/* ===== MODERN MOBILE NAVIGATION SYSTEM ===== */
/* This file provides a consistent mobile navigation experience across all pages */

/* Prevent horizontal scrolling globally when mobile nav is active */
body.mobile-nav-open {
  overflow-x: hidden !important;
  position: relative !important;
}

/* Mobile Navigation Toggle Button - Always visible on mobile */
.nav-toggle {
  display: none; /* Hidden by default */
  position: relative; /* Position within header, not fixed */
  z-index: 1001;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
  visibility: visible;
  opacity: 1;
  flex-shrink: 0; /* Prevent shrinking */
  align-self: center; /* Ensure vertical centering */
  /* Position will be overridden by style.css for mobile */
}

.nav-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 25px rgba(59, 130, 246, 0.4);
}

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

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw; /* Use viewport width to prevent overflow */
  height: 100vh; /* Use viewport height to prevent overflow */
  background: linear-gradient(135deg, rgba(0, 0, 0, 1), rgba(15, 23, 42, 1));
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease-out;
  overflow: hidden; /* Prevent content overflow */
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Fade out animation */
.mobile-nav-overlay.fade-out {
  opacity: 0;
  visibility: hidden;
}

/* Mobile Navigation Content */
.mobile-nav-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  width: 90%;
  max-width: 420px;
  max-height: 86vh; /* Make container higher on mobile */
  text-align: center;
  transition: all 0.25s ease-out;
  overflow: auto; /* Allow scroll if content exceeds viewport */
}

.mobile-nav-overlay.active .mobile-nav-content {
  transform: translate(-50%, -50%) scale(1);
}

/* Mobile Navigation Logo */
.mobile-nav-logo {
  margin-bottom: 40px;
  padding: 20px;
}

.mobile-logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}

.mobile-logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.mobile-logo-text {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.mobile-nav-logo p {
  color: #94a3b8;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Mobile Navigation Links */
.mobile-nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav-links li {
  margin-bottom: 16px;
}

.mobile-nav-links a {
  display: block;
  padding: 18px 24px;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.25), rgba(29, 78, 216, 0.15));
  border: 2px solid rgba(59, 130, 246, 0.25);
  border-radius: 16px;
  color: white;
  text-decoration: none;
  font-size: 1.2rem;
  font-weight: 600;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.mobile-nav-links a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.2), transparent);
  transition: left 0.5s ease;
}

.mobile-nav-links a:hover::before {
  left: 100%;
}

.mobile-nav-links a:hover {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.35), rgba(29, 78, 216, 0.25));
  border-color: rgba(59, 130, 246, 0.6);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

/* Accessible focus ring */
.mobile-nav-links a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.35), 0 0 0 8px rgba(2, 6, 23, 0.9);
}

/* Admin link accent */
.mobile-nav-links a.admin-link {
  background: linear-gradient(135deg, rgba(147, 197, 253, 0.15), rgba(59, 130, 246, 0.12));
  border-color: rgba(147, 197, 253, 0.35);
}
.mobile-nav-links a.admin-link:hover {
  background: linear-gradient(135deg, rgba(147, 197, 253, 0.35), rgba(59, 130, 246, 0.25));
  border-color: rgba(147, 197, 253, 0.6);
}

/* Close Button */
.mobile-nav-close {
  position: absolute;
  top: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.3);
  z-index: 1002;
}

.mobile-nav-close:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 25px rgba(239, 68, 68, 0.4);
}

.mobile-nav-close:active {
  transform: scale(0.95);
}

/* Mobile Navigation Footer */
.mobile-nav-footer {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: #64748b;
  font-size: 0.8rem;
}

/* Responsive Design */
@media (max-width: 480px) {
  .nav-toggle {
    margin-top: 2px;
    margin-right: 2px;
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
  
  .mobile-nav-close {
    width: 45px;
    height: 45px;
    font-size: 20px;
  }
  
  .mobile-nav-content {
    width: 95%;
  }
  
  .mobile-nav-logo h2 {
    font-size: 1.8rem;
  }
  
  .mobile-nav-links a {
    padding: 16px 20px;
    font-size: 1.1rem;
  }
}

/* Animation Classes */
.mobile-nav-overlay.fade-in {
  animation: fadeIn 0.4s ease-out;
}

.mobile-nav-overlay.fade-out {
  animation: fadeOut 0.4s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.95);
  }
}

/* Hide desktop navigation on mobile */
@media (max-width: 768px) {
  .nav {
    display: none !important;
  }
  
  .nav-toggle {
    display: block !important; /* Force show on mobile */
    position: absolute !important; /* Anchor to header, not viewport */
    top: 12px !important; /* Add breathing room */
    right: 12px !important; /* Add breathing room */
    z-index: 9999 !important; /* Ensure on top */
  }
}

/* Show desktop navigation on larger screens */
@media (min-width: 769px) {
  .mobile-nav-overlay {
    display: none !important;
  }
  
  .nav-toggle {
    display: none !important; /* Hide mobile toggle on desktop */
  }
}

/* Force immediate visibility on mobile screens */
@media (max-width: 768px) {
  .nav-toggle {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: absolute !important; /* Anchor to header */
    top: 12px !important; /* Space from top */
    right: 12px !important; /* Space from right */
    z-index: 9999 !important; /* Ensure on top */
    margin: 0 !important; /* Reset margins */
    padding: 0 !important; /* Reset padding */
  }
}