:root {
    /* Color Palette - Premium Dark/Blue theme */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --accent: #0ea5e9;
    
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a;
    
    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-inverted: #f1f5f9;
    
    --border-light: #e2e8f0;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    --font-heading: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden; /* App-like feel */
}

button {
    font-family: inherit;
    cursor: pointer;
}

.hidden {
    display: none !important;
}

/* Layout Classes will be in layout.css */
/* Component Classes in components.css */