/* ===== ONYX MAIL CSS VARIABLES ===== */
/* Unified design system with purple accent theme */

:root {
  /* ===== COLOR SYSTEM ===== */
  /* Primary Purple Colors */
  --color-primary: #8b5cf6;           /* Primary purple */
  --color-primary-rgb: 139, 92, 246;  /* RGB values for rgba usage */
  --color-secondary: #7c3aed;         /* Secondary purple */
  --color-secondary-rgb: 124, 58, 237; /* RGB values for rgba usage */
  
  /* Dark Background Colors */
  --color-dark-base: #0a0a0a;         /* Deep black base */
  --color-dark-secondary: #111111;     /* Secondary dark */
  --color-dark-tertiary: #1a1a1a;     /* Tertiary dark */
  
  /* Text Colors */
  --color-text-primary: #e4e4e7;      /* Primary text */
  --color-text-secondary: #a3a3a3;    /* Secondary text */
  --color-text-muted: #6b7280;        /* Muted text */
  --color-text-mono: #9ca3af;         /* Monospace text */
  
  /* ===== BACKGROUND COLORS ===== */
  --bg-base: var(--color-dark-base);
  --bg-card: rgba(17, 17, 17, 0.8);
  --bg-card-hover: rgba(17, 17, 17, 0.9);
  --bg-purple-subtle: rgba(var(--color-primary-rgb), 0.1);
  --bg-purple-card: rgba(var(--color-primary-rgb), 0.05);
  
  /* ===== GRADIENTS ===== */
  --gradient-primary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  --gradient-text: var(--gradient-primary);
  --gradient-subtle: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  
  /* ===== BORDERS ===== */
  --border-purple: 1px solid rgba(var(--color-primary-rgb), 0.2);
  --border-purple-bright: 1px solid rgba(var(--color-primary-rgb), 0.4);
  --border-purple-subtle: 1px solid rgba(var(--color-primary-rgb), 0.1);
  --border-dark: 1px solid rgba(255, 255, 255, 0.1);
  --border-dark-subtle: 1px solid rgba(255, 255, 255, 0.05);
  
  /* ===== SPACING SYSTEM ===== */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 0.75rem;   /* 12px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  --space-4xl: 6rem;     /* 96px */
  --space-5xl: 8rem;     /* 128px */
  
  /* ===== TYPOGRAPHY SCALE ===== */
  --font-xs: 0.75rem;    /* 12px */
  --font-sm: 0.875rem;   /* 14px */
  --font-base: 1rem;     /* 16px */
  --font-lg: 1.125rem;   /* 18px */
  --font-xl: 1.25rem;    /* 20px */
  --font-2xl: 1.5rem;    /* 24px */
  --font-3xl: 2rem;      /* 32px */
  --font-4xl: 2.5rem;    /* 40px */
  --font-5xl: 3.5rem;    /* 56px */
  
  /* ===== FONT FAMILIES ===== */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  
  /* ===== LINE HEIGHTS ===== */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* ===== FONT WEIGHTS ===== */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* ===== BORDER RADIUS ===== */
  --radius-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  
  /* ===== SHADOWS ===== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.7);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.8);
  --shadow-purple: 0 10px 30px rgba(var(--color-primary-rgb), 0.3);
  --shadow-purple-subtle: 0 4px 12px rgba(var(--color-primary-rgb), 0.1);
  
  /* ===== TRANSITIONS ===== */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* ===== Z-INDEX SCALE ===== */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  
  /* ===== LAYOUT ===== */
  --container-max-width: 1200px;
  --container-padding: var(--space-md);
  
  /* ===== MOBILE BREAKPOINTS ===== */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  
  /* ===== ANIMATION DURATIONS ===== */
  --duration-fast: 150ms;
  --duration-base: 300ms;
  --duration-slow: 500ms;
  
  /* ===== COMPONENT SPECIFIC ===== */
  /* Touch targets for mobile */
  --touch-target: 44px;
  --touch-target-large: 56px;
  
  /* Form elements */
  --input-height: 44px;
  --input-padding: var(--space-sm) var(--space-md);
  
  /* Buttons */
  --btn-height: 44px;
  --btn-padding: var(--space-sm) var(--space-lg);
}

/* ===== MOBILE VARIABLE OVERRIDES ===== */
@media (max-width: 767px) {
  :root {
    /* Adjust spacing for mobile */
    --container-padding: var(--space-sm);
    
    /* Mobile typography scale */
    --font-3xl: 1.75rem;  /* Smaller on mobile */
    --font-4xl: 2rem;
    --font-5xl: 2.5rem;
    
    /* Mobile spacing adjustments */
    --space-2xl: 2rem;    /* Reduce large spacing on mobile */
    --space-3xl: 2.5rem;
    --space-4xl: 3rem;
  }
}