/* ==========================================================================
   HARSHGURUJI - PREMIUM NAVBAR 2026
   ========================================================================== */

/* --- 1. CSS VARIABLES (Ultra Dark Theme) --- */
:root {
  /* Colors */
  --bg-primary: #0D1117;
  --bg-card: #161B22;
  --bg-hover: rgba(255, 255, 255, 0.05);
  
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-gradient: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-cyan));
  
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --border-color: rgba(255, 255, 255, 0.08);
  --error: #f85149;
  
  /* Glassmorphism & Shadows */
  --glass-bg: rgba(13, 17, 23, 0.75);
  --glass-border: rgba(255, 255, 255, 0.05);
  --shadow-premium: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.4);
  
  /* Sizing & Spacing */
  --nav-height: 72px;
  --nav-scrolled-height: 60px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --trans-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --trans-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 2. RESET & BASE --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

button, input {
  font-family: inherit;
  border: none;
  outline: none;
  background: none;
}

/* --- 3. NAVBAR CONTAINER --- */
.premium-navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: height var(--trans-smooth), transform var(--trans-smooth), background var(--trans-smooth), box-shadow var(--trans-smooth);
  will-change: transform, height;
}

.premium-navbar.scrolled {
  height: var(--nav-scrolled-height);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  background: rgba(13, 17, 23, 0.9);
}

.premium-navbar.hidden {
  transform: translateY(-100%);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* --- 4. BRAND / LOGO --- */
.nav-brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

/* --- 5. SEARCH BAR (CENTER) --- */
.nav-search-container {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 0.5rem 1rem;
  transition: all var(--trans-fast);
}

.search-wrapper:focus-within {
  background: var(--bg-card);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.search-icon {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.95rem;
  padding: 0 0.75rem;
  width: 100%;
}

.search-input::placeholder {
  color: var(--text-secondary);
}

.search-shortcut {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  pointer-events: none;
}

.clear-btn {
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem;
  transition: color var(--trans-fast);
}

.clear-btn:hover {
  color: var(--text-primary);
}

/* Search Dropdown */
.search-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-premium);
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--trans-fast);
  z-index: 100;
}

.nav-search-container.active .search-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.search-section {
  margin-bottom: 1rem;
}

.search-section:last-child {
  margin-bottom: 0;
}

.section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
  padding-left: 0.5rem;
}

.search-list li a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: background var(--trans-fast);
}

.search-list li a:hover {
  background: var(--bg-hover);
}

.search-list li a svg {
  color: var(--text-secondary);
}

/* --- 6. NAVIGATION LINKS --- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--trans-fast);
  cursor: pointer;
}

.nav-link:hover {
  background: var(--bg-hover);
}

/* Underline Animation on Hover */
.nav-item:not(.dropdown-wrapper):not(.has-mega-menu) .nav-link {
  position: relative;
}

.nav-item:not(.dropdown-wrapper):not(.has-mega-menu) .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: all var(--trans-smooth);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-item:not(.dropdown-wrapper):not(.has-mega-menu) .nav-link:hover::after {
  width: 70%;
}

/* --- 7. DROPDOWNS & MEGA MENU --- */
.shadow-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-premium);
  backdrop-filter: blur(24px);
}

/* Standard Dropdown */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  min-width: 220px;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--trans-fast);
  z-index: 100;
}

.dropdown-right {
  left: auto;
  right: 0;
  transform: translateY(10px);
}

.dropdown-wrapper:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) translateX(-50%);
}

.dropdown-wrapper:hover .dropdown-right {
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  border-radius: var(--radius-sm);
  transition: background var(--trans-fast), color var(--trans-fast);
}

.dropdown-item:hover {
  background: var(--bg-hover);
}

.dropdown-item.text-danger {
  color: var(--error);
}

.dropdown-item.text-danger:hover {
  background: rgba(248, 81, 73, 0.1);
}

.divider {
  height: 1px;
  background: var(--border-color);
  margin: 0.5rem 0;
}

/* Mega Menu */
.mega-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: 700px;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--trans-smooth);
  z-index: 100;
}

