/* 全局样式 */
:root {
    --primary-color: #4dabf7;
    --secondary-color: #64ffda;
    --accent-color: #ff6b6b;
    --star-color: #ffffff;
    --deep-space: #0a0a23;
    --space-blue: #1a1a3a;
    --nebula-purple: #2d1b69;
    --cosmic-gold: #ffd700;
    --cosmic-silver: #c0c0c0;
    --glow-blue: rgba(77, 171, 247, 0.8);
    --glow-purple: rgba(138, 43, 226, 0.6);
    --glow-gold: rgba(255, 215, 0, 0.7);
}

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

body {
    height: 100vh;
    overflow: hidden;
    background: radial-gradient(ellipse at center, var(--space-blue) 0%, var(--deep-space) 70%);
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    color: var(--star-color);
    cursor: grab;
}

body:active {
    cursor: grabbing;
}

/* 星空背景 */
.starfield {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: 
        radial-gradient(2px 2px at 20px 30px, #eee, transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.8), transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 160px 30px, #ddd, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 4s ease-in-out infinite alternate;
}

@keyframes twinkle {
    0% { opacity: 0.3; }
    100% { opacity: 1; }
}

/* 可交互星系 */
.interactive-stars {
    position: relative;
    width: 100%;
    height: 100vh;
    z-index: 2;
}

/* 星系系统 */
.star-system {
    position: absolute;
    transition: all 0.3s ease;
    cursor: pointer;
}

/* 星系位置 */
.blog-star { top: 15%; left: 20%; }
.project-star { top: 25%; left: 70%; }
.video-star { top: 45%; left: 15%; }
.team-star { top: 60%; left: 75%; }
.social-star { top: 75%; left: 30%; }
.ai-star { top: 35%; left: 85%; }
.docs-star { top: 80%; left: 65%; }
.github-star { top: 10%; left: 50%; }

/* 主星球 */
.main-star {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.8), rgba(100,255,218,0.3));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 3;
    border: 2px solid rgba(255,255,255,0.3);
    box-shadow: 
        0 0 20px var(--glow-blue),
        inset 0 0 20px rgba(255,255,255,0.1);
    animation: pulse-glow 3s ease-in-out infinite;
}

.main-star i {
    font-size: 24px;
    color: var(--star-color);
    z-index: 4;
    text-shadow: 0 0 10px currentColor;
}

/* 星球发光效果 */
.star-glow {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 1;
    animation: glow-pulse 2s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
    0%, 100% { 
        transform: scale(1);
        box-shadow: 0 0 20px var(--glow-blue);
    }
    50% { 
        transform: scale(1.1);
        box-shadow: 0 0 30px var(--glow-blue), 0 0 40px rgba(77,171,247,0.4);
    }
}

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

/* 轨道系统 */
.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 120px;
    height: 120px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: rotate 20s linear infinite;
}

.satellite {
    position: absolute;
    width: 8px;
    height: 8px;
    background: radial-gradient(circle, var(--secondary-color), transparent);
    border-radius: 50%;
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 10px var(--secondary-color);
    animation: satellite-glow 1.5s ease-in-out infinite alternate;
}

.satellite-2 {
    animation-delay: 0.5s;
    transform: translateX(-50%) rotate(120deg);
    transform-origin: 50% 64px;
}

.satellite-3 {
    animation-delay: 1s;
    transform: translateX(-50%) rotate(240deg);
    transform-origin: 50% 64px;
}

@keyframes rotate {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes satellite-glow {
    0% { box-shadow: 0 0 5px var(--secondary-color); }
    100% { box-shadow: 0 0 15px var(--secondary-color), 0 0 25px rgba(100,255,218,0.3); }
}

/* 星球标签 */
.star-label {
    position: absolute;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
    text-align: center;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
    text-shadow: 0 0 10px rgba(255,255,255,0.5);
}

/* 悬停效果 */
.star-system:hover {
    transform: scale(1.2);
}

.star-system:hover .star-label {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

.star-system:hover .main-star {
    animation-duration: 1s;
    box-shadow: 
        0 0 40px var(--glow-blue),
        0 0 60px rgba(77,171,247,0.4),
        inset 0 0 20px rgba(255,255,255,0.2);
}

/* 特定星球颜色 */
.blog-star .main-star { background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.8), rgba(255,107,107,0.3)); }
.blog-star .star-glow { background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%); }
.blog-star:hover .main-star { box-shadow: 0 0 40px var(--accent-color); }

