/* ============================================
   DESIGN TOKENS - Single Source of Truth
   HidPid.Web.MVC - All Areas
   ============================================ */

:root {
    /* === COLORS === */

    /* Primary (Blue) - Main brand color */
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;  /* Main primary */
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;

    /* Gray (Neutral) */
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-success-dark: #047857;

    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-error-dark: #dc2626;

    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-warning-dark: #d97706;

    --color-info: #3b82f6;
    --color-info-light: #dbeafe;
    --color-info-dark: #2563eb;

    /* === SPACING === */
    --spacing-0: 0;
    --spacing-px: 1px;
    --spacing-0-5: 0.125rem;  /* 2px */
    --spacing-1: 0.25rem;     /* 4px */
    --spacing-1-5: 0.375rem;  /* 6px */
    --spacing-2: 0.5rem;      /* 8px */
    --spacing-2-5: 0.625rem;  /* 10px */
    --spacing-3: 0.75rem;     /* 12px */
    --spacing-3-5: 0.875rem;  /* 14px */
    --spacing-4: 1rem;        /* 16px - base unit */
    --spacing-5: 1.25rem;     /* 20px */
    --spacing-6: 1.5rem;      /* 24px */
    --spacing-7: 1.75rem;     /* 28px */
    --spacing-8: 2rem;        /* 32px */
    --spacing-10: 2.5rem;     /* 40px */
    --spacing-12: 3rem;       /* 48px */
    --spacing-16: 4rem;       /* 64px */

    /* === TYPOGRAPHY === */
    --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* === BORDERS === */
    --border-radius-none: 0;
    --border-radius-sm: 0.125rem;    /* 2px */
    --border-radius-md: 0.375rem;    /* 6px */
    --border-radius-lg: 0.5rem;      /* 8px */
    --border-radius-xl: 0.75rem;     /* 12px */
    --border-radius-2xl: 1rem;       /* 16px */
    --border-radius-full: 9999px;

    --border-width-0: 0;
    --border-width-default: 1px;
    --border-width-2: 2px;
    --border-width-4: 4px;

    --border-color-default: var(--color-gray-200);
    --border-color-dark: var(--color-gray-300);

    /* === SHADOWS === */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    /* === Z-INDEX LAYERS === */
    --z-base: 0;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-slide-over-backdrop: 1040;
    --z-slide-over: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;

    /* === TRANSITIONS === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* === LAYOUT === */
    --header-height: 4rem;        /* 64px */
    --sidebar-width: 16rem;       /* 256px */
    --sidebar-width-collapsed: 4rem;  /* 64px */

    --modal-max-width-sm: 24rem;  /* 384px */
    --modal-max-width-md: 32rem;  /* 512px */
    --modal-max-width-lg: 48rem;  /* 768px */
    --modal-max-width-xl: 64rem;  /* 1024px */

    --slide-over-width: 32rem;    /* 512px */
}

/* === DARK MODE TOKENS (Future) === */
/*
[data-theme="dark"] {
    --color-primary-500: #60a5fa;
    --color-gray-50: #111827;
    --color-gray-900: #f9fafb;
}
*/