/* 永恒世界 - 全新科技风格样式 */
/* 侧边栏布局 + 卡片式设计 */

:root {
    --primary-color: #00D9FF;
    --primary-dark: #0099CC;
    --primary-light: #00FFFF;
    --secondary-color: #0066FF;
    --accent-color: #00FF88;
    --bg-dark: #000000;
    --bg-darker: #0A0A0A;
    --bg-card: rgba(10, 10, 10, 0.9);
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #707070;
    --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #0066FF 100%);
    --gradient-neon: linear-gradient(135deg, #00FFFF 0%, #0066FF 50%, #00FF88 100%);
    --border-glow: 1px solid rgba(0, 217, 255, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.4);
    --shadow-glow-strong: 0 0 40px rgba(0, 217, 255, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 网格背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 217, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: rgba(0, 0, 0, 0.95);
    border-right: var(--border-glow);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(20px);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: var(--border-glow);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 2rem 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
    position: relative;
}

.nav-item:hover,
.nav-item.active {
    color: var(--primary-light);
    background: rgba(0, 217, 255, 0.1);
    border-left-color: var(--primary-light);
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.nav-text {
    font-weight: 500;
    letter-spacing: 0.5px;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: var(--border-glow);
}

.btn-download-sidebar {
    display: block;
    width: 100%;
    padding: 0.8rem;
    background: transparent;
    border: var(--border-glow);
    color: var(--primary-light);
    text-align: center;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-glow);
}

.btn-download-sidebar:hover {
    background: rgba(0, 217, 255, 0.1);
    box-shadow: var(--shadow-glow-strong);
    transform: translateY(-2px);
}

/* 主内容区 */
.main-content {
    margin-left: 280px;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 首页横幅 */
.hero-banner {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 217, 255, 0.1) 100%);
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/1.webp') center/cover;
    opacity: 0.2;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 2rem;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(0, 217, 255, 0.2);
    border: var(--border-glow);
    border-radius: 20px;
    color: var(--primary-light);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-glow);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn-hero-primary,
.btn-hero-secondary {
    padding: 1rem 2.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.btn-hero-primary {
    background: transparent;
    border: var(--border-glow);
    color: var(--primary-light);
    box-shadow: var(--shadow-glow);
}

.btn-hero-primary:hover {
    background: rgba(0, 217, 255, 0.1);
    box-shadow: var(--shadow-glow-strong);
    transform: translateY(-3px);
}

.btn-hero-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
}

.btn-hero-secondary:hover {
    color: var(--primary-light);
    border-color: var(--primary-light);
}

.hero-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.stat-box {
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 4px;
    text-align: center;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow-strong);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.8);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 通用区块 */
section {
    padding: 5rem 0;
    position: relative;
}

.section-heading {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--gradient-primary);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.8);
}

/* 游戏特色标签页 */
.features-showcase {
    background: var(--bg-darker);
    border-top: var(--border-glow);
    border-bottom: var(--border-glow);
}

.features-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 1rem 2rem;
    background: var(--bg-card);
    border: var(--border-glow);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--primary-light);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-glow);
    background: rgba(0, 217, 255, 0.1);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.feature-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.feature-image img {
    width: 100%;
    border-radius: 4px;
    border: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.feature-image img:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow-strong);
}

.feature-text h3 {
    font-size: 2rem;
    color: var(--primary-light);
    margin-bottom: 1.5rem;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.feature-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 0.8rem 0;
    padding-left: 2rem;
    color: var(--text-secondary);
    position: relative;
}

.feature-list li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--primary-light);
    text-shadow: 0 0 5px rgba(0, 217, 255, 0.8);
}

/* 虚拟世界网格 */
.worlds-section {
    background: var(--bg-dark);
}

.worlds-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.world-card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    border: var(--border-glow);
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
    height: 300px;
}

.world-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow-strong);
}

.world-image {
    width: 100%;
    height: 100%;
    position: relative;
}

.world-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.world-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    padding: 2rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.world-card:hover .world-overlay {
    transform: translateY(0);
}

.world-overlay h3 {
    font-size: 1.5rem;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.8);
}

