/* 高端艺术圣诞祝福页面 - 诺贝尔奖级设计 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 音乐控制按钮 */
.music-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(197, 160, 89, 0.2);
    border: 2px solid rgba(197, 160, 89, 0.5);
    cursor: pointer;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.music-btn:hover {
    background: rgba(197, 160, 89, 0.4);
    transform: scale(1.1);
}

.music-btn svg {
    width: 24px;
    height: 24px;
    color: #C5A059;
}

/* Irish Grover 字体 */
body {
    font-family: 'Irish Grover', cursive;
    background: #F9F8F4;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 3D背景画布 */
.bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* 主容器 */
.container {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

/* Hero区域 */
.hero-section {
    text-align: center;
    cursor: pointer;
    position: relative;
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 抽象艺术圣诞树SVG */
.tree-svg {
    width: 100%;
    height: auto;
    max-height: 75vh;
    filter: drop-shadow(0 20px 40px rgba(197, 160, 89, 0.15));
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.tree-svg:hover {
    filter: drop-shadow(0 25px 50px rgba(197, 160, 89, 0.25));
    transform: scale(1.02);
}

/* 树内容过渡效果 */
#tree-content {
    transition: opacity 0.4s ease-in-out;
}

.tree-variation {
    transition: opacity 0.4s ease-in-out;
}

/* 金箔曲线动画 */
.gold-curve {
    animation: goldShimmer 4s ease-in-out infinite;
}

.main-curve {
    animation: curveFloat 6s ease-in-out infinite;
}

.side-curve.left {
    animation: curveFloat 7s ease-in-out infinite;
    animation-delay: -1s;
}

.side-curve.right {
    animation: curveFloat 7s ease-in-out infinite;
    animation-delay: -2s;
}

@keyframes goldShimmer {
    0%, 100% { 
        filter: brightness(1);
    }
    50% { 
        filter: brightness(1.15);
    }
}

@keyframes curveFloat {
    0%, 100% { 
        transform: translateY(0);
    }
    50% { 
        transform: translateY(-3px);
    }
}

/* 有机形状动画 */
.organic-shape {
    animation: shapeBreath 5s ease-in-out infinite;
}

.green-shape {
    animation-delay: -1s;
}

.red-shape {
    animation: shapeGlow 3s ease-in-out infinite;
}

@keyframes shapeBreath {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.05);
        opacity: 0.9;
    }
}

@keyframes shapeGlow {
    0%, 100% { 
        filter: brightness(1) drop-shadow(0 0 5px rgba(220, 38, 38, 0.3));
    }
    50% { 
        filter: brightness(1.2) drop-shadow(0 0 15px rgba(220, 38, 38, 0.5));
    }
}

/* 金色装饰点 */
.gold-dot {
    animation: dotTwinkle 2s ease-in-out infinite;
}

@keyframes dotTwinkle {
    0%, 100% { 
        opacity: 0.8;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.2);
    }
}

/* 树顶星星 */
.tree-star {
    animation: starSparkle 3s ease-in-out infinite;
    transform-origin: center;
}

@keyframes starSparkle {
    0%, 100% { 
        filter: brightness(1) drop-shadow(0 0 10px rgba(197, 160, 89, 0.5));
        transform: scale(1) rotate(0deg);
    }
    50% { 
        filter: brightness(1.3) drop-shadow(0 0 20px rgba(197, 160, 89, 0.8));
        transform: scale(1.1) rotate(5deg);
    }
}

/* 祝福文字区域 - 靠近树 */
.blessing-section {
    text-align: center;
    margin-top: 0.5rem;
    animation: textReveal 1.2s ease-out forwards;
    animation-delay: 0.5s;
    opacity: 0;
}

@keyframes textReveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 两行文字一样大，使用Irish Grover */
.main-message {
    font-family: 'Irish Grover', cursive;
    font-size: 2.8rem;
    font-weight: 400;
    color: #C5A059;
    margin-bottom: 0.3rem;
    letter-spacing: 2px;
}

/* 主标题 - 同样大小 */
.christmas-message {
    font-family: 'Irish Grover', cursive;
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: 2px;
    color: #C5A059;
}

/* 动态粒子容器 */
.particle-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 4;
    overflow: hidden;
}

/* 粒子样式 */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

/* 全屏下雪效果 */
.snow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
    overflow: hidden;
}

/* 六角形雪花 */
.snowflake-hex {
    position: absolute;
    top: -50px;
    animation: snowfallHex linear infinite;
}

@keyframes snowfallHex {
    0% {
        transform: translateY(-50px) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.4;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

/* 圆点雪花 */
.snowflake-dot {
    position: absolute;
    top: -10px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: snowfallDot linear infinite;
}

@keyframes snowfallDot {
    0% {
        transform: translateY(-10px) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.5;
    }
    100% {
        transform: translateY(100vh) translateX(20px);
        opacity: 0;
    }
}

/* 大屏幕优化 */
@media (min-width: 1400px) {
    .hero-section {
        max-width: 1000px;
    }
    
    .tree-svg {
        max-height: 80vh;
    }
    
    .christmas-message {
        font-size: 3.5rem;
        letter-spacing: 3px;
    }
    
    .main-message {
        font-size: 3.5rem;
        letter-spacing: 3px;
    }
}

@media (min-width: 1800px) {
    .hero-section {
        max-width: 1200px;
    }
    
    .tree-svg {
        max-height: 85vh;
    }
    
    .christmas-message {
        font-size: 4rem;
        letter-spacing: 4px;
    }
    
    .main-message {
        font-size: 4rem;
        letter-spacing: 4px;
    }
}

/* 平板响应式 */
@media (max-width: 1024px) {
    .container {
        padding: 1.5rem;
    }
    
    .hero-section {
        max-width: 600px;
    }
    
    .tree-svg {
        max-height: 60vh;
    }
    
    .christmas-message {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }
    
    .main-message {
        font-size: 2.5rem;
        letter-spacing: 2px;
    }
}

/* 手机响应式 */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .hero-section {
        max-width: 100%;
    }
    
    .tree-svg {
        max-height: 55vh;
    }
    
    .blessing-section {
        margin-top: 0.5rem;
    }
    
    .christmas-message {
        font-size: 2rem;
        letter-spacing: 2px;
    }
    
    .main-message {
        font-size: 2rem;
        letter-spacing: 2px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0.5rem;
    }
    
    .tree-svg {
        max-height: 50vh;
    }
    
    .blessing-section {
        margin-top: 0.3rem;
    }
    
    .christmas-message {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }
    
    .main-message {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }
}

/* 性能优化 */
.tree-svg,
.gold-curve,
.organic-shape,
.tree-star,
.snowflake-hex,
.snowflake-dot {
    will-change: transform, opacity;
    backface-visibility: hidden;
}

/* 减少动画对性能影响 */
@media (prefers-reduced-motion: reduce) {
    .gold-curve,
    .organic-shape,
    .tree-star,
    .gold-dot,
    .snowflake-hex,
    .snowflake-dot {
        animation: none;
    }
    
    .christmas-message {
        animation: none;
        background-position: 50% 50%;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background: #1a1a1a;
    }
    
    .main-message {
        color: #e5e5e5;
    }
}