/* Navigation Styles */
.nav-glass {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: 90%;
    max-width: 1200px;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.nav-brand i {
    color: var(--accent-primary);
    font-size: 1.2rem;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    transform: translateY(-1px);
}

/* Theme Selector */
.theme-selector {
    position: relative;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.theme-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    padding: 8px;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
}

.theme-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

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

.theme-option.active {
    background: var(--accent-primary);
    color: white;
}

.theme-preview {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 2px solid var(--glass-border);
}

.theme-preview.dark { background: linear-gradient(135deg, #1a1a2e, #0f0f23); }
.theme-preview.light { background: linear-gradient(135deg, #f8fafc, #e2e8f0); }
.theme-preview.purple { background: linear-gradient(135deg, #8B45FF, #DA44BB); }
.theme-preview.ocean { background: linear-gradient(135deg, #0096FF, #00D4AA); }
.theme-preview.forest { background: linear-gradient(135deg, #22c55e, #10b981); }