/* Toast Notifications */
.toast-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  min-width: 300px;
  max-width: 500px;
  padding: 16px 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10000;
  opacity: 0;
  transform: translateX(400px);
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

.toast-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
  flex-shrink: 0;
}

.toast-success {
  border-left: 4px solid #28a745;
}

.toast-success .toast-icon {
  background: #28a745;
  color: white;
}

.toast-error {
  border-left: 4px solid #dc3545;
}

.toast-error .toast-icon {
  background: #dc3545;
  color: white;
}

.toast-warning {
  border-left: 4px solid #ffc107;
}

.toast-warning .toast-icon {
  background: #ffc107;
  color: #000;
}

.toast-info {
  border-left: 4px solid #17a2b8;
}

.toast-info .toast-icon {
  background: #17a2b8;
  color: white;
}

.toast-message {
  flex: 1;
  color: #333;
  font-size: 14px;
  line-height: 1.4;
}

.toast-close {
  background: none;
  border: none;
  font-size: 20px;
  color: #999;
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s;
  flex-shrink: 0;
}

.toast-close:hover {
  color: #333;
}

.toast-close:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
  border-radius: 4px;
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Skip to Main Content Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #667eea;
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 0 0 4px 0;
  z-index: 10001;
}

.skip-link:focus {
  top: 0;
}

/* Focus Styles - Accessibility */
*:focus-visible {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* Remove outline for mouse users */
*:focus:not(:focus-visible) {
  outline: none;
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.spinner-small {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-overlay .spinner {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: white;
}

/* Responsive Images */
img {
  max-width: 100%;
  height: auto;
}

/* Responsive Typography */
html {
  font-size: 16px;
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 13px;
  }
}

/* Responsive Containers */
.container-fluid {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
}

.container {
  width: 100%;
  padding-right: 15px;
  padding-left: 15px;
  margin-right: auto;
  margin-left: auto;
}

@media (min-width: 576px) {
  .container {
    max-width: 540px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }
}

@media (min-width: 992px) {
  .container {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
}

/* Mobile Responsive Utilities */
@media (max-width: 768px) {
  .toast-notification {
    right: 10px;
    left: 10px;
    min-width: auto;
    max-width: calc(100% - 20px);
  }
  
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .show-mobile-only {
    display: none !important;
  }
}

/* Tablet Specific */
@media (min-width: 768px) and (max-width: 1024px) {
  .hide-tablet {
    display: none !important;
  }
}

/* Desktop Specific */
@media (min-width: 1025px) {
  .hide-desktop {
    display: none !important;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  * {
    border-width: 2px !important;
  }
  
  button,
  a {
    text-decoration: underline;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .toast-notification {
    background: #2d3748;
    color: #fff;
  }
  
  .toast-message {
    color: #e2e8f0;
  }
  
  .toast-close {
    color: #a0aec0;
  }
  
  .toast-close:hover {
    color: #e2e8f0;
  }
}

/* Print Styles */
@media print {
  .no-print,
  .toast-notification,
  .skip-link,
  button,
  nav {
    display: none !important;
  }
  
  a[href]:after {
    content: " (" attr(href) ")";
  }
  
  img {
    max-width: 100% !important;
  }
}