/**
 * XelaSphere Artifacts Design System
 * Design Tokens & CSS Variables
 * Based on XELASPHERE_ARTIFACTS_DESIGN_SPEC.md
 */

:root {
  /* ==================== */
  /* COLOR PALETTE - DARK THEME (DEFAULT) */
  /* ==================== */

  /* Primary Colors */
  --color-primary-50: #f0f9ff;
  --color-primary-100: #e0f2fe;
  --color-primary-200: #bae6fd;
  --color-primary-300: #7dd3fc;
  --color-primary-400: #38bdf8;
  --color-primary-500: #0ea5e9;
  --color-primary-600: #0284c7;
  --color-primary-700: #0369a1;
  --color-primary-800: #075985;
  --color-primary-900: #0c4a6e;

  /* Neutral Colors - Dark Theme */
  --color-neutral-50: #fafafa;
  --color-neutral-100: #f5f5f5;
  --color-neutral-200: #e5e5e5;
  --color-neutral-300: #d4d4d4;
  --color-neutral-400: #a3a3a3;
  --color-neutral-500: #737373;
  --color-neutral-600: #525252;
  --color-neutral-700: #404040;
  --color-neutral-800: #262626;
  --color-neutral-900: #171717;
  --color-neutral-950: #0a0a0a;

  /* Semantic Colors */
  --color-success-50: #f0fdf4;
  --color-success-500: #22c55e;
  --color-success-700: #15803d;

  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;
  --color-warning-700: #b45309;

  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-700: #b91c1c;

  --color-info-50: #eff6ff;
  --color-info-500: #3b82f6;
  --color-info-700: #1d4ed8;

  /* ==================== */
  /* CONTEXTUAL COLORS - DARK THEME */
  /* ==================== */

  /* Background */
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #262626;
  --bg-elevated: #2a2a2a;
  --bg-overlay: rgba(0, 0, 0, 0.8);
  --bg-hover: rgba(255, 255, 255, 0.05);
  --bg-active: rgba(255, 255, 255, 0.1);
  --bg-disabled: #1a1a1a;

  /* Text */
  --text-primary: #f5f5f5;
  --text-secondary: #a3a3a3;
  --text-tertiary: #737373;
  --text-disabled: #525252;
  --text-inverse: #0a0a0a;
  --text-link: #38bdf8;
  --text-link-hover: #7dd3fc;

  /* Borders */
  --border-primary: #404040;
  --border-secondary: #262626;
  --border-focus: #0ea5e9;
  --border-error: #ef4444;
  --border-success: #22c55e;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);

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

  /* Font Families */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;

  /* Font Sizes */
  --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 */
  --text-4xl: 2.25rem;     /* 36px */

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Letter Spacing */
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;

  /* ==================== */
  /* SPACING SCALE */
  /* ==================== */

  --space-0: 0;
  --space-1: 0.25rem;      /* 4px */
  --space-2: 0.5rem;       /* 8px */
  --space-3: 0.75rem;      /* 12px */
  --space-4: 1rem;         /* 16px */
  --space-5: 1.25rem;      /* 20px */
  --space-6: 1.5rem;       /* 24px */
  --space-8: 2rem;         /* 32px */
  --space-10: 2.5rem;      /* 40px */
  --space-12: 3rem;        /* 48px */
  --space-16: 4rem;        /* 64px */
  --space-20: 5rem;        /* 80px */
  --space-24: 6rem;        /* 96px */

  /* ==================== */
  /* SIZING */
  /* ==================== */

  /* Icon Sizes */
  --icon-xs: 1rem;         /* 16px */
  --icon-sm: 1.25rem;      /* 20px */
  --icon-md: 1.5rem;       /* 24px */
  --icon-lg: 2rem;         /* 32px */
  --icon-xl: 2.5rem;       /* 40px */

  /* Component Sizes */
  --height-button-sm: 2rem;      /* 32px */
  --height-button-md: 2.5rem;    /* 40px */
  --height-button-lg: 3rem;      /* 48px */
  --height-input: 2.5rem;        /* 40px */
  --height-tab: 2.5rem;          /* 40px */
  --height-header: 3.5rem;       /* 56px */

  /* ==================== */
  /* BORDER RADIUS */
  /* ==================== */

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

  /* ==================== */
  /* ANIMATION */
  /* ==================== */

  /* Durations */
  --duration-instant: 100ms;
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 500ms;

  /* Easing Functions */
  --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-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-smooth: cubic-bezier(0.45, 0, 0.15, 1);

