/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0a0a0a;
    overflow-x: hidden;
}

/* 背景动画 */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s infinite linear;
}

.shape-1 {
    width: 80px;
    height: 80px;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    left: 20%;
    animation-delay: 2s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    left: 70%;
    animation-delay: 4s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    left: 80%;
    animation-delay: 6s;
}

.shape-5 {
    width: 140px;
    height: 140px;
    left: 50%;
    animation-delay: 8s;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
}

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

.nav-brand .brand-text {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-subtitle {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
}

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

.nav-item {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-item:hover,
.nav-item.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

/* 主要内容 */
.main-content {
    padding-top: 80px;
}

/* 英雄区域 */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 2rem 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    z-index: 10;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, #ff6b6b, #feca57, #48dbfb, #ff9ff3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 300% 300%;
    animation: gradientShift 3s ease infinite;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

/* 英雄视觉效果 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-card {
    position: relative;
    width: 300px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.card-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, #667eea, #764ba2, #f093fb);
    border-radius: 20px;
    z-index: -1;
    opacity: 0.5;
    filter: blur(10px);
}

.card-content {
    z-index: 10;
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ff6b6b, #feca57);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.visual-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: white;
}

.visual-card p {
    color: rgba(255, 255, 255, 0.8);
}

/* 工具区域 */
.tools-section {
    padding: 6rem 0;
    position: relative;
}

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

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

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.tool-card {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
    transition: all 0.3s ease;
    overflow: hidden;
}

.tool-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.tool-card.featured {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(102, 126, 234, 0.3);
}

.card-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tool-card:hover .card-background {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: #667eea;
}

.tool-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.tool-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex-grow: 1;
}

.tool-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.feature-tag {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.tool-action {
    margin-top: auto;
}

.tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

.tool-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.coming-soon {
    opacity: 0.6;
}

.coming-soon-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 193, 7, 0.2);
    color: #ffc107;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 1rem;
}

.card-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.tool-card:hover .card-shine {
    left: 100%;
}

/* 关于区域 */
.about-section {
    padding: 6rem 0;
    background: rgba(0, 0, 0, 0.2);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 3rem;
}

.about-stats {
    display: flex;
    gap: 2rem;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.visual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    width: 200px;
    height: 200px;
}

.grid-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    animation: gridPulse 2s ease-in-out infinite;
}

.grid-item:nth-child(1) { animation-delay: 0s; }
.grid-item:nth-child(2) { animation-delay: 0.5s; }
.grid-item:nth-child(3) { animation-delay: 1s; }
.grid-item:nth-child(4) { animation-delay: 1.5s; }

@keyframes gridPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.8; }
}

/* 底部 */
.footer {
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem 0 1rem;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-item {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .visual-card {
        width: 250px;
        height: 300px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .about-stats {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.8rem 1.5rem;
    }
    
    .tool-card {
        padding: 1.5rem;
    }
    
    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }
}