/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 添加星星闪烁动画 */
@keyframes twinkle {
  0% { opacity: 0.1; }
  50% { opacity: 1; }
  100% { opacity: 0.1; }
}

@keyframes twinkle-alt {
  0% { opacity: 0.8; }
  40% { opacity: 0.05; }
  80% { opacity: 0.8; }
  100% { opacity: 0.8; }
}

/* 添加星星移动动画 */
@keyframes float-right {
  0% { transform: translateX(0) translateY(0); }
  50% { transform: translateX(30px) translateY(15px); }
  100% { transform: translateX(0) translateY(0); }
}

@keyframes float-left {
  0% { transform: translateX(0) translateY(0); }
  50% { transform: translateX(-30px) translateY(-15px); }
  100% { transform: translateX(0) translateY(0); }
}

@keyframes float-up {
  0% { transform: translateY(0); }
  50% { transform: translateY(-25px); }
  100% { transform: translateY(0); }
}

@keyframes float-down {
  0% { transform: translateY(0); }
  50% { transform: translateY(25px); }
  100% { transform: translateY(0); }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", sans-serif;
    background-color: #000000;
    background-image: url('主页背景.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #ffffff;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* 主容器 */
.main-container {
    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.3);
}

/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    position: relative;
    z-index: 10;
}

.left-nav {
    display: flex;
    align-items: center;
}

.logo a {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #ffffff;
    margin-right: 30px;
}

.nav-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    margin-bottom: 4px;
}

.logo-subtitle {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.8);
}

.nav-characters {
    display: flex;
    gap: 20px;
}

.nav-item {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 16px;
    transition: color 0.2s, transform 0.2s;
}

.nav-item:hover {
    color: #ffffff;
    transform: translateY(-2px);
}

.try-button {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    padding: 10px 24px;
    text-decoration: none;
    transition: background-color 0.2s;
}

.try-button:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* 英雄区域 */
.hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 5;
}

.hero-content {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-top: -50px;
}

.hero-text {
    font-size: 280px;
    font-weight: 700;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.5));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 5px;
    margin-top: 60px;
    letter-spacing: -2px;
    line-height: 1;
}

/* 搜索框 */
.input-container {
    width: 100%;
    margin-bottom: 100px;
    margin-top: 60px;
}

.chat-link {
    text-decoration: none;
    color: #ffffff;
    width: 100%;
    display: block;
}

.search-box {
    background-color: rgba(30, 30, 30, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: border-color 0.3s, box-shadow 0.3s;
    backdrop-filter: blur(5px);
}

.search-box:hover {
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.prompt-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    text-align: left;
}

.arrow-button {
    background-color: rgba(255, 255, 255, 0.15);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.search-box:hover .arrow-button {
    background-color: rgba(255, 255, 255, 0.3);
}

/* 页脚信息 */
.footer-info {
    max-width: 700px;
    margin: 0 auto;
    margin-top: 20px;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 30px;
}

.footer-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.footer-btn {
    padding: 10px 20px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

.primary-btn {
    background-color: #ffffff;
    color: #000000;
}

.primary-btn:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

.outline-btn {
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #ffffff;
}

.outline-btn:hover {
    border-color: #ffffff;
    background-color: rgba(255, 255, 255, 0.1);
}

.text-btn {
    color: rgba(255, 255, 255, 0.8);
}

.text-btn:hover {
    color: #ffffff;
}

/* 背景效果 */
.background-gradient {
    position: absolute;
    width: 40vw;
    height: 70vh;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 1;
    opacity: 0.25;
}

.left {
    background: radial-gradient(circle, rgba(255, 0, 0, 0.2), transparent 70%);
    top: 70%;
    left: 0;
    transform: translateY(-50%);
}

.right {
    background: radial-gradient(circle, rgba(255, 165, 0, 0.2), transparent 70%);
    top: 40%;
    right: 0;
    transform: translateY(-50%);
}

.stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent),
                      radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent),
                      radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent),
                      radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent),
                      radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent),
                      radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent),
                      radial-gradient(2px 2px at calc(random() * 100vw) calc(random() * 100vh), rgba(255, 255, 255, 0.5), transparent);
    z-index: 0;
    opacity: 1;
}

