:root {
    --primary-color: #184D1E;
    --background-color: #f8f8f8;
    --content-bg-color: #ffffff;
    --text-color: #333333;
    --text-secondary-color: #555555;
    --text-on-primary-color: #ffffff;
    --border-color: #e0e0e0;
    --header-bg-color: #ffffff;
    --footer-bg-color: #333333;
    --footer-text-color: #ffffff;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--background-color);
    margin: 0;
    padding: 0;
    scroll-behavior: smooth;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: var(--header-bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 65px;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

nav .nav-brand {
    font-size: 1.4em;
    font-weight: 700;
    color: var(--text-color);
    text-decoration: none;
}

nav ul {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-secondary-color);
    font-weight: 600;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--primary-color);
}

main section {
    margin-bottom: 40px;
}

#about {
    padding-top: 60px;
}

.profile-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 40px;
    text-align: center;
}

.profile-pic {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    margin-bottom: 20px;
}

.profile-info h1 {
    font-size: 2.8em;
    margin: 0 0 10px 0;
    color: var(--text-color);
}

.profile-info .subtitle {
    font-size: 1.1em;
    color: var(--text-secondary-color);
    margin-bottom: 25px;
}

.links .button {
    display: inline-block;
    background: var(--content-bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 10px 18px;
    text-decoration: none;
    margin: 5px;
    font-weight: 600;
    transition: all 0.3s;
}

.links .button:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.section-title {
    background-color: var(--primary-color);
    color: var(--text-on-primary-color);
    text-align: center;
    padding: 25px 20px;
}

.section-title h2 {
    font-size: 1.8em;
    margin: 0;
    padding: 0;
}

.content-box {
    background-color: var(--content-bg-color);
    border: 1px solid var(--border-color);
    border-top: none;
    padding: 30px;
}

#news ul {
    list-style: none;
    padding: 0;
}

#news li {
    margin-bottom: 15px;
    display: flex;
    align-items: baseline;
}

#news .date {
    font-weight: 600;
    color: var(--primary-color);
    margin-right: 15px;
    min-width: 90px;
}

.publication {
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px dashed var(--border-color);
}
.publication:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.publication h3 {
    font-size: 1.2em;
    margin: 0 0 5px 0;
    color: var(--text-color);
}

.publication .authors, .publication .venue {
    font-size: 0.95em;
    margin: 0 0 10px 0;
    color: var(--text-secondary-color);
}

.publication .pub-links a {
    margin-right: 15px;
    text-decoration: none;
    font-weight: 600;
    color: var(--primary-color);
}

.publication .pub-links a:hover {
    text-decoration: underline;
}

.experience-item {
    margin-bottom: 25px;
}
.experience-item:last-child {
    margin-bottom: 0;
}
.experience-item h3 {
    margin: 0;
    font-size: 1.2em;
}
.experience-item .exp-subtitle {
    margin: 4px 0 8px 0;
    color: var(--text-secondary-color);
    font-size: 0.9em;
}

.experience-item ul {
    margin-top: 5px;
    padding-left: 20px;
}

footer {
    background: var(--footer-bg-color);
    color: var(--footer-text-color);
    text-align: center;
    padding: 30px 20px;
    font-size: 0.9em;
    margin-top: 40px;
}

@media (max-width: 768px) {
    .profile-info h1 { font-size: 2.2em; }
    .section-title h2 { font-size: 1.5em; }
    .content-box { padding: 30px 20px; }
}