/* Dark Theme Variables */
:root {
    --primary-color: #3b82f6;
    --primary-text: #ffffff;
    --accent-color: #10b981;
    
    --main-bg: #0f172a;
    --sidebar-bg: #1e293b;
    --nav-bg: rgba(30, 41, 59, 0.8);
    --card-bg: #334155;
    
    --button-bg: #475569;
    --button-hover-bg: #64748b;
    --tab-bg: #475569;
    --tab-hover-bg: #64748b;
    
    --text-color: #f1f5f9;
    --text-secondary: #cbd5e1;
    --heading-color: #ffffff;
    
    --border-color: #475569;
    --icon-filter: brightness(0.9);
}

body {
    background: var(--main-bg);
    color: var(--text-color);
}

/* Scrollbar Styling for Dark Theme */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--sidebar-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Custom Dark Theme Enhancements */
.sidebar {
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
}

.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.metric {
    background: linear-gradient(135deg, var(--card-bg) 0%, #2d3748 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.tab-content li {
    background: linear-gradient(135deg, var(--card-bg) 0%, #2d3748 100%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.social-icons a {
    background: linear-gradient(135deg, var(--card-bg) 0%, #2d3748 100%);
}

.control-buttons button {
    background: linear-gradient(135deg, var(--button-bg) 0%, #2d3748 100%);
}

.nav-tab {
    background: linear-gradient(135deg, var(--tab-bg) 0%, #2d3748 100%);
}

/* Glow effects for dark theme */
.profile-image {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.nav-tab.active {
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.mobile-menu-toggle {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}