/* =========  SHARED HEADER  ========= */
@import url("unified.css");   /* tokens, fonts, utilities */
@import url("footer.css");     /* footer styles */

/* ---- Header Bar ---- */
.header-fixed{
  position:fixed;
  top:0; left:0; right:0;
  z-index:var(--z-fixed);
  background:rgba(8,8,18,.8);
  backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,42,42,.1);
  padding:16px 0;
  transition:var(--transition-normal);
}
.header-fixed.scrolled{
  background:rgba(8,8,18,.95);
  box-shadow:var(--shadow-lg);
}

/* ---- Prevent Content Overlap ---- */
/* Calculate header height accurately:
   - Header padding: 16px top + 16px bottom = 32px
   - Navbar content (logo + nav links): ~70px
   - Contextual nav wrapper: ~40px when present
   Total base: ~102px, with contextual: ~142px
*/
:root {
  --header-base-height: 110px; /* Base navbar height - increased for safety */
  --header-with-contextual: 150px; /* With contextual navigation */
  --header-mobile-height: 80px; /* Mobile header height */
}

/* Add padding to body to prevent content from being hidden under fixed header */
html {
  scroll-padding-top: var(--header-base-height);
}

body {
  padding-top: var(--header-base-height) !important;
  margin: 0 !important;
}

/* Contextual nav is now in dropdown, so we don't need extra padding */

/* Ensure all main content areas start below header with additional spacing */
main,
.main-content,
.page-hero,
.hero,
section:first-of-type,
.container:first-child {
  position: relative;
  z-index: 1;
  margin-top: 0 !important;
  padding-top: var(--space-md) !important;
}

/* Ensure first section in main has proper spacing */
main > section:first-child,
main > .hero:first-child,
main > .page-hero:first-child {
  padding-top: var(--space-lg) !important;
}

/* Ensure footer has space above it and doesn't overlap */
body > footer,
.site-footer {
  margin-top: auto;
  position: relative;
  z-index: 1;
  clear: both;
}

.navbar{
  display:flex; align-items:center; justify-content:space-between;
}

/* ---- Logo ---- */
.logo{
  font-size:1.8rem; font-weight:700; letter-spacing:2px;
  color:var(--text-primary); text-decoration:none;
  position:relative; font-family:var(--font-display);
}
.logo-text{ position:relative; z-index:2; }
.logo-glow{
  position:absolute; top:50%; left:50%;
  transform:translate(-50%,-50%);
  width:120%; height:120%;
  background:var(--primary); filter:blur(20px); opacity:.3; z-index:1;
  animation:pulseGlow 3s infinite;
}

/* ---- Navigation ---- */
.nav-links{
  display:flex; gap:var(--space-xl); align-items:center;
  list-style:none; margin:0; padding:0;
}
.nav-links a{
  color:var(--text-secondary); text-decoration:none;
  font-size:.9rem; font-weight:500; text-transform:uppercase; letter-spacing:1px;
  transition:var(--transition-normal); position:relative; padding:var(--space-sm) 0;
}
.nav-links a:hover,
.nav-links a.active{ color:var(--primary); }
.nav-links a::after{
  content:''; position:absolute; bottom:-2px; left:0; width:0; height:2px;
  background:var(--primary); transition:var(--transition-normal);
}
.nav-links a:hover::after,
.nav-links a.active::after{ width:100%; }

/* Dashboard icon style */
.nav-links .fa-tachometer-alt {
  margin-right: 6px;
  color: var(--primary);
  font-size: 1.1em;
}

/* Auth-only navigation items (hidden until user is authenticated) */
.auth-only{ display:none !important; }
.auth-only.visible{ display:flex !important; }
.admin-only{ display:none !important; }
.admin-only.visible{ display:flex !important; }

