/* ===================================================================
   Tokens — derivados del logo Proingelec SAS:
   degradé de azules (cian de ingeniería) a grises azulados y gris
   carbón del rótulo. Fondo claro tipo "plano técnico" impreso: papel
   blanco-hueso con retícula tenue, para que el azul del logo resalte
   como acento sin necesitar un fondo oscuro.
   =================================================================== */
:root {
  --bg:            #F5F7FA;   /* fondo base, blanco-hueso */
  --surface:       #FFFFFF;   /* tarjetas, sidebar */
  --surface-2:     #EEF2F6;   /* hover, inputs */
  --border:        #DCE3EA;

  --blue-bright:   #2E8BC0;   /* punta del logo, algo más oscuro para contraste en claro */
  --blue-mid:      #4F7B96;   /* triángulos intermedios */
  --slate:         #6E7B85;   /* base gris-azul del logo */
  --charcoal:      #3A3F44;   /* rótulo "PROINGELEC SAS" */

  --text:          #212A32;
  --text-muted:    #5B6B78;
  --text-faint:    #94A3AF;

  --accent:        var(--blue-bright);
  --accent-soft:   rgba(46, 139, 192, 0.10);
  --success:       #2E9B63;
  --success-soft:  rgba(46, 155, 99, 0.12);
  --danger:        #D14A3F;
  --danger-soft:   rgba(209, 74, 63, 0.10);

  --font-ui:   'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  /* retícula sutil de "papel de plano" */
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  background-attachment: fixed;
  background-color: var(--bg);
}
body::before {
  content: '';
}

.app {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.brand-logo {
  width: 100%;
  max-width: 200px;
  height: auto;
  display: block;
}
.brand-sub {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: -18px;
  padding-left: 2px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 14.5px;
  font-weight: 500;
  text-align: left;
  padding: 11px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active {
  background: var(--accent-soft);
  color: var(--blue-bright);
}
.nav-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  width: 18px;
}
.nav-item.active .nav-num { color: var(--blue-mid); }

.sidebar-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 12px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.user-info { min-width: 0; }
.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.user-role {
  font-size: 11px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- Pantalla de login ---------- */
.login-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  z-index: 200;
  padding: 20px;
}
.login-screen[hidden] { display: none; }
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 12px 32px rgba(30, 50, 70, 0.08);
}
.login-logo { width: 200px; margin: 0 auto 20px; display: block; }
.login-card h1 { font-size: 18px; margin: 0 0 4px; }
.login-sub { color: var(--text-muted); font-size: 13.5px; margin: 0 0 22px; }
.login-card form { text-align: left; }
.login-btn { width: 100%; margin-top: 4px; }
.login-error {
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 13px;
  padding: 9px 12px;
  border-radius: var(--radius);
  margin: 4px 0 14px;
}
.login-error[hidden] { display: none; }

/* ---------- Acciones en tabla de empleados ---------- */
.acciones-cell { display: flex; gap: 6px; white-space: nowrap; }
.change-password-card { padding: 20px; margin-top: 20px; }
.change-password-card h3 { margin: 0 0 14px; font-size: 14px; }

/* ---------- Main ---------- */
.main {
  padding: 40px 48px;
  max-width: 1180px;
}

.view { display: none; }
.view.active { display: block; }

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  gap: 20px;
  flex-wrap: wrap;
}
.view-header h1 {
  font-size: 26px;
  font-weight: 600;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.view-sub {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 10px 18px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: filter 0.15s, background 0.15s;
  white-space: nowrap;
}
.btn-accent {
  background: var(--accent);
  color: #FFFFFF;
}
.btn-accent:hover { filter: brightness(1.08); }
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-faint); }
.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 13px;
  padding: 4px 8px;
}
.btn-icon:hover { color: var(--danger); }

/* ---------- Tables ---------- */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.data-table th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--surface-2); }
.data-table .num, .data-table td.num { text-align: right; font-family: var(--font-mono); }
.data-table .mono, td.mono { font-family: var(--font-mono); }

.empty-state {
  padding: 32px 16px;
  text-align: center;
  color: var(--text-faint);
  font-size: 13.5px;
}

.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.tag-activo { background: var(--success-soft); color: var(--success); }
.tag-retirado { background: var(--danger-soft); color: var(--danger); }