/* 添加闪烁的小星星 */
.twinkling-stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.twinkling-stars::before,
.twinkling-stars::after,
.twinkling-stars .star-group-1,
.twinkling-stars .star-group-2,
.twinkling-stars .star-group-3,
.twinkling-stars .star-group-4 {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.twinkling-stars::before {
    background-image: 
        radial-gradient(1px 1px at 25% 15%, white, transparent),
        radial-gradient(1px 1px at 50% 25%, white, transparent),
        radial-gradient(1px 1px at 75% 5%, white, transparent),
        radial-gradient(1px 1px at 20% 50%, white, transparent),
        radial-gradient(1px 1px at 85% 30%, white, transparent),
        radial-gradient(1px 1px at 10% 80%, white, transparent),
        radial-gradient(1px 1px at 65% 70%, white, transparent),
        radial-gradient(1px 1px at 90% 90%, white, transparent),
        radial-gradient(1px 1px at 30% 65%, white, transparent),
        radial-gradient(1px 1px at 60% 95%, white, transparent),
        radial-gradient(1px 1px at 12% 35%, white, transparent),
        radial-gradient(1px 1px at 45% 12%, white, transparent),
        radial-gradient(1px 1px at 82% 25%, white, transparent),
        radial-gradient(1px 1px at 15% 72%, white, transparent),
        radial-gradient(1px 1px at 72% 55%, white, transparent);
    animation: twinkle 4s infinite ease-in-out, float-right 15s infinite ease-in-out;
}

.twinkling-stars::after {
    background-image: 
        radial-gradient(1px 1px at 10% 10%, white, transparent),
        radial-gradient(1px 1px at 35% 40%, white, transparent),
        radial-gradient(1px 1px at 65% 20%, white, transparent),
        radial-gradient(1px 1px at 40% 75%, white, transparent),
        radial-gradient(1px 1px at 95% 45%, white, transparent),
        radial-gradient(1px 1px at 5% 60%, white, transparent),
        radial-gradient(1px 1px at 80% 80%, white, transparent),
        radial-gradient(1px 1px at 15% 85%, white, transparent),
        radial-gradient(1px 1px at 55% 55%, white, transparent),
        radial-gradient(1px 1px at 70% 40%, white, transparent),
        radial-gradient(1px 1px at 28% 22%, white, transparent),
        radial-gradient(1px 1px at 62% 33%, white, transparent),
        radial-gradient(1px 1px at 77% 62%, white, transparent),
        radial-gradient(1px 1px at 32% 92%, white, transparent),
        radial-gradient(1px 1px at 88% 18%, white, transparent);
    animation: twinkle-alt 3.5s infinite ease-in-out 0.5s, float-left 18s infinite ease-in-out;
}

.star-group-1 {
    background-image: 
        radial-gradient(1.2px 1.2px at 18% 25%, white, transparent),
        radial-gradient(1.2px 1.2px at 42% 35%, white, transparent),
        radial-gradient(1.2px 1.2px at 68% 15%, white, transparent),
        radial-gradient(1.2px 1.2px at 87% 62%, white, transparent),
        radial-gradient(1.2px 1.2px at 23% 75%, white, transparent),
        radial-gradient(1.2px 1.2px at 55% 85%, white, transparent),
        radial-gradient(1.2px 1.2px at 72% 48%, white, transparent),
        radial-gradient(1.2px 1.2px at 8% 38%, white, transparent),
        radial-gradient(1.2px 1.2px at 93% 78%, white, transparent),
        radial-gradient(1.2px 1.2px at 37% 67%, white, transparent),
        radial-gradient(1.2px 1.2px at 63% 93%, white, transparent),
        radial-gradient(1.2px 1.2px at 81% 12%, white, transparent);
    animation: twinkle 5s infinite ease-in-out 1s, float-up 20s infinite ease-in-out;
}

