/* ============================================================
   OCILISNI DESIGN SYSTEM - CSS VARIABLES
   ============================================================ */

:root {
    /* ============ COLOR PALETTE ============ */
    /* Primary Colors - Biotech Focus */
    --color-primary: #0F766E;           /* Deep Teal */
    --color-primary-light: #14B8A6;     /* Light Teal */
    --color-primary-dark: #0D5B57;      /* Dark Teal */
    
    /* Secondary Colors */
    --color-secondary: #0369A1;         /* Ocean Blue */
    --color-secondary-light: #0EA5E9;   /* Light Blue */
    --color-secondary-dark: #0C4A8C;    /* Dark Blue */
    
    /* Accent Colors */
    --color-accent: #059669;            /* Emerald Green */
    --color-accent-light: #10B981;      /* Light Emerald */
    --color-accent-dark: #047857;       /* Dark Emerald */
    
    --color-highlight: #F59E0B;         /* Amber/Gold */
    --color-highlight-light: #FBBF24;   /* Light Amber */
    --color-highlight-dark: #D97706;    /* Dark Amber */
    
    /* Neutral Colors */
    --color-dark: #1F2937;              /* Charcoal */
    --color-dark-light: #374151;        /* Light Charcoal */
    --color-light: #F8FAFC;             /* Off-white */
    --color-light-gray: #F3F4F6;        /* Light Gray */
    --color-medium-gray: #E5E7EB;       /* Medium Gray */
    --color-dark-gray: #9CA3AF;         /* Dark Gray */
    
    /* Status Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;
    
    /* ============ TYPOGRAPHY ============ */
    /* Font Families */
    --font-family-heading: 'Poppins', 'Inter', sans-serif;
    --font-family-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-family-mono: 'Monaco', 'Menlo', 'Consolas', monospace;
    
    /* Font Sizes */
    --font-size-xs: 0.75rem;            /* 12px */
    --font-size-sm: 0.875rem;           /* 14px */
    --font-size-base: 1rem;             /* 16px */
    --font-size-lg: 1.125rem;           /* 18px */
    --font-size-xl: 1.25rem;            /* 20px */
    --font-size-2xl: 1.5rem;            /* 24px */
    --font-size-3xl: 1.875rem;          /* 30px */
    --font-size-4xl: 2.25rem;           /* 36px */
    --font-size-5xl: 3rem;              /* 48px */
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;
    
    /* Letter Spacing */
    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.05em;
    
    /* ============ SPACING (8px Grid) ============ */
    --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: 3rem;                /* 48px */
    --spacing-3xl: 4rem;                /* 64px */
    --spacing-4xl: 5rem;                /* 80px */
    --spacing-5xl: 6rem;                /* 96px */
    
    /* ============ LAYOUT ============ */
    --container-max-width: 1200px;
    --container-padding: var(--spacing-lg);
    
    /* Header Heights */
    --header-height: 70px;
    
    /* Section Vertical Spacing */
    --section-padding-desktop: var(--spacing-5xl);
    --section-padding-tablet: var(--spacing-3xl);
    --section-padding-mobile: var(--spacing-2xl);
    
    /* ============ TRANSITIONS & ANIMATIONS ============ */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    --ease-in: ease-in;
    --ease-out: ease-out;
    --ease-in-out: ease-in-out;
    --ease-quad: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-cubic: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* ============ SHADOWS ============ */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* ============ BORDER RADIUS ============ */
    --border-radius-none: 0;
    --border-radius-sm: 0.25rem;        /* 4px */
    --border-radius-base: 0.5rem;       /* 8px */
    --border-radius-md: 0.75rem;        /* 12px */
    --border-radius-lg: 1rem;           /* 16px */
    --border-radius-xl: 1.5rem;         /* 24px */
    --border-radius-full: 9999px;       /* Full circle */
    
    /* ============ Z-INDEX ============ */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
}

/* Dark Mode Support (Optional for future) */
@media (prefers-color-scheme: dark) {
    :root {
        /* Can add dark mode overrides here */
    }
}