.has-mega-menu:hover .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.mega-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mega-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--trans-fast);
}

.mega-item:hover {
  background: var(--bg-hover);
}

.mega-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
  transition: transform var(--trans-fast);
}

.mega-item:hover .mega-icon {
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.1);
}

.mega-item span {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
}

.mega-footer {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.mega-footer-link {
  color: var(--accent-cyan);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--trans-fast);
}

.mega-footer-link:hover {
  color: var(--text-primary);
}

/* --- 8. RIGHT ACTIONS --- */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* GuruAI Button */
.btn-premium {
  position: relative;
  display: inline-flex;
  border-radius: var(--radius-full);
  padding: 2px; /* For gradient border effect */
  background: var(--accent-gradient);
  z-index: 1;
  text-decoration: none;
}

.btn-premium::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--accent-gradient);
  filter: blur(8px);
  opacity: 0;
  transition: opacity var(--trans-smooth);
  z-index: -1;
}

.btn-premium:hover::before {
  opacity: 0.7;
}

.btn-content {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-primary);
  padding: 0.5rem 1rem;
  border-radius: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: background var(--trans-fast);
}

.btn-premium:hover .btn-content {
  background: rgba(13, 17, 23, 0.8);
}

/* Login Button */
.btn-login {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--trans-fast);
}

.btn-login:hover {
  background: rgba(255,255,255,0.2);
}

/* User Avatar Button */
.user-avatar-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--trans-fast);
}

.user-avatar-btn:hover {
  border-color: var(--accent-purple);
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info {
  padding: 0.5rem 1rem;
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.user-email {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Icon Buttons (Three Dots) */
.btn-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--trans-fast);
}

.btn-icon:hover {
  background: var(--bg-hover);
}

/* --- 9. MOBILE SPECIFIC --- */
.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 24px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1100;
}

.hamburger-menu .bar {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s linear;
  position: relative;
  transform-origin: 1px;
}

/* Drawer Overlay */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--trans-smooth);
}

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

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100vh;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-left: 1px solid var(--glass-border);
  z-index: 2100;
  display: flex;
  flex-direction: column;
  transition: right var(--trans-smooth);
  box-shadow: -10px 0 30px rgba(0,0,0,0.5);
}

.mobile-drawer.active {
  right: 0;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.close-drawer {
  color: var(--text-primary);
  cursor: pointer;
}

.drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
}

/* Custom Scrollbar for drawer */
.drawer-content::-webkit-scrollbar {
  width: 4px;
}
.drawer-content::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
}

.drawer-search {
  position: relative;
  margin-bottom: 1.5rem;
}

.drawer-search input {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1rem 0.8rem 2.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

.drawer-search .search-icon {
  position: absolute;
  left: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
}

.drawer-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.drawer-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.drawer-user-info {
  display: flex;
  flex-direction: column;
}

.drawer-user-name {
  font-weight: 600;
  font-size: 1rem;
}

.drawer-user-link {
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

.drawer-links {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.drawer-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: background var(--trans-fast);
}

.drawer-link:hover {
  background: var(--bg-hover);
}

.drawer-link svg {
  color: var(--text-secondary);
}

.drawer-divider {
  height: 1px;
  background: var(--border-color);
  margin: 1rem 0;
}

.drawer-logout {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 1rem;
  color: var(--error);
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--trans-fast);
}

.drawer-logout:hover {
  background: rgba(248, 81, 73, 0.1);
}

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

/* --- 10. MEDIA QUERIES --- */
@media (max-width: 1100px) {
  .nav-search-container {
    max-width: 300px;
  }
  .nav-links {
    display: none; /* Hide main links on smaller laptops */
  }
}

@media (max-width: 860px) {
  .nav-search-container {
    display: none; /* Hide search entirely on tablets/mobile, show in drawer */
  }
  
  .auth-wrapper {
    display: none; /* Hide avatar on mobile, move to drawer */
  }
  
  .three-dot-wrapper {
    display: none; /* Hide three dots on mobile */
  }
  
  .hamburger-menu {
    display: flex;
  }
}