/* ============================================
   TOP-NAVBAR.CSS - Top Navigation Bar Styling
   ============================================
   
   Contains:
   - Modern top navigation bar
   - Embedded mobile hamburger menu
   - Clean theme integration
   - Responsive design
*/

/* Top Navigation Bar */
.top-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  z-index: 1400; /* Higher than sidebar to ensure hamburger is clickable */
  transition: all 0.3s ease;
  display: none; /* Hidden by default, shown only on mobile */
}

/* Dark mode styling for top navbar */
[data-theme="dark"] .top-navbar {
  background: rgba(18, 18, 18, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Navbar container */
.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 1rem;
  max-width: 100%;
}

/* Mobile hamburger menu button - embedded in navbar */
.top-navbar .mobile-menu-toggle {
  background: none;
  border: none;
  padding: 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-primary, #333);
  display: flex !important; /* Force display on mobile */
  align-items: center;
  justify-content: center;
  min-width: 44px; /* Accessibility - minimum touch target */
  min-height: 44px;
  margin: 0;
  position: static; /* Not fixed anymore */
}

/* Ensure hamburger is visible on search page */
@media (max-width: 1366px) {
  .page-search .top-navbar .mobile-menu-toggle {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
}

/* Dark mode hamburger button */
[data-theme="dark"] .top-navbar .mobile-menu-toggle {
  color: var(--text-primary-dark, #e5e5e5);
}

/* Hover effect for hamburger button */
.top-navbar .mobile-menu-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
  transform: scale(1.05);
}

[data-theme="dark"] .top-navbar .mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Active state for hamburger button */
.top-navbar .mobile-menu-toggle:active {
  transform: scale(0.98);
  background: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .top-navbar .mobile-menu-toggle:active {
  background: rgba(255, 255, 255, 0.15);
}

/* Focus state for accessibility */
.top-navbar .mobile-menu-toggle:focus {
  outline: 2px solid var(--accent-color, #6366f1);
  outline-offset: 2px;
}

/* SVG icon styling */
.top-navbar .mobile-menu-toggle svg {
  transition: transform 0.2s ease;
}

/* Rotate hamburger icon when sidebar is open */
.mobile-sidebar-open .top-navbar .mobile-menu-toggle svg {
  transform: rotate(90deg);
}

/* Mobile Profile Button */
.mobile-profile-btn,
.mobile-login-btn {
  display: none; /* Hidden by default, shown only on mobile */
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 8px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-left: 8px;
}

.mobile-profile-btn:hover,
.mobile-login-btn:hover {
  background: rgba(0, 0, 0, 0.05);
  transform: scale(1.05);
}

[data-theme="dark"] .mobile-profile-btn:hover,
[data-theme="dark"] .mobile-login-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.mobile-profile-btn:active,
.mobile-login-btn:active {
  transform: scale(0.98);
  background: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .mobile-profile-btn:active,
[data-theme="dark"] .mobile-login-btn:active {
  background: rgba(255, 255, 255, 0.15);
}

.mobile-profile-btn svg,
.mobile-login-btn svg {
  transition: transform 0.2s ease;
}

/* Brand/Title in navbar */
.navbar-brand {
  flex: 1;
  text-align: center;
  pointer-events: auto; /* Allow interactions */
}

/* Clickable brand link */
.brand-link {
  text-decoration: none;
  color: inherit;
  display: inline-block;
  transition: all 0.2s ease;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

.brand-link:hover {
  background: rgba(0, 0, 0, 0.05);
  transform: scale(1.02);
  text-decoration: none;
  color: inherit;
}

[data-theme="dark"] .brand-link:hover {
  background: rgba(255, 255, 255, 0.1);
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary, #333);
  font-family: 'Libre Baskerville', serif;
  letter-spacing: -0.025em;
}

[data-theme="dark"] .brand-text {
  color: var(--text-primary-dark, #e5e5e5);
}

/* Right side actions container */
.navbar-actions {
  min-width: 44px; /* Balance the left hamburger button */
  display: flex;
  justify-content: flex-end;
}

/* ============================================
   RESPONSIVE BEHAVIOR
   ============================================ */

/* Show top navbar only on mobile screens (except home page) */
@media (max-width: 1366px) {
  .top-navbar {
    display: block !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 1400 !important; /* Ensure it's above all content */
  }
  
