/* ==========================================
   产品经理个人主页 - 科技现代风格
   ========================================== */

/* CSS 变量 */
:root {
    /* 主色调 */
    --color-bg: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-card: rgba(255, 255, 255, 0.03);
    --color-bg-card-hover: rgba(255, 255, 255, 0.06);

    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-text: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);

    /* 文字颜色 */
    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);

    /* 边框 */
    --color-border: rgba(255, 255, 255, 0.1);

    /* 阴影 */
    --shadow-glow: 0 0 60px rgba(102, 126, 234, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);

    /* 间距 */
    --section-padding: 120px 0;
    --container-width: 1200px;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================
   导航栏
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.nav-logo .accent {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

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

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

/* ==========================================
   Hero 区域
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 100px 24px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    bottom: -100px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(-30px, -20px) scale(1.02);
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-subtitle .highlight {
    color: var(--color-text);
    font-weight: 500;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--color-bg-card-hover);
    border-color: rgba(255, 255, 255, 0.2);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: rotate(45deg);
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ==========================================
   通用 Section 样式
   ========================================== */
.section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
}

/* ==========================================
   关于我
   ========================================== */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

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

.image-frame {
    position: relative;
    padding: 8px;
    background: var(--gradient-primary);
    border-radius: 20px;
}

.avatar-placeholder {
    width: 280px;
    height: 280px;
    background: var(--color-bg);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-text-muted);
}

.about-text h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--color-bg-card);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.highlight-item:hover {
    background: var(--color-bg-card-hover);
    transform: translateY(-2px);
}

.highlight-icon {
    font-size: 1.5rem;
}

/* ==========================================
   技能
   ========================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.skill-card {
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.skill-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.skill-card:hover {
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.skill-card h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.skill-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

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

.skill-progress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 3px;
    width: 0;
    transition: width 1s ease;
}

.skill-card.animate .skill-progress {
    width: var(--progress, 0);
}

.tools-section {
    text-align: center;
}

.tools-section h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.tools-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.tool-tag {
    padding: 10px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-normal);
}

.tool-tag:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

/* ==========================================
   工作经历
   ========================================== */
.experience {
    background: var(--color-bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--gradient-primary), transparent);
}

.timeline-item {
    position: relative;
    padding-bottom: 48px;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease;
}

.timeline-item.fade-in {
    opacity: 1;
    transform: translateX(0);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -46px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
}

.timeline-content {
    padding: 24px 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    background: var(--color-bg-card-hover);
    transform: translateX(8px);
}

.timeline-date {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.timeline-content h4 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.company {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.timeline-list {
    list-style: none;
}

.timeline-list li {
    position: relative;
    padding-left: 20px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.timeline-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

/* ==========================================
   联系方式
   ========================================== */
.contact-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.contact-card {
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(20px);
}

.contact-card.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.contact-card:hover {
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.contact-card h4 {
    margin-bottom: 8px;
}

.contact-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.social-link {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text-secondary);
    transition: all var(--transition-normal);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.social-link:hover {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-note {
    margin-top: 8px;
    font-size: 0.85rem !important;
}

.footer-icp {
    margin-top: 12px;
    display: inline-block;
}

.footer-icp,
.footer-icp a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color var(--transition-fast);
}

.footer-icp a:hover {
    color: var(--color-text-secondary);
}

.footer-beian {
    display: flex !important;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.footer-beian .footer-icp {
    margin-top: 0;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-highlights {
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-stats {
        gap: 40px;
    }

    .contact-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    .nav-links {
        display: none;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline-dot {
        left: -36px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .avatar-placeholder {
        width: 200px;
        height: 200px;
        font-size: 3rem;
    }
}

/* ==========================================
   留言板
   ========================================== */
.messages {
    background: var(--color-bg-secondary);
}

.messages-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.messages-intro {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 48px;
}

.messages-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
    text-align: left;
}

.message-form-card,
.message-info-card {
    padding: 32px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.message-form-card:hover,
.message-info-card:hover {
    background: var(--color-bg-card-hover);
    box-shadow: var(--shadow-glow);
}

.message-card-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.message-form-card h4,
.message-info-card h4 {
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.message-form .form-group {
    margin-bottom: 16px;
}

.message-form .form-input,
.message-form .form-textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    color: var(--color-text);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-normal);
}

.message-form .form-input:focus,
.message-form .form-textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

.message-form .form-textarea {
    min-height: 100px;
    resize: vertical;
}

.message-form .form-input::placeholder,
.message-form .form-textarea::placeholder {
    color: var(--color-text-muted);
}

.btn-full {
    width: 100%;
}

.message-result {
    margin-top: 16px;
    text-align: center;
    display: none;
}

.message-result.show {
    display: block;
}

.message-tips {
    list-style: none;
    padding: 0;
}

.message-tips li {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.message-tips li:last-child {
    border-bottom: none;
}

.message-stats {
    margin-top: 24px;
    padding: 16px;
    background: var(--gradient-primary);
    border-radius: 12px;
    text-align: center;
}

.message-stats .stat {
    font-weight: 600;
    color: white;
}

/* 响应式留言板 */
@media (max-width: 768px) {
    .messages-grid {
        grid-template-columns: 1fr;
    }
}