:root {
    /* Colors */
    --primary-color: #2563eb;
    /* Blue 600 */
    --primary-hover: #1d4ed8;
    /* Blue 700 */
    --primary-light: #eff6ff;
    /* Blue 50 */

    --secondary-color: #64748b;
    /* Slate 500 */
    --secondary-hover: #475569;
    /* Slate 600 */

    --success-color: #16a34a;
    /* Green 600 */
    --success-bg: #f0fdf4;
    /* Green 50 */
    --success-border: #86efac;
    /* Green 300 */

    --danger-color: #dc2626;
    /* Red 600 */
    --danger-hover: #b91c1c;
    /* Red 700 */
    --danger-bg: #fef2f2;
    /* Red 50 */
    --danger-border: #fca5a5;
    /* Red 300 */

    --warning-color: #ca8a04;
    /* Yellow 600 */
    --warning-bg: #fffbeb;
    /* Amber 50 */
    --warning-border: #fcd34d;
    /* Amber 300 */

    --shaft-color: #7e22ce;
    /* Purple 700 */
    --shaft-bg: #faf5ff;
    /* Purple 50 */
    --shaft-border: #e9d5ff;
    /* Purple 200 */

    --bg-body: #f9fafb;
    /* Gray 50 */
    --bg-surface: #ffffff;
    --bg-surface-alt: #f3f4f6;
    /* Gray 100 */

    --text-main: #111827;
    /* Gray 900 */
    --text-muted: #6b7280;
    /* Gray 500 */
    --text-light: #9ca3af;
    /* Gray 400 */

    --border-color: #e5e7eb;
    /* Gray 200 */

    /* Spacing */
    --spacing-xs: 0.25rem;
    /* 4px */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 1rem;
    /* 16px */
    --spacing-lg: 1.5rem;
    /* 24px */
    --spacing-xl: 2rem;
    /* 32px */
    --spacing-2xl: 4rem;
    /* 64px */

    /* Borders */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 1rem;

    /* Typography */
    --font-family: "Roboto", "Segoe UI", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-fancy: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04), 0 0 0 1px rgba(0, 0, 0, 0.02);

    /* Gradients */
    --bg-gradient-body: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    
    /* Shared Bars */
    --bar-bg: #222;
    --bar-fg: #eee;
    --bar-border: #444;
}

body {
    font-family: var(--font-family);
    background: var(--bg-gradient-body);
    background-attachment: fixed;
    /* Parallax-like feel */
    color: var(--text-main);
    margin: 0;
    line-height: 1.5;
    min-height: 100vh;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 0;
    font-weight: 600;
}

a {
    color: var(--primary-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}