:root {
  --color-primary: #1d4ed8;
  --color-primary-dark: #1739a8;
  --color-primary-light: #e4ecf7;
  --color-dark: #111827;
  --color-text: #374151;
  --color-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6f8;
  --color-border: #e5e7eb;
  --color-success: #157347;
  --color-error: #c8102e;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 10px;
  --shadow: 0 4px 16px rgba(17, 24, 39, 0.08);
  --container-width: 1180px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--color-text);
  background: var(--color-bg-alt);
  line-height: 1.55;
}

h1, h2, h3 { color: var(--color-dark); margin: 0 0 0.5em; }
h1 { font-size: 1.7rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
a { color: var(--color-primary); text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }

.container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }

.btn {
  display: inline-block;
  padding: 0.6em 1.2em;
  border-radius: var(--radius);
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn:hover, .btn:focus { text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover, .btn-primary:focus { background: var(--color-primary-dark); color: #fff; }
.btn-secondary { background: transparent; color: var(--color-dark); border-color: var(--color-border); }
.btn-secondary:hover, .btn-secondary:focus { border-color: var(--color-primary); color: var(--color-primary); }
.btn-danger { background: var(--color-error); color: #fff; }
.btn-sm { padding: 0.4em 0.9em; font-size: 0.85rem; }

.app-header { background: var(--color-dark); color: #fff; position: relative; }
.app-header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 8px; }
.app-header .logo { color: #fff; font-weight: 700; }
.app-nav { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.app-nav a { color: #cbd2dc; font-weight: 500; font-size: 0.92rem; }
.app-nav a:hover, .app-nav a:focus { color: #fff; }
.app-main { padding: 32px 0 64px; }

.hero {
  padding: 64px 0 72px;
  background: linear-gradient(180deg, #eef2fb 0%, var(--color-bg-alt) 100%);
}
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero-eyebrow {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  padding: 0.35em 0.9em;
  border-radius: 999px;
  margin-bottom: 16px;
}
.hero-text h1 { font-size: 2.4rem; line-height: 1.15; margin-bottom: 0.4em; }
.hero-subtitle { color: var(--color-muted); font-size: 1.05rem; max-width: 46ch; }
.hero-checklist { list-style: none; margin: 20px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.hero-checklist li { display: flex; align-items: center; gap: 8px; font-size: 0.95rem; color: var(--color-text); font-weight: 500; }
.hero-checklist li::before {
  content: "✓";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-success);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.hero-image { position: relative; }
.hero-image-glow {
  position: absolute;
  inset: -6%;
  background: radial-gradient(circle, rgba(29, 78, 216, 0.18), transparent 70%);
  z-index: 0;
}
.hero-image img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 20px 45px rgba(17, 24, 39, 0.16);
}

.features { padding: 64px 0; }
.features h2 { text-align: center; margin-bottom: 28px; font-size: 1.6rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.feature-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.feature-icon { font-size: 1.6rem; margin-bottom: 10px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 0.4em; color: var(--color-primary-dark); }
.feature-card p { margin: 0; color: var(--color-muted); font-size: 0.92rem; }

.cta-band { background: var(--color-dark); padding: 40px 0; }
.cta-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin-bottom: 0.2em; font-size: 1.4rem; }
.cta-band p { color: #cbd2dc; margin: 0; }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-image { order: -1; }
  .cta-band-inner { flex-direction: column; text-align: center; }
}

/* Botón cuadrado del menú móvil, oculto en escritorio */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 8px;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 1px; }

.nav-dropdown { position: relative; }
.nav-dropdown summary {
  cursor: pointer; list-style: none; color: #cbd2dc; font-weight: 500; font-size: 0.92rem;
}
.nav-dropdown summary::-webkit-details-marker { display: none; }
.nav-dropdown summary:hover, .nav-dropdown summary:focus { color: #fff; }
.nav-dropdown summary::after { content: "\25BE"; margin-left: 4px; font-size: 0.7em; }
.nav-dropdown-menu {
  position: absolute; top: 100%; left: 0; margin-top: 8px;
  background: var(--color-dark); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 8px;
  padding: 6px 0; min-width: 160px; box-shadow: var(--shadow); z-index: 60;
}
.nav-dropdown-menu a { display: block; padding: 8px 16px; }

