:root {
    /* ========================================
       PRIMARY COLORS (Inspired by Venice/Burano)
       ======================================== */
    --primary-50: #e6f2ff;
    --primary-100: #b3d9ff;
    --primary-200: #80c0ff;
    --primary-300: #4da7ff;
    --primary-400: #1a8eff;
    --primary-500: #048ABF;  /* Main brand - Bright Blue */
    --primary-600: #037299;
    --primary-700: #025a73;
    --primary-800: #033E8C;  /* Deep Blue */
    --primary-900: #022952;

    /* ========================================
       ACCENT COLORS (Warm Mediterranean)
       ======================================== */
    --accent-50: #fff9e6;
    --accent-100: #fff0b3;
    --accent-200: #ffe680;
    --accent-300: #ffdd4d;
    --accent-400: #ffd31a;
    --accent-500: #F2B705;  /* Golden Yellow */
    --accent-600: #D96704;  /* Warm Orange */
    --accent-700: #bf5904;
    --accent-800: #a64c03;
    --accent-900: #8c3f03;

    /* ========================================
       NEUTRAL COLORS (Modern Grays)
       ======================================== */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* ========================================
       SEMANTIC COLORS
       ======================================== */
    --success-light: #d1fae5;
    --success: #10b981;
    --success-dark: #047857;

    --warning-light: #fed7aa;
    --warning: #f59e0b;
    --warning-dark: #d97706;

    --error-light: #fee2e2;
    --error: #ef4444;
    --error-dark: #dc2626;

    --info-light: #dbeafe;
    --info: #3b82f6;
    --info-dark: #1d4ed8;

    /* ========================================
       BACKGROUND & SURFACE
       ======================================== */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --surface: #ffffff;
    --surface-hover: var(--gray-50);

    /* ========================================
       TEXT COLORS
       ======================================== */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    --text-inverse: #ffffff;
    --text-link: var(--primary-600);
    --text-link-hover: var(--primary-700);

    /* ========================================
       BORDER COLORS
       ======================================== */
    --border-light: var(--gray-200);
    --border-medium: var(--gray-300);
    --border-dark: var(--gray-400);

    /* ========================================
       GLASSMORPHISM (Modern Frosted Glass)
       ======================================== */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-bg-dark: rgba(255, 255, 255, 0.5);
    --glass-border: rgba(255, 255, 255, 0.6);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    --glass-blur: 12px;

    /* ========================================
       GRADIENTS
       ======================================== */
    --gradient-primary: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-500) 0%, var(--accent-600) 100%);
    --gradient-sunset: linear-gradient(135deg, #EEEB73 0%, #F2E064 12.5%, #F5D454 25%, #F7C744 37.5%, #F9B834 50%, #FBA925 62.5%, #FD991A 75%, #FF8A15 87.5%, #e4af86 100%);
    --gradient-hero: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 50%, var(--accent-600) 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(0,0,0,0.03) 100%);

    /* ========================================
       SHADOWS (Elevation System)
       ======================================== */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    /* Colored Shadows */
    --shadow-primary: 0 10px 25px -5px rgba(4, 138, 191, 0.3);
    --shadow-accent: 0 10px 25px -5px rgba(242, 183, 5, 0.3);

    /* ========================================
       BORDER RADIUS
       ======================================== */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* ========================================
       SPACING SCALE (Based on 4px/0.25rem)
       ======================================== */
    --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 */

    /* ========================================
       TYPOGRAPHY
       ======================================== */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', 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 */
    --text-5xl: 3rem;       /* 48px */
    --text-6xl: 3.75rem;    /* 60px */

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;

    /* ========================================
       TRANSITIONS & ANIMATIONS
       ======================================== */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    --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);

    /* ========================================
       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;

    /* ========================================
       CONTAINER & LAYOUT
       ======================================== */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;

    /* ========================================
       LEGACY SUPPORT (Backwards Compatibility)
       ======================================== */
    --accent-color-1: var(--primary-800);
    --accent-color-2: var(--primary-500);
    --warm-yellow-1: #EEEB73;
    --warm-yellow-2: #F2E064;
    --warm-orange-1: #F5D454;
    --warm-orange-2: #F7C744;
    --warm-orange-3: #FD991A;
    --warm-red: #BF1304;
}

/* ========================================
   GLOBAL RESETS & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus Styles for Accessibility */
:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}