* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --secondary-color: #4f46e5;
    --accent-color: #8b5cf6;
    --bg-dark: #1f2937;
    --bg-darker: #111827;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-light: #f9fafb;
    --text-muted: #9ca3af;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
    min-height: 100vh;
    overflow-x: hidden;
    color: var(--text-light);
    line-height: 1.6;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

/* 容器 */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* 欢迎页面 */
.intro {
    text-align: center;
    transition: all 0.8s ease;
    opacity: 1;
    transform: translateY(0);
}

.intro.hidden {
    opacity: 0;
    transform: translateY(-50px);
    pointer-events: none;
}

.glitch {
    font-size: 4rem;
    font-weight: 700;
    position: relative;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    color: var(--text-light);
    letter-spacing: 1px;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    animation: glitch-1 2s infinite linear alternate-reverse;
    color: var(--accent-color);
    z-index: -1;
}

.glitch::after {
    animation: glitch-2 3s infinite linear alternate-reverse;
    color: var(--primary-color);
    z-index: -2;
}

@keyframes glitch-1 {
    0% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0); }
}

@keyframes glitch-2 {
    0% { transform: translate(0); }
    20% { transform: translate(2px, 2px); }
    40% { transform: translate(2px, -2px); }
    60% { transform: translate(-2px, 2px); }
    80% { transform: translate(-2px, -2px); }
    100% { transform: translate(0); }
}

.subtitle {
    font-size: 1.3rem;
    color: var(--text-muted);
    margin: 20px 0;
    opacity: 0;
    animation: fadeInUp 1s ease 0.5s forwards;
    font-weight: 300;
}

.enter-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    color: white;
    padding: 14px 42px;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
    opacity: 0;
    animation: fadeInUp 1s ease 0.8s forwards;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0 auto;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.enter-btn:hover {
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

.enter-btn:active {
    transform: translateY(0);
}

.enter-btn i {
    transition: transform 0.3s ease;
}

.enter-btn:hover i {
    transform: translateX(3px);
}

/* 主内容区 */
.main-content {
    opacity: 0;
    transform: translateY(50px);
    pointer-events: none;
    transition: all 0.8s ease;
    width: 100%;
    max-width: 600px;
}

.main-content.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

/* 卡片样式 */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

.card-inner {
    padding: 32px;
}

/* 个人资料区域 */
.profile-section {
    text-align: center;
    margin-bottom: 32px;
}

.avatar-container {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    object-fit: cover;
}

.avatar-ring {
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border: 2px solid transparent;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    z-index: -1;
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.avatar:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

.profile-section h2 {
    font-size: 1.8rem;
    margin-bottom: 8px;
    color: var(--text-light);
    font-weight: 600;
}

.signature {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: normal;
}

/* 导航链接 */
.nav-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
    margin-bottom: 32px;
}

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-light);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover {
    transform: translateY(-2px);
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.nav-link.admin-link {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
}

.nav-link.admin-link:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--error-color);
}

.nav-link i {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.nav-link.admin-link i {
    color: var(--error-color);
}

.nav-link span {
    font-size: 0.85rem;
    font-weight: 500;
}

/* 技能区域 */
.skills-section {
    margin-top: 24px;
}

.section-title {
    text-align: center;
    font-size: 1.4rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-light);
    font-weight: 600;
}

.section-title i {
    color: var(--primary-color);
}

.skills-grid {
    display: grid;
    gap: 20px;
}

.skill-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    position: relative;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideInLeft 0.6s ease forwards;
}

.skill-item:nth-child(1) { animation-delay: 0.1s; }
.skill-item:nth-child(2) { animation-delay: 0.2s; }
.skill-item:nth-child(3) { animation-delay: 0.3s; }
.skill-item:nth-child(4) { animation-delay: 0.4s; }

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.skill-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-color);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.skill-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-light);
}

.skill-percentage {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.skill-bar {
    position: relative;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 3px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.skill-progress.animated {
    width: var(--progress);
}

.skill-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.skill-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(31, 41, 55, 0.95);
    color: var(--text-light);
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.skill-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: rgba(31, 41, 55, 0.95);
}

.skill-item:hover .skill-tooltip {
    opacity: 1;
    transform: translateX(-50%) translateY(-2px);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .glitch {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .card-inner {
        padding: 24px 16px;
    }
    
    .nav-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-section h2 {
        font-size: 1.5rem;
    }
    
    .avatar {
        width: 80px;
        height: 80px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 16px;
    }
    
    .glitch {
        font-size: 2rem;
    }
    
    .card-inner {
        padding: 20px 12px;
    }
    
    .nav-links {
        grid-template-columns: 1fr;
    }
    
    .enter-btn {
        padding: 12px 32px;
        font-size: 1rem;
    }
}