.star-group-2 {
    background-image: 
        radial-gradient(0.8px 0.8px at 5% 18%, white, transparent),
        radial-gradient(0.8px 0.8px at 27% 58%, white, transparent),
        radial-gradient(0.8px 0.8px at 48% 7%, white, transparent),
        radial-gradient(0.8px 0.8px at 67% 73%, white, transparent),
        radial-gradient(0.8px 0.8px at 92% 28%, white, transparent),
        radial-gradient(0.8px 0.8px at 13% 43%, white, transparent),
        radial-gradient(0.8px 0.8px at 78% 53%, white, transparent),
        radial-gradient(0.8px 0.8px at 33% 81%, white, transparent),
        radial-gradient(0.8px 0.8px at 58% 32%, white, transparent),
        radial-gradient(0.8px 0.8px at 73% 88%, white, transparent),
        radial-gradient(0.8px 0.8px at 39% 18%, white, transparent),
        radial-gradient(0.8px 0.8px at 83% 42%, white, transparent);
    animation: twinkle-alt 4.5s infinite ease-in-out 1.5s, float-down 17s infinite ease-in-out;
}

.star-group-3 {
    background-image: 
        radial-gradient(0.5px 0.5px at 7% 28%, white, transparent),
        radial-gradient(0.5px 0.5px at 31% 49%, white, transparent),
        radial-gradient(0.5px 0.5px at 53% 19%, white, transparent),
        radial-gradient(0.5px 0.5px at 76% 38%, white, transparent),
        radial-gradient(0.5px 0.5px at 96% 68%, white, transparent),
        radial-gradient(0.5px 0.5px at 42% 78%, white, transparent),
        radial-gradient(0.5px 0.5px at 69% 57%, white, transparent),
        radial-gradient(0.5px 0.5px at 18% 67%, white, transparent),
        radial-gradient(0.5px 0.5px at 88% 8%, white, transparent),
        radial-gradient(0.5px 0.5px at 24% 93%, white, transparent),
        radial-gradient(0.5px 0.5px at 51% 63%, white, transparent),
        radial-gradient(0.5px 0.5px at 84% 27%, white, transparent),
        radial-gradient(0.5px 0.5px at 12% 52%, white, transparent),
        radial-gradient(0.5px 0.5px at 36% 12%, white, transparent),
        radial-gradient(0.5px 0.5px at 61% 84%, white, transparent);
    animation: twinkle 5.5s infinite ease-in-out 2s, float-right 22s infinite ease-in-out;
}

.star-group-4 {
    background-image: 
        radial-gradient(0.7px 0.7px at 21% 32%, white, transparent),
        radial-gradient(0.7px 0.7px at 46% 54%, white, transparent),
        radial-gradient(0.7px 0.7px at 71% 12%, white, transparent),
        radial-gradient(0.7px 0.7px at 92% 48%, white, transparent),
        radial-gradient(0.7px 0.7px at 14% 79%, white, transparent),
        radial-gradient(0.7px 0.7px at 38% 27%, white, transparent),
        radial-gradient(0.7px 0.7px at 66% 65%, white, transparent),
        radial-gradient(0.7px 0.7px at 83% 92%, white, transparent),
        radial-gradient(0.7px 0.7px at 25% 18%, white, transparent),
        radial-gradient(0.7px 0.7px at 54% 89%, white, transparent),
        radial-gradient(0.7px 0.7px at 79% 31%, white, transparent),
        radial-gradient(0.7px 0.7px at 9% 62%, white, transparent),
        radial-gradient(0.7px 0.7px at 42% 45%, white, transparent),
        radial-gradient(0.7px 0.7px at 75% 76%, white, transparent);
    animation: twinkle-alt 4s infinite ease-in-out 2.5s, float-left 19s infinite ease-in-out;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-text {
        font-size: 200px;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 20px;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-text {
        font-size: 150px;
    }
    
    .hero-content {
        padding: 0 20px;
    }
}

@media (max-width: 480px) {
    .hero-text {
        font-size: 100px;
        margin-bottom: 30px;
    }
    
    .search-box {
        padding: 12px 16px;
    }
    
    .footer-info p {
        font-size: 14px;
    }
}