/* 星际安保官计划 - 宣传海报样式 */

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

body {
    font-family: 'Arial', 'Microsoft YaHei', sans-serif, 'Orbitron', monospace;
    background: #000011;
    min-height: 100vh;
    color: #ffffff;
    position: relative;
    overflow-x: hidden;
}

/* 星际背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at top, #1e3c72 0%, #000011 50%),
        radial-gradient(ellipse at bottom, #2a5298 0%, #000011 50%);
    z-index: -3;
}

/* 星星效果 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(2px 2px at 20px 30px, #fff, transparent),
        radial-gradient(2px 2px at 40px 70px, #fff, transparent),
        radial-gradient(1px 1px at 90px 40px, #fff, transparent),
        radial-gradient(1px 1px at 130px 80px, #fff, transparent),
        radial-gradient(2px 2px at 160px 30px, #fff, transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: twinkle 8s linear infinite;
    z-index: -2;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* 动态粒子背景 */
.space-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: float 25s linear infinite;
}

@keyframes float {
    0% {
        transform: translateY(100vh) translateX(0px);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(100px);
        opacity: 0;
    }
}

/* 海报容器 */
.poster-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
}

/* 头部标题区域 */
.poster-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.title-glow {
    position: relative;
    z-index: 2;
}

.main-title {
    font-size: 4rem;
    font-weight: bold;
    background: linear-gradient(45deg, #00bfff, #00d4ff, #0099cc);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: titleGlow 3s ease-in-out infinite;
    text-shadow: 0 0 30px rgba(0, 191, 255, 0.8);
    margin-bottom: 20px;
}

.subtitle {
    font-size: 1.8rem;
    color: #e2e8f0;
    text-shadow: 0 0 15px rgba(226, 232, 240, 0.6);
    font-weight: 300;
}

@keyframes titleGlow {
    0%, 100% {
        background-position: 0% 50%;
        filter: brightness(1);
    }
    50% {
        background-position: 100% 50%;
        filter: brightness(1.2);
    }
}

.header-decoration {
    margin-top: 30px;
    font-size: 2rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* 主要内容区域 */
.poster-main {
    margin-bottom: 60px;
}

/* 功能特性网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.feature-card {
    background: rgba(0, 20, 40, 0.85);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 191, 255, 0.3);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 191, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.feature-card:hover::before {
    left: 100%;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 
        0 20px 40px rgba(0, 191, 255, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border-color: #00bfff;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.feature-card h3 {
    color: #00bfff;
    font-size: 1.5rem;
    margin-bottom: 15px;
    text-shadow: 0 0 10px rgba(0, 191, 255, 0.5);
}

.feature-card p {
    color: #e2e8f0;
    line-height: 1.6;
    font-size: 1.1rem;
}

/* 亮点展示区域 */
.highlight-section {
    margin-bottom: 50px;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(0, 30, 60, 0.9), rgba(0, 50, 100, 0.9));
    backdrop-filter: blur(20px);
    border: 2px solid rgba(0, 191, 255, 0.4);
    border-radius: 25px;
    padding: 50px 40px;
    position: relative;
    overflow: hidden;
}

.highlight-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 191, 255, 0.1), transparent);
    animation: rotate 10s linear infinite;
    z-index: -1;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.highlight-box h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #00d4ff;
    margin-bottom: 40px;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.7);
}

.highlight-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.2rem;
    color: #ffffff;
    padding: 15px 20px;
    background: rgba(0, 40, 80, 0.6);
    border-radius: 15px;
    border: 1px solid rgba(0, 191, 255, 0.2);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    background: rgba(0, 60, 120, 0.8);
    border-color: #00bfff;
    transform: translateX(10px);
}

.highlight-icon {
    font-size: 1.5rem;
    animation: rotate 3s ease-in-out infinite;
}

/* 底部区域 */
.poster-footer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.tech-stack, .contact-info {
    background: rgba(0, 20, 40, 0.8);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(0, 191, 255, 0.3);
    border-radius: 20px;
    padding: 30px;
}

.tech-stack h3, .contact-info h3 {
    color: #00bfff;
    font-size: 1.4rem;
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(0, 191, 255, 0.5);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tech-tag {
    background: linear-gradient(135deg, #0066cc, #00bfff);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(0, 191, 255, 0.3);
    transition: all 0.3s ease;
}

.tech-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 191, 255, 0.5);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #e2e8f0;
    font-size: 1.1rem;
}

.contact-icon {
    font-size: 1.3rem;
}

/* 装饰轨道元素 */
.decoration-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.orbit {
    position: absolute;
    border: 1px solid rgba(0, 191, 255, 0.2);
    border-radius: 50%;
    animation: orbitalRotation 20s linear infinite;
}

.orbit-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    right: 10%;
    animation-duration: 15s;
}

.orbit-2 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 5%;
    animation-duration: 25s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 100px;
    height: 100px;
    top: 50%;
    right: 20%;
    animation-duration: 10s;
}

@keyframes orbitalRotation {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .poster-container {
        padding: 20px 15px;
    }
    
    .main-title {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.4rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .highlight-box {
        padding: 30px 20px;
    }
    
    .highlight-box h2 {
        font-size: 2rem;
    }
    
    .highlight-features {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .poster-footer {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .orbit-1, .orbit-2, .orbit-3 {
        display: none;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .highlight-item {
        font-size: 1rem;
        padding: 12px 15px;
    }
    
    .tech-tags {
        justify-content: center;
    }
}