:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Navbar Styles */
.bg-gradient-primary {
  background: var(--primary-gradient) !important;
}

.navbar-brand {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

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

.navbar-logo {
  height: 40px;
  width: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.navbar-brand:hover .navbar-logo {
  transform: scale(1.1);
}

@media (max-width: 768px) {
  .navbar-logo {
    height: 35px;
  }
}

.home-logo {
  height: 120px;
  width: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}

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

@media (max-width: 768px) {
  .home-logo {
    height: 80px;
  }
}

.nav-link {
  transition: all 0.3s ease;
  border-radius: 5px;
  padding: 0.5rem 1rem !important;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* Card Styles */
.card {
  border: none;
  border-radius: 15px;
  overflow: hidden;
  transition: all 0.3s ease;
  background: white;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  border: none;
  padding: 1.5rem;
  font-weight: 600;
  font-size: 1.25rem;
}

.card-header.bg-primary {
  background: var(--primary-gradient) !important;
}

.card-header.bg-success {
  background: var(--success-gradient) !important;
}

.card-header.bg-danger {
  background: var(--danger-gradient) !important;
}

.card-body {
  padding: 2rem;
}

/* Form Styles */
.form-control {
  border-radius: 10px;
  border: 2px solid #e0e0e0;
  padding: 0.75rem 1rem;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
  transform: translateY(-2px);
}

.form-label {
  font-weight: 600;
  color: #333;
  margin-bottom: 0.5rem;
}

/* Button Styles */
.btn {
  border-radius: 10px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
}

.btn-primary {
  background: var(--primary-gradient);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-success {
  background: var(--success-gradient);
  box-shadow: var(--shadow-md);
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-danger {
  background: var(--danger-gradient);
  box-shadow: var(--shadow-md);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

/* Alert Styles */
.alert {
  border-radius: 10px;
  border: none;
  padding: 1.25rem 1.5rem;
}

.alert-success {
  background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
  color: #155724;
}

.alert-danger {
  background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
  color: #721c24;
}

.alert-info {
  background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
  color: #0c5460;
}

/* Badge Styles */
.badge {
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-weight: 600;
}

/* Footer Styles */
.footer-custom {
  background: var(--dark-gradient);
  margin-top: auto;
}

.text-white-50 {
  color: rgba(255, 255, 255, 0.7) !important;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeIn 0.5s ease-out;
}

/* Input Group Styles */
.input-group-text {
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: 10px 0 0 10px;
}

/* Responsive */
@media (max-width: 768px) {
  .card-body {
    padding: 1.5rem;
  }
  
  .btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }
}

/* Focus Styles */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Loading Animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}