:root {
    /* --- Vibrant Premium Palette (HSL for Depth) --- */
    --primary-h: 153;
    --primary-s: 100%;
    --primary-l: 16%; /* #005429 - Deep Baraja Emerald */
    
    --primary-color: hsl(var(--primary-h), var(--primary-s), var(--primary-l));
    --primary-dark: hsl(var(--primary-h), var(--primary-s), 10%);
    --primary-light: hsl(var(--primary-h), var(--primary-s), 22%);
    --primary-soft: hsla(var(--primary-h), var(--primary-s), var(--primary-l), 0.05);
    
    /* Luxury Accent: Champagne Gold */
    --accent-gold: #D4AF37;
    --accent-gold-soft: rgba(212, 175, 55, 0.1);
    
    --secondary-color: #90EE90;
    --accent-color: #32CD32;

    /* Status Colors */
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;

    /* Neutral Colors */
    --white: #ffffff;
    --black: #0f172a;
    --light-bg: #f8fafc;
    --light-gray: #f1f5f9;
    --medium-gray: #64748b;
    --dark-gray: #1e293b;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;

    /* --- Advanced Glassmorphism --- */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-shadow: 0 8px 32px 0 rgba(0, 84, 41, 0.08);
    --glass-blur: blur(24px);
    --glass-reflection: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 50%, rgba(255,255,255,0.2) 100%);
    
    --glass-dark-bg: rgba(15, 23, 42, 0.8);
    --glass-dark-border: rgba(255, 255, 255, 0.1);

    /* Gradients */
    --primary-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --surface-gradient: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 100%);
    --premium-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);

    /* Shadows - Deep Premium */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 10px 10px -5px rgba(0,0,0,0.03);
    --shadow-premium: 0 20px 40px rgba(0, 84, 41, 0.1), 0 10px 20px rgba(0, 0, 0, 0.05);

    /* Typography */
    --font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Outfit', 'Plus Jakarta Sans', sans-serif;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius - Premium Rounded */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-round: 9999px;

    /* Compatibility Aliases */
    --border-radius-sm: var(--radius-sm);
    --border-radius-md: var(--radius-md);
    --border-radius-lg: var(--radius-lg);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* --- Luxury Booking Suite --- */
    
    /* 8. Luxury Tier Palette */
    --tier-gold: linear-gradient(135deg, #D4AF37 0%, #f1d592 50%, #D4AF37 100%);
    --tier-silver: linear-gradient(135deg, #C0C0C0 0%, #e8e8e8 50%, #C0C0C0 100%);
    --tier-bronze: linear-gradient(135deg, #CD7F32 0%, #ebb68e 50%, #CD7F32 100%);
    --tier-emerald: linear-gradient(135deg, #005429 0%, #009646 100%);

    /* 9. Glass Refinement (Deep) */
    --glass-blur-deep: blur(32px);
    --glass-border-light: rgba(255, 255, 255, 0.4);

    /* 10. Forms & Inputs Elevation */
    --input-bg: var(--white);
    --input-border: #e2e8f0;
    --input-focus: var(--primary-color);
    --input-focus-glow: rgba(0, 84, 41, 0.15);
    --input-radius: 14px;
}