/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Kumbh Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.8;
    color: #4a4a4a;
    background-color: #ffffff;
    font-weight: 350;
}

/* Background Animation */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

/* Bubbles */
.bubble {
    position: absolute;
    background-color: rgba(255, 107, 107, 0.25);
    border-radius: 50%;
    animation: float-up linear infinite;
}

.bubble-1 {
    width: 30px;
    height: 30px;
    left: 5%;
    bottom: -50px;
    animation-duration: 8s;
    animation-delay: 0s;
}

.bubble-2 {
    width: 20px;
    height: 20px;
    left: 10%;
    bottom: -50px;
    animation-duration: 10s;
    animation-delay: 2s;
}

.bubble-3 {
    width: 25px;
    height: 25px;
    left: 15%;
    bottom: -50px;
    animation-duration: 9s;
    animation-delay: 4s;
}

.bubble-4 {
    width: 35px;
    height: 35px;
    right: 5%;
    bottom: -50px;
    animation-duration: 11s;
    animation-delay: 1s;
}

.bubble-5 {
    width: 22px;
    height: 22px;
    right: 10%;
    bottom: -50px;
    animation-duration: 9.5s;
    animation-delay: 3s;
}

.bubble-6 {
    width: 28px;
    height: 28px;
    right: 15%;
    bottom: -50px;
    animation-duration: 10.5s;
    animation-delay: 5s;
}

.bubble-7 {
    width: 18px;
    height: 18px;
    left: 8%;
    bottom: -50px;
    animation-duration: 11.5s;
    animation-delay: 6s;
}

.bubble-8 {
    width: 32px;
    height: 32px;
    left: 3%;
    bottom: -50px;
    animation-duration: 9.5s;
    animation-delay: 1.5s;
}

.bubble-9 {
    width: 24px;
    height: 24px;
    left: 12%;
    bottom: -50px;
    animation-duration: 10.8s;
    animation-delay: 3.5s;
}

.bubble-10 {
    width: 26px;
    height: 26px;
    right: 8%;
    bottom: -50px;
    animation-duration: 9.8s;
    animation-delay: 2.5s;
}

.bubble-11 {
    width: 21px;
    height: 21px;
    right: 3%;
    bottom: -50px;
    animation-duration: 11.2s;
    animation-delay: 4.5s;
}

.bubble-12 {
    width: 29px;
    height: 29px;
    right: 12%;
    bottom: -50px;
    animation-duration: 10.2s;
    animation-delay: 6.5s;
}

@keyframes float-up {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) translateX(20px);
        opacity: 0;
    }
}

/* Fish */
.fish {
    position: absolute;
    width: 80px;
    height: 40px;
    color: rgba(255, 107, 107, 0.35);
}

.fish-1 {
    top: 20%;
    left: -100px;
    animation: swim-right 15s linear infinite;
    animation-delay: 0s;
}

.fish-2 {
    top: 50%;
    right: -100px;
    animation: swim-left 18s linear infinite;
    animation-delay: 5s;
    transform: scaleX(-1);
}

.fish-3 {
    top: 70%;
    left: -100px;
    animation: swim-right 20s linear infinite;
    animation-delay: 10s;
}

@keyframes swim-right {
    0% {
        transform: translateX(0) translateY(0);
    }
    50% {
        transform: translateX(50vw) translateY(-20px);
    }
    100% {
        transform: translateX(100vw) translateY(0);
    }
}

@keyframes swim-left {
    0% {
        transform: scaleX(-1) translateX(0) translateY(0);
    }
    50% {
        transform: scaleX(-1) translateX(-50vw) translateY(20px);
    }
    100% {
        transform: scaleX(-1) translateX(-100vw) translateY(0);
    }
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 40px;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Header Styles */
header {
    margin-bottom: 45px;
    padding-bottom: 30px;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.profile-image {
    flex-shrink: 0;
}

.profile-image img {
    width: 180px;
    height: 180px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid #f0f0f0;
}

.header-text {
    flex-grow: 1;
}

.header-text h1 {
    font-size: 2.1em;
    margin-bottom: 12px;
    color: #2a2a2a;
    font-weight: 400;
    letter-spacing: -0.5px;
}

.header-text .title {
    font-size: 1.1em;
    color: #666;
    margin-bottom: 8px;
    font-weight: 350;
}

