/* login.css - DIGI - Sistema de Gestión de Documentos */

/* ===== VARIABLES CSS ===== */
:root {
  --color-primario: #2563eb;
  --color-primario-hover: #1d4ed8;
  --color-primario-oscuro: #1e40af;
  --color-secundario: #64748b;
  --color-acento: #0ea5e9;
  --color-acento-claro: #38bdf8;
  --color-exito: #059669;
  --color-advertencia: #d97706;
  --color-error: #dc2626;
  --texto-primario: #1e293b;
  --texto-secundario: #64748b;
  --texto-claro: #94a3b8;
  --fondo: #f8fafc;
  --fondo-tarjeta: #ffffff;
  --color-borde: #e2e8f0;
  --sombra: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --sombra-ligera: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --sombra-azul: 0 10px 25px rgba(37, 99, 235, 0.3);
  --radio-borde: 16px;
  --transicion: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transicion-rapida: all 0.2s ease;
  --familia-fuente: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

/* ===== RESET BÁSICO ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ===== BODY Y FONDO PRINCIPAL ===== */
body {
  font-family: var(--familia-fuente);
  background: linear-gradient(135deg,
      #1e3a8a 0%,
      #3730a3 25%,
      #1e40af 50%,
      #1e3a8a 75%,
      #312e81 100%);
  background-size: 400% 400%;
  animation: cambioGradiente 15s ease infinite;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.6;
  color: var(--texto-primario);
  overflow-x: hidden;
  position: relative;
}

/* Efectos adicionales del fondo */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 20% 80%,
      rgba(14, 165, 233, 0.1) 0%,
      transparent 50%),
    radial-gradient(circle at 80% 20%,
      rgba(37, 99, 235, 0.1) 0%,
      transparent 50%),
    radial-gradient(circle at 40% 40%,
      rgba(59, 130, 246, 0.05) 0%,
      transparent 50%);
  pointer-events: none;
  z-index: 1;
}

body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg,
      transparent 48%,
      rgba(255, 255, 255, 0.02) 49%,
      rgba(255, 255, 255, 0.02) 51%,
      transparent 52%),
    linear-gradient(-45deg,
      transparent 48%,
      rgba(255, 255, 255, 0.02) 49%,
      rgba(255, 255, 255, 0.02) 51%,
      transparent 52%);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 2;
  opacity: 0.3;
}

/* ===== ANIMACIONES PRINCIPALES ===== */
@keyframes cambioGradiente {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes flotacion {

  0%,
  100% {
    transform: translateY(0px) rotate(0deg) scale(1);
    opacity: 0.4;
  }

  33% {
    transform: translateY(-30px) rotate(120deg) scale(1.1);
    opacity: 0.7;
  }

  66% {
    transform: translateY(30px) rotate(240deg) scale(0.9);
    opacity: 0.5;
  }
}

@keyframes deslizarArriba {
  from {
    opacity: 0;
    transform: translateY(60px) scale(0.95);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes brilloBorde {

  0%,
  100% {
    background-position: 200% 0;
  }

  50% {
    background-position: -200% 0;
  }
}

@keyframes pulsoLogo {

  0%,
  100% {
    transform: scale(1);
    box-shadow: var(--sombra-azul);
  }

  50% {
    transform: scale(1.05);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.4);
  }
}

@keyframes brilloLogo {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }

  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

@keyframes deslizarAbajo {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes girar {
  to {
    transform: rotate(360deg);
  }
}

@keyframes deslizarIzquierda {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes deslizarDerecha {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ===== CONTENEDORES PRINCIPALES ===== */
.contenedor-login {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  z-index: 10;
}

.fondo-login {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 3;
}

.formas-geometricas {
  position: relative;
  width: 100%;
  height: 100%;
}

.forma {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg,
      rgba(37, 99, 235, 0.15),
      rgba(14, 165, 233, 0.1),
      rgba(37, 99, 235, 0.05));
  backdrop-filter: blur(10px);
  animation: flotacion 20s infinite ease-in-out;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.forma-1 {
  width: min(400px, 25vw);
  height: min(400px, 25vw);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.forma-2 {
  width: min(250px, 15vw);
  height: min(250px, 15vw);
  top: 60%;
  right: 10%;
  animation-delay: -7s;
}

.forma-3 {
  width: min(180px, 12vw);
  height: min(180px, 12vw);
  bottom: 20%;
  left: 60%;
  animation-delay: -14s;
}

.forma-4 {
  width: min(120px, 8vw);
  height: min(120px, 8vw);
  top: 30%;
  left: 80%;
  animation-delay: -3s;
  display: none;
}

