/**
 * BARBRI Simulations - Design Tokens
 *
 * Extended from barbri-cloud with fresh, bold accent colors
 * and motion-focused design system.
 */

:root {
    /* ============================================
       COLORS - BARBRI CORE
       ============================================ */

    /* Primary Brand Colors */
    --color-primary: #2A5488;
    --color-primary-dark: #1E3D66;
    --color-primary-light: #3A7CB8;
    --color-primary-tint: #E5ECF9;
    --color-primary-tint-hover: #D4E4F4;

    /* Accent Colors (BARBRI Blue - matches barbri-cloud) */
    --color-accent: #2A5488;
    --color-accent-dark: #1E3D66;
    --color-accent-light: #3A7CB8;
    --color-accent-tint: #E5ECF9;
    --color-accent-glow: rgba(42, 84, 136, 0.2);
    --color-accent-glow-strong: rgba(42, 84, 136, 0.35);

    /* Text Colors */
    --color-text-primary: #001722;
    --color-text-secondary: #464F57;
    --color-text-tertiary: #5C656D;
    --color-text-muted: #6B7280;
    --color-text-disabled: #9CA3AF;
    --color-text-inverse: #FFFFFF;

    /* Background Colors */
    --color-bg-page: #F8FAFC;
    --color-bg-card: #FFFFFF;
    --color-bg-subtle: #F1F5F9;
    --color-bg-hover: #F4F5F7;
    --color-bg-hover-accent: rgba(42, 84, 136, 0.08);
    --color-bg-active: #E2E8F0;
    --color-bg-dark: #0F172A;
    --color-bg-dark-card: #1E293B;

    /* Border Colors */
    --color-border: #E2E8F0;
    --color-border-light: #F1F5F9;
    --color-border-dark: #CBD5E1;
    --color-border-accent: var(--color-accent);
    --color-border-focus: var(--color-primary);

    /* Semantic Colors */
    --color-success: #16A34A;
    --color-success-light: #DCFCE7;
    --color-success-dark: #15803D;
    --color-error: #DC2626;
    --color-error-light: #FEE2E2;
    --color-error-dark: #B91C1C;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-warning-dark: #D97706;
    --color-info: #0EA5E9;
    --color-info-light: #E0F2FE;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0F172A 0%, #1E3D66 40%, #2A5488 70%, #3A7CB8 100%);
    --gradient-hero-accent: linear-gradient(135deg, #1E3D66 0%, #2A5488 50%, #3A7CB8 100%);
    --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    --gradient-card-hover: linear-gradient(135deg, rgba(42, 84, 136, 0.05) 0%, rgba(42, 84, 136, 0.08) 100%);
    --gradient-accent-glow: radial-gradient(ellipse at center, var(--color-accent-glow) 0%, transparent 70%);
    --gradient-dark-fade: linear-gradient(to bottom, transparent 0%, rgba(15, 23, 42, 0.8) 100%);

    /* ============================================
       TYPOGRAPHY
       ============================================ */

    /* Font Families */
    --font-family-heading: 'Bitter', Georgia, serif;
    --font-family-body: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Font Sizes (using clamp for fluid typography) */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-md: 1.125rem;     /* 18px */
    --font-size-lg: 1.25rem;      /* 20px */
    --font-size-xl: 1.5rem;       /* 24px */
    --font-size-2xl: 1.875rem;    /* 30px */
    --font-size-3xl: 2.25rem;     /* 36px */
    --font-size-4xl: 3rem;        /* 48px */
    --font-size-5xl: 3.75rem;     /* 60px */
    --font-size-6xl: 4.5rem;      /* 72px */

    /* 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-none: 1;
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* ============================================
       SPACING (8px base grid)
       ============================================ */

    --space-0: 0;
    --space-px: 1px;
    --space-0-5: 0.125rem;   /* 2px */
    --space-1: 0.25rem;      /* 4px */
    --space-1-5: 0.375rem;   /* 6px */
    --space-2: 0.5rem;       /* 8px */
    --space-2-5: 0.625rem;   /* 10px */
    --space-3: 0.75rem;      /* 12px */
    --space-3-5: 0.875rem;   /* 14px */
    --space-4: 1rem;         /* 16px */
    --space-5: 1.25rem;      /* 20px */
    --space-6: 1.5rem;       /* 24px */
    --space-7: 1.75rem;      /* 28px */
    --space-8: 2rem;         /* 32px */
    --space-9: 2.25rem;      /* 36px */
    --space-10: 2.5rem;      /* 40px */
    --space-11: 2.75rem;     /* 44px */
    --space-12: 3rem;        /* 48px */
    --space-14: 3.5rem;      /* 56px */
    --space-16: 4rem;        /* 64px */
    --space-20: 5rem;        /* 80px */
    --space-24: 6rem;        /* 96px */
    --space-28: 7rem;        /* 112px */
    --space-32: 8rem;        /* 128px */

