/**
 * BOND OS Unified Design System - Design Tokens
 * Centralized CSS Custom Properties (variables)
 *
 * Shared across all BOND OS properties:
 * - docs.bond-os.ai (documentation portal)
 * - bond-general.web.app/join-os/ (lead gen site)
 *
 * Last Updated: 2025-11-12
 *
 * Usage:
 * - Import this file in your HTML <head>
 * - Reference variables using var(--token-name)
 * - Example: color: var(--color-bond-red);
 *
 * Updating the design system:
 * - Change values in this file only
 * - All properties using these tokens will update automatically
 */

:root {
  /* ===== COLOR PALETTE ===== */

  /* Backgrounds */
  --color-deep-dark: #2F2E2E;
  --color-darker-surface: #3a3939;
  --color-darkest-depth: #1a1a1a;
  --color-pure-black: #000000;  /* Special: for video backgrounds only */

  /* Text */
  --color-text-primary: #EAEDEE;
  --color-text-secondary: #999999;
  --color-text-tertiary: #666666;

  /* Accents */
  --color-bond-red: #FF4B4F;
  --color-bond-red-dark: #e63e42;

  /* UI States */
  --color-success: #4a9e7c;
  --color-success-dark: #3a8e6c;
  --color-warning: #ff9800;
  --color-error: #ff6b6f;
  --color-info: #3b82f6;
  --color-info-dark: #2563eb;

  /* Borders */
  --color-border: #4a4949;

  /* Semantic Colors (for clarity) */
  --color-background-primary: var(--color-deep-dark);
  --color-background-secondary: var(--color-darker-surface);
  --color-background-tertiary: var(--color-darkest-depth);
  --color-accent-primary: var(--color-bond-red);
  --color-accent-hover: var(--color-bond-red-dark);


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

  /* Font Families */
  --font-headline: 'Scto Grotesk A Bond', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'Monaco', 'Courier New', 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-size-6xl: 3.75rem;    /* 60px */

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

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;


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

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


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

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;


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

  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-standard: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 8px 16px rgba(0, 0, 0, 0.4);
  --shadow-deep: 0 12px 24px rgba(0, 0, 0, 0.5);
  --shadow-floating: 0 20px 40px rgba(0, 0, 0, 0.6);


  /* ===== GRADIENTS ===== */

  --gradient-bond-red: linear-gradient(135deg, #FF4B4F 0%, #e63e42 100%);
  --gradient-background: linear-gradient(135deg, #2F2E2E 0%, #1a1919 100%);
  --gradient-card: linear-gradient(135deg, #3a3939 0%, #2F2E2E 100%);


  /* ===== TRANSITIONS ===== */

  --transition-fast: 150ms;
  --transition-normal: 300ms;
  --transition-slow: 500ms;

  --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --transition-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --transition-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);


  /* ===== Z-INDEX LAYERS ===== */

  --z-base: 0;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;
  --z-popover: 60;
  --z-tooltip: 70;


  /* ===== OPACITY VALUES ===== */

  --opacity-disabled: 0.5;
  --opacity-hover: 0.8;
  --opacity-muted: 0.6;


  /* ===== COMMON PATTERNS ===== */

  /* Card Styles */
  --card-bg: var(--color-darker-surface);
  --card-border: 1px solid var(--color-border);
  --card-border-accent: 4px solid var(--color-bond-red);
  --card-padding: var(--spacing-6);
  --card-radius: var(--radius-md);
  --card-shadow: var(--shadow-standard);

  /* Button Styles */
  --button-padding-y: var(--spacing-3);
  --button-padding-x: var(--spacing-4);
  --button-radius: var(--radius-md);
  --button-transition: all var(--transition-normal) var(--transition-ease);

  /* Input Styles */
  --input-bg: var(--color-darker-surface);
  --input-border: 2px solid var(--color-border);
  --input-border-focus: 2px solid var(--color-bond-red);
  --input-padding: var(--spacing-3);
  --input-radius: var(--radius-md);

  /* Header Styles */
  --header-bg: var(--color-darker-surface);
  --header-border: 1px solid var(--color-border);
  --header-height: 4rem;
}

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

/* These classes use the tokens above for common patterns */

.bond-card {
  background-color: var(--card-bg);
  border: var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
}

.bond-card-accent {
  border-left: var(--card-border-accent);
}

.bond-button-primary {
  background: var(--gradient-bond-red);
  color: var(--color-text-primary);
  padding: var(--button-padding-y) var(--button-padding-x);
  border-radius: var(--button-radius);
  border: none;
  font-weight: var(--font-weight-semibold);
  transition: var(--button-transition);
  cursor: pointer;
}

.bond-button-primary:hover {
  opacity: var(--opacity-hover);
  transform: translateY(-2px);
}

.bond-button-secondary {
  background-color: var(--color-background-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  padding: var(--button-padding-y) var(--button-padding-x);
  border-radius: var(--button-radius);
  font-weight: var(--font-weight-medium);
  transition: var(--button-transition);
  cursor: pointer;
}

.bond-button-secondary:hover {
  background-color: var(--color-background-primary);
}

.bond-input {
  background-color: var(--input-bg);
  border: var(--input-border);
  padding: var(--input-padding);
  border-radius: var(--input-radius);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  transition: border-color var(--transition-normal);
}

.bond-input:focus {
  border: var(--input-border-focus);
  outline: none;
}

.bond-headline {
  font-family: var(--font-headline);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
}

.bond-text-body {
  font-family: var(--font-body);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
}

.bond-text-muted {
  color: var(--color-text-secondary);
}

.bond-gradient-bg {
  background: var(--gradient-background);
}

.bond-gradient-red {
  background: var(--gradient-bond-red);
}