.header-text .email {
    color: #888;
    margin-bottom: 25px;
    font-weight: 350;
}

/* Social Links */
.social-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    align-items: center;
}

.social-links a {
    color: #666;
    font-size: 1.4em;
    transition: color 0.2s ease;
    text-decoration: none;
}

.social-links a:hover {
    color: #FF6B6B;
}

.social-links .hf-link {
    display: inline-flex;
    align-items: center;
    transition: color 0.2s ease;
}

.social-links .hf-link svg {
    width: 1.3em;
    height: 1.3em;
    vertical-align: middle;
}

.social-links .cv-link {
    font-size: 0.95em;
    padding: 8px 18px;
    background-color: #FF6B6B;
    color: white;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    transition: background-color 0.2s ease;
}

.social-links .cv-link:hover {
    background-color: #E63946;
}

/* Section Styles */
section {
    margin-bottom: 25px;
}

section h2 {
    font-size: 1.8em;
    margin-bottom: 20px;
    color: #E63946;
    font-weight: 400;
    padding-bottom: 8px;
    display: inline-block;
    position: relative;
    cursor: default;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #E63946;
    transition: width 0.3s ease;
}

section h2:hover::after {
    width: 100%;
}

section p {
    margin-bottom: 15px;
    line-height: 1.8;
    font-weight: 350;
}

section p a,
.pub-venue a {
    color: #458e5c;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, color 0.2s ease;
}

section p a:hover,
.pub-venue a:hover {
    color: #4a8c5f;
    border-bottom-color: #5a9e6f;
}

/* Research Interests */
.interests-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.interests-list li {
    padding: 15px 18px;
    background-color: #fafafa;
    border-left: 3px solid #E63946;
    font-weight: 350;
}

/* Publications */
.publications-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.publication {
    display: flex;
    gap: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
}

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

.pub-year {
    font-size: 1.1em;
    font-weight: 400;
    color: #FF6B6B;
    min-width: 60px;
    flex-shrink: 0;
}

.pub-image {
    width: 140px;
    flex-shrink: 0;
    display: flex;
    align-items: flex-start;
}

.pub-image a {
    display: block;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.pub-image a:hover {
    transform: translateY(-2px);
    opacity: 0.85;
}

.pub-image img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    border: 1px solid #f0f0f0;
    object-fit: cover;
    display: block;
}

.pub-content {
    flex-grow: 1;
}

.pub-title {
    font-size: 1.15em;
    margin-bottom: 8px;
    color: #1a1a1a;
    line-height: 1.5;
    font-weight: 450;
}

.pub-authors {
    margin-bottom: 5px;
    color: #4a4a4a;
    font-weight: 400;
}

.pub-authors strong {
    color: #1a1a1a;
    font-weight: 500;
}

.pub-venue {
    margin-bottom: 12px;
    color: #666;
    font-weight: 400;
}

.pub-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.pub-link {
    padding: 4px 14px;
    background-color: transparent;
    color: #FF6B6B;
    text-decoration: none;
    border: 1px solid #FF6B6B;
    border-radius: 4px;
    font-size: 0.9em;
    font-weight: 350;
    transition: all 0.2s ease;
}

.pub-link:hover {
    background-color: #FF6B6B;
    color: white;
}

/* News Section */
.news-list {
    list-style: none;
}

.news-list li {
    padding: 12px 0;
    margin-bottom: 8px;
    border-left: 3px solid #FF6B6B;
    padding-left: 18px;
    font-weight: 350;
}

.news-list li strong {
    color: #2a2a2a;
    margin-right: 10px;
    font-weight: 400;
}

/* Footer */
footer {
    margin-top: 60px;
    padding-top: 25px;
    border-top: 1px solid #e0e0e0;
    text-align: center;
    color: #999;
    font-size: 0.9em;
    font-weight: 350;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 40px 20px;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

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

    .header-text h1 {
        font-size: 2.2em;
    }

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

    section h2 {
        font-size: 1.6em;
    }

    .publication {
        flex-direction: column;
        gap: 10px;
    }

    .pub-year {
        min-width: auto;
    }

    .pub-image {
        width: 100%;
        max-width: 200px;
    }

    .interests-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header-text h1 {
        font-size: 1.8em;
    }

    .header-text .title {
        font-size: 1em;
    }

    section h2 {
        font-size: 1.4em;
    }

    .pub-title {
        font-size: 1.05em;
    }
}