:root {
    /* --- InsightArk Style (Light Layout + Orange Accent) --- */
    --primary-color: #ff8855;
    /* Vibrant Orange */
    --primary-hover: #ff6b3b;
    /* Darker Orange */
    --primary-light: #fff0e6;
    /* Light Orange bg */

    --secondary-color: #ec4899;
    --accent-color: #8b5cf6;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    /* Backgrounds */
    --bg-body: #f8fafc;
    /* Slate 50 */
    --bg-glass: rgba(255, 255, 255, 0.95);
    --bg-card: #ffffff;
    --bg-sidebar: #ffffff;
    /* White Sidebar */
    --bg-sidebar-active: #ff8855;
    /* Orange Active State */

    /* Text */
    --text-main: #334155;
    /* Slate 700 */
    --text-muted: #94a3b8;
    /* Slate 400 */
    --text-on-dark: #ffffff;
    /* For active buttons */
    --text-sidebar: #475569;
    /* Slate 600 for sidebar items */

    /* Borders & Lines */
    --border-color: #e2e8f0;
    /* Slate 200 */
    --glass-border: 1px solid #e2e8f0;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-glass: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    --backdrop-blur: blur(8px);

    /* Radius */
    --radius-md: 6px;
    --radius-lg: 12px;
    --radius-xl: 1.5rem;
}

/* --- Dark Mode Overrides --- */
[data-theme="dark"] {
    --primary-color: #818cf8;
    /* Indigo 400 */
    --primary-hover: #6366f1;
    /* Indigo 500 */
    --primary-light: rgba(99, 102, 241, 0.2);

    --bg-body: #0f172a;
    /* Slate 900 */
    --bg-glass: rgba(15, 23, 42, 0.6);
    --bg-card: rgba(30, 41, 59, 0.7);
    /* Slate 800 + Opacity */
    --bg-sidebar: #020617;
    /* Slate 950 */

    --text-main: #f1f5f9;
    /* Slate 100 */
    --text-muted: #94a3b8;
    /* Slate 400 */

    --border-color: #334155;
    /* Slate 700 */
    --glass-border: 1px solid rgba(255, 255, 255, 0.08);
    /* Faint white border */

    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}