:root {
    --primary: #6C63FF;
    --secondary: #4A44C6;
    --dark: #121212;
    --light: #FFFFFF;
    --glass: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(31, 38, 135, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 0;
}

body {
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    color: var(--light);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    background-attachment: fixed;
}

.page-content {
    scroll-margin-top: 0;
    min-height: 100vh;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
    animation-delay: 0.2s;
}

/* 粒子背景 */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* 玻璃态卡片 */
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: var(--shadow);
    padding: 2rem;
    transition: transform 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-10px);
}

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

.hero-content {
    max-width: 800px;
    width: 100%;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.highlight {
    background: linear-gradient(to right, #6C63FF, #4A44C6);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: linear-gradient(to right, #6C63FF, #4A44C6);
    color: white;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(100,255,218,0.4);
}

/* 内容区块 */
section {
    padding: 5rem 10%;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, #6C63FF, #4A44C6);
    border-radius: 2px;
}

/* 技能卡片 */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-card {
    text-align: center;
    padding: 2rem;
}

.skill-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #6C63FF;
}

/* 项目展示 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    overflow: hidden;
    border-radius: 16px;
}

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.project-info {
    padding: 1.5rem;
}

/* 页脚 */
footer {
    text-align: center;
    padding: 2rem;
    background: rgba(0, 0, 0, 0.2);
    margin-top: 5rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass);
    color: var(--light);
    font-size: 1.5rem;
    transition: transform 0.3s, background 0.3s;
}

.social-links a:hover {
    transform: translateY(-5px);
    background: linear-gradient(to right, #6C63FF, #4A44C6);
}

/* 页面切换动画 */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-transition.active {
    opacity: 1;
    visibility: visible;
}

.page-transition .loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.page-transition .loading-text {
    color: #64ffda;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
}

.page-transition .loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(100,255,218,0.3);
    border-radius: 50%;
    border-top-color: #64ffda;
    animation: spin 1s ease-in-out infinite;
    margin-left: 10px;
}

.page-transition .loading-dots {
    display: flex;
    gap: 0.5rem;
}

.page-transition .loading-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #64ffda;
    animation: loadingDots 1.4s infinite both;
}

.page-transition .loading-dot:nth-child(1) { animation-delay: -0.32s; }
.page-transition .loading-dot:nth-child(2) { animation-delay: -0.16s; }
.page-transition .loading-dot:nth-child(3) { animation-delay: 0s; }

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes loadingDots {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 邮箱弹窗样式 */
.email-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.email-modal.show {
    opacity: 1;
    visibility: visible;
}

.email-modal-content {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    text-align: center;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.email-modal.show .email-modal-content {
    transform: scale(1);
}

.email-modal h3 {
    color: var(--light);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.email-options {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.email-option-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.email-option-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.email-option-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.email-option-btn:hover::before {
    left: 100%;
}

.email-modal-close {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.7rem 1.5rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.email-modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(76, 175, 80, 0.3);
    z-index: 10001;
    transform: translateX(100%);
    transition: transform 0.3s ease, opacity 0.3s ease;
    font-size: 0.9rem;
    max-width: 300px;
}

.notification.show {
    transform: translateX(0);
}

/* 移动端优化 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    section {
        padding: 3rem 5%;
    }
    
    .page-transition .loading-text {
        font-size: 1.2rem;
    }
    
    .page-content {
        animation-duration: 0.4s;
    }
    
    .email-modal-content {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .email-modal h3 {
        font-size: 1.1rem;
    }
    
    .email-option-btn {
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
    }
    
    .notification {
        right: 10px;
        top: 10px;
        max-width: calc(100vw - 20px);
        font-size: 0.8rem;
    }
}