/* Header 导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    z-index: var(--z-fixed);
    transition: all var(--transition-slow) var(--ease-out);
}

.header.scrolled {
    height: var(--header-height-scrolled);
    background-color: rgba(255, 255, 255, 0.85);
    border-bottom-color: var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    font-size: 28px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-text-primary);
    background-color: var(--color-bg-tertiary);
}

.nav-link.active {
    color: var(--color-brand);
    background-color: var(--color-brand-subtle);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* 搜索框 */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 200px;
    padding: var(--space-2) var(--space-3);
    padding-right: 36px;
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    background-color: var(--color-bg-tertiary);
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-input:focus {
    width: 260px;
    background-color: var(--color-bg-primary);
    border-color: var(--color-brand);
    box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

.search-input::placeholder {
    color: var(--color-text-tertiary);
}

.search-btn {
    position: absolute;
    right: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--color-text-tertiary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-btn:hover {
    color: var(--color-brand);
    background-color: var(--color-brand-subtle);
}

/* 主题切换按钮 */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--color-brand);
    background-color: var(--color-brand-subtle);
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    gap: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-slow);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-menu-content {
    padding: var(--space-6);
}

.mobile-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    padding: var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--color-text-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background-color: var(--color-brand-subtle);
    color: var(--color-brand);
}

/* Hero区域 */
.hero {
    position: relative;
    padding-top: calc(var(--header-height) + var(--space-16));
    padding-bottom: var(--space-20);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 500px;
    height: 500px;
    top: -100px;
    right: -100px;
    background: linear-gradient(135deg, var(--color-brand-light), var(--color-lavender-text));
}

.orb-2 {
    width: 400px;
    height: 400px;
    bottom: -50px;
    left: -100px;
    background: linear-gradient(135deg, var(--color-mint-text), var(--color-brand-light));
}

.orb-3 {
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, var(--color-apricot-text), var(--color-rose-text));
    opacity: 0.2;
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero-text {
    max-width: 560px;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-5);
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: linear-gradient(135deg, var(--color-brand), var(--color-brand-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 400px;
}

.hero-card {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6);
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow) var(--ease-spring);
}

.hero-card:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.hero-card .card-icon {
    font-size: 48px;
}

.hero-card .card-text {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
}

.hero-card.card-1 {
    top: 20px;
    left: 20px;
    animation: float 6s ease-in-out infinite;
}

.hero-card.card-2 {
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    animation: float 6s ease-in-out infinite 2s;
}

.hero-card.card-3 {
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    animation: float 6s ease-in-out infinite 4s;
}

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

.hero-card.card-2 {
    animation: float2 6s ease-in-out infinite 2s;
}

@keyframes float2 {
    0%, 100% {
        transform: translateY(-50%);
    }
    50% {
        transform: translateY(calc(-50% - 15px));
    }
}

.hero-card.card-3 {
    animation: float3 6s ease-in-out infinite 4s;
}

@keyframes float3 {
    0%, 100% {
        transform: translateX(-50%);
    }
    50% {
        transform: translateX(-50%) translateY(-15px);
    }
}

/* 分类导航 */
.category-nav {
    position: sticky;
    top: var(--header-height);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-light);
    z-index: var(--z-sticky);
    padding: var(--space-4) 0;
}

.category-scroll {
    display: flex;
    gap: var(--space-3);
    overflow-x: auto;
    padding-bottom: var(--space-2);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-scroll::-webkit-scrollbar {
    display: none;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.category-btn:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-text-quaternary);
}

.category-btn.active {
    color: white;
    background-color: var(--color-brand);
    border-color: var(--color-brand);
    box-shadow: var(--shadow-md);
}

.category-icon {
    font-size: 18px;
}

/* 游戏区块 */
.games-section {
    padding: var(--space-12) 0;
}

.sort-select {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sort-select:focus {
    border-color: var(--color-brand);
    box-shadow: 0 0 0 3px var(--color-brand-subtle);
}

/* 游戏网格 */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-8);
}

/* 游戏卡片 */
.game-card {
    position: relative;
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-slow) var(--ease-out);
    cursor: pointer;
    border: 1px solid var(--color-border-light);
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-brand-subtle);
}

.game-card:active {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.game-card:hover .game-cover img {
    transform: scale(1.05);
}

.game-cover {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-border-light));
}

.game-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.game-cover-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 64px;
    background: linear-gradient(135deg, var(--color-brand-subtle), var(--color-lavender));
    transition: background var(--transition-slow);
}

.game-card:hover .game-cover-placeholder {
    background: linear-gradient(135deg, var(--color-brand), var(--color-lavender-text));
}

.game-badge-new {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
}

.game-favorite-btn {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-full);
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
    opacity: 0;
    transform: scale(0.8);
}

.game-card:hover .game-favorite-btn {
    opacity: 1;
    transform: scale(1);
}

.game-favorite-btn:hover {
    background-color: white;
    color: var(--color-rose-text);
    transform: scale(1.1);
}

.game-favorite-btn.active {
    opacity: 1;
    transform: scale(1);
    color: var(--color-rose-text);
}

.game-info {
    padding: var(--space-4);
}

.game-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: var(--leading-snug);
}

.game-desc {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-3);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.game-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.game-tags {
    display: flex;
    gap: var(--space-1);
}

.game-actions {
    display: flex;
    gap: var(--space-2);
    padding: 0 var(--space-4) var(--space-4);
}

.game-actions .btn {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
}

/* 加载更多 */
.load-more {
    display: flex;
    justify-content: center;
    margin-top: var(--space-10);
}

/* 最新游戏区块 */
.new-games-section {
    padding: var(--space-12) 0;
    background-color: var(--color-bg-tertiary);
}

.new-games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-8);
}

/* 关于我预览 */
.about-preview {
    padding: var(--space-16) 0;
}

.about-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-8);
    background: linear-gradient(135deg, var(--color-brand-subtle), var(--color-lavender));
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.about-content {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.about-avatar {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    background-color: var(--color-bg-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.about-text h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.about-text p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    max-width: 400px;
}

/* 页脚 */
.footer {
    padding: var(--space-12) 0 var(--space-6);
    background-color: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-12);
    margin-bottom: var(--space-10);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.footer-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    max-width: 280px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.footer-group h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.footer-group ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-group a {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-group a:hover {
    color: var(--color-brand);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.footer-developer {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

/* 折叠/展开功能 */
.collapsible-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) ease-out;
}

.collapsible-content.expanded {
    max-height: 500px;
}

.collapsible-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-3);
    padding: var(--space-2) var(--space-3);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.collapsible-toggle:hover {
    background-color: var(--color-brand-subtle);
    color: var(--color-brand);
    border-color: var(--color-brand);
}

.collapsible-toggle.expanded svg {
    transform: rotate(180deg);
}

/* 游戏技巧 */
.game-tips {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border-light);
}

.game-tips h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.game-tips ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    list-style: disc;
    list-style-position: inside;
}

/* 游戏截图 */
.game-screenshots {
    margin-top: var(--space-3);
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2);
}

.screenshot-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
}

.screenshot-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    background: linear-gradient(135deg, var(--color-brand-subtle), var(--color-lavender));
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.screenshot-item:hover .screenshot-placeholder {
    background: linear-gradient(135deg, var(--color-brand), var(--color-lavender-text));
    transform: scale(1.02);
}

.screenshot-caption {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-align: center;
}

/* 游戏说明列表 */
.game-instructions ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    list-style: disc;
    list-style-position: inside;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}