/* --- Imports --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Variables --- */
:root {
    --primary-color: #0066cc;
    --primary-hover: #004c99;
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #737373;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

/* --- Global Styles --- */
body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-medium);
    background-color: var(--bg-color);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* --- Layout Container --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 60px 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
}

/* --- Left Sidebar (Profile) --- */
.sidebar {
    flex: 1;
    min-width: 260px;
    max-width: 300px;
    text-align: left;
}

/* Sticky Sidebar on Desktop */
@media (min-width: 769px) {
    .sidebar {
        position: sticky;
        top: 40px;
        height: fit-content;
    }
}

.profile-img {
    width: 100%;
    max-width: 240px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
    transition: transform 0.3s ease;
}

.profile-img:hover {
    transform: scale(1.02);
}

.name-header {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.affiliation {
    font-size: 16px;
    color: var(--text-medium);
    margin-bottom: 24px;
    line-height: 1.5;
}

.contact-info {
    font-size: 14px;
    line-height: 2;
    color: var(--text-light);
    margin-bottom: 24px;
}

.contact-info i {
    width: 20px;
    color: var(--text-light);
    text-align: center;
    margin-right: 8px;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #fff;
    color: var(--text-medium);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    font-size: 18px;
    text-decoration: none;
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* --- Right Content (Main) --- */
.main-content {
    flex: 3;
    min-width: 300px;
}

section {
    margin-bottom: 60px;
}

h2 {
    font-size: 24px;
    font-weight: 700;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 12px;
    margin-bottom: 24px;
    color: var(--text-dark);
    letter-spacing: -0.5px;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background-color: var(--primary-color);
}

h3 {
    font-size: 20px;
    color: var(--text-dark);
    margin-top: 40px;
    margin-bottom: 20px;
    font-weight: 600;
}

p {
    margin-bottom: 16px;
    color: var(--text-medium);
}

/* --- News List --- */
ul.news-list {
    list-style: none;
    padding: 0;
}

ul.news-list li {
    margin-bottom: 12px;
    padding-left: 16px;
    position: relative;
}

ul.news-list li::before {
    content: '•';
    color: var(--primary-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.date {
    font-weight: 600;
    font-family: var(--font-main);
    color: var(--text-dark);
    margin-right: 8px;
    font-size: 0.95em;
}

/* --- Publication Item (Card Style) --- */
.paper-item {
    display: flex;
    gap: 24px;
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.paper-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.paper-img {
    flex: 0 0 220px;
}

.paper-img img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    object-position: center;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.paper-details {
    flex: 1;
}

/* --- Project Item (Text Only) --- */
.project-item-text {
    margin-bottom: 24px;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    border-left: 4px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.project-item-text:hover {
    border-left-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

/* --- Typography for Titles/Authors --- */
.paper-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    display: block;
    color: var(--text-dark);
    line-height: 1.4;
}

.paper-title:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.authors {
    font-size: 15px;
    color: var(--text-medium);
    margin-bottom: 8px;
}

.author-note {
    font-size: 13px;
    color: var(--text-light);
    margin-top: -4px;
    margin-bottom: 8px;
}

.venue {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tag-under-review {
    color: #e02424;
    background-color: #fde8e8;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.tag-wip {
    color: #92400e;
    background-color: #fef3c7;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.paper-links {
    margin-top: 12px;
}

.paper-links a {
    display: inline-block;
    margin-right: 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 0;
}

.paper-links a:hover {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid var(--primary-color);
}

/* --- Education --- */
#education ul {
    list-style: none;
    padding: 0;
}

#education li {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

/* --- Responsive Tweaks --- */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        padding: 40px 20px;
        gap: 40px;
    }
    
    .sidebar {
        max-width: 100%;
        text-align: center;
        position: static; /* Reset sticky on mobile */
    }
    
    .profile-img {
        margin: 0 auto 24px auto;
        max-width: 200px;
    }
    
    .contact-info {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .paper-item {
        flex-direction: column;
        padding: 16px;
    }
    
    .paper-img {
        flex: auto;
        max-width: 100%;
        margin-bottom: 16px;
    }

    .paper-img img {
        height: auto;
    }
    
    .paper-links a {
        margin-bottom: 8px;
    }
}