.forma-5 {
  width: min(200px, 13vw);
  height: min(200px, 13vw);
  bottom: 10%;
  right: 70%;
  animation-delay: -10s;
  display: none;
}

@media (min-width: 1200px) {

  .forma-4,
  .forma-5 {
    display: block;
  }
}

/* ===== CONTENEDOR PRINCIPAL UNIFICADO ===== */
.contenedor-principal {
  background: var(--fondo-tarjeta);
  border-radius: var(--radio-borde);
  box-shadow: var(--sombra);
  padding: 0;
  width: 100%;
  max-width: 1000px;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: deslizarArriba 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  position: relative;
  z-index: 20;
  display: flex;
}

.contenedor-principal::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
      var(--color-primario),
      var(--color-acento),
      var(--color-primario));
  background-size: 200% 100%;
  animation: brilloBorde 3s ease-in-out infinite;
  z-index: 1;
}

.contenedor-principal:hover {
  transform: translateY(-2px);
  box-shadow: 0 35px 60px -12px rgba(0, 0, 0, 0.3);
}

/* ===== PANEL DE LOGIN ===== */
.panel-login {
  flex: 1;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 2;
  animation: deslizarIzquierda 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.encabezado-login {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 2rem;
}

.logo-principal {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg,
      var(--color-primario),
      var(--color-acento));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--sombra-azul);
  position: relative;
  overflow: hidden;
  animation: pulsoLogo 3s infinite;
  border: 3px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 1rem;
  padding: 15px;
}

.imagen-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 50%;
  z-index: 2;
  position: relative;
}

.logo-principal::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg,
      transparent,
      rgba(255, 255, 255, 0.2),
      transparent);
  transform: rotate(45deg);
  animation: brilloLogo 4s infinite;
  z-index: 1;
}

.contenido-encabezado {
  text-align: center;
}

.contenido-encabezado h1 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg,
      var(--color-primario),
      var(--color-acento));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contenido-encabezado p {
  color: var(--texto-secundario);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== PANEL VISUAL ===== */
.panel-visual {
  flex: 0 0 400px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: 2.5rem;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  animation: deslizarDerecha 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}

@media (min-width: 1024px) {
  .panel-visual {
    display: flex;
  }
}

.panel-visual::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 70%,
      rgba(37, 99, 235, 0.05) 0%,
      transparent 50%),
    radial-gradient(circle at 70% 30%,
      rgba(14, 165, 233, 0.05) 0%,
      transparent 50%);
  pointer-events: none;
}

/* ===== ILUSTRACIÓN DE DOCUMENTOS ===== */
.ilustracion-documentos {
  position: relative;
  margin-bottom: 2rem;
  z-index: 1;
}

.pila-documentos {
  position: relative;
  width: 200px;
  height: 150px;
  margin: 0 auto 2rem;
}

.documento {
  position: absolute;
  width: 120px;
  height: 160px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--color-borde);
  transition: var(--transicion);
}

.doc-1 {
  top: 0;
  left: 0;
  z-index: 3;
  animation: flotacionDoc1 4s ease-in-out infinite;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.doc-2 {
  top: 20px;
  left: 40px;
  z-index: 2;
  animation: flotacionDoc2 4s ease-in-out infinite 1s;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.doc-3 {
  top: 40px;
  left: 80px;
  z-index: 1;
  animation: flotacionDoc3 4s ease-in-out infinite 2s;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

@keyframes flotacionDoc1 {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-10px) rotate(2deg);
  }
}

@keyframes flotacionDoc2 {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-15px) rotate(-2deg);
  }
}

@keyframes flotacionDoc3 {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-8px) rotate(1deg);
  }
}

.encabezado-doc {
  height: 25px;
  background: linear-gradient(90deg,
      var(--color-primario),
      var(--color-acento));
  border-radius: 8px 8px 0 0;
  position: relative;
  overflow: hidden;
}

.encabezado-doc::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
}

.lineas-doc {
  padding: 15px 12px;
}

.linea {
  height: 3px;
  background: var(--color-borde);
  margin-bottom: 8px;
  border-radius: 2px;
  animation: crecimientoLinea 2s ease-in-out infinite;
}

.linea.corta {
  width: 60%;
}

@keyframes crecimientoLinea {

  0%,
  100% {
    opacity: 0.3;
  }

  50% {
    opacity: 1;
  }
}

.icono-doc {
  position: absolute;
  bottom: 15px;
  right: 12px;
  width: 20px;
  height: 20px;
  background: var(--color-primario);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 10px;
}

