/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(30, 41, 59, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo a:hover {
    color: #f59e0b;
}

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

.nav-link {
    color: #334155;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #1e293b;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #1e293b, #f59e0b);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #1e293b;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.highlight {
    color: #f59e0b;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #f59e0b, #d97706);
    border-radius: 2px;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.95;
    color: #e2e8f0;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.7;
    color: #cbd5e1;
}

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

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-outline {
    background: transparent;
    color: #1e293b;
    border: 2px solid #1e293b;
}

.btn-outline:hover {
    background: #1e293b;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 41, 59, 0.3);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-placeholder {
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    color: rgba(255, 255, 255, 0.2);
    border: 4px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* 头像图片样式 */
.profile-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: transform 0.3s ease;
}

.profile-avatar:hover {
    transform: scale(1.05);
}

/* Section Styles */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #1e293b, #f59e0b);
    border-radius: 2px;
}

/* About Section */
.about {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    color: #1e293b;
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(30,41,59,0.03)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.about .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro,
.about-journey,
.about-philosophy,
.professional-path {
    margin-bottom: 3rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(30, 41, 59, 0.1);
    transition: all 0.3s ease;
}

.about-intro:hover,
.about-journey:hover,
.about-philosophy:hover,
.professional-path:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(30, 41, 59, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
}

.about-intro h3,
.about-journey h3,
.about-philosophy h3,
.professional-path h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
    text-align: center;
    position: relative;
}

.about-intro h3::after,
.about-journey h3::after,
.about-philosophy h3::after,
.professional-path h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #1e293b, #f59e0b);
    border-radius: 2px;
}

.about-intro p,
.about-philosophy p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #334155;
    text-align: center;
    margin-bottom: 0;
}

.highlight-text {
    background: linear-gradient(135deg, #1e293b, #334155);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    padding: 0 0.25rem;
}

.journey-points {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.journey-point {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    border-left: 4px solid #f59e0b;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(30, 41, 59, 0.05);
}

.journey-point:hover {
    transform: translateX(8px);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 8px 25px rgba(30, 41, 59, 0.1);
    border-left-color: #d97706;
}

.journey-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    width: 4rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-radius: 50%;
    color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.journey-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

.journey-content p {
    font-size: 1rem;
    color: #475569;
    line-height: 1.7;
    margin-bottom: 0;
}

/* Professional Path Timeline */
.path-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
}

.path-timeline::before {
    content: '';
    position: absolute;
    left: 2rem;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #1e293b, #f59e0b);
    border-radius: 2px;
}

.path-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    position: relative;
    padding-left: 4rem;
}

.path-item::before {
    content: '';
    position: absolute;
    left: 1.5rem;
    top: 2rem;
    width: 0.75rem;
    height: 0.75rem;
    background: #f59e0b;
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px #f59e0b;
}

.path-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 50%;
    color: #1e293b;
    border: 2px solid #f59e0b;
    box-shadow: 0 4px 15px rgba(30, 41, 59, 0.1);
}

.path-content {
    flex: 1;
    background: rgba(255, 255, 255, 0.8);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 3px solid #f59e0b;
    box-shadow: 0 4px 15px rgba(30, 41, 59, 0.05);
}

.path-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.75rem;
}

.path-content p {
    font-size: 1rem;
    color: #475569;
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.path-duration {
    display: inline-block;
    background: linear-gradient(135deg, #1e293b, #334155);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(30, 41, 59, 0.2);
}

/* Skills Section */
.skills {
    padding: 5rem 0;
    background: white;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2.5rem;
}

.skill-category {
    background: #f8fafc;
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(30, 41, 59, 0.05);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(30, 41, 59, 0.1);
    border-color: #cbd5e1;
}

.skill-category h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #1e293b;
    text-align: center;
    position: relative;
    padding-bottom: 0.75rem;
}

.skill-category h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, #1e293b, #f59e0b);
    border-radius: 2px;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(30, 41, 59, 0.05);
}

.skill-item:hover {
    border-color: #1e293b;
    box-shadow: 0 4px 20px rgba(30, 41, 59, 0.1);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-name {
    font-weight: 600;
    color: #1e293b;
    font-size: 1.1rem;
    flex: 1;
    min-width: 200px;
}

.skill-level {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.skill-level.expert {
    background: linear-gradient(135deg, #059669, #047857);
    color: white;
}

.skill-level.intermediate {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.skill-level.beginner {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: white;
}

.skill-details {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: #f1f5f9;
    color: #475569;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background: #e2e8f0;
    color: #1e293b;
    border-color: #cbd5e1;
    transform: translateY(-1px);
}

/* Projects Section */
.projects {
    padding: 5rem 0;
    background: #f8fafc;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(30, 41, 59, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(30, 41, 59, 0.15);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, #1e293b, #334155);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.project-placeholder {
    font-size: 3rem;
    color: white;
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 300px;
}

.project-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
    line-height: 1.4;
    min-height: 3.6rem;
    display: flex;
    align-items: flex-start;
}

.project-content p {
    color: #475569;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    min-height: 5.5rem;
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    min-height: 2.5rem;
    align-items: center;
}

.tech-tag {
    background: #f1f5f9;
    color: #374151;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.tech-tag:hover {
    background: #e2e8f0;
    color: #1e293b;
    border-color: #cbd5e1;
}

.project-links {
    display: flex;
    gap: 0.5rem;
    margin-top: auto;
    min-height: 2.5rem;
    align-items: center;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
}

.contact-info p {
    color: #475569;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #475569;
}

.contact-method i {
    color: #1e293b;
    font-size: 1.2rem;
    width: 20px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-link {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1e293b, #334155);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    transition: left 0.3s ease;
}

.social-link:hover::before {
    left: 0;
}

.social-link i {
    position: relative;
    z-index: 2;
    font-size: 1.2rem;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(30, 41, 59, 0.3);
}

.social-link[title="LinkedIn"]:hover {
    background: linear-gradient(135deg, #0077b5, #005885);
}

.social-link[title="GitHub"]:hover {
    background: linear-gradient(135deg, #333, #24292e);
}

.social-link[title="Email"]:hover {
    background: linear-gradient(135deg, #ea4335, #d33426);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
    background: #f8fafc;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1e293b;
    background: white;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form Status Messages */
.form-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-status.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    display: block;
}

.form-status.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
    display: block;
}

.form-status.loading {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
    display: block;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 2rem 0;
    text-align: center;
}

.footer-content p {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

/* Construction Notice */
.construction-notice {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #1e293b;
    padding: 3rem 0;
    text-align: center;
}

.construction-content {
    max-width: 600px;
    margin: 0 auto;
}

.construction-content i {
    font-size: 3rem;
    color: #1e293b;
    margin-bottom: 1rem;
}

.construction-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #1e293b;
}

.construction-content p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
    opacity: 0.9;
}

.construction-content p:last-child {
    font-size: 0.9rem;
    opacity: 0.7;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        justify-content: center;
    }

    .path-timeline::before {
        left: 1.25rem;
    }
    
    .path-item {
        padding-left: 2.5rem;
    }
    
    .path-item::before {
        left: 1rem;
    }
    
    .journey-icon,
    .path-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .hero-container {
        padding: 0 15px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.about-text,
.skill-category,
.project-card,
.contact-info {
    animation: fadeInUp 0.8s ease-out;
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}