:root {
    --color-primary: #2c3e50;
    --color-accent: #3498db;
    --color-accent-hover: #2980b9;
    --color-text: #333;
    --color-text-muted: #666;
    --color-bg: #fafafa;
    --color-card-bg: #fff;
    --color-border: #e0e0e0;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 900px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

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

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

/* Header / Profile Section */
.profile {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.profile-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-card-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.profile-info {
    flex: 1;
}

.profile-info h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.profile-info .subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.profile-info .location {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.profile-info .email {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.profile-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.profile-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.8rem;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.profile-links a:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    text-decoration: none;
}

/* Bio Section */
.bio {
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-xl);
    font-size: 1rem;
}

.bio p {
    margin-bottom: var(--spacing-md);
}

.bio p:last-child {
    margin-bottom: 0;
}

/* Publications Section */
.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

.publications {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.publication {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--color-card-bg);
    padding: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: box-shadow 0.2s ease;
}

.publication:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.publication-image {
    flex-shrink: 0;
    width: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.publication-image img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

.publication-image.dual img {
    max-width: 48%;
}

.publication-content {
    flex: 1;
    min-width: 0;
}

.publication-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.publication-authors {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.publication-authors .me {
    color: var(--color-text);
    font-weight: 500;
}

.publication-venue {
    font-size: 0.9rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.publication-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.publication-links a {
    font-size: 0.85rem;
    padding: 0.25rem 0.6rem;
    background: #f0f7ff;
    border-radius: 4px;
    color: var(--color-accent);
    font-weight: 500;
}

.publication-links a:hover {
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
}

/* Responsive Design */
@media (max-width: 700px) {
    body {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .profile {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

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

    .profile-links {
        justify-content: center;
    }

    .publication {
        flex-direction: column;
    }

    .publication-image {
        width: 100%;
        max-width: 250px;
        margin: 0 auto;
    }
}

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