/* ===========================================
   Modern Design Enhancements for Spekuluj.cz
   Compatible with Silicon Bootstrap 5 Template
   =========================================== */

/* CSS Custom Properties for consistent theming */
:root {
  --modern-primary: #6366f1;
  --modern-primary-dark: #4f46e5;
  --modern-secondary: #8b5cf6;
  --modern-success: #22c55e;
  --modern-warning: #f59e0b;
  --modern-danger: #ef4444;
  --modern-gradient: linear-gradient(135deg, var(--modern-primary) 0%, var(--modern-secondary) 100%);
  --modern-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --modern-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --modern-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --modern-radius-sm: 8px;
  --modern-radius-md: 12px;
  --modern-radius-lg: 16px;
  --modern-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Button Styles */
.btn-primary {
  background: var(--modern-gradient);
  border: none;
  box-shadow: var(--modern-shadow-sm);
  transition: var(--modern-transition);
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--modern-primary-dark) 0%, #7c3aed 100%);
  box-shadow: var(--modern-shadow-md);
  transform: translateY(-1px);
}

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

/* Modern Card Enhancements */
.card {
  border: none;
  border-radius: var(--modern-radius-md);
  box-shadow: var(--modern-shadow-sm);
  transition: var(--modern-transition);
}

.card:hover {
  box-shadow: var(--modern-shadow-md);
}

/* Enhanced Form Controls */
.form-control,
.form-select {
  border-radius: var(--modern-radius-sm);
  border: 1px solid #e5e7eb;
  transition: var(--modern-transition);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--modern-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Navigation Glassmorphism Effect */
.navbar {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Footer Modern Gradient */
.footer {
  background: linear-gradient(180deg, #1e1b4b 0%, #0f172a 100%);
}

/* Modern Badge Styles */
.badge {
  font-weight: 500;
  padding: 0.35em 0.75em;
  border-radius: 20px;
}

/* Alert Enhancements */
.alert {
  border: none;
  border-radius: var(--modern-radius-md);
  box-shadow: var(--modern-shadow-sm);
}

/* Modal Enhancements */
.modal-content {
  border: none;
  border-radius: var(--modern-radius-lg);
  box-shadow: var(--modern-shadow-lg);
}

/* Table Enhancements */
.table {
  border-radius: var(--modern-radius-md);
  overflow: hidden;
}

.table thead th {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border-bottom: 2px solid #e2e8f0;
  font-weight: 600;
}

/* Dropdown Enhancements */
.dropdown-menu {
  border: none;
  border-radius: var(--modern-radius-md);
  box-shadow: var(--modern-shadow-lg);
  padding: 0.5rem;
}

.dropdown-item {
  border-radius: var(--modern-radius-sm);
  padding: 0.5rem 1rem;
  transition: var(--modern-transition);
}

.dropdown-item:hover {
  background: #f1f5f9;
}

/* Pagination Enhancements */
.pagination .page-link {
  border-radius: var(--modern-radius-sm);
  margin: 0 2px;
  border: none;
  transition: var(--modern-transition);
}

.pagination .page-item.active .page-link {
  background: var(--modern-gradient);
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* Selection Color */
::selection {
  background: rgba(99, 102, 241, 0.2);
  color: var(--modern-primary-dark);
}

/* Subtle Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

/* Loading Spinner Enhancement */
.spinner-border {
  border-width: 3px;
}

/* Dark Mode Support (if needed) */
@media (prefers-color-scheme: dark) {
  :root {
    --modern-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --modern-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --modern-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  }
}

/* Responsive Enhancements */
@media (max-width: 768px) {
  .card {
    border-radius: var(--modern-radius-sm);
  }
  
  .btn {
    padding: 0.5rem 1rem;
  }
}