:root {
    --bg-body: #f5f5f7;
    --bg-card: #ffffff;
    --bg-card-soft: #f8fafc;
    --border-subtle: #e2e8f0;
    --shadow-soft: 0 10px 25px rgba(15, 23, 42, 0.08);
    --color-primary: #1e40af;
    --color-primary-dark: #1d357e;
    --color-primary-soft: #e0ebff;
    --color-text-main: #1f2933;
    --color-text-muted: #6b7280;
    --color-success: #198754;
    --color-warning: #f59e0b;
    --color-danger: #b91c1c;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    overflow-y: scroll;
}

body {
    margin: var(--space-lg);
    background: var(--bg-body);
    color: var(--color-text-main);
    font-family: var(--font-family-base);
    line-height: 1.5;
}

h1 {
    color: var(--color-primary);
    font-weight: 600;
    letter-spacing: 0.02em;
    text-align: center;
}

h2,
h3 {
    line-height: 1.3;
}

a {
    color: var(--color-primary);
}

a:focus-visible {
    outline: 3px solid rgba(30, 64, 175, 0.35);
    outline-offset: 3px;
}

[hidden] {
    display: none !important;
}