/* ===== FLECHAS DE FLUJO ===== */
.flechas-flujo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 300px;
  height: 100px;
}

.flecha {
  position: absolute;
  color: var(--color-acento);
  font-size: 1.5rem;
  animation: pulsoFlecha 2s ease-in-out infinite;
}

.flecha-1 {
  top: 20px;
  left: 140px;
  animation-delay: 0.5s;
}

.flecha-2 {
  top: 60px;
  left: 180px;
  animation-delay: 1.5s;
}

@keyframes pulsoFlecha {

  0%,
  100% {
    opacity: 0.3;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* ===== PUNTOS DE PROGRESO ===== */
.puntos-proceso {
  position: absolute;
  bottom: 50px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 15px;
}

.punto {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-borde);
  animation: progresoPunto 3s ease-in-out infinite;
}

.punto-1 {
  animation-delay: 0s;
}

.punto-2 {
  animation-delay: 1s;
}

.punto-3 {
  animation-delay: 2s;
}

@keyframes progresoPunto {

  0%,
  66%,
  100% {
    background: var(--color-borde);
    transform: scale(1);
  }

  33% {
    background: var(--color-primario);
    transform: scale(1.3);
  }
}

/* ===== CONTENIDO VISUAL ===== */
.contenido-visual {
  text-align: center;
  z-index: 1;
  position: relative;
}

.contenido-visual h3 {
  color: var(--texto-primario);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg,
      var(--color-primario),
      var(--color-acento));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contenido-visual p {
  color: var(--texto-secundario);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  max-width: 300px;
}

/* ===== ESTADÍSTICAS PREVIEW ===== */
.vista-estadisticas {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 2rem;
}

.item-estadistica {
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  box-shadow: var(--sombra-ligera);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: var(--transicion);
  animation: flotacionEstadistica 3s ease-in-out infinite;
}

.item-estadistica:nth-child(1) {
  animation-delay: 0s;
}

.item-estadistica:nth-child(2) {
  animation-delay: 1s;
}

.item-estadistica:nth-child(3) {
  animation-delay: 2s;
}

@keyframes flotacionEstadistica {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-5px);
  }
}

.item-estadistica:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(37, 99, 235, 0.15);
}

.numero-estadistica {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primario);
  margin-bottom: 0.25rem;
}

.etiqueta-estadistica {
  font-size: 0.75rem;
  color: var(--texto-secundario);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== ALERTAS ===== */
.alerta {
  display: flex;
  align-items: center;
  padding: 1rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  position: relative;
  animation: deslizarAbajo 0.5s ease-out;
  border: 1px solid;
}

.alerta i {
  margin-right: 0.75rem;
  font-size: 1rem;
}

.alerta-error {
  background: rgba(220, 38, 38, 0.1);
  color: var(--color-error);
  border-color: rgba(220, 38, 38, 0.2);
}

.alerta-exito {
  background: rgba(5, 150, 105, 0.1);
  color: var(--color-exito);
  border-color: rgba(5, 150, 105, 0.2);
}

.alerta-advertencia {
  background: rgba(217, 119, 6, 0.1);
  color: var(--color-advertencia);
  border-color: rgba(217, 119, 6, 0.2);
}

.cerrar-alerta {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  margin-left: auto;
  padding: 0.25rem;
  border-radius: 4px;
  transition: var(--transicion);
}

.cerrar-alerta:hover {
  background: rgba(0, 0, 0, 0.1);
}

/* ===== FORMULARIO ===== */
.grupo-campo {
  margin-bottom: 1.5rem;
}

.grupo-campo label {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--texto-primario);
  font-size: 0.875rem;
}

.grupo-campo label i {
  margin-right: 0.5rem;
  color: var(--color-primario);
  width: 16px;
}

.campo-formulario {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--color-borde);
  border-radius: 12px;
  font-size: 0.875rem;
  background: var(--fondo);
  color: var(--texto-primario);
  transition: var(--transicion);
  font-family: inherit;
  font-weight: 500;
}

.campo-formulario:focus {
  outline: none;
  border-color: var(--color-primario);
  background: var(--fondo-tarjeta);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  transform: translateY(-1px);
}

.campo-formulario:hover:not(:focus):not(:disabled) {
  border-color: var(--color-acento);
}

.campo-formulario:disabled {
  background: #f1f5f9;
  color: #94a3b8;
  cursor: not-allowed;
  border-color: #cbd5e1;
}

.contenedor-password {
  position: relative;
}

.mostrar-password {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--texto-secundario);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 6px;
  transition: var(--transicion);
  z-index: 10;
}

.mostrar-password:hover {
  color: var(--color-primario);
  background: rgba(37, 99, 235, 0.1);
}

