:root {
  --primary-color: #3498db;
  --secondary-color: #2c757d;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --danger-color: #dc3545;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --sidebar-width: 220px;
  /* consistent sidebar width */
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #f8f9fa;
  display: flex;
  flex-direction: column;
}

.navbar {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background-color: rgba(44, 62, 80, 0.85) !important;
  padding: 0.8rem 1rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .btn {
  border-radius: 8px;
  padding: 6px 18px;
  font-weight: 600;
  font-size: 13px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 38px; /* Fixed height for consistency */
}

.navbar .btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border: none;
  box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

.navbar .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(52, 152, 219, 0.4);
}

.navbar .btn-outline-light {
  border: 1.5px solid rgba(255, 255, 255, 0.6);
}

.navbar .btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  transform: translateY(-2px);
}

@media (max-width: 992px) {

  html,
  body {
    overflow-y: auto;
  }

  .background-overlay {
    position: absolute;
    height: auto;
    min-height: 100%;
  }

  .navbar-collapse {
    position: absolute;
    top: calc(100% + 5px);
    right: 15px;
    left: auto;
    width: 260px;
    max-width: 90vw;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px) scaleY(0.98);
    transform-origin: top right;
    transition: max-height 0.25s cubic-bezier(0.165, 0.84, 0.44, 1), opacity 0.2s ease, transform 0.25s cubic-bezier(0.165, 0.84, 0.44, 1);
    background-color: rgba(44, 62, 80, 0.98);
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    padding: 0 1rem;
    z-index: 1050;
  }

  .navbar-collapse.show {
    max-height: 400px;
    opacity: 1;
    overflow: visible;
    transform: translateY(0) scaleY(1);
    padding-bottom: 20px;
    padding-top: 15px;
  }

  .responsive-nav-link {
    transition: all 0.25s cubic-bezier(0.165, 0.84, 0.44, 1) !important;
    border-radius: 6px;
    padding: 0.6rem 1rem !important;
    margin-bottom: 0.3rem;
  }

  .responsive-nav-link:hover {
    background-color: rgba(52, 152, 219, 0.15);
    color: var(--primary-color) !important;
    transform: translateX(4px);
  }


  .icon-fixed-width {
    width: 20px;
    text-align: center;
  }

  .navbar-collapse .nav-link {
    color: #fff !important;
  }

  .navbar-collapse .nav-link:hover {
    color: var(--primary-color);
  }

  .navbar-toggler {
    border-color: #fff;
  }
}

@media (min-width: 993px) {
  .navbar-collapse {
    position: static !important;
    max-height: none !important;
    opacity: 1 !important;
    overflow: visible !important;
    background-color: transparent !important;
    box-shadow: none !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
  }

  .navbar-nav .nav-link {
    color: #fff !important;
  }

  .navbar .btn {
    white-space: nowrap;
  }
}

footer {
  background: linear-gradient(90deg, #2c3e50, #34495e);
  color: #fff;
  font-size: 0.9rem;
  padding: 0.5rem 0;
  z-index: 2;
}

footer a {
  color: #fff;
}

footer a:hover {
  text-decoration: underline;
}

footer i {
  transition: transform 0.3s;
}

footer i:hover {
  transform: scale(1.2);
}

/* Fix for SweetAlert2 layout shifts on mobile */
body.swal2-shown,
body.swal2-height-auto,
html.swal2-shown,
html.swal2-height-auto {
  height: 100% !important;
  padding: 0 !important;
  margin: 0 !important;
  overflow: hidden !important;
}