/* ============================================
   Wdraw 5.6 官网样式
   ============================================ */

/* ============================================
   CSS 变量
   ============================================ */
:root {
    /* 颜色 */
    --color-background: #000000;
    --color-foreground: #ffffff;
    --color-muted: #a1a1a1;
    --color-muted-dark: #7a7a7a;
    --color-border: #333333;
    --color-accent: #ff0000;
    --color-card-bg: #0a0a0a;
    --color-card-bg-hover: #111111;
    
    /* 字体 */
    --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Inter', sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(255, 0, 0, 0.3);
}

/* ============================================
   全局重置
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar {
    display: none;
}

body {
    font-family: var(--font-sans);
    background-color: #000;
    color: var(--color-foreground);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background: linear-gradient(rgba(0, 0, 0, .85), rgba(0, 0, 0, .92)),
        url('../image/Main-BG.webp') center / cover no-repeat;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   容器
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-background);
    color: var(--color-foreground);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-foreground);
    border-color: var(--color-foreground);
}

.btn-secondary:hover {
    background-color: var(--color-foreground);
    color: var(--color-background);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.125rem;
}

/* ============================================
   导航栏
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal);
}

.header.scrolled {
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav {
    height: 72px;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-foreground);
}

.logo-text {
    background: linear-gradient(121deg, var(--color-accent), #fff 55%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-muted);
    font-size: 0.875rem;
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--color-foreground);
}

.nav-link:hover::after {
    width: 100%;
}

.lang-toggle {
    padding: 4px 12px;
    font-size: .75rem;
    font-weight: 600;
    color: var(--color-muted);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-toggle:hover {
    color: var(--color-foreground);
    border-color: var(--color-foreground);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--color-foreground);
    transition: all var(--transition-normal);
}

/* ============================================
   Hero 区块
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at center, rgba(255, 0, 0, 0.05) 0%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 0, 0, 0.2) 0%, rgba(255, 0, 0, 0.05) 40%, transparent 70%);
    animation: pulseGlow 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulseGlow {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.hero-content {
    text-align: center;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.version-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 0, 0, 0.1);
    border: 1px solid var(--color-accent);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    animation: fadeIn 0.6s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1rem;
    animation: fadeIn 1s ease-out 0.2s both;
}

.hero-title-main {
    background: linear-gradient(121deg, var(--color-accent), #fff 55%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-muted);
    margin-bottom: 1rem;
    animation: fadeIn 0.8s ease-out 0.4s both;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-muted);
    margin-bottom: 2rem;
    animation: fadeIn 0.6s ease-out 0.6s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeIn 0.5s ease-out 0.8s both;
}

/* ============================================
   区块通用样式
   ============================================ */
.section {
    padding: var(--spacing-xl) 0;
}

.section-dark {
    background-color: #0a0a0a;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-muted);
}

/* ============================================
   作品展示
   ============================================ */
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.showcase-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.showcase-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.showcase-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

.showcase-card:hover .showcase-image img {
    transform: scale(1.05);
}

.showcase-content {
    padding: 1.5rem;
}

.showcase-style {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: rgba(255, 0, 0, 0.1);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.showcase-prompt {
    font-size: 0.875rem;
    color: var(--color-muted);
    line-height: 1.5;
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   功能特性
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
    color: var(--color-foreground);
    transition: transform 0.8s ease;
}

.feature-card:hover .feature-icon {
    transform: rotate(360deg);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.feature-description {
    font-size: 0.875rem;
    color: var(--color-muted);
    line-height: 1.6;
}

/* ============================================
   在线体验
   ============================================ */
.try-online-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 4rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.try-online-content {
    max-width: 700px;
    margin: 0 auto;
}

.try-online-note {
    font-size: 0.875rem;
    color: var(--color-muted-dark);
    margin-bottom: 2rem;
}

.try-online-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   API 文档
   ============================================ */
.api-docs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.api-doc-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
}

.api-doc-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.api-doc-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
    color: var(--color-foreground);
}

.api-doc-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.api-doc-description {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.api-doc-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent);
    font-weight: 500;
    transition: gap var(--transition-fast);
}

.api-doc-card:hover .api-doc-link {
    gap: 0.75rem;
}

/* ============================================
   团队
   ============================================ */
.team-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.team-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: linear-gradient(121deg, var(--color-accent), #fff 55%);
    border-radius: 50%;
    margin-bottom: 2rem;
}

.team-logo-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-background);
}

.team-description {
    font-size: 1.125rem;
    color: var(--color-muted);
    margin-bottom: 2rem;
}

.team-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.team-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-muted);
    transition: color var(--transition-fast);
}

.team-link:hover {
    color: var(--color-accent);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background-color: #0a0a0a;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    text-align: left;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-slogan {
    font-size: 0.875rem;
    color: var(--color-muted);
}

.footer-title {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.footer-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-list a {
    color: var(--color-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-list a:hover {
    color: var(--color-accent);
}

.footer-list svg {
    flex-shrink: 0;
    color: var(--color-muted-dark);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-muted-dark);
}

/* ============================================
   动画
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(60px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideLeft {
    from {
        transform: translateX(-60px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideRight {
    from {
        transform: translateX(60px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* 滚动触发动画类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(60px);
    transition: all 0.8s cubic-bezier(0.165, 0.840, 0.440, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .api-docs-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .try-online-card {
        padding: 2rem;
    }
    
    .try-online-cta {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .team-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
}

/* ============================================
   辅助功能
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 焦点样式 */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}