:root {
  --shadow-heavy: 0 8px 16px rgba(0,0,0,0.2);
  --border-radius: 12px;
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    background-color: #f5f5f5;
    background: url('../img/bg4.jpg') center fixed;
    background-repeat: no-repeat;
    background-size: cover;
}
.form-signin {
    width: 400px;
    max-width: 95%;
    padding: 30px;
    display: block;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 -5px 20px rgba(0,0,0, 0.4) inset, 5px 15px 20px rgba(0,0,0,0.3);
}
  
.form-signin .form-floating:focus-within {
    z-index: 2;
}
  
.form-signin input[type="text"] {
    margin-bottom: 10px;
    border-radius: 10px;
}

.principal {
  width: 1200px;
  max-width: 100%;
  padding: 15px;
  display: block;
  margin: 0 auto;
}

nav, .nav-item, .navbar, .nav-link, .dropdown, .navbar-toggler, .navbar-toggler-icon {
  color: #f5f5f5 !important;
}

.active {
  color: #f5f5f5 !important;
  font-weight: bold;
}

.btn-principal {
  font-size: 1rem;
  font-weight: bold;
  padding: 10px 20px 10px 20px;
  margin-left: 10px;
  margin-right: 10px;
  margin-top: 20px;
}

/*--------------------------------------------------------------
# Preloader
--------------------------------------------------------------*/
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: 100vw !important;
  max-height: 100vh !important;
  z-index: 9999;
  overflow: hidden;
  background: #33cc99;
  transition: all 5s;
}

/* Modais customizados */
.modal-custom .modal-content {
  border-radius: var(--border-radius);
  border: none;
  box-shadow: var(--shadow-heavy);
}

.modal-custom .modal-header {
  background: var(--gradient-primary);
  color: white;
  border: none;
}

.modal-custom .modal-body {
  padding: 2rem;
}

/*#preloader:before {
  content: "";
  position: fixed;
  top: calc(50% - 30px);
  left: calc(50% - 30px);
  border: 6px solid #008099;
  border-top-color: #dcf5f2;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: animate-preloader 1s linear infinite;
}

@keyframes animate-preloader {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}*/