/* Modern CSS Variables */
:root {
  /* Primary Colors - Professional Blue */
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  
  /* Success - Green for correct answers */
  --success: #10b981;
  --success-dark: #059669;
  --success-light: #34d399;
  
  /* Warning - Orange for attention */
  --warning: #f59e0b;
  --warning-dark: #d97706;
  --warning-light: #fbbf24;
  
  /* Error - Red for mistakes */
  --error: #ef4444;
  --error-dark: #dc2626;
  --error-light: #f87171;
  
  /* Info - Blue for information */
  --info: #0ea5e9;
  --info-dark: #0284c7;
  --info-light: #38bdf8;
  
  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Modern Typography */
body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--gray-800);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 600;
  line-height: 1.3;
  color: var(--gray-900);
}

/* Modern Buttons */
.btn-modern {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  box-shadow: var(--shadow-sm);
}

.btn-modern:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-modern:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-primary-modern {
  background-color: var(--primary);
  border-color: var(--primary);
  color: white;
}

.btn-primary-modern:hover {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: white;
}

.btn-success-modern {
  background-color: var(--success);
  border-color: var(--success);
  color: white;
}

.btn-success-modern:hover {
  background-color: var(--success-dark);
  border-color: var(--success-dark);
  color: white;
}

.btn-warning-modern {
  background-color: var(--warning);
  border-color: var(--warning);
  color: white;
}

.btn-warning-modern:hover {
  background-color: var(--warning-dark);
  border-color: var(--warning-dark);
  color: white;
}

.btn-error-modern {
  background-color: var(--error);
  border-color: var(--error);
  color: white;
}

.btn-error-modern:hover {
  background-color: var(--error-dark);
  border-color: var(--error-dark);
  color: white;
}

/* Modern Cards */
.card-modern {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  transition: all 0.15s ease-in-out;
}

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

.card-modern-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.card-modern-body {
  padding: var(--spacing-lg);
}

.card-modern-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
}

/* Modern Forms */
.form-control-modern {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.5;
  color: var(--gray-700);
  background-color: white;
  background-image: none;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control-modern:focus {
  color: var(--gray-700);
  background-color: white;
  border-color: var(--primary-light);
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.25);
}

/* Modern Alerts */
.alert-modern {
  position: relative;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.alert-success-modern {
  color: var(--success-dark);
  background-color: rgba(16, 185, 129, 0.1);
  border-color: var(--success-light);
}

.alert-warning-modern {
  color: var(--warning-dark);
  background-color: rgba(245, 158, 11, 0.1);
  border-color: var(--warning-light);
}

.alert-error-modern {
  color: var(--error-dark);
  background-color: rgba(239, 68, 68, 0.1);
  border-color: var(--error-light);
}

.alert-info-modern {
  color: var(--info-dark);
  background-color: rgba(14, 165, 233, 0.1);
  border-color: var(--info-light);
}

/* Modern Badge */
.badge-modern {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: var(--radius-sm);
}

.badge-primary-modern {
  color: white;
  background-color: var(--primary);
}

.badge-success-modern {
  color: white;
  background-color: var(--success);
}

.badge-warning-modern {
  color: white;
  background-color: var(--warning);
}

.badge-error-modern {
  color: white;
  background-color: var(--error);
}

/* Modern Footer */
.modern-footer {
  background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
  color: white;
  margin-top: auto;
}
.footer-main .contaier{
  background:#212529;
}
.footer-main {
  padding: 3rem 0 2rem;
}

.footer-brand h5 {
  color: white;
  font-weight: 700;
}

.footer-title {
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
  display: flex;
  align-items: center;
}

.footer-link:hover {
  color: white;
  text-decoration: none;
}

.footer-bottom {
  background: rgba(0, 0, 0, 0.2);
  padding: 1rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-legal-link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}

.footer-legal-link:hover {
  color: white;
  text-decoration: none;
}

/* Modern Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

.slide-up {
  animation: slideUp 0.3s ease-in-out;
}

.pulse {
  animation: pulse 2s infinite;
}

/* Modern Utilities */
.text-primary-modern { color: var(--primary) !important; }
.text-success-modern { color: var(--success) !important; }
.text-warning-modern { color: var(--warning) !important; }
.text-error-modern { color: var(--error) !important; }
.text-info-modern { color: var(--info) !important; }

.bg-primary-modern { background-color: var(--primary) !important; }
.bg-success-modern { background-color: var(--success) !important; }
.bg-warning-modern { background-color: var(--warning) !important; }
.bg-error-modern { background-color: var(--error) !important; }
.bg-info-modern { background-color: var(--info) !important; }

/* Modern Responsive */
@media (max-width: 768px) {
  .card-modern {
    margin-bottom: var(--spacing-md);
  }
  
  .btn-modern {
    width: 100%;
    justify-content: center;
  }
  
  .footer-main {
    padding: 2rem 0 1rem;
  }
}

/* Page Transitions */
.page-transition {
  animation: fadeIn 0.3s ease-in-out;
}

/* Loading States */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 1055;
}

.toast {
  background: var(--gray-800);
  color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  margin-bottom: 0.5rem;
  opacity: 0;
  transform: translateX(100%);
  transition: all 0.3s ease-in-out;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--error);
}

.toast.warning {
  background: var(--warning);
}

.toast.info {
  background: var(--info);
}