  /* Hide top navbar only on home page */
  .page-home .top-navbar {
    display: none !important;
  }
  
  /* Ensure search page specifically shows the navbar */
  .page-search .top-navbar {
    display: block !important;
  }
  
  /* Show mobile profile button only on mobile */
  .mobile-profile-btn,
  .mobile-login-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
  }
  
  /* Adjust main content to account for top navbar */
  .main-wrapper {
    padding-top: 60px;
  }
  
  /* Remove top padding from main wrapper on home page */
  .page-home .main-wrapper {
    padding-top: 0 !important;
  }
  
  /* Adjust sidebar positioning for top navbar */
  .sidebar {
    top: 60px;
    height: calc(100vh - 60px);
  }
  
  /* Reset sidebar positioning on home page */
  .page-home .sidebar {
    top: 0 !important;
    height: 100vh !important;
  }
  
  /* Position AI toggle button to overlap top-right of navbar on mobile */
  .ai-toggle-btn {
    position: fixed !important;
    top: 10px !important;
    right: 15px !important;
    z-index: 1500 !important; /* Higher than top navbar */
    width: 40px !important;
    height: 40px !important;
    border-radius: 20px !important;
    background: rgba(102, 126, 234, 0.9) !important;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3) !important;
    border: 2px solid rgba(255, 255, 255, 0.2) !important;
    transition: all 0.3s ease !important;
  }
  
  /* Reset AI button position on home page (no navbar overlap needed) */
  .page-home .ai-toggle-btn {
    position: fixed !important;
    top: 20px !important;
    right: 20px !important;
    z-index: 1200 !important; /* Standard z-index for home page */
  }
  
  .ai-toggle-btn:hover {
    background: rgba(102, 126, 234, 1) !important;
    transform: scale(1.05) !important;
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4) !important;
  }
  
  /* Dark mode AI button styling */
  [data-theme="dark"] .ai-toggle-btn {
    background: rgba(139, 92, 246, 0.9) !important;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3) !important;
  }
  
  [data-theme="dark"] .ai-toggle-btn:hover {
    background: rgba(139, 92, 246, 1) !important;
    box-shadow: 0 6px 16px rgba(139, 92, 246, 0.4) !important;
  }
  
  /* Hide brand text on very small screens to avoid overlap with AI button */
  @media (max-width: 360px) {
    .navbar-brand {
      display: none;
    }
    
    /* Adjust AI button position for very small screens */
    .ai-toggle-btn {
      right: 10px !important;
      top: 10px !important;
    }
  }
}

/* Hide on desktop */
@media (min-width: 1367px) {
  .top-navbar {
    display: none;
  }
  
  /* Reset main wrapper padding on larger screens */
  .main-wrapper {
    padding-top: 0;
  }
  
  /* Reset sidebar positioning on larger screens */
  .sidebar {
    top: 0;
    height: 100vh;
  }
}

/* ============================================
   ACCESSIBILITY ENHANCEMENTS
   ============================================ */

/* High contrast mode support */
@media (prefers-contrast: high) {
  .top-navbar {
    border-bottom: 2px solid;
  }
  
  .top-navbar .mobile-menu-toggle {
    border: 1px solid;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .top-navbar,
  .top-navbar .mobile-menu-toggle,
  .top-navbar .mobile-menu-toggle svg {
    transition: none;
  }
}

/* ============================================
   THEME VARIABLES INTEGRATION
   ============================================ */

/* Light theme */
:root {
  --navbar-bg: rgba(255, 255, 255, 0.95);
  --navbar-border: rgba(0, 0, 0, 0.1);
  --navbar-text: #333;
  --navbar-hover: rgba(0, 0, 0, 0.05);
}

/* Dark theme */
[data-theme="dark"] {
  --navbar-bg: rgba(18, 18, 18, 0.95);
  --navbar-border: rgba(255, 255, 255, 0.1);
  --navbar-text: #e5e5e5;
  --navbar-hover: rgba(255, 255, 255, 0.1);
}

/* Apply CSS variables */
.top-navbar {
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--navbar-border);
}

.top-navbar .mobile-menu-toggle {
  color: var(--navbar-text);
}

.top-navbar .mobile-menu-toggle:hover {
  background: var(--navbar-hover);
}

.brand-text {
  color: var(--navbar-text);
}