/* ---------- Forms ---------- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
.field input, .field select {
  font-family: var(--font-ui);
  font-size: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 9px 12px;
}
.field input:focus, .field select:focus {
  outline: none;
  border-color: var(--blue-bright);
}
.field input[type="number"], .field input[type="date"] { font-family: var(--font-mono); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
.form-section-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
  padding-top: 14px;
  margin: 4px 0 12px;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.inline-form {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.inline-form .field { margin-bottom: 0; min-width: 160px; }
.inline-form .btn { align-self: flex-end; }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(10, 15, 22, 0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
  padding: 20px;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 24px 26px 26px;
}
.modal-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 18px;
}
.modal-head h2 { font-size: 17px; margin: 0; font-weight: 600; }
.modal-close {
  background: none; border: none; color: var(--text-faint);
  font-size: 22px; cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--text); }
.modal-actions {
  display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px;
}

/* ---------- Payroll result cards ---------- */
.payroll-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.summary-card .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.summary-card .value {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--blue-bright);
}

/* ---------- Botón de texto en tabla (ej. Ver comprobante) ---------- */
.btn-link {
  background: none;
  border: none;
  color: var(--blue-mid);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}
.btn-link:hover { color: var(--blue-bright); text-decoration: underline; }

/* ---------- Comprobante de pago (imprimible) ---------- */
.modal-comprobante { max-width: 640px; }
.modal-head-actions { display: flex; align-items: center; gap: 10px; }

.comprobante {
  font-size: 13.5px;
  color: var(--text);
}
.comprobante-logo {
  width: 220px;
  margin-bottom: 6px;
}
.comprobante-titulo {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 18px;
  color: var(--charcoal);
}
.comprobante-datos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px 16px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.comprobante-datos .dato-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin-bottom: 2px;
}
.comprobante-datos .dato-valor { font-family: var(--font-mono); font-weight: 600; }

.comprobante-columnas {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 18px;
}
.comprobante-columnas h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin: 0 0 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
.comprobante-linea {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  gap: 8px;
}
.comprobante-linea .concepto { color: var(--text-muted); }
.comprobante-linea .valor { font-family: var(--font-mono); }
.comprobante-linea.subtotal {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 8px;
  font-weight: 600;
}
.comprobante-neto {
  background: var(--accent-soft);
  border: 1px solid var(--blue-bright);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}
.comprobante-neto .label { font-size: 13px; }
.comprobante-neto .valor { font-family: var(--font-mono); font-size: 19px; color: var(--blue-bright); }

@media print {
  @page { margin: 12mm; }
  body {
    background: #fff !important;
    background-image: none !important;
  }
  /* display:none saca el elemento del flujo por completo (a diferencia de
     visibility:hidden, que sigue reservando el espacio en la página y era
     la causa de que saliera una primera página en blanco/con el fondo). */
  #appRoot, #loginScreen, .toast, .modal-backdrop { display: none !important; }

  /* Solo el comprobante que está abierto se vuelve a mostrar, en flujo
     normal de documento (no como overlay), para que ocupe una sola página
     empezando arriba del todo. */
  #modal-comprobante:not([hidden]) {
    display: block !important;
    position: static !important;
    background: none !important;
    padding: 0 !important;
  }
  #modal-comprobante:not([hidden]) .modal {
    position: static !important;
    box-shadow: none !important;
    border: none !important;
    max-width: none !important;
    max-height: none !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: visible !important;
  }
  .no-print { display: none !important; }
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px; right: 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 13.5px;
  z-index: 100;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.toast.error { border-color: var(--danger); color: var(--danger); }
.toast.success { border-color: var(--success); color: var(--success); }
.toast[hidden] { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    flex-direction: row;
    align-items: center;
    padding: 14px 16px;
    overflow-x: auto;
    gap: 16px;
  }
  .brand-logo { max-width: 120px; }
  .brand-sub { display: none; }
  .nav { flex-direction: row; }
  .sidebar-foot { display: none; }
  .main { padding: 24px 20px; }
  .grid-2 { grid-template-columns: 1fr; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* Visible keyboard focus */
button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--blue-bright);
  outline-offset: 2px;
}