/**
 * Hamburger Menu Styling
 * Enhanced design that blends with overall UI
 */

:root {
  --hamburger-primary: #1A4A91;
  --hamburger-secondary: #E6A84B;
  --hamburger-light: #f8f9fc;
  --hamburger-border: #e3e6f0;
  --hamburger-shadow: rgba(58, 59, 69, 0.15);
}

/* Hamburger button styles - Now inside sticky header */
/* (Button positioning handled by sticky-header.css) */
.hamburger-btn {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hamburger-btn:hover {
  transform: scale(1.05);
}

.hamburger-btn:active {
  opacity: 0.8;
}

/* Hamburger icon animation */
.hamburger-btn i {
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hamburger-btn:hover i {
  transform: scale(1.15);
}

/* Sidebar overlay - Semi-transparent backdrop */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 999;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  cursor: pointer;
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

/* Sidebar base styling - Fixed positioning for persistent navigation */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  height: 100vh;
  z-index: 1000;
  overflow-y: auto;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar.show {
  transform: translateX(0) !important;
}

/* Mobile media query */
@media (max-width: 768px) {
  .hamburger-btn {
    display: flex !important;
  }

  .sidebar-overlay {
    display: none;
  }

  .sidebar-overlay.active {
    display: block;
  }

  /* Sidebar slides in from left on mobile */
  .sidebar {
    width: 260px;
    transform: translateX(-100%);
    z-index: 1002;
  }

  /* Show text labels when sidebar is expanded */
  .sidebar.show .sidebar-menu span {
    display: inline !important;
    opacity: 1;
  }

  /* Smooth fade-in for text when opening */
  .sidebar-menu span {
    transition: opacity 0.2s ease 0.1s;
    opacity: 1;
  }
}

/* Accessibility improvements */
.hamburger-btn:focus {
  outline: 3px solid var(--hamburger-secondary);
  outline-offset: 2px;
}

.hamburger-btn:focus:not(:focus-visible) {
  outline: none;
}

.hamburger-btn:focus-visible {
  outline: 3px solid var(--hamburger-secondary);
  outline-offset: 2px;
}

/* Extra small screens */
@media (max-width: 480px) {
  .hamburger-btn {
    width: 48px;
    height: 48px;
    top: 0.75rem;
    left: 0.75rem;
    font-size: 1.1rem;
  }

  .sidebar {
    width: 240px;
  }
}