:root, .dark-theme {
    --bg-color: #0a0a0c;
    --card-bg: #141417;
    --nav-bg: #111114;
    --bg-hover: #1f1f22;
    --border-color: #242428;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-up: #22c55e;
    --accent-down: #ef4444;
    --accent-primary: #3b82f6;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

.light-theme {
    --bg-color: #f4f4f5;
    --card-bg: #ffffff;
    --nav-bg: #ffffff;
    --bg-hover: #f0f0f0;
    --border-color: #e4e4e7;
    --text-primary: #18181b;
    --text-secondary: #71717a;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.dashboard-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 16px;
    padding: 16px;
    height: calc(100vh - 64px);
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: background-color 0.3s, border-color 0.3s;
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

.chart-container {
    flex: 2;
    min-height: 400px;
}

.stats-container {
    flex: 1;
}

.sidebar {
    height: 100%;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #3f3f46;
}

@media (max-width: 1024px) {
    .dashboard-layout {
        grid-template-columns: 1fr;
        height: auto;
    }
    .sidebar {
        order: 2;
    }
    .main-content {
        order: 1;
    }
}