/* ===== SIDEBAR ENHANCEMENTS & UTILITIES ===== */
/* Additional modern sidebar features and responsive utilities */

/* Enhanced Content Scrolling - Prevent Cut-off Issues */
.modern-sidebar-content {
  height: 100vh !important;
  max-height: 100vh !important;
  display: flex !important;
  flex-direction: column !important;
  overflow: hidden !important;
}

.nav-scroll-container {
  flex: 1 1 auto !important;
  min-height: 0 !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  scrollbar-gutter: stable;
}

/* Ensure footer stays at bottom without cutting off nav */
.modern-sidebar-footer {
  flex-shrink: 0 !important;
  margin-top: 0 !important;
}

/* Fix any remaining viewport issues */
@media (min-width: 992px) {
  .modern-sidebar-container {
    height: 100vh !important;
    max-height: 100vh !important;
    overflow: hidden !important;
  }
}

/* Enhanced Focus States */
.nav-link:focus-visible {
  outline: 2px solid var(--gks-accent);
  outline-offset: 2px;
  background-color: rgba(255, 255, 255, 0.15);
}

.modern-sidebar-toggle:focus-visible {
  outline: 2px solid var(--gks-accent);
  outline-offset: 2px;
}

/* Smooth Scroll Behavior */
.nav-scroll-container {
  scroll-behavior: smooth;
}

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

.nav-link.loading::after {
  content: '';
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Tooltip Enhancements for Collapsed State */
body.sidebar-collapsed .nav-link {
  position: relative;
}

body.sidebar-collapsed .nav-link:hover::before {
  content: attr(data-tooltip);
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  white-space: nowrap;
  z-index: 1000;
  margin-left: 0.5rem;
  opacity: 0;
  animation: fadeInTooltip 0.2s ease-out forwards;
}

@keyframes fadeInTooltip {
  from {
    opacity: 0;
    transform: translateY(-50%) translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

/* Responsive Breakpoint Enhancements */
@media (min-width: 1200px) {
  .modern-sidebar-container {
    width: 300px;
  }
  
  body {
    padding-left: 300px !important;
  }
  
  body.sidebar-collapsed .modern-sidebar-container {
    transform: translateX(-300px) !important;
  }
  
  .top-navbar {
    margin-left: -300px;
    padding-left: 300px;
  }
}

/* Dark Mode Support (Future Enhancement) */
@media (prefers-color-scheme: dark) {
  .modern-sidebar-container {
    background: linear-gradient(180deg, #1a1a1a 0%, #2d2d2d 100%);
  }
  
  .nav-scroll-container::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.4);
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .nav-link {
    border: 1px solid transparent;
  }
  
  .nav-link:hover {
    border-color: white;
  }
  
  .nav-link.active {
    border-color: var(--gks-accent);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .modern-sidebar-container,
  .modern-sidebar-toggle,
  .nav-link,
  .toggle-icon .line {
    transition: none !important;
    animation: none !important;
  }
  
  .nav-status-indicator {
    animation: none !important;
  }
}

/* Print Styles */
@media print {
  .modern-sidebar-container,
  .modern-sidebar-toggle {
    display: none !important;
  }
  
  body {
    padding-left: 0 !important;
  }
  
  .main-content {
    margin-left: 0 !important;
  }
}

/* Tablet Specific Adjustments */
@media (min-width: 768px) and (max-width: 991px) {
  .modern-sidebar-container {
    width: 260px;
  }
}

/* Small Mobile Adjustments */
@media (max-width: 576px) {
  .modern-sidebar-container {
    width: 100vw;
  }
  
  .modern-sidebar-header {
    padding: 1rem;
  }
  
  .nav-link {
    padding: 1rem;
    font-size: 1rem;
  }
  
  .nav-icon {
    width: 24px;
    height: 24px;
    margin-right: 1rem;
  }
}

/* Performance Optimizations */
.modern-sidebar-container * {
  will-change: auto;
}

.modern-sidebar-container.transitioning * {
  will-change: transform, opacity;
}

/* Utility Classes */
.sidebar-hidden {
  display: none !important;
}

.sidebar-translucent {
  opacity: 0.7;
}

.nav-section-header {
  padding: 0.5rem 1.5rem;
  margin: 1rem 0 0.5rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Custom Animation Classes */
.slide-in-left {
  animation: slideInLeft 0.3s ease-out;
}

.slide-out-left {
  animation: slideOutLeft 0.3s ease-in;
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutLeft {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(-100%);
    opacity: 0;
  }
}

/* Enhanced Badge Styles */
.nav-badge.urgent {
  background: var(--danger);
  color: white;
  animation: pulse 2s infinite;
}

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

.nav-badge.warning {
  background: var(--warning);
  color: var(--text-dark);
}

/* Micro-interactions */
.nav-link:active {
  transform: scale(0.98);
}

.modern-sidebar-toggle:active {
  transform: scale(0.95);
}

/* Enhanced Scrollbar for Firefox */
@supports (scrollbar-width: thin) {
  .nav-scroll-container {
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
  }
}

/* Backdrop Blur Effect (Modern Browsers) */
@supports (backdrop-filter: blur(10px)) {
  .modern-sidebar-container {
    backdrop-filter: blur(10px);
  }
}