    /* ============================================
       LAYOUT
       ============================================ */

    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1200px;
    --container-2xl: 1400px;

    --header-height: 72px;
    --footer-height: auto;

    /* ============================================
       BORDERS & RADIUS
       ============================================ */

    --radius-none: 0;
    --radius-sm: 0.25rem;    /* 4px */
    --radius-default: 0.375rem; /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-3xl: 2rem;      /* 32px */
    --radius-full: 9999px;

    /* Teardrop Pattern (BARBRI signature) */
    --radius-teardrop: 1.5rem 0 1.5rem 0;
    --radius-teardrop-sm: 1rem 0 1rem 0;
    --radius-teardrop-lg: 2rem 0 2rem 0;
    --radius-teardrop-inverse: 0 1.5rem 0 1.5rem;

    /* Border Widths */
    --border-width-default: 1px;
    --border-width-2: 2px;
    --border-width-4: 4px;

    /* ============================================
       SHADOWS
       ============================================ */

    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-default: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px 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);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* Accent Glow Shadows */
    --shadow-accent: 0 4px 14px 0 var(--color-accent-glow);
    --shadow-accent-lg: 0 8px 24px 0 var(--color-accent-glow);
    --shadow-accent-xl: 0 12px 32px 0 var(--color-accent-glow-strong);

    /* Focus Rings */
    --ring-offset-width: 2px;
    --ring-width: 2px;
    --ring-color: var(--color-accent);
    --ring-offset-color: var(--color-bg-card);

    /* ============================================
       TRANSITIONS & ANIMATIONS
       ============================================ */

    /* Durations */
    --duration-75: 75ms;
    --duration-100: 100ms;
    --duration-150: 150ms;
    --duration-200: 200ms;
    --duration-300: 300ms;
    --duration-500: 500ms;
    --duration-700: 700ms;
    --duration-1000: 1000ms;

    /* Timing Functions */
    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);

    /* Common Transitions */
    --transition-none: none;
    --transition-all: all var(--duration-200) var(--ease-in-out);
    --transition-default: color, background-color, border-color, box-shadow, transform var(--duration-200) var(--ease-in-out);
    --transition-colors: color, background-color, border-color var(--duration-150) var(--ease-in-out);
    --transition-opacity: opacity var(--duration-200) var(--ease-in-out);
    --transition-shadow: box-shadow var(--duration-200) var(--ease-in-out);
    --transition-transform: transform var(--duration-200) var(--ease-in-out);

    /* ============================================
       Z-INDEX SCALE
       ============================================ */

    --z-below: -1;
    --z-base: 0;
    --z-docked: 10;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-banner: 300;
    --z-overlay: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;
    --z-max: 9999;

    /* ============================================
       COMPONENT SIZES
       ============================================ */

    /* Buttons */
    --btn-height-sm: 2rem;       /* 32px */
    --btn-height-default: 2.75rem; /* 44px */
    --btn-height-lg: 3.25rem;    /* 52px */
    --btn-padding-x-sm: 0.75rem;
    --btn-padding-x: 1.25rem;
    --btn-padding-x-lg: 1.75rem;

    /* Inputs */
    --input-height-sm: 2rem;
    --input-height-default: 2.75rem;
    --input-height-lg: 3.25rem;

    /* Cards */
    --card-padding-sm: var(--space-4);
    --card-padding: var(--space-6);
    --card-padding-lg: var(--space-8);

    /* ============================================
       GLASSMORPHISM (NEW)
       ============================================ */

    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-dark: rgba(15, 23, 42, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-blur: blur(12px);
    --glass-blur-lg: blur(20px);
}

/* ============================================
   DARK MODE OVERRIDES
   ============================================ */

[data-theme="dark"],
.dark {
    --color-text-primary: #F8FAFC;
    --color-text-secondary: #CBD5E1;
    --color-text-tertiary: #94A3B8;

    --color-bg-page: #0F172A;
    --color-bg-card: #1E293B;
    --color-bg-subtle: #334155;
    --color-bg-hover: #475569;

    --color-border: #334155;
    --color-border-light: #475569;

    --glass-bg: rgba(30, 41, 59, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
}