.opciones-formulario {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.volver {
  width: 100%;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg,
      var(--color-primario),
      var(--color-acento));
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicion);
  position: relative;
  overflow: hidden;
  margin-bottom: 1.5rem;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-decoration: none;
}

.volver::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.2),
      transparent);
  transition: left 0.5s;
}

.volver:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--sombra-azul);
  background: linear-gradient(135deg,
      var(--color-primario-hover),
      var(--color-primario-oscuro));
  letter-spacing: 1px;
}

.volver:hover:not(:disabled)::before {
  left: 100%;
}

.volver:active:not(:disabled) {
  transform: translateY(0);
}

.volver:disabled {
  background: var(--texto-secundario);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.contenedor-checkbox {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--texto-secundario);
  position: relative;
  padding-left: 1.75rem;
  font-weight: 500;
}

.contenedor-checkbox:hover {
  color: var(--texto-primario);
}

.contenedor-checkbox input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.marca-checkbox {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 18px;
  width: 18px;
  background: var(--fondo);
  border: 2px solid var(--color-borde);
  border-radius: 4px;
  transition: var(--transicion);
}

.contenedor-checkbox:hover .marca-checkbox {
  border-color: var(--color-primario);
}

.contenedor-checkbox input:checked~.marca-checkbox {
  background: var(--color-primario);
  border-color: var(--color-primario);
}

.marca-checkbox:after {
  content: "";
  position: absolute;
  display: none;
  left: 5px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.contenedor-checkbox input:checked~.marca-checkbox:after {
  display: block;
}

/* ===== BOTÓN DE LOGIN ===== */
.boton-login {
  width: 100%;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg,
      var(--color-primario),
      var(--color-acento));
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicion);
  position: relative;
  overflow: hidden;
  margin-bottom: 1.5rem;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.boton-login::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.2),
      transparent);
  transition: left 0.5s;
}

.boton-login:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--sombra-azul);
  background: linear-gradient(135deg,
      var(--color-primario-hover),
      var(--color-primario-oscuro));
  letter-spacing: 1px;
}

.boton-login:hover:not(:disabled)::before {
  left: 100%;
}

.boton-login:active:not(:disabled) {
  transform: translateY(0);
}

.boton-login:disabled {
  background: var(--texto-secundario);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.texto-boton {
  transition: var(--transicion);
}

.cargador-boton {
  position: absolute;
  display: none;
}

.boton-login.cargando .texto-boton {
  opacity: 0;
}

.boton-login.cargando .cargador-boton {
  display: block;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: girar 1s linear infinite;
}

/* ===== FOOTER ===== */
.pie-login {
  text-align: center;
  color: var(--texto-secundario);
  font-size: 0.8rem;
  border-top: 1px solid var(--color-borde);
  padding-top: 1rem;
  margin-top: auto;
}

.pie-login p {
  margin-bottom: 0.25rem;
  font-weight: 500;
}

/* ===== ACCESIBILIDAD ===== */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus styles para accesibilidad */
.campo-formulario:focus-visible,
.boton-login:focus-visible,
.mostrar-password:focus-visible,
.contenedor-checkbox:focus-visible {
  outline: 2px solid var(--color-primario);
  outline-offset: 2px;
}

/* ===== MODO OSCURO ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --texto-primario: #f1f5f9;
    --texto-secundario: #94a3b8;
    --fondo: #0f172a;
    --fondo-tarjeta: #1e293b;
    --color-borde: #334155;
  }

  body {
    background: linear-gradient(135deg,
        #0f172a 0%,
        #1e293b 25%,
        #0f172a 50%,
        #1e293b 75%,
        #0c1227 100%);
  }

  .contenedor-principal {
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .panel-visual {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  }

  .documento {
    background: rgba(30, 41, 59, 0.9);
    border-color: #334155;
  }

  .doc-1 {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  }

  .doc-2 {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  }

  .doc-3 {
    background: linear-gradient(135deg, #0c1227 0%, #0f172a 100%);
  }

  .item-estadistica {
    background: rgba(30, 41, 59, 0.8);
    border-color: #334155;
  }

  .linea {
    background: #475569;
  }
}

/* ===== MEJORAS PARA IMPRESIÓN ===== */
@media print {
  body {
    background: white !important;
  }

  .fondo-login,
  .formas-geometricas,
  .panel-visual {
    display: none !important;
  }

  .contenedor-principal {
    box-shadow: none !important;
    border: 1px solid #000 !important;
    background: white !important;
  }

  .panel-login {
    padding: 2rem !important;
  }
}