.world-overlay p {
    color: var(--text-secondary);
}

/* 角色档案 */
.characters-section {
    background: var(--bg-darker);
    border-top: var(--border-glow);
    border-bottom: var(--border-glow);
}

.characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.character-card {
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 4px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-glow);
}

.character-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow-strong);
}

.character-avatar {
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    border: 3px solid var(--primary-light);
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

.character-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.character-info h3 {
    font-size: 1.5rem;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
}

.character-role {
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.character-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 攻略手风琴 */
.guides-section {
    background: var(--bg-dark);
}

.guides-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 4px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.accordion-header {
    padding: 1.5rem 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.accordion-header:hover {
    background: rgba(0, 217, 255, 0.1);
}

.accordion-header h3 {
    font-size: 1.3rem;
    color: var(--primary-light);
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.accordion-icon {
    font-size: 1.5rem;
    color: var(--primary-light);
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
}

.guide-content {
    padding: 0 2rem 2rem;
}

.guide-content h4 {
    color: var(--primary-light);
    margin: 1.5rem 0 0.5rem;
    font-size: 1.1rem;
}

.guide-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* 更新日志时间线 */
.updates-section {
    background: var(--bg-darker);
    border-top: var(--border-glow);
    border-bottom: var(--border-glow);
}

.updates-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 3rem;
}

.updates-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -3.5rem;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--primary-light);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.8);
    border: 3px solid var(--bg-dark);
}

.timeline-content {
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 4px;
    padding: 2rem;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-glow-strong);
}

.update-version {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.update-date {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.update-details ul {
    list-style: none;
}

.update-details li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.update-details li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--primary-light);
    text-shadow: 0 0 5px rgba(0, 217, 255, 0.8);
}

/* 用户评价 */
.reviews-section {
    background: var(--bg-dark);
}

.reviews-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.review-item {
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 4px;
    padding: 2rem;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.review-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow-strong);
}

.review-stars {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

.review-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.review-author {
    color: var(--text-muted);
    text-align: right;
    font-size: 0.9rem;
}

/* 下载区域 */
.download-section {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.2) 0%, rgba(0, 217, 255, 0.2) 100%);
    border-top: var(--border-glow);
    border-bottom: var(--border-glow);
}

.download-box {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 4px;
    box-shadow: var(--shadow-glow);
}

.download-box h2 {
    font-size: 2.5rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
    text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
}

.download-box p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.download-item {
    text-align: center;
}

.download-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.download-size {
    display: block;
    color: var(--primary-light);
    font-size: 1.5rem;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.8);
}

.btn-download-main {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: transparent;
    border: var(--border-glow);
    color: var(--primary-light);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 700;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: var(--shadow-glow);
    transition: all 0.3s ease;
}

.btn-download-main:hover {
    background: rgba(0, 217, 255, 0.1);
    box-shadow: var(--shadow-glow-strong);
    transform: translateY(-3px);
}

/* 页脚 */
.footer {
    background: var(--bg-darker);
    border-top: var(--border-glow);
    padding: 3rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-column h4 {
    color: var(--primary-light);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.8rem;
    color: var(--text-secondary);
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-column a:hover {
    color: var(--primary-light);
    text-shadow: 0 0 5px rgba(0, 217, 255, 0.8);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 217, 255, 0.2);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--primary-light);
    text-decoration: none;
    text-shadow: 0 0 5px rgba(0, 217, 255, 0.5);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    width: 50px;
    height: 50px;
    background: rgba(0, 0, 0, 0.8);
    border: var(--border-glow);
    border-radius: 4px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    box-shadow: var(--shadow-glow);
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--primary-light);
    border-radius: 2px;
    transition: all 0.3s ease;
    box-shadow: 0 0 5px rgba(0, 217, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .feature-detail {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-heading {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .features-tabs {
        flex-direction: column;
    }

    .worlds-grid {
        grid-template-columns: 1fr;
    }

    .characters-grid {
        grid-template-columns: 1fr;
    }

    .reviews-slider {
        grid-template-columns: 1fr;
    }

    .download-info {
        flex-direction: column;
        gap: 1.5rem;
    }

    section {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .section-heading {
        font-size: 2rem;
    }

    .container {
        padding: 0 1rem;
    }
}