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

  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1100;
  --z-fixed: 1200;
  --z-modal-backdrop: 1300;
  --z-modal: 1400;
  --z-popover: 1500;
  --z-tooltip: 1600;
  --z-toast: 1700;

  /* ==================== */
  /* ARTIFACT-SPECIFIC */
  /* ==================== */

  /* Panel Dimensions */
  --panel-width-default: 480px;
  --panel-width-min: 320px;
  --panel-width-max: 720px;
  --panel-border-width: 1px;

  /* Code Editor */
  --code-bg: #1e1e1e;
  --code-line-number: #858585;
  --code-selection: rgba(56, 189, 248, 0.2);
  --code-current-line: rgba(255, 255, 255, 0.04);

  /* Diff Colors */
  --diff-added-bg: rgba(34, 197, 94, 0.15);
  --diff-added-border: #22c55e;
  --diff-removed-bg: rgba(239, 68, 68, 0.15);
  --diff-removed-border: #ef4444;
  --diff-modified-bg: rgba(251, 191, 36, 0.15);
  --diff-modified-border: #fbbf24;

  /* ==================== */
  /* ARTIFACT PANEL - DESIGN SPEC COLORS */
  /* ==================== */

  /* Panel color tokens (from design spec) */
  --artifact-bg: #0f1116;
  --artifact-panel: #141824;
  --artifact-panel2: #0f1320;
  --artifact-border: rgba(255, 255, 255, 0.08);
  --artifact-text: rgba(255, 255, 255, 0.92);
  --artifact-muted: rgba(255, 255, 255, 0.62);
  --artifact-muted2: rgba(255, 255, 255, 0.45);
  --artifact-accent: #3b82f6;
  --artifact-accent2: rgba(59, 130, 246, 0.18);
  --artifact-hover: rgba(255, 255, 255, 0.06);
  --artifact-active: rgba(255, 255, 255, 0.10);

  /* Panel layout */
  --artifact-header-height: 56px;
  --artifact-panel-radius: 12px;

  /* Syntax highlighting (Prism/Monaco-like) */
  --syntax-comment: rgba(148, 163, 184, 0.75);
  --syntax-keyword: #c084fc;
  --syntax-string: #fbbf24;
  --syntax-number: #2dd4bf;
  --syntax-function: #60a5fa;
  --syntax-type: #22d3ee;
  --syntax-operator: #f472b6;
  --syntax-punctuation: rgba(255, 255, 255, 0.6);
}

/* ==================== */
/* LIGHT THEME */
/* ==================== */

[data-theme="light"] {
  /* Background */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e5e5e5;
  --bg-elevated: #ffffff;
  --bg-overlay: rgba(255, 255, 255, 0.95);
  --bg-hover: rgba(0, 0, 0, 0.05);
  --bg-active: rgba(0, 0, 0, 0.1);
  --bg-disabled: #f5f5f5;

  /* Text */
  --text-primary: #0a0a0a;
  --text-secondary: #525252;
  --text-tertiary: #737373;
  --text-disabled: #a3a3a3;
  --text-inverse: #f5f5f5;
  --text-link: #0284c7;
  --text-link-hover: #0369a1;

  /* Borders */
  --border-primary: #e5e5e5;
  --border-secondary: #f5f5f5;
  --border-focus: #0ea5e9;
  --border-error: #ef4444;
  --border-success: #22c55e;

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

  /* Code Editor */
  --code-bg: #f5f5f5;
  --code-line-number: #737373;
  --code-selection: rgba(14, 165, 233, 0.2);
  --code-current-line: rgba(0, 0, 0, 0.04);

  /* Diff Colors */
  --diff-added-bg: rgba(34, 197, 94, 0.1);
  --diff-removed-bg: rgba(239, 68, 68, 0.1);
  --diff-modified-bg: rgba(251, 191, 36, 0.1);
}

/* ==================== */
/* UTILITY CLASSES */
/* ==================== */

/* Display */
.hidden { display: none !important; }
.block { display: block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.grid { display: grid !important; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Text */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }

/* Transitions */
.transition { transition: all var(--duration-normal) var(--ease-in-out); }
.transition-fast { transition: all var(--duration-fast) var(--ease-in-out); }
.transition-colors { transition: color var(--duration-normal) var(--ease-in-out), background-color var(--duration-normal) var(--ease-in-out), border-color var(--duration-normal) var(--ease-in-out); }