/* ===========================
   Layout and Navigation Styles
   =========================== */

/* CSS Variables */
:root {
  --nav-bg: #ffffff;
  --nav-border: #e1e4e8;
  --nav-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  --nav-text: #212529;
  --nav-text-muted: #6c757d;
  --nav-hover-bg: #f8f9fa;
  --primary-color: #0969da;
  --primary-hover: #0860ca;
}

/* Override Bootstrap navbar styles */
.navbar {
  background-color: var(--nav-bg) !important;
  border-bottom: 1px solid var(--nav-border);
  box-shadow: var(--nav-shadow);
  padding: 1rem 1rem;
  transition: all 0.3s ease;
}

/* Navbar container */
.navbar .container-fluid {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Navbar brand styling */
.navbar-brand {
  color: #667eea !important;
  font-weight: 800;
  font-size: 2rem;
  letter-spacing: -0.5px;
  transition: all 0.3s ease;
  text-decoration: none;
}

.navbar-brand:hover {
  color: #5a67d8 !important;
  transform: translateY(-1px);
}

/* Navbar text styling */
.navbar-text {
  color: var(--nav-text-muted) !important;
  font-size: 0.938rem;
  margin-right: 1rem;
}

/* Navigation buttons */
.navbar .btn {
  font-size: 0.938rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Secondary button in navbar */
.navbar .btn-outline-secondary {
  color: var(--nav-text);
  border-color: var(--nav-border);
  background-color: transparent;
}

.navbar .btn-outline-secondary:hover {
  background-color: var(--nav-hover-bg);
  border-color: #c5ccd5;
  color: var(--nav-text);
  transform: translateY(-1px);
}

/* Primary button in navbar */
.navbar .btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: none;
  font-weight: 600;
}

.navbar .btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(9, 105, 218, 0.25);
}

/* Button group spacing */
.navbar .d-flex {
  gap: 0.75rem;
}

/* Container styling */
.container {
  padding-top: 2rem;
  max-width: 1200px;
}

/* Alert styling */
.alert {
  border-radius: 8px;
  border: 1px solid;
  box-shadow: none;
  padding: 1rem 1.25rem;
  font-size: 0.938rem;
  margin-bottom: 1.5rem;
}

.alert-success {
  background-color: #d1f4dd;
  border-color: #8fd9a8;
  color: #1a7f37;
}

.alert-danger {
  background-color: #ffebe9;
  border-color: #ffc1c1;
  color: #cf222e;
}

.alert-warning {
  background-color: #fff8c5;
  border-color: #ffe070;
  color: #9a6700;
}

.alert-info {
  background-color: #ddf4ff;
  border-color: #80ccff;
  color: #0969da;
}

/* Close button for alerts */
.alert .btn-close {
  opacity: 0.8;
}

/* Remove default Bootstrap margins */
.navbar.mb-4 {
  margin-bottom: 0 !important;
}

/* Main content wrapper for auth pages */
.main-content {
  background-color: white;
  border-radius: 12px;
  padding: 2.5rem;
  margin: 2rem auto;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--nav-border);
  max-width: 500px;
}

/* Page backgrounds */
body {
  background-color: #f8f9fa;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  color: var(--nav-text);
}

/* Responsive navbar */
@media (max-width: 768px) {
  .navbar {
    padding: 0.5rem 1rem;
  }
  
  .navbar-brand {
    font-size: 1.5rem;
  }
  
  .navbar .container,
  .navbar .container-fluid {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
  }
  
  .navbar-nav.ms-auto {
    display: flex !important;
    flex-direction: row !important;
    align-items: center;
    gap: 0.5rem;
    width: auto;
    justify-content: flex-end;
  }
  
  .navbar-nav.ms-auto .nav-link {
    padding: 0.5rem 0.75rem;
  }
  
  .navbar-nav.ms-auto form {
    margin: 0;
  }
  
  .navbar-nav.ms-auto .navbar-text {
    width: auto;
    text-align: left;
    margin: 0 0.5rem 0 0;
    padding-top: 0 !important;
    padding-bottom: 0;
    border-bottom: none;
  }
  
  .navbar .d-flex {
    width: auto;
    justify-content: flex-end;
  }
}

/* Focus styles for accessibility */
.navbar .btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.2);
}

/* Skip to content link for accessibility */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px 16px;
  border-radius: 0 0 8px 0;
  text-decoration: none;
  font-weight: 500;
  z-index: 1100;
  transition: top 0.3s;
}

.skip-to-content:focus {
  top: 0;
}

/* Loading state for navigation */
.navbar.loading {
  opacity: 0.7;
  pointer-events: none;
}

/* Dropdown menus (if needed) */
.navbar .dropdown-menu {
  border: 1px solid var(--nav-border);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  margin-top: 0.5rem;
}

.navbar .dropdown-item {
  padding: 0.5rem 1rem;
  font-size: 0.938rem;
  color: var(--nav-text);
  transition: background-color 0.2s;
}

.navbar .dropdown-item:hover {
  background-color: var(--nav-hover-bg);
  color: var(--nav-text);
}

.navbar .dropdown-divider {
  margin: 0.5rem 0;
  border-color: var(--nav-border);
}

/* Sticky navbar */
.navbar-sticky {
  position: sticky;
  top: 0;
  z-index: 1020;
}

/* Navbar scroll effect */
.navbar.scrolled {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Print styles */
@media print {
  .navbar {
    display: none !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .navbar {
    border-bottom-width: 2px;
  }
  
  .navbar .btn {
    border: 2px solid currentColor;
  }
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
  /* Dark mode styles can be added here */
}

/* Override Bootstrap navbar collapse behavior */
@media (max-width: 991px) {
  .navbar-expand-lg > .container,
  .navbar-expand-lg > .container-fluid {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center;
    justify-content: space-between;
  }
  
  .navbar-nav.ms-auto {
    display: flex !important;
    flex-direction: row !important;
    align-items: center;
    gap: 0.5rem;
  }
  
  .navbar-nav.ms-auto .nav-link {
    padding: 0.5rem 0.75rem;
  }
  
  .navbar-nav.ms-auto form {
    margin: 0;
  }
}