/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-white: #ffffff;
    --bg-gray: #f9fafb;
    --border-color: #e5e7eb;
    --hover-bg: #f3f4f6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--bg-white);
}

/* Navigation */
nav {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    padding: 3rem 0 2rem;
}

.hero-content {
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}

.profile-image {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.hero-text h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.affiliation {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.affiliation a {
    color: var(--primary-color);
    text-decoration: none;
}

.affiliation a:hover {
    text-decoration: underline;
}

.contact {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

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

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: color 0.2s;
}

.social-links a:hover {
    color: var(--primary-color);
}

/* About Section */
.about {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.about h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

.about a {
    color: var(--primary-color);
    text-decoration: none;
}

.about a:hover {
    text-decoration: underline;
}

/* Publications Page */
.publications-list {
    margin-top: 2rem;
}

.publication {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.publication:last-child {
    border-bottom: none;
}

.pub-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.pub-authors {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.pub-authors .me {
    font-weight: 600;
    color: var(--text-primary);
}

.pub-venue {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.pub-links a {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    background-color: var(--bg-gray);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 0.375rem;
    font-size: 0.9rem;
    font-weight: 500;
    margin-right: 0.5rem;
    transition: background-color 0.2s;
}

.pub-links a:hover {
    background-color: var(--hover-bg);
}

/* CV Page */
.cv-section {
    margin-bottom: 3rem;
}

.cv-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
}

.cv-section h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cv-item {
    margin-bottom: 2rem;
}

.cv-date {
    font-family: 'Courier New', monospace;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.cv-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.cv-detail {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

ul.cv-list {
    list-style-type: none;
    padding-left: 0;
}

ul.cv-list li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

ul.cv-list li:before {
    content: "−";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Footer */
footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-gray);
}

footer p {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .profile-image {
        width: 150px;
        height: 150px;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .container {
        padding: 1rem;
    }
}