/* 灯笼动画 */
@keyframes lanternSwing {

    0%,
    100% {
        transform: rotate(-3deg);
    }

    50% {
        transform: rotate(3deg);
    }
}

@keyframes lanternGlow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(255, 77, 77, 0.6);
        filter: brightness(1);
    }

    50% {
        box-shadow: 0 0 30px rgba(255, 77, 77, 0.8);
        filter: brightness(1.2);
    }
}

.lantern {
    position: absolute;
    width: 50px;
    height: 70px;
    background-color: var(--lantern-red);
    border-radius: 25px;
    box-shadow: 0 0 20px rgba(255, 77, 77, 0.6);
    animation:
        lanternSwing 3s ease-in-out infinite,
        lanternGlow 2s ease-in-out infinite;
    transform-origin: top center;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--lantern-gold);
    font-weight: bold;
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
}

/* 灯笼顶部 */
.lantern::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 8px;
    background-color: var(--lantern-gold);
    border-radius: 8px 8px 0 0;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.2);
}

/* 灯笼装饰 */
.lantern::after {
    content: attr(data-character);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--lantern-gold);
    font-size: 24px;
    font-weight: bold;
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
}

/* 灯笼底部流苏 */
.lantern-decoration {
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 15px;
    overflow: hidden;
}

.lantern-decoration::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 15px;
    background-color: var(--lantern-gold);
    box-shadow:
        -6px 0 0 var(--lantern-gold),
        6px 0 0 var(--lantern-gold),
        -12px 0 0 var(--lantern-gold),
        12px 0 0 var(--lantern-gold);
}

/* 灯笼的光晕效果 */
.lantern-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center,
            rgba(255, 255, 255, 0.3) 0%,
            transparent 70%);
    border-radius: inherit;
    pointer-events: none;
}

/* 云纹动画 */
@keyframes cloudFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.cloud-pattern {
    animation: cloudFloat 10s ease-in-out infinite;
}

/* 飘带动画增强 */
@keyframes ribbonFloat {

    0%,
    100% {
        transform: rotate(-5deg) translateY(0);
    }

    50% {
        transform: rotate(5deg) translateY(-10px);
    }
}

.ribbon {
    animation: ribbonFloat 3s ease-in-out infinite;
}

.ribbon:nth-child(2n) {
    animation-duration: 4s;
}

.ribbon:nth-child(3n) {
    animation-duration: 5s;
}

/* 月亮动画 */
@keyframes moonGlow {

    0%,
    100% {
        filter: brightness(1) blur(0px);
        transform: scale(1);
    }

    50% {
        filter: brightness(1.2) blur(2px);
        transform: scale(1.05);
    }
}

/* 导航链接悬停动画 */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--lantern-gold);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}