/* CSS Custom Properties - Design System */
:root {
  /* Colors - Light Theme */
  --color-primary: #16a34a;
  --color-primary-hover: #15803d;
  --color-primary-light: #dcfce7;
  --color-primary-dark: #14532d;
  
  --color-secondary: #059669;
  --color-secondary-hover: #047857;
  --color-secondary-light: #d1fae5;
  --color-secondary-dark: #064e3b;
  
  --color-success: #22c55e;
  --color-warning: #f59e0b;
  --color-error: #dc2626;
  
  --color-text-primary: #111827;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-text-inverse: #ffffff;
  
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;
  --color-bg-overlay: rgba(255, 255, 255, 0.8);
  
  --color-border-primary: #e5e7eb;
  --color-border-secondary: #d1d5db;
  --color-border-focus: #16a34a;
  
  /* Spacing Scale */
  --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 */
  
  /* Typography */
  --font-family-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  
  --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-size-7xl: 4.5rem;     /* 72px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  
  /* Border Radius */
  --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;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* 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;
  
  /* Layout */
  --container-max-width: 1280px;
  --header-height: 4rem;
  
  /* Responsive Breakpoints */
  --breakpoint-mobile: 768px;    /* Mobile/Desktop breakpoint - below this is mobile, above is desktop */
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, #059669 100%);
  --gradient-bg: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 50%, #d1fae5 100%);
  
  /* Gallery specific colors */
  --color-gallery-bg: #111827;
  --color-gallery-bg-secondary: #1f2937;
  --color-gallery-accent: rgba(59, 130, 246, 0.1);
  --color-gallery-accent-secondary: rgba(147, 51, 234, 0.1);
  --color-gallery-border: rgba(255, 255, 255, 0.1);
  --color-gallery-text: #ffffff;
  --color-gallery-text-muted: #9ca3af;
  
  /* Glass morphism effects */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Gallery gradients */
  --gradient-gallery-bg: linear-gradient(135deg, var(--color-gallery-bg), var(--color-gallery-bg-secondary));
  --gradient-gallery-accent: linear-gradient(135deg, var(--color-gallery-accent), var(--color-gallery-accent-secondary));
}

/* Dark Theme */
[data-theme="dark"] {
  --color-text-primary: #ffffff;
  --color-text-secondary: #d1d5db;
  --color-text-muted: #9ca3af;
  --color-text-inverse: #111827;
  
  --color-bg-primary: #111827;
  --color-bg-secondary: #1f2937;
  --color-bg-tertiary: #374151;
  --color-bg-overlay: rgba(17, 24, 39, 0.8);
  
  --color-border-primary: #374151;
  --color-border-secondary: #4b5563;
  
  --gradient-bg: linear-gradient(135deg, #111827 0%, #1f2937 50%, #064e3b 100%);
}