/**
 * WordPress Snow Effect - Frontend CSS
 * Styles for snow animation and effects
 */

/* Snow Container */
.add-snow-container {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    /* Custom property to allow dynamic color override */
    --add-snowflake-color: #ffffff;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    pointer-events: none !important;
    z-index: 9999 !important;
    overflow: hidden !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    box-sizing: border-box !important;
    transform: none !important;
}

/* Basic Snowflake Styles */
.snowflake {
    position: absolute; /* JS controls translate3d */
    color: var(--add-snowflake-color, #ffffff);
    font-size: 10px;
    user-select: none;
    pointer-events: none;
    will-change: transform, opacity;
    transform: translateZ(0); /* GPU hint */
    font-family: Arial, sans-serif;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.1);
    margin: 0;
    padding: 0;
    border: none;
    z-index: 1;
}

/* Snowflake Types */
.snowflake-default {
    font-weight: normal;
}

.snowflake-emoji {
    font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
}

.snowflake-star {
    font-weight: bold;
}

.snowflake-circle {
    border-radius: 50%;
    display: inline-block;
    width: 1em;
    height: 1em;
    background-color: currentColor;
    text-indent: -9999px;
}

.snowflake-diamond {
    transform: rotate(45deg);
    display: inline-block;
    width: 0.7em;
    height: 0.7em;
    background-color: currentColor;
    text-indent: -9999px;
}

.snowflake-cross {
    font-weight: bold;
    font-size: 1.2em;
}

/* Custom Image Snowflakes */
.snowflake.custom-image {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    text-indent: -9999px;
    width: 1em;
    height: 1em;
    display: inline-block;
}

/* Intensity Variations */
.add-snow-container.intensity-light .snowflake {
    opacity: 0.6;
    font-size: 8px;
}

.add-snow-container.intensity-medium .snowflake {
    opacity: 0.8;
    font-size: 10px;
}

.add-snow-container.intensity-heavy .snowflake {
    opacity: 0.9;
    font-size: 12px;
}

/* Interactive Effects */
.add-snow-container.mouse-interactive .snowflake {
    transition: transform 0.1s ease-out;
}

.add-snow-container.mouse-interactive .snowflake:hover {
    transform: scale(1.2) translateZ(0) !important; /* maintain hover scale */
}

/* Click Interactive Snowflakes */
.add-snow-container.click-interactive .snowflake {
    pointer-events: auto;
    cursor: pointer;
}

/* Accumulation Layer */
.snow-accumulation {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    pointer-events: none;
    overflow: hidden;
}

.accumulated-snow {
    position: absolute;
    background-color: #ffffff;
    border-radius: 1px 1px 0 0;
    opacity: 0.7;
    animation: accumulate 0.5s ease-out;
}

/* Animations */
@keyframes snowflake-drift {
    0% {
        transform: translateX(0px) translateZ(0);
    }
    100% {
        transform: translateX(10px) translateZ(0);
    }
}

@keyframes accumulate {
    from {
        transform: translateY(-10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 0.7;
    }
}

/* Gradient Effects */
.snowflake.gradient-radial-white-blue {
    background: radial-gradient(circle, #ffffff 0%, #e6f3ff 100%);
    color: transparent;
    border-radius: 50%;
    display: inline-block;
    width: 1em;
    height: 1em;
}

.snowflake.gradient-radial-white-cyan {
    background: radial-gradient(circle, #ffffff 0%, #e0ffff 100%);
    color: transparent;
    border-radius: 50%;
    display: inline-block;
    width: 1em;
    height: 1em;
}

.snowflake.gradient-linear-white-transparent {
    background: linear-gradient(45deg, #ffffff 0%, transparent 100%);
    color: transparent;
    border-radius: 50%;
    display: inline-block;
    width: 1em;
    height: 1em;
}

.snowflake.gradient-rainbow {
    background: linear-gradient(45deg, #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #9400d3);
    color: transparent;
    border-radius: 50%;
    display: inline-block;
    width: 1em;
    height: 1em;
    animation: rainbow-rotate 3s linear infinite;
}

@keyframes rainbow-rotate {
    from {
        filter: hue-rotate(0deg);
    }
    to {
        filter: hue-rotate(360deg);
    }
}

/* Device-Specific Styles */
@media (max-width: 768px) {
    .add-snow-container.mobile-device .snowflake {
        font-size: 8px;
        opacity: 0.6;
    }
    
    .add-snow-container.mobile-device.intensity-heavy .snowflake {
        font-size: 10px;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .add-snow-container.tablet-device .snowflake {
        font-size: 9px;
        opacity: 0.7;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .add-snow-container {
        display: none !important;
    }
    
