/* Design System Variables - The Local Pond */
/* Based on DESIGN-REQUIREMENTS.md specifications */

:root {
  /* Color System - Professional tech credibility palette */

  /* Primary Colors - Professional blues and grays */
  --color-primary-900: #0a1628;
  --color-primary-800: #1a2942;
  --color-primary-700: #2a3f5f;
  --color-primary-600: #3a567f;
  --color-primary-500: #4a6fa0;
  --color-primary-400: #6b8ab8;
  --color-primary-300: #8da5c8;
  --color-primary-200: #b0c2d9;
  --color-primary-100: #d4e0eb;
  --color-primary-50: #f0f4f8;

  /* Accent Colors - Action-oriented for CTAs */
  --color-accent-900: #1e3a8a;
  --color-accent-800: #1e40af;
  --color-accent-700: #1d4ed8;
  --color-accent-600: #2563eb;
  --color-accent-500: #3b82f6;
  --color-accent-400: #60a5fa;
  --color-accent-300: #93c5fd;
  --color-accent-200: #bfdbfe;
  --color-accent-100: #dbeafe;
  --color-accent-50: #eff6ff;

  /* Neutral Colors - Clean whites and grays */
  --color-neutral-900: #111827;
  --color-neutral-800: #1f2937;
  --color-neutral-700: #374151;
  --color-neutral-600: #4b5563;
  --color-neutral-500: #6b7280;
  --color-neutral-400: #9ca3af;
  --color-neutral-300: #d1d5db;
  --color-neutral-200: #e5e7eb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-50: #f9fafb;
  --color-white: #ffffff;

  /* Success, Warning, Error (for feedback) */
  --color-success-600: #059669;
  --color-success-500: #10b981;
  --color-success-100: #d1fae5;

  --color-warning-600: #d97706;
  --color-warning-500: #f59e0b;
  --color-warning-100: #fef3c7;

  --color-error-600: #dc2626;
  --color-error-500: #ef4444;
  --color-error-100: #fee2e2;

  /* Semantic Colors */
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-text-tertiary: var(--color-neutral-500);
  --color-text-inverse: var(--color-white);

  --color-bg-primary: var(--color-white);
  --color-bg-secondary: var(--color-neutral-50);
  --color-bg-tertiary: var(--color-neutral-100);

  --color-border-light: var(--color-neutral-200);
  --color-border-medium: var(--color-neutral-300);
  --color-border-dark: var(--color-neutral-400);

  /* Typography Scale - Proportional scaling for readability */

  /* Font Families - System font stack for performance */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

  /* Font Sizes - Mobile First */
  --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-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-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 System - Calibrated for cognitive breathing room */
  --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 */
  --space-32: 8rem;      /* 128px */
  --space-40: 10rem;     /* 160px */
  --space-48: 12rem;     /* 192px */

  /* Container & Layout */
  --container-max-width: 1280px;
  --container-padding: var(--space-4);
  --container-padding-mobile: var(--space-4);
  --container-padding-tablet: var(--space-6);
  --container-padding-desktop: var(--space-8);

  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* Shadows - Subtle depth */
  --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 -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Motion & Animation - Physics-based transitions */

  /* Duration */
  --duration-instant: 0ms;
  --duration-fast: 100ms;
  --duration-normal: 200ms;
  --duration-moderate: 300ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  /* Easing 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-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* Z-index Layers */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;

  /* Breakpoints (for JS usage) */
  --breakpoint-mobile: 320px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1280px;
  --breakpoint-ultrawide: 1536px;

  /* Interactive Elements */
  --touch-target-min: 44px;
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
  --focus-ring-color: var(--color-accent-500);

  /* Gradients - Subtle for depth */
  --gradient-primary: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-500) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-accent-600) 0%, var(--color-accent-500) 100%);
  --gradient-testimonial-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-testimonial-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-testimonial-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-testimonial-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-testimonial-5: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-testimonial-6: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

/* Tablet Breakpoint Adjustments */
@media (min-width: 768px) {
  :root {
    --font-size-3xl: 2rem;      /* 32px */
    --font-size-4xl: 2.5rem;    /* 40px */
    --font-size-5xl: 3.5rem;    /* 56px */
    --font-size-6xl: 4.5rem;    /* 72px */

    --container-padding: var(--container-padding-tablet);
  }
}

/* Desktop Breakpoint Adjustments */
@media (min-width: 1024px) {
  :root {
    --font-size-3xl: 2.25rem;   /* 36px */
    --font-size-4xl: 3rem;      /* 48px */
    --font-size-5xl: 4rem;      /* 64px */
    --font-size-6xl: 5rem;      /* 80px */

    --container-padding: var(--container-padding-desktop);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-instant: 0ms;
    --duration-fast: 0ms;
    --duration-normal: 0ms;
    --duration-moderate: 0ms;
    --duration-slow: 0ms;
    --duration-slower: 0ms;
  }
}