/* ========================================
   樱花飘落特效样式
   ======================================== */

/* 樱花容器 */
.sakura-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    overflow: hidden;
}

/* 樱花花瓣 */
.sakura-petal {
    position: absolute;
    top: -20px;
    width: 15px;
    height: 15px;
    background: radial-gradient(circle at 30% 30%, #ffb7d5, #ffc0e0);
    border-radius: 50% 0 50% 0;
    opacity: 0.8;
    pointer-events: none;
    animation: sakura-fall linear infinite;
    transform-origin: center;
    box-shadow: 0 2px 4px rgba(255, 182, 213, 0.3);
}

/* 樱花花瓣变体 - 不同颜色 */
.sakura-petal.variant-1 {
    background: radial-gradient(circle at 30% 30%, #ffc0e0, #ffd0eb);
}

.sakura-petal.variant-2 {
    background: radial-gradient(circle at 30% 30%, #ffaad5, #ffb7e0);
}

.sakura-petal.variant-3 {
    background: radial-gradient(circle at 30% 30%, #ff9dc8, #ffadd8);
}

/* 樱花花瓣大小变体 */
.sakura-petal.size-small {
    width: 10px;
    height: 10px;
}

.sakura-petal.size-medium {
    width: 15px;
    height: 15px;
}

.sakura-petal.size-large {
    width: 20px;
    height: 20px;
}

/* 樱花飘落动画 - 向左30度，速度加倍 */
@keyframes sakura-fall {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg) scale(1);
        opacity: 0;
    }
    
    10% {
        opacity: 0.8;
    }
    
    20% {
        transform: translateY(20vh) translateX(-12vw) rotate(90deg) scale(1.1);
    }
    
    40% {
        transform: translateY(40vh) translateX(-24vw) rotate(180deg) scale(0.9);
    }
    
    60% {
        transform: translateY(60vh) translateX(-36vw) rotate(270deg) scale(1.05);
    }
    
    80% {
        transform: translateY(80vh) translateX(-48vw) rotate(360deg) scale(0.95);
        opacity: 0.6;
    }
    
    100% {
        transform: translateY(100vh) translateX(-60vw) rotate(450deg) scale(0.8);
        opacity: 0;
    }
}

/* 樱花飘落动画变体 - 左摆加强 */
@keyframes sakura-fall-left {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0;
    }
    
    10% {
        opacity: 0.8;
    }
    
    25% {
        transform: translateY(25vh) translateX(-18vw) rotate(120deg);
    }
    
    50% {
        transform: translateY(50vh) translateX(-36vw) rotate(240deg);
    }
    
    75% {
        transform: translateY(75vh) translateX(-54vw) rotate(360deg);
        opacity: 0.6;
    }
    
    100% {
        transform: translateY(100vh) translateX(-72vw) rotate(480deg);
        opacity: 0;
    }
}

/* 樱花飘落动画变体 - 轻微右摆（主要还是向左） */
@keyframes sakura-fall-right {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 0;
    }
    
    10% {
        opacity: 0.8;
    }
    
    25% {
        transform: translateY(25vh) translateX(-8vw) rotate(-120deg);
    }
    
    50% {
        transform: translateY(50vh) translateX(-16vw) rotate(-240deg);
    }
    
    75% {
        transform: translateY(75vh) translateX(-24vw) rotate(-360deg);
        opacity: 0.6;
    }
    
    100% {
        transform: translateY(100vh) translateX(-32vw) rotate(-480deg);
        opacity: 0;
    }
}

/* 樱花飘落动画变体 - 螺旋向左 */
@keyframes sakura-fall-spiral {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg) scale(1);
        opacity: 0;
    }
    
    10% {
        opacity: 0.8;
    }
    
    20% {
        transform: translateY(20vh) translateX(-10vw) rotate(144deg) scale(1.1);
    }
    
    40% {
        transform: translateY(40vh) translateX(-20vw) rotate(288deg) scale(0.9);
    }
    
    60% {
        transform: translateY(60vh) translateX(-30vw) rotate(432deg) scale(1.05);
    }
    
    80% {
        transform: translateY(80vh) translateX(-40vw) rotate(576deg) scale(0.95);
        opacity: 0.6;
    }
    
    100% {
        transform: translateY(100vh) translateX(-50vw) rotate(720deg) scale(0.8);
        opacity: 0;
    }
}

/* 应用不同的动画 */
.sakura-petal.anim-left {
    animation-name: sakura-fall-left;
}

.sakura-petal.anim-right {
    animation-name: sakura-fall-right;
}

.sakura-petal.anim-spiral {
    animation-name: sakura-fall-spiral;
}

/* 樱花控制按钮 */
.sakura-toggle {
    position: fixed;
    bottom: 140px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ffb7d5 0%, #ffc0e0 100%);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10000;
    box-shadow: 0 4px 12px rgba(255, 182, 213, 0.4);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.sakura-toggle:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 6px 16px rgba(255, 182, 213, 0.6);
}

.sakura-toggle:active {
    transform: translateY(-1px) scale(1.05);
}

.sakura-toggle.disabled {
    background: linear-gradient(135deg, #ccc 0%, #ddd 100%);
    opacity: 0.6;
}

/* 樱花数量指示器 */
.sakura-counter {
    position: fixed;
    bottom: 200px;
    right: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 12px;
    color: #ff69b4;
    font-weight: 600;
    z-index: 10000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    display: none;
}

.sakura-counter.show {
    display: block;
    animation: fade-in 0.3s ease;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sakura-petal {
        width: 12px;
        height: 12px;
    }
    
    .sakura-petal.size-small {
        width: 8px;
        height: 8px;
    }
    
    .sakura-petal.size-large {
        width: 16px;
        height: 16px;
    }
    
    .sakura-toggle {
        width: 45px;
        height: 45px;
        bottom: 120px;
        right: 15px;
        font-size: 20px;
    }
    
    .sakura-counter {
        bottom: 170px;
        right: 15px;
        font-size: 11px;
        padding: 6px 10px;
    }
}

/* 性能优化 - 减少重绘 */
.sakura-petal {
    will-change: transform, opacity;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}