login-box h1 { font-size: 20px; margin-bottom: 4px; color: var(--azul); }
.login-box p.subtitle { margin-top: 0; color: #667; font-size: 14px; margin-bottom: 24px; }
.login-box label { display:block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.login-box input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--gris-borde);
  border-radius: 6px; font-size: 14px;
}
.login-box button {
  margin-top: 22px; width: 100%; padding: 11px; background: var(--azul);
  color: #fff; border: none; border-radius: 6px; font-size: 15px; cursor: pointer;
}
.login-box button:hover { background: var(--azul-claro); }
.error-box { background: #fdecea; color: var(--rojo); padding: 10px 12px; border-radius: 6px; font-size: 13px; margin-bottom: 6px; }
.demo-hint { margin-top: 18px; font-size: 12px; color: #889; text-align: center; }

/* ---- Accesibilidad ---- */
.skip-link {
  position: absolute; left: -999px; top: 0; background: #fff; color: var(--azul);
  padding: 10px 16px; z-index: 1000; border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }
a:focus, button:focus, input:focus, select:focus, textarea:focus {
  outline: 3px solid #7fb2ff; outline-offset: 1px;
}

/* ---- App shell ---- */
.app-shell { display: flex; min-height: 100vh; }
.menu-toggle {
  display: none; position: fixed; top: 12px; left: 12px; z-index: 500;
  background: var(--azul); color: #fff; border: none; padding: 9px 14px;
  border-radius: 6px; font-size: 14px;
}
.sidebar {
  width: 230px; background: var(--azul); color: #fff;
  display: flex; flex-direction: column; padding: 20px 0; flex-shrink: 0;
}
.sidebar .brand { font-size: 17px; font-weight: 700; padding: 0 20px 20px; }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.sidebar nav a { padding: 11px 20px; font-size: 14px; color: #cfe0f2; border-left: 3px solid transparent; }
.sidebar nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar nav a.active { background: rgba(255,255,255,.12); color: #fff; border-left-color: var(--rojo); font-weight: 600; }
.sidebar-footer { padding: 16px 20px 0; border-top: 1px solid rgba(255,255,255,.15); margin-top: 12px; }
.user-chip { display: flex; flex-direction: column; font-size: 13px; margin-bottom: 10px; }
.user-chip span { color: #a9c2de; font-size: 12px; }
.logout-link { font-size: 13px; color: #ffb3b3; }

.content { flex: 1; padding: 28px 34px; max-width: 1200px; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; flex-wrap: wrap; gap: 10px; }
.page-header h1 { font-size: 22px; margin: 0; color: var(--azul); }
.page-header .subtitle { color: #667; font-size: 13px; margin-top: 4px; }

.btn { display: inline-block; padding: 9px 16px; border-radius: 6px; font-size: 14px; border: none; cursor: pointer; }
.btn-primary { background: var(--azul); color: #fff; }
.btn-primary:hover { background: var(--azul-claro); }
.btn-secondary { background: #eef1f5; color: var(--texto); border: 1px solid var(--gris-borde); }
.btn-danger { background: var(--rojo); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.card { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); margin-bottom: 20px; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.kpi-card { background: #fff; border-radius: 10px; padding: 18px 20px; box-shadow: 0 1px 3px rgba(0,0,0,.08); border-left: 4px solid var(--azul); }
.kpi-card .kpi-value { font-size: 26px; font-weight: 700; color: var(--azul); }
.kpi-card .kpi-label { font-size: 12.5px; color: #667; margin-top: 4px; }
.kpi-card.alert { border-left-color: var(--rojo); }
.kpi-card.alert .kpi-value { color: var(--rojo); }
.kpi-card.ok { border-left-color: var(--verde); }
.kpi-card.ok .kpi-value { color: var(--verde); }
.kpi-card.warn { border-left-color: var(--amarillo); }
.kpi-card.warn .kpi-value { color: var(--amarillo); }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--gris-borde); }
th { background: #f0f3f7; color: #445; font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .3px; }
tr:hover td { background: #fafcff; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 600; }
.badge-pendiente, .badge-recibido, .badge-ingresado { background: #fff3cd; color: #8a6500; }
.badge-pagado, .badge-resuelto, .badge-aprobado, .badge-finalizado, .badge-cerrado { background: #d9f0dd; color: var(--verde); }
.badge-vencido, .badge-rechazado, .badge-observado { background: #fdecea; color: var(--rojo); }
.badge-proceso, .badge-analisis, .badge-derivado, .badge-convenio { background: #dbe8fb; color: var(--azul); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--gris-borde); border-radius: 6px; font-size: 14px; font-family: inherit;
}
.form-actions { margin-top: 22px; display: flex; gap: 10px; }

.flash { padding: 12px 16px; border-radius: 6px; margin-bottom: 18px; font-size: 14px; }
.flash.success { background: #d9f0dd; color: var(--verde); }
.flash.error { background: #fdecea; color: var(--rojo); }

.filters { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.filters input, .filters select { padding: 8px 10px; border: 1px solid var(--gris-borde); border-radius: 6px; font-size: 13.5px; }
.empty-state { text-align: center; padding: 40px 20px; color: #889; }
.actions-cell { display: flex; gap: 8px; flex-wrap: wrap; }
.text-muted { color: #889; font-size: 12.5px; }
.table-scroll { width: 100%; overflow-x: auto; }
.map-container { height: 320px; border-radius: 8px; overflow: hidden; border: 1px solid var(--gris-borde); margin-top: 10px; }

/* ---- Responsive: smartphone y tablet ---- */
@media (max-width: 880px) {
  .menu-toggle { display: block; }
  .sidebar {
    position: fixed; left: -260px; top: 0; bottom: 0; z-index: 400;
    transition: left .2s ease; width: 230px; box-shadow: 3px 0 12px rgba(0,0,0,.2);
  }
  .sidebar.open { left: 0; }
  .content { padding: 70px 16px 30px; width: 100%; }
  .form-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; }
  table { font-size: 12.5px; }
  th, td { padding: 8px; }
}
@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
  .login-box { width: 90vw; padding: 26px; }
  .filters { flex-direction: column; align-items: stretch; }
}