body {
  font-family: "Karla", sans-serif;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
  z-index: -1;
}

.container { 
  max-width: 450px;
  z-index: 1;
}

.brand-wrapper {
  margin-bottom: 30px;
  margin: 0 auto;
  text-align: center;
}

.brand-wrapper .logo {
  height: 120px;
  margin-right: 20px;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
  transition: transform 0.3s ease;
}

.brand-wrapper .logo:hover {
  transform: scale(1.05);
}

.login-card {
  border: 0;
  border-radius: 20px;
  box-shadow: 
    0 20px 40px rgba(0, 0, 0, 0.1),
    0 15px 25px rgba(0, 0, 0, 0.1),
    0 5px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
  transform: translateY(-5px);
  box-shadow: 
    0 30px 60px rgba(0, 0, 0, 0.15),
    0 20px 35px rgba(0, 0, 0, 0.1),
    0 10px 20px rgba(0, 0, 0, 0.1);
}
.login-card-img {
  border-radius: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
  object-fit: cover;
}

.login-card .card-body {
  padding: 3rem 2.5rem;
  position: relative;
}

@media screen and (max-width: 500px){
  .login-card .card-body {
    padding: 2rem 1.5rem;
  }
}

.login-card-empresa {
  font-size: 28px;
  color: #2d3748;
  font-weight: 600;
  margin-bottom: 3rem;
  text-align: center;
}

.login-card-ingreso {
  font-size: 24px;
  color: #4a5568;
  font-weight: 600;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
}

.login-card-ingreso::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 2px;
}

.login-card .form-control {
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  padding: 18px 24px;
  margin-bottom: 24px;
  min-height: 58px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 500;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(5px);
}

.login-card .form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  outline: none;
  background: rgba(255, 255, 255, 1);
  transform: translateY(-2px);
}
.login-card .form-control::-webkit-input-placeholder { 
  color: #a0aec0; 
  font-weight: 500;
}
.login-card .form-control::-moz-placeholder { 
  color: #a0aec0; 
  font-weight: 500;
}
.login-card .form-control:-ms-input-placeholder { 
  color: #a0aec0; 
  font-weight: 500;
}
.login-card .form-control::-ms-input-placeholder { 
  color: #a0aec0; 
  font-weight: 500;
}
.login-card .form-control::placeholder { 
  color: #a0aec0; 
  font-weight: 500;
}

.login-card .login-btn {
  padding: 16px 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 12px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
  margin-bottom: 24px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.login-card .login-btn::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;
}

.login-card .login-btn:hover::before {
  left: 100%;
}

.login-card .login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
  background: linear-gradient(135deg, #5a6fd8 0%, #6b46a3 100%);
}

.login-card .login-btn:active {
  transform: translateY(0px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
}

.login-card .forgot-password-link {
  font-size: 15px;
  color: #718096;
  margin-bottom: 12px;
  transition: color 0.3s ease;
}

.login-card .forgot-password-link:hover {
  color: #667eea;
}

.login-card-footer-text {
  font-size: 16px;
  color: #4a5568;
  margin-bottom: 60px;
  text-align: center;
}

@media (max-width: 767px) {
  .login-card-footer-text {
    margin-bottom: 24px;
  }
}

.login-card-footer-nav a {
  font-size: 14px;
  color: #718096;
  transition: color 0.3s ease;
}

.login-card-footer-nav a:hover {
  color: #667eea;
}

.btn-ingreso { 
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff; 
  font-weight: 600;
  border: none;
  border-radius: 12px;
  padding: 16px 24px;
  font-size: 18px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-ingreso::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;
}

.btn-ingreso:hover::before {
  left: 100%;
}

.btn-ingreso:hover {
  color: #ffffff;
  text-decoration: none;
  background: linear-gradient(135deg, #5a6fd8 0%, #6b46a3 100%);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.btn-ingreso:active {
  transform: translateY(0px);
}

#btnIngresar { 
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  width: 100%;
}

#bgLogin {
  position: relative;
  overflow: hidden;
}

#bgLogin::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px),
    radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 50px 50px, 20px 20px;
  background-position: 0 0, 25px 25px;
  animation: float 20s infinite linear;
  z-index: -1;
}

@keyframes float {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* Efectos adicionales para dispositivos móviles */
@media (max-width: 768px) {
  .login-card {
    margin: 20px;
  }
  
  .login-card .card-body {
    padding: 2rem 1.5rem;
  }
  
  .brand-wrapper .logo {
    height: 100px;
  }
  
  .login-card-ingreso {
    font-size: 20px;
  }
}