/* ==========================================================================
   DESIGN TOKENS & CSS VARIABLES
   ========================================================================== */

:root {
    /* Brand Colors - Mandatory System */
    --primary-blue: #0757B5;
    --secondary-blue: #2E8DCA;
    --deep-navy: #12345B;
    --light-blue: #EAF5FC;
    --light-blue-hover: #D8ECF9;
    --accent-orange: #F7941D;
    --accent-orange-hover: #E07D0C;
    --white: #FFFFFF;
    --soft-bg: #F7FAFC;
    --text-primary: #172B4D;
    --text-secondary: #5B6B7A;
    --text-muted: #8998A8;
    --border: #D9E7F2;
    --border-hover: #B8D3EB;

    /* Semantic Aliases */
    --surface-card: #FFFFFF;
    --surface-alt: #F0F7FC;
    --surface-hero: #F7FAFC;
    --surface-navy: #12345B;

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Font Sizes (Fluid Clamp) */
    --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
    --font-size-sm: clamp(0.875rem, 0.825rem + 0.25vw, 0.9375rem);
    --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
    --font-size-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
    --font-size-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
    --font-size-2xl: clamp(1.625rem, 1.45rem + 0.85vw, 2rem);
    --font-size-3xl: clamp(2rem, 1.75rem + 1.25vw, 2.75rem);
    --font-size-4xl: clamp(2.5rem, 2.1rem + 1.8vw, 3.5rem);
    --font-size-display: clamp(2.85rem, 2.3rem + 2.5vw, 4.25rem);

    /* Spacing System */
    --space-2xs: 0.25rem;
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4.5rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* Section Padding */
    --section-padding-y: clamp(3.5rem, 2.5rem + 4vw, 6.5rem);

    /* Layout Constraints */
    --container-max: 1240px;
    --container-narrow: 980px;
    --container-wide: 1380px;
    --container-padding: clamp(1rem, 0.75rem + 1.25vw, 2rem);

    /* Radius System */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-2xl: 22px;
    --radius-pill: 9999px;

    /* Shadows (Subtle, Medical Grade) */
    --shadow-subtle: 0 2px 6px rgba(18, 52, 91, 0.04);
    --shadow-card: 0 4px 16px rgba(18, 52, 91, 0.06);
    --shadow-hover: 0 12px 32px rgba(18, 52, 91, 0.12);
    --shadow-nav: 0 4px 20px rgba(7, 87, 181, 0.08);
    --shadow-cta: 0 8px 24px rgba(7, 87, 181, 0.25);
    --shadow-orange: 0 8px 24px rgba(247, 148, 29, 0.35);

    /* Transitions & Easings */
    --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-base: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);

    /* Z-Index Hierarchy */
    --z-negative: -1;
    --z-base: 1;
    --z-badge: 10;
    --z-sticky: 100;
    --z-nav: 1000;
    --z-drawer: 1100;
    --z-modal: 1200;
    --z-toast: 1300;
    --z-preloader: 9999;
}