/* ---- Navigation Dropdown ---- */
.nav-dropdown{ position:relative; }
.nav-dropdown > a{ display:flex; align-items:center; gap:var(--space-xs); }
.nav-dropdown > a i{ 
  font-size:.7rem; 
  transition:var(--transition-normal);
  opacity:0.7;
  display:inline-block;
  margin-left:4px;
}
.nav-dropdown:hover > a i{ 
  transform:rotate(180deg);
  opacity:1;
}
.nav-dropdown > a:hover i{ opacity:1; }
.dropdown-menu{
  position:absolute; top:100%; left:0; margin-top:var(--space-sm);
  background:var(--bg-card); border:1px solid rgba(255,42,42,.2);
  border-radius:var(--border-radius); backdrop-filter:blur(16px);
  min-width:200px; opacity:0; visibility:hidden; transform:translateY(-10px);
  transition:var(--transition-normal); z-index:var(--z-dropdown);
  list-style:none; padding:var(--space-sm) 0; margin:0;
  box-shadow:var(--shadow-lg);
}
.nav-dropdown:hover .dropdown-menu{ opacity:1; visibility:visible; transform:translateY(0); }
.dropdown-menu li{ margin:0; }
.dropdown-menu a{
  display:block; padding:var(--space-sm) var(--space-md);
  color:var(--text-secondary); text-decoration:none;
  font-size:.85rem; text-transform:none; letter-spacing:0;
  transition:var(--transition-fast);
}
.dropdown-menu a:hover{ background:var(--bg-hover); color:var(--primary); }

/* Dropdown improvements */
.nav-dropdown > a {
  display: flex;
  align-items: center;
}
.dropdown-menu {
  min-width: 180px;
}
.dropdown-menu li a {
  padding-left: 18px;
}

/* ---- Language Switcher ---- */
.lang-switcher{ position:relative; }
.lang-btn{
  display:inline-flex; align-items:center; gap:var(--space-sm);
  background:transparent; border:1px solid rgba(255,42,42,.2);
  color:var(--text-primary); padding:var(--space-sm) var(--space-md);
  border-radius:var(--border-radius); cursor:pointer; transition:var(--transition-normal);
}
.lang-btn:hover{ border-color:var(--primary); background:var(--bg-hover); }
.lang-flag{ font-size:1.2rem; }
.lang-dropdown{
  position:absolute; top:100%; right:0; margin-top:var(--space-sm);
  background:var(--bg-card); border:1px solid rgba(255,42,42,.2);
  border-radius:var(--border-radius); backdrop-filter:blur(16px);
  min-width:180px; opacity:0; visibility:hidden; transform:translateY(-10px);
  transition:var(--transition-normal); z-index:var(--z-dropdown);
  list-style:none; padding:var(--space-sm) 0; margin:0;
}
.lang-dropdown.show{ opacity:1; visibility:visible; transform:translateY(0); }
.lang-option{
  display:flex; align-items:center; gap:var(--space-sm); width:100%;
  padding:var(--space-sm) var(--space-md); background:transparent; border:none;
  color:var(--text-secondary); cursor:pointer; transition:var(--transition-fast);
}
.lang-option:hover{ background:var(--bg-hover); color:var(--text-primary); }

/* ---- Navigation Actions (Box Icon + Hamburger) ---- */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Folder Navigation Button (Box Icon) */
.folder-nav-wrapper {
  position: relative;
  z-index: var(--z-dropdown);
}

.folder-nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(255, 42, 42, 0.2);
  color: var(--text-secondary);
  font-size: 1.1rem;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-normal);
  min-width: 40px;
  height: 40px;
}

.folder-nav-btn:hover {
  background: var(--bg-hover);
  border-color: var(--primary);
  color: var(--primary);
}

.folder-nav-btn[aria-expanded="true"] {
  background: var(--bg-hover);
  border-color: var(--primary);
  color: var(--primary);
}

/* Contextual Navigation Dropdown */
.contextual-nav-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid rgba(255, 42, 42, 0.2);
  border-radius: var(--border-radius);
  backdrop-filter: blur(16px);
  min-width: 250px;
  max-width: 400px;
  max-height: 70vh;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-normal);
  z-index: calc(var(--z-dropdown) + 1);
  box-shadow: var(--shadow-lg);
  padding: var(--space-md);
}

/* Desktop: Show on hover */
@media (hover: hover) and (pointer: fine) {
  .folder-nav-wrapper:hover .contextual-nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* Show when toggled (mobile click or desktop click) */
.contextual-nav-dropdown.show {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateY(0) !important;
}

/* ---- Hamburger ---- */
.hamburger{ display:none; background:transparent; border:none; color:var(--text-primary);
  font-size:1.5rem; cursor:pointer; padding:var(--space-sm); border-radius:var(--border-radius-sm); }
.hamburger:hover{ background:var(--bg-hover); }