    .snowflake {
        animation: none !important;
        transition: none !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .snowflake {
        color: #ffffff !important;
        text-shadow: 2px 2px 2px #000000;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .snowflake {
        color: #f0f8ff;
        text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
    }
    
    .accumulated-snow {
        background-color: #f0f8ff;
    }
}

/* Performance Optimizations */
.snowflake {
    /* Use transform instead of changing left/top for better performance */
    backface-visibility: hidden;
    transform-style: preserve-3d;
    
    /* Optimize text rendering */
    text-rendering: optimizeSpeed;
    -webkit-font-smoothing: subpixel-antialiased;
    
    /* Prevent layout thrashing */
    contain: layout style paint;
}

/* Print Styles */
@media print {
    .add-snow-container {
        display: none !important;
    }
}

/* Focus Indicators for Accessibility */
.add-snow-container.click-interactive .snowflake:focus {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}

/* Size Variations */
.snowflake.size-tiny {
    font-size: 6px;
}

.snowflake.size-small {
    font-size: 8px;
}

.snowflake.size-medium {
    font-size: 12px;
}

.snowflake.size-large {
    font-size: 16px;
}

.snowflake.size-huge {
    font-size: 20px;
}

/* Multi-color Snowflakes */
.snowflake.multicolor-1 { color: #e6f3ff; }
.snowflake.multicolor-2 { color: #cce7ff; }
.snowflake.multicolor-3 { color: #b3d9ff; }
.snowflake.multicolor-4 { color: #99ccff; }
.snowflake.multicolor-5 { color: #80bfff; }

/* Blur Effect for Depth */
.snowflake.depth-1 { filter: blur(0px); }
.snowflake.depth-2 { filter: blur(0.5px); opacity: 0.9; }
.snowflake.depth-3 { filter: blur(1px); opacity: 0.8; }
.snowflake.depth-4 { filter: blur(1.5px); opacity: 0.7; }
.snowflake.depth-5 { filter: blur(2px); opacity: 0.6; }

/* Special Effects */
.snowflake.glow {
    text-shadow: 0 0 5px currentColor;
}

.snowflake.sparkle {
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0.8;
        transform: scale(1) translateZ(0);
    }
    50% {
        opacity: 1;
        transform: scale(1.1) translateZ(0);
    }
}

/* Wind Effects */
.add-snow-container.wind-left .snowflake {
    animation: wind-drift-left 4s ease-in-out infinite alternate;
}

.add-snow-container.wind-right .snowflake {
    animation: wind-drift-right 4s ease-in-out infinite alternate;
}

@keyframes wind-drift-left {
    0% {
        transform: translateX(0px) translateZ(0);
    }
    100% {
        transform: translateX(-15px) translateZ(0);
    }
}

@keyframes wind-drift-right {
    0% {
        transform: translateX(0px) translateZ(0);
    }
    100% {
        transform: translateX(15px) translateZ(0);
    }
}

/* Loading States */
.add-snow-container.loading {
    opacity: 0;
    transition: opacity 0.5s ease-in;
}

.add-snow-container.loaded {
    opacity: 1;
}

/* Error States */
.add-snow-container.error {
    display: none;
}

/* Debug Mode (for development) */
.add-snow-container.debug .snowflake {
    border: 1px solid red;
}

.add-snow-container.debug .snowflake::after {
    content: attr(data-id);
    position: absolute;
    top: -15px;
    left: 0;
    font-size: 8px;
    color: red;
    background: white;
    padding: 1px 2px;
}

/* Color Preset Emoji Filters */
/* Blue: default (no filter) */
.add-snow-container.color-preset-blue .snowflake img.emoji { filter: none !important; }
/* White */
.add-snow-container.color-preset-white .snowflake img.emoji { filter: brightness(0) invert(1) !important; }
/* Red */
.add-snow-container.color-preset-red .snowflake img.emoji { filter: hue-rotate(175deg) saturate(3) brightness(1) !important; }
/* Gold */
.add-snow-container.color-preset-gold .snowflake img.emoji { filter: hue-rotate(250deg) saturate(2) brightness(1.2) !important; }
/* Pink */
.add-snow-container.color-preset-pink .snowflake img.emoji { filter: hue-rotate(150deg) saturate(2) brightness(1.2) !important; }
/* Green */
.add-snow-container.color-preset-green .snowflake img.emoji { filter: hue-rotate(320deg) saturate(2) brightness(1.2) !important; }