/* ===========================
   Professional Academic Portfolio
   ========================== */

:root {
    --bg-primary: #1a1b26;
    --bg-secondary: #24283b;
    --bg-accent: #2d3248;
    --text-primary: #c0caf5;
    --text-secondary: #a9b1d6;
    --text-bright: #ffffff;
    --accent-blue: #7aa2f7;
    --accent-purple: #bb9af7;
    --border-color: #414868;
    --hover-bg: #343a55;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1 {
    font-size: 2.5rem;
    text-align: center;
    color: var(--text-bright);
    margin: 2rem 0 1rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

h2 {
    font-size: 1.75rem;
    color: var(--text-bright);
    margin-bottom: 1.5rem;
    font-weight: 600;
    position: relative;
    padding-bottom: 0.5rem;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    border-radius: 2px;
}

/* Tagline */
.tagline {
    text-align: center;
    margin: -0.5rem 0 2rem;
}

.tagline-role {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.4rem;
}

.tagline-role a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

.tagline-role a:hover {
    color: var(--accent-purple);
}

.tagline-topics {
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Profile Section */
.profile {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    margin: 3rem 0 4rem;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.profile img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

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

.bio {
    max-width: 600px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.bio p {
    margin-bottom: 1rem;
}

.bio a {
    color: #8891b8;
    text-decoration: underline;
}

/* Section Styling */
.section {
    margin: 3rem 0;
    padding: 2rem;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.section:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

/* News Section */
.news-box {
    background-color: var(--bg-accent);
    padding: 1.5rem;
    max-height: 300px;
    overflow-y: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.95rem;
}

.news-box::-webkit-scrollbar {
    width: 8px;
}

.news-box::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

.news-box::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 4px;
}

.news-box::-webkit-scrollbar-thumb:hover {
    background: var(--accent-purple);
}

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

.news li {
    margin-bottom: 1rem;
    padding-left: 0;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.news li:hover {
    color: var(--text-bright);
}

/* Publications Section */
.publication-item {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background-color: var(--bg-accent);
    border-radius: 12px;
    border-left: 4px solid var(--accent-blue);
    transition: all 0.3s ease;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

.publication-item:hover {
    background-color: var(--hover-bg);
    border-left-color: var(--accent-purple);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(122, 162, 247, 0.2);
}

.pub-figure {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pub-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
}

.figure-caption {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
}

.pub-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pub-citation {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.pub-citation strong {
    color: var(--text-bright);
}

.pub-citation em {
    color: var(--accent-purple);
}

.pub-summary {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-style: italic;
    padding: 0.75rem;
    background-color: var(--bg-secondary);
    border-radius: 6px;
    border-left: 3px solid var(--accent-purple);
    margin: 0;
}

.pub-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--accent-blue);
    color: var(--bg-primary);
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.publications a {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Awards Section */
.awards ul {
    list-style: none;
    padding: 0;
}

.awards li {
    margin-bottom: 1.75rem;
    padding: 1.5rem;
    background-color: var(--bg-accent);
    border-radius: 8px;
    border-left: 4px solid var(--accent-blue);
    transition: all 0.3s ease;
    position: relative;
}

.awards li:hover {
    background-color: var(--hover-bg);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(122, 162, 247, 0.2);
}

.awards li::before {
    content: '🏆';
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.5rem;
    opacity: 0.3;
}

.awards strong {
    color: var(--text-bright);
    font-size: 1.1rem;
}

.award-description {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.95rem;
}

/* Talks Section */
.talks-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 0.5rem;
}

.talks-list li {
    padding: 0.6rem 1rem;
    background-color: var(--bg-accent);
    border-radius: 6px;
    border-left: 3px solid var(--accent-purple);
    transition: all 0.2s ease;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.talks-list li:hover {
    background-color: var(--hover-bg);
    transform: translateX(3px);
}

.talks-list .year {
    display: inline-block;
    min-width: 55px;
    padding: 0.15rem 0.4rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: var(--bg-primary);
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.8rem;
    text-align: center;
    margin-right: 0.5rem;
}

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

.education li {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--bg-accent);
    border-radius: 8px;
    border-left: 4px solid var(--accent-purple);
    transition: all 0.3s ease;
}

.education li:hover {
    background-color: var(--hover-bg);
    transform: translateX(5px);
}

.education strong {
    color: var(--accent-blue);
    font-size: 1.1rem;
}

/* Social Section */
.social {
    text-align: center;
    margin: 4rem 0 2rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--bg-secondary);
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.social-icons a:hover {
    background-color: var(--accent-blue);
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 12px rgba(122, 162, 247, 0.4);
}

.social-icons img.icon {
    width: 24px;
    height: 24px;
    filter: invert(100%);
    transition: filter 0.3s ease;
}

.social-icons a:hover img.icon {
    filter: invert(100%) brightness(1.2);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 4rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .profile {
        flex-direction: column;
        gap: 2rem;
        padding: 1.5rem;
    }

    .profile img {
        width: 180px;
        height: 180px;
    }

    .bio {
        max-width: 100%;
        font-size: 1rem;
    }

    .section {
        padding: 1.5rem;
    }

    .publication-item {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pub-img {
        height: 200px;
    }

    .social-icons {
        gap: 1.5rem;
    }

    .social-icons a {
        width: 45px;
        height: 45px;
    }

    .news-box {
        max-height: 250px;
        padding: 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .profile {
        padding: 1rem;
    }

    .profile img {
        width: 150px;
        height: 150px;
    }

    .section {
        padding: 1rem;
        margin: 2rem 0;
    }

    .social-icons {
        gap: 1rem;
    }

    .publication-item,
    .awards li,
    .talks-list li,
    .education li {
        padding: 1rem;
        font-size: 0.95rem;
    }

    .pub-img {
        height: 150px;
    }

    .awards li::before {
        font-size: 1.2rem;
        right: 1rem;
        top: 1rem;
    }

    .talks-list {
        grid-template-columns: 1fr;
        gap: 0.4rem;
    }

    .talks-list li {
        padding: 0.5rem 0.8rem;
        font-size: 0.9rem;
    }

    .talks-list .year {
        min-width: 50px;
        font-size: 0.75rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background-color: var(--accent-blue);
    color: var(--bg-primary);
}

/* Loading Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeIn 0.6s ease-out;
}