/* 星球系统页面 */
.universe-hero {
    padding: 8rem 2rem 5rem;
    text-align: center;
    position: relative;
}

.page-title {
    font-size: clamp(3rem, 8vw, 5rem);
    margin-bottom: 1.5rem;
    color: var(--cyan);
    animation: title-glow 3s ease-in-out infinite;
}

@keyframes title-glow {
    0%, 100% {
        text-shadow: 0 0 20px var(--cyan), 0 0 40px var(--cyan);
    }
    50% {
        text-shadow: 0 0 30px var(--cyan), 0 0 60px var(--cyan), 0 0 80px var(--cyan);
    }
}

.page-subtitle {
    font-size: 1.4rem;
    color: rgba(255,255,255,0.7);
}

.solar-system {
    padding: 5rem 2rem 8rem;
    position: relative;
}

/* 添加连接线效果 */
.solar-system::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    border: 1px dashed rgba(123, 104, 238, 0.2);
    border-radius: 50%;
    pointer-events: none;
}

.planet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 5rem;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.planet-card {
    text-align: center;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.planet-card:hover {
    transform: translateY(-30px) scale(1.05);
    z-index: 10;
}

.planet-orb {
    width: 220px;
    height: 220px;
    margin: 0 auto 2.5rem;
    position: relative;
    animation: float-3d 5s ease-in-out infinite;
    transform-style: preserve-3d;
}

@keyframes float-3d {
    0%, 100% {
        transform: translateY(0) rotateX(0deg) rotateY(0deg);
    }
    25% {
        transform: translateY(-15px) rotateX(5deg) rotateY(5deg);
    }
    50% {
        transform: translateY(-25px) rotateX(0deg) rotateY(10deg);
    }
    75% {
        transform: translateY(-15px) rotateX(-5deg) rotateY(5deg);
    }
}

.planet-card:nth-child(2) .planet-orb { animation-delay: 1s; }
.planet-card:nth-child(3) .planet-orb { animation-delay: 2s; }
.planet-card:nth-child(4) .planet-orb { animation-delay: 3s; }
.planet-card:nth-child(5) .planet-orb { animation-delay: 1.5s; }
.planet-card:nth-child(6) .planet-orb { animation-delay: 2.5s; }

.orb-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    border-radius: 50%;
    filter: blur(30px);
    opacity: 0.5;
    animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

.cyan-glow {
    background: radial-gradient(circle, var(--cyan), transparent);
}

.pink-glow {
    background: radial-gradient(circle, var(--pink), transparent);
}

.purple-glow {
    background: radial-gradient(circle, var(--cosmic-purple), transparent);
}

.gold-glow {
    background: radial-gradient(circle, var(--gold), transparent);
}

.orb-content {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(123,104,238,0.2), rgba(255,105,180,0.2));
    backdrop-filter: blur(5px);
    border: 2px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s;
}

.planet-card:hover .orb-content {
    transform: scale(1.1) rotate(5deg);
    border-color: rgba(255,255,255,0.4);
}

.planet-icon {
    font-size: 4rem;
    filter: drop-shadow(0 0 10px currentColor);
}

.planet-title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--cyan);
    transition: all 0.3s;
}

.planet-card:hover .planet-title {
    text-shadow: 0 0 20px currentColor;
}

.planet-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.planet-stats {
    font-size: 1rem;
    color: var(--pink);
}

.locked {
    color: var(--gold);
}

.planet-link {
    position: absolute;
    inset: 0;
    z-index: 10;
}

@media (max-width: 768px) {
    .universe-hero {
        padding: 6rem 1.5rem 3rem;
    }

    .solar-system {
        padding: 3rem 1.5rem 5rem;
    }

    .planet-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .planet-orb {
        width: 180px;
        height: 180px;
    }

    .planet-icon {
        font-size: 3rem;
    }
}