.project-star .main-star { background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.8), rgba(255,215,0,0.3)); }
.project-star .star-glow { background: radial-gradient(circle, var(--cosmic-gold) 0%, transparent 70%); }
.project-star:hover .main-star { box-shadow: 0 0 40px var(--cosmic-gold); }

.ai-star .main-star { background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.8), rgba(138,43,226,0.3)); }
.ai-star .star-glow { background: radial-gradient(circle, var(--glow-purple) 0%, transparent 70%); }
.ai-star:hover .main-star { box-shadow: 0 0 40px var(--glow-purple); }

/* 星系连接线画布 */
#constellation-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* 信息面板 */
.info-panel {
    position: fixed;
    top: 50%;
    right: -400px;
    transform: translateY(-50%);
    width: 350px;
    background: rgba(26, 26, 58, 0.95);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: right 0.4s ease;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.info-panel.active {
    right: 20px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.panel-header h3 {
    color: var(--secondary-color);
    font-size: 18px;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-btn:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
}

.panel-content {
    padding: 20px;
    line-height: 1.6;
    color: rgba(255,255,255,0.9);
}

.panel-content h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-size: 16px;
}

.panel-content p {
    margin-bottom: 15px;
    font-size: 14px;
}

.panel-content .links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.panel-content .link-btn {
    padding: 8px 16px;
    background: rgba(77,171,247,0.2);
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 12px;
    transition: all 0.3s ease;
}

.panel-content .link-btn:hover {
    background: var(--primary-color);
    color: var(--deep-space);
    transform: translateY(-2px);
}

/* 空间控制 */
.space-controls {
    position: fixed;
    bottom: 30px;
    left: 30px;
    display: flex;
    gap: 15px;
    z-index: 1000;
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(26, 26, 58, 0.8);
    border: 1px solid rgba(255,255,255,0.3);
    color: var(--star-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: rgba(77,171,247,0.3);
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(77,171,247,0.3);
}

.control-btn i {
    font-size: 18px;
}

/* 星空标题 */
.space-title {
    position: fixed;
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 1000;
    opacity: 0.9;
}

.space-title h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    text-shadow: 0 0 30px rgba(77,171,247,0.5);
    animation: title-glow 3s ease-in-out infinite alternate;
}

.space-title p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    font-weight: 300;
}

@keyframes title-glow {
    0% { 
        filter: drop-shadow(0 0 10px rgba(77,171,247,0.5));
    }
    100% { 
        filter: drop-shadow(0 0 20px rgba(77,171,247,0.8));
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .space-title h1 {
        font-size: 2rem;
    }
    
    .space-title p {
        font-size: 0.9rem;
    }
    
    .info-panel {
        width: 280px;
    }
    
    .main-star {
        width: 50px;
        height: 50px;
    }
    
    .main-star i {
        font-size: 20px;
    }
    
    .orbit {
        width: 100px;
        height: 100px;
    }
    
    .space-controls {
        bottom: 20px;
        left: 20px;
    }
    
    .control-btn {
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .space-title {
        top: 30px;
    }
    
    .space-title h1 {
        font-size: 1.5rem;
    }
    
    .info-panel {
        width: calc(100vw - 40px);
        right: -100vw;
    }
    
    .info-panel.active {
        right: 20px;
    }
}

/* 特殊效果 */
.cosmic-dust {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(1px 1px at 50px 100px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 150px 200px, rgba(100,255,218,0.1), transparent),
        radial-gradient(1px 1px at 300px 50px, rgba(255,107,107,0.1), transparent);
    background-size: 400px 300px;
    animation: float-dust 30s linear infinite;
    pointer-events: none;
}

@keyframes float-dust {
    0% { transform: translateX(0); }
    100% { transform: translateX(-400px); }
}

/* 流星效果 */
.shooting-star {
    position: absolute;
    width: 2px;
    height: 100px;
    background: linear-gradient(to bottom, transparent, var(--star-color), transparent);
    animation: shooting 3s linear infinite;
    opacity: 0;
}

@keyframes shooting {
    0% {
        opacity: 0;
        transform: translateX(-100px) translateY(-100px) rotate(45deg);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(100vw) translateY(100vh) rotate(45deg);
    }
}

/* 新增：星云效果 */
.nebula-effect {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(138,43,226,0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: nebula-float 20s linear infinite;
    pointer-events: none;
}

@keyframes nebula-float {
    0% { transform: rotate(0deg) translate(50px) rotate(0deg); }
    100% { transform: rotate(360deg) translate(50px) rotate(-360deg); }
}