/* ---- Particles ---- */
.particle-bg{ position:fixed; inset:0; z-index:-1; pointer-events:none; overflow:hidden; }
.particle{ position:absolute; width:3px; height:3px; background:var(--primary); border-radius:50%;
  opacity:0; animation:particleFloat 20s infinite linear; }
.particle:nth-child(3n+1){ background:var(--accent-blue); }
.particle:nth-child(3n+2){ background:var(--accent-purple); }

/* ---- Footer ---- */
footer{ background:var(--bg-secondary); border-top:1px solid rgba(255,42,42,.1);
  padding:var(--space-lg) 0; margin-top:var(--space-3xl); }

/* ---- Contextual Navigation Styles (in Dropdown) ---- */
.contextual-nav-dropdown .contextual-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  align-items: flex-start;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.9rem;
}

.contextual-nav-dropdown .contextual-nav li {
  position: relative;
  width: 100%;
  padding-left: var(--space-md);
}

.contextual-nav-dropdown .contextual-nav li:not(.nav-parent)::before {
  content: '→';
  color: var(--text-secondary);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.8rem;
  opacity: 0.6;
}

.contextual-nav-dropdown .contextual-nav li.nav-parent {
  padding-left: 0;
  margin-bottom: var(--space-xs);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contextual-nav-dropdown .contextual-nav li.nav-parent::before {
  display: none;
}

.contextual-nav-dropdown .contextual-nav li.nav-parent a {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.contextual-nav-dropdown .contextual-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
  display: block;
  padding: var(--space-xs) 0;
  width: 100%;
}

.contextual-nav-dropdown .contextual-nav a:hover {
  color: var(--primary);
  padding-left: var(--space-xs);
}

/* ---- Responsive ---- */
@media (max-width:768px){
  :root {
    --header-base-height: 80px;
    --header-with-contextual: 120px;
  }
  
  html {
    scroll-padding-top: var(--header-base-height);
  }
  
  body {
    padding-top: var(--header-base-height) !important;
  }
  
  /* Contextual nav is in dropdown, no extra padding needed */
  
  /* Ensure mobile content has proper spacing */
  main,
  .main-content,
  .page-hero,
  .hero {
    padding-top: var(--space-sm) !important;
  }
  
  /* Mobile navigation actions */
  .nav-actions {
    gap: var(--space-sm);
  }
  
  .folder-nav-btn {
    min-width: 36px;
    height: 36px;
    font-size: 1rem;
    padding: var(--space-xs);
  }
  
  /* Mobile: Contextual nav dropdown positioning */
  .contextual-nav-dropdown {
    position: fixed !important;
    top: auto !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    min-width: 100vw !important;
    max-width: 100vw !important;
    max-height: 60vh;
    margin: 0 !important;
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    transform: translateY(100%) !important;
  }
  
  .contextual-nav-dropdown.show {
    transform: translateY(0) !important;
  }
  
  /* Ensure dropdown appears above everything on mobile */
  .folder-nav-wrapper {
    z-index: 9999;
  }
  
  .contextual-nav-dropdown {
    z-index: 10000;
  }
  
  /* Disable hover effect on mobile - only .show class works */
  @media (hover: none) and (pointer: coarse) {
    .folder-nav-wrapper:hover .contextual-nav-dropdown:not(.show) {
      opacity: 0;
      visibility: hidden;
      transform: translateY(100%) !important;
    }
  }
  
  .nav-links{ position:fixed; top:100%; left:0; right:0; flex-direction:column;
    background:var(--bg-secondary); padding:var(--space-lg); gap:var(--space-md);
    transform:translateY(-100%); opacity:0; visibility:hidden;
    transition:var(--transition-normal); box-shadow:var(--shadow-lg);
    border-top:1px solid rgba(255,42,42,.1); }
  .nav-links.show{ transform:translateY(0); opacity:1; visibility:visible; }
  .hamburger{ display:block; }
  .nav-dropdown{ position:static; }
  .dropdown-menu{
    position:static; opacity:1; visibility:visible; transform:none;
    background:transparent; border:none; box-shadow:none;
    margin:0; padding:var(--space-xs) 0 var(--space-xs) var(--space-md);
  }
  .nav-dropdown > a i{ display:none; }
}