.link-button { background: none; border: none; padding: 0; color: inherit; font: inherit; cursor: pointer; text-decoration: underline; }
.link-button.danger { color: var(--color-error); }
.logout-form { display: inline; }

.auth-panel { max-width: 420px; margin: 60px auto; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 32px; }
.auth-form .form-group { margin-bottom: 16px; }
.auth-secondary { margin-top: 16px; font-size: 0.9rem; color: var(--color-muted); }

.page-heading { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; }

.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin: 20px 0; }

/* Tarjetas de selección de informe: el botón siempre queda a la misma
   altura, sin importar si el título ocupa una o dos líneas. */
.informe-card { display: flex; flex-direction: column; }
.informe-card h2 { min-height: 2.6em; }
.informe-card .form-group { flex-grow: 1; }
.informe-card button { align-self: flex-start; }
.dashboard-card { display: block; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; text-align: center; }
.dashboard-card h2 { font-size: 2rem; color: var(--color-primary); margin-bottom: 0.2em; }
.dashboard-card p { color: var(--color-muted); margin: 0; }
.dashboard-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 16px; }

.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 24px; }
.data-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.data-table th, .data-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--color-border); font-size: 0.9rem; }
.data-table th { background: var(--color-bg-alt); font-weight: 600; color: var(--color-dark); }
.data-table tfoot td { border-top: 2px solid var(--color-border); border-bottom: none; background: var(--color-bg-alt); }
.table-actions { display: flex; gap: 10px; white-space: nowrap; }

.badge { display: inline-block; padding: 0.2em 0.7em; border-radius: 999px; font-size: 0.78rem; font-weight: 600; text-transform: capitalize; }
.badge-borrador, .badge-pendiente { background: #fdf1d6; color: #92600a; }
.badge-enviado, .badge-en_remesa, .badge-generada, .badge-remesado { background: #e4ecf7; color: #1d4ed8; }
.badge-aceptado, .badge-pagada, .badge-ingreso, .badge-cobrado, .badge-cobrada, .badge-activo { background: #e3f6ea; color: #157347; }
.badge-rechazado, .badge-anulada, .badge-vencida, .badge-gasto, .badge-anulado, .badge-cancelado, .badge-devuelto { background: #fbe1e4; color: #a10d24; }

.admin-form, .filter-form { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 20px; margin-bottom: 24px; }
.filter-form { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; }
.filter-form .form-group { margin-bottom: 0; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.form-group-wide { grid-column: 1 / -1; }
.form-grid-cajas-alineadas .form-group { display: flex; flex-direction: column; justify-content: flex-end; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 5px; color: var(--color-dark); font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.55em 0.75em; border: 1px solid var(--color-border); border-radius: 8px; font: inherit; background: #fff;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; }
.field-hint { display: block; font-size: 0.82rem; color: var(--color-muted); margin-top: 4px; }

.form-status { margin-top: 12px; font-weight: 600; }
.form-status.error { color: var(--color-error); }
.form-status.success { color: var(--color-success); }

.lineas-table input, .lineas-table select { min-width: 70px; }
.lineas-table td { vertical-align: top; padding: 6px; }
.lineas-table input[name="descripcion"] { min-width: 220px; }

.resumen-totales { max-width: 320px; margin-left: auto; background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 16px 20px; }
.resumen-totales p { display: flex; justify-content: space-between; margin: 0 0 6px; font-size: 0.9rem; }
.resumen-totales .total-final { font-size: 1.2rem; font-weight: 700; color: var(--color-dark); border-top: 1px solid var(--color-border); padding-top: 8px; margin-top: 8px; }

@media (max-width: 720px) {
  .nav-toggle { display: flex; }

  .app-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow);
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    z-index: 50;
  }
  .app-nav.is-open { display: flex; }
  .app-nav a, .app-nav .logout-form { padding: 14px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .app-nav .link-button { display: block; width: 100%; text-align: left; }

  .nav-dropdown summary { padding: 14px 20px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
  .nav-dropdown-menu {
    position: static; margin-top: 0; box-shadow: none; border: none; border-radius: 0;
    background: rgba(255, 255, 255, 0.04); padding: 0;
  }
  .nav-dropdown-menu a { padding: 12px 20px 12px 36px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
}

