.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-opacity: 0.95;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

/* Logo */
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo-svg {
    width: 36px;
    height: 36px;
}

/* Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-auth-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

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

/* Avatar and Dropdown */
.avatar-wrapper {
    position: relative;
}

.avatar-button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: var(--text-reverse);
    border: 2px solid var(--card-bg);
    box-shadow: 0 0 0 2px var(--accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    transition: var(--transition);
}

.avatar-button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 0 3px var(--accent), var(--shadow);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1001;
    overflow: hidden;
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    z-index: 999999999;
}

.dropdown-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
    width: 100%;
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
}

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

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

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin-right: 0.5rem;
}

.theme-toggle:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

/* Mobile Menu */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-primary);
    border-radius: var(--radius);
}

.mobile-menu-button:hover {
    background-color: var(--hover-bg);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transition: var(--transition);
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

.mobile-menu-button.active .hamburger {
    background-color: transparent;
}

.mobile-menu-button.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-button.active .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-button {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--card-bg);
        border-bottom: 1px solid var(--border);
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-auth-links {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-link, .btn {
        width: 100%;
        justify-content: center;
    }
    
    .avatar-wrapper {
        display: flex;
        justify-content: center;
        width: 100%;
        padding: 0.5rem 0;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 1px solid var(--border);
        margin-top: 0.5rem;
        display: none;
    }
    
    .dropdown-menu.active {
        display: block;
        z-index: 999999999;
    }
}