/**
 * Glassmorphism Mouse Interaction Effect
 * Reusable glassmorphism component with mouse movement interaction
 */

:root {
    /* Glassmorphism Base Variables */
    --glass-bg-opacity: 0.1;
    --glass-blur: 20px;
    --glass-border-opacity: 0.2;
    --glass-tilt-intensity: 0.1;
    --glass-perspective: 1000px;
    --glass-transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
    
    /* Gradient Variables */
    --glass-gradient-start: rgba(255, 255, 255, 0.1);
    --glass-gradient-end: rgba(255, 255, 255, 0.05);
    
    /* Shadow Variables */
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    --glass-shadow-hover: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
}

/* Base Glassmorphism Container */
.glass-morph {
    background: rgba(255, 255, 255, var(--glass-bg-opacity));
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(255, 255, 255, var(--glass-border-opacity));
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    transition: var(--glass-transition), box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

/* Light Variant */
.glass-morph-light {
    --glass-bg-opacity: 0.15;
    --glass-blur: 25px;
    --glass-border-opacity: 0.25;
    background: rgba(255, 255, 255, var(--glass-bg-opacity));
    border-color: rgba(255, 255, 255, var(--glass-border-opacity));
}

/* Dark Variant */
.glass-morph-dark {
    --glass-bg-opacity: 0.08;
    --glass-blur: 30px;
    --glass-border-opacity: 0.15;
    background: rgba(0, 0, 0, var(--glass-bg-opacity));
    border-color: rgba(255, 255, 255, var(--glass-border-opacity));
}

/* Gradient Overlay Variant */
.glass-morph-gradient {
    background: linear-gradient(
        135deg,
        var(--glass-gradient-start) 0%,
        var(--glass-gradient-end) 100%
    );
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

/* Interactive Glassmorphism - Enables Mouse Interaction */
.glass-morph-interactive {
    perspective: var(--glass-perspective);
    transform-style: preserve-3d;
    transition: var(--glass-transition);
}

.glass-morph-interactive .glass-morph {
    transform-style: preserve-3d;
    transition: var(--glass-transition);
}

/* Hover State Enhancement */
.glass-morph:hover {
    box-shadow: var(--glass-shadow-hover);
    border-color: rgba(255, 255, 255, calc(var(--glass-border-opacity) + 0.1));
}

/* Light Reflection Effect (follows mouse) */
.glass-morph::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(
        circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(255, 255, 255, 0.1) 0%,
        transparent 50%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    border-radius: inherit;
}

.glass-morph-interactive:hover .glass-morph::before {
    opacity: 1;
}

/* Content inside glassmorphism - must receive clicks (forms, inputs) */
.glass-morph-content {
    position: relative;
    z-index: 1;
    transform-style: preserve-3d;
    pointer-events: auto;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    :root {
        --glass-blur: 15px;
        --glass-tilt-intensity: 0.05;
    }
    
    .glass-morph-interactive {
        /* Reduce 3D effects on mobile for better performance */
        perspective: 500px;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .glass-morph,
    .glass-morph-interactive {
        transition: none;
    }
    
    .glass-morph-interactive {
        perspective: none;
    }
}

/* Fallback for browsers without backdrop-filter support */
@supports not (backdrop-filter: blur(20px)) {
    .glass-morph {
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
    
    .glass-morph-dark {
        background: rgba(0, 0, 0, 0.3);
    }
}

/* Custom Intensity via Data Attribute */
.glass-morph-interactive[data-glass-intensity="low"] {
    --glass-tilt-intensity: 0.05;
}

.glass-morph-interactive[data-glass-intensity="medium"] {
    --glass-tilt-intensity: 0.1;
}

.glass-morph-interactive[data-glass-intensity="high"] {
    --glass-tilt-intensity: 0.15;
}

/* Animation for smooth entry */
@keyframes glassFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.glass-morph-animate {
    animation: glassFadeIn 0.6s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}