/* --- Gráficos (utils/graficos.js + views/partials/grafico.ejs) --- */
.graficos-grid { display: grid; align-items: start; grid-template-columns: repeat(auto-fill, minmax(min(100%, 460px), 1fr)); gap: 16px; margin: 16px 0 24px; }
.grafico-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius); padding: 16px 18px; min-width: 0; }
.grafico-titulo { margin: 0; font-size: 1.05rem; }
.grafico-subtitulo { margin: 2px 0 10px; color: var(--color-muted); font-size: 0.88rem; }
.grafico-leyenda { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0 0 8px; padding: 0; font-size: 0.85rem; color: var(--color-text); }
.grafico-leyenda li { display: inline-flex; align-items: center; gap: 6px; }
.grafico-muestra { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.grafico-svg { width: 100%; height: auto; display: block; font-variant-numeric: tabular-nums; }
.grafico-svg .grafico-zona { cursor: default; }
.grafico-svg a .grafico-zona { cursor: pointer; }
.grafico-svg .grafico-zona:hover { fill: rgba(17, 24, 39, 0.04); }
.grafico-total { margin: 6px 0 0; font-size: 0.88rem; color: var(--color-text); }
.grafico-vacio { color: var(--color-muted); margin: 12px 0; }
.grafico-datos { margin-top: 8px; font-size: 0.88rem; }
.grafico-datos summary { cursor: pointer; color: var(--color-primary); }
.grafico-datos .data-table { font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.cifras-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; }
.cifra { display: flex; flex-direction: column; padding: 12px; border: 1px solid var(--color-border); border-radius: 8px; color: var(--color-dark); }
.cifra:hover { text-decoration: none; background: var(--color-bg-alt); }
.cifra-valor { font-size: 1.8rem; font-weight: 600; line-height: 1.1; }
.cifra-etiqueta { color: var(--color-muted); font-size: 0.85rem; }
.cifra-mal .cifra-valor { color: #b42323; }
.graficos-filtros { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
.graficos-filtros .form-group { margin: 0; }
.graficos-seccion { margin-top: 8px; }

/* Envío por WhatsApp (views/contactos/whatsapp-envio.ejs): vista previa del
   mensaje como una burbuja de WhatsApp, con la imagen encima del texto. */
.whatsapp-mensaje { max-width: 520px; background: #e7fbe9; border-color: #c6ecca; }
.whatsapp-imagen { display: block; max-width: 100%; max-height: 320px; border-radius: 8px; margin-bottom: 10px; }
.whatsapp-texto { white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.5; }
.whatsapp-botones { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.casilla-linea { display: flex; align-items: center; gap: 8px; }
/* Envío por correo (views/contactos/email-envio.ejs): barra de progreso. */
.barra-progreso { height: 10px; background: #e5e7eb; border-radius: 999px; overflow: hidden; max-width: 520px; }
.barra-progreso span { display: block; height: 100%; background: #1d4ed8; border-radius: 999px; }
/* Estadísticas del correo masivo (views/contactos/_email-kpis.ejs y email-estadisticas.ejs). */
.kpis-email { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 8px 0 12px; }
.kpi-email { background: #fff; border: 1px solid var(--color-border, #e5e7eb); border-radius: 10px; padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; }
.kpi-email.kpi-alerta { border-color: #f59e0b; background: #fffbeb; }
.kpi-cifra { font-size: 1.6rem; font-weight: 700; line-height: 1.1; }
.kpi-nombre { font-weight: 600; font-size: 0.9rem; }
.kpi-nota { font-size: 0.78rem; color: #6b7280; }
.grafica-email { display: flex; align-items: flex-end; gap: 3px; height: 180px; padding: 10px; background: #fff; border: 1px solid var(--color-border, #e5e7eb); border-radius: 10px; overflow-x: auto; }
.grafica-dia { flex: 1 0 14px; display: flex; flex-direction: column; align-items: center; height: 100%; }
.grafica-barras { flex: 1; width: 100%; display: flex; align-items: flex-end; justify-content: center; gap: 1px; }
.grafica-barras span { width: 45%; min-height: 1px; border-radius: 2px 2px 0 0; }
.barra-enviados, .leyenda-enviados { background: #93c5fd; }
.barra-abiertos, .leyenda-abiertos { background: #1d4ed8; }
.grafica-etiqueta { font-size: 0.65rem; color: #6b7280; margin-top: 4px; }
.leyenda { display: inline-block; width: 10px; height: 10px; border-radius: 2px; vertical-align: middle; }