:root {
    /* Colors */
    --theme-primary: #1976D2;
    --theme-accent: #424242;
    --theme-header: #1a1a2e;
    --theme-background: #F5F5F5;
    --theme-surface: #FFFFFF;
    --theme-surface-light: #f7f7f7;
    --theme-surface-alt: #fafafa;
    --theme-border: #e8e8e8;
    --theme-border-subtle: #f0f0f0;
    --theme-border-input: #e0e0e0;
    --theme-border-strong: #ddd;
    --theme-text-primary: #1a1a2e;
    --theme-text-secondary: #555;
    --theme-text-muted: #999;
    --theme-text-on-surface: #333;
    --theme-price-color: #1a1a2e;
    --theme-code-color: #c0392b;
    --theme-hover-bg: rgba(0, 0, 0, 0.06);
    --theme-overlay-bg: rgba(0, 0, 0, 0.92);
    --theme-shadow-card: 0 8px 24px rgba(0, 0, 0, 0.12);
    --theme-shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.15);

    /* Navigation */
    --theme-drawer-bg: #FFFFFF;
    --theme-drawer-text: #424242;

    /* Typography */
    --theme-font-family: 'Roboto', 'Helvetica', 'Arial', sans-serif;
    --theme-font-family-mono: 'Roboto Mono', monospace;
    --theme-font-size-base: 1rem;
    --theme-heading-weight: 700;
    --theme-body-weight: 400;
    --theme-letter-spacing: normal;

    /* Shape */
    --theme-radius-sm: 4px;
    --theme-radius-md: 6px;
    --theme-radius-lg: 8px;
    --theme-card-border-width: 1px;

    /* Product card specifics */
    --theme-card-image-height: 400px;
    --theme-card-content-padding: 10px;
    --theme-card-hover-transform: translateY(-2px);

    /* Login page */
    --theme-login-bg: linear-gradient(135deg, #f5f7fa 0%, #e4e9f0 100%);
}