/**
 * Aevum 官网 - 科技风格样式（精简版）
 */

/* ==================== 基础变量 ==================== */
:root {
    --primary: #00f0ff;
    --primary-dark: #00a8b3;
    --secondary: #7000ff;
    --accent: #ff00e5;
    --dark: #0a0a0f;
    --darker: #050508;
    --card-bg: rgba(15, 15, 25, 0.9);
    --border: rgba(0, 240, 255, 0.2);
    --text: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.7);
    --gradient-1: linear-gradient(135deg, #00f0ff 0%, #7000ff 50%, #ff00e5 100%);
    --gradient-2: linear-gradient(90deg, #00f0ff, #7000ff);
    --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.2);
}

/* ==================== 重置样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--darker);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==================== 背景效果（静态） ==================== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(112, 0, 255, 0.05) 0%, transparent 50%);
}

/* 网格背景（静态） */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* 装饰光球（静态） */
.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.15;
    pointer-events: none;
    z-index: -1;
}

.glow-orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: 10%;
    left: -10%;
}

.glow-orb-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    bottom: 10%;
    right: -5%;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.navbar-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    position: relative;
    color: var(--text-muted);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-2);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a:hover::before {
    width: 100%;
}

/* ==================== Hero区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 4rem;
    position: relative;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 2rem;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #00ff88;
    border-radius: 50%;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-title .gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: rgba(0, 240, 255, 0.1);
    transform: translateY(-3px);
}

/* ==================== 功能特性区域 ==================== */
.features {
    padding: 6rem 2rem;
    position: relative;
}

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

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-title .gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.feature-desc {
    color: var(--text-muted);
    line-height: 1.7;
}

/* ==================== 下载区域 ==================== */
.downloads {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.03) 50%, transparent 100%);
}

.downloads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.download-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.download-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
}

.download-card.featured::before {
    content: '推荐';
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: var(--gradient-1);
    padding: 0.25rem 3rem;
    font-size: 0.75rem;
    font-weight: 700;
    transform: rotate(45deg);
}

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

.download-card.disabled {
    opacity: 0.7;
    border-color: rgba(255, 0, 0, 0.2);
}

.download-card.disabled .download-icon {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
}

.download-card.disabled .download-version {
    color: #ff6b6b;
}

.download-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-1);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2.5rem;
}

.download-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.download-version {
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.download-desc {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.download-code {
    background: rgba(0, 240, 255, 0.1);
    border: 1px dashed var(--primary);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    font-family: 'Courier New', monospace;
    color: var(--primary);
    font-size: 0.875rem;
}

.download-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.125rem;
}

/* ==================== CTA区域 ==================== */
.cta-section {
    padding: 6rem 2rem;
    position: relative;
}

.cta-container {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 32px;
    padding: 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.cta-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-desc {
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ==================== 免责声明 ==================== */
.disclaimer {
    padding: 4rem 2rem;
    background: rgba(255, 193, 7, 0.05);
    border-top: 1px solid rgba(255, 193, 7, 0.2);
    border-bottom: 1px solid rgba(255, 193, 7, 0.2);
}

.disclaimer-container {
    max-width: 900px;
    margin: 0 auto;
}

.disclaimer-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: #ffc107;
}

.disclaimer-header svg {
    width: 28px;
    height: 28px;
}

.disclaimer-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.disclaimer-content {
    color: var(--text-muted);
    line-height: 1.8;
    padding-left: 2.5rem;
}

/* ==================== 页脚 ==================== */
.footer {
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
    background: var(--dark);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.footer-links a {
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    width: 100%;
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-bottom a {
    color: var(--primary);
}

/* ==================== 滚动显示（简化版） ==================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.5s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 延迟 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 5rem 1rem 3rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .features,
    .downloads,
    .cta-section {
        padding: 4rem 1rem;
    }
    
    .downloads-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-container {
        padding: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ==================== 隐藏不需要的元素 ==================== */
.loading-screen,
.particles,
.matrix-bg,
.scanline {
    display: none !important;
}