/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header styles */
.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    width: 180px;
    height: 40px;
    margin: 0;
    display: flex;
    align-items: center;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

/* Hero section */
.hero {
    padding: 8rem 2rem 4rem;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.hero::before,
.hero::after,
.hero .decoration-1,
.hero .decoration-2 {
    content: '';
    position: absolute;
    z-index: 0;
    pointer-events: none;
}

.hero::before,
.hero::after,
.hero .decoration-1,
.hero .decoration-2,
.hero .decoration-3,
.hero .decoration-4,
.hero .decoration-5 {
    content: '';
    position: absolute;
    z-index: 0;
}

.hero::before,
.hero::after {
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(24, 103, 174, 0.15), rgba(193, 136, 82, 0.15));
    filter: blur(60px);
}

.hero::before {
    top: -200px;
    left: -100px;
    animation: gentle-float 20s ease-in-out infinite;
}

.hero::after {
    bottom: -200px;
    right: -100px;
    animation: gentle-float 25s ease-in-out infinite reverse;
}

.hero .decoration-1 {
    width: 120px;
    height: 120px;
    background: linear-gradient(45deg, rgba(52, 152, 219, 0.2), rgba(52, 152, 219, 0.1));
    top: 15%;
    left: 10%;
    border-radius: 40%;
    animation: soft-spin 30s linear infinite;
}

.hero .decoration-2 {
    width: 100px;
    height: 100px;
    background: linear-gradient(45deg, rgba(241, 196, 15, 0.18), rgba(241, 196, 15, 0.1));
    bottom: 20%;
    right: 15%;
    border-radius: 40%;
    animation: gentle-float 15s ease-in-out infinite;
}

.hero .decoration-3 {
    width: 150px;
    height: 150px;
    border: 2px solid rgba(46, 204, 113, 0.2);
    top: 15%;
    right: 15%;
    border-radius: 50%;
    animation: expand 20s ease-in-out infinite;
}

.hero .decoration-4 {
    width: 150px;
    height: 150px;
    border: 2px solid rgba(155, 89, 182, 0.2);
    bottom: 10%;
    left: 8%;
    border-radius: 50%;
    animation: expand 25s ease-in-out infinite;
}

.hero .decoration-5 {
    width: 100px;
    height: 100px;
    background: linear-gradient(225deg, rgba(231, 76, 60, 0.12), rgba(231, 76, 60, 0.06));
    bottom: 25%;
    left: 20%;
    border-radius: 60% 40% 30% 70%;
    animation: soft-spin 20s linear infinite reverse;
}

@keyframes gentle-float {
    0% { transform: translate(0, 0); }
    50% { transform: translate(20px, 20px); }
    100% { transform: translate(0, 0); }
}

@keyframes soft-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes expand {
    0% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.3; }
    100% { transform: scale(1); opacity: 0.5; }
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.hero h1 span.gpumd {
    color: #1867AE;
}

.hero h1 span.kit {
    color: #C18852;
}

.hero h2 {
    font-size: 1.5rem;
    color: #34495e;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.hero p {
    max-width: 800px;
    margin: 0 auto 2rem;
    font-size: 1.2rem;
    position: relative;
    z-index: 1;
}

/* Join Us section */
.join-and-citation {
    padding: 4rem 2rem;
    background-color: #f8f9fa;
}

.join-citation-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 2rem 0;
}

.join-citation-card {
    background: #fff;
    border-radius: 10px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    min-height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.join-citation-card:hover {
    transform: translateY(-5px);
}

.join-citation-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.join-citation-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.join-us-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 0.6rem 1.2rem;
    background-color: #1867AE;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    width: fit-content;
    margin: 0 auto;
}

.join-us-button:hover {
    background-color: #145a96;
}

.github-star-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background-color: #24292e;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    width: fit-content;
    margin: 0 auto;
}

.github-star-button:hover {
    background-color: #1b1f23;
}

.github-star-button svg {
    fill: currentColor;
}

/* Section headers */
section h2 {
    font-size: 2.5rem;
    color: #2c3e50;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #3498db;
    border-radius: 3px;
}

/* Button styles */
.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.2);
}

.cta-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.3);
}

/* Features section */
.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

/* Quick start section */
.quick-start {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 6rem 2rem;
    text-align: center;
}

.quick-start-content {
    max-width: 1000px;
    margin: 0 auto;
}

.code-block {
    background: #1a2634;
    color: #e6e6e6;
    padding: 3rem 2rem 2rem;
    border-radius: 12px;
    max-width: 800px;
    margin: 2.5rem auto;
    position: relative;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.code-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: #2c3e50;
    border-radius: 12px 12px 0 0;
}

.code-block::after {
    content: '•••';
    position: absolute;
    top: 0;
    left: 20px;
    height: 40px;
    display: flex;
    align-items: center;
    color: #e6e6e6;
    font-size: 24px;
    letter-spacing: 2px;
}

.code-block pre {
    margin: 0;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 1rem;
    line-height: 1.6;
    text-align: left;
}

.code-block code {
    color: #a8b6c7;
}

.quick-start .buttons-container {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.github-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background-color: #24292e;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
}

.github-button:hover {
    background-color: #1a1e21;
    transform: translateY(-2px);
}

/* Gallery section */
.gallery {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-grid {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    padding: 1.5rem;
    position: relative;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.gallery-grid-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(52, 152, 219, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    z-index: 2;
    border: none;
    transition: all 0.3s ease;
}

.gallery-arrow:hover {
    background: rgba(41, 128, 185, 1);
}

.gallery-arrow.prev {
    left: 10px;
}

.gallery-arrow.next {
    right: 10px;
}

.gallery-grid::-webkit-scrollbar {
    height: 8px;
}

.gallery-grid::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.gallery-grid::-webkit-scrollbar-thumb {
    background: #3498db;
    border-radius: 4px;
}

.gallery-item {
    flex-shrink: 0;
    scroll-snap-align: start;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: all 0.3s;
    position: relative;
}

.gallery-item:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 25px rgba(0,0,0,0.12);
}

.gallery-item img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    display: block;
    border-radius: 8px 8px 0 0;
    background-color: #ffffff;
    padding: 1rem;
}

.gallery-item p {
    padding: 1.2rem;
    text-align: center;
    font-weight: 600;
    color: #2c3e50;
    font-size: 1.1rem;
    margin: 0;
    background: white;
}

/* Documentation section */
.documentation {
    padding: 6rem 2rem;
    background-color: #f8f9fa;
}

.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 2rem auto 0;
    position: relative;
    z-index: 1;
}

.documentation {
    padding: 6rem 2rem;
    background-color: #f8f9fa;
    position: relative;
    overflow: hidden;
}

.documentation::before,
.documentation::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}

.documentation::before {
    background: linear-gradient(135deg, rgba(24, 103, 174, 0.08), rgba(193, 136, 82, 0.08));
    filter: blur(60px);
    top: -100px;
    right: -100px;
    animation: gentle-float 25s ease-in-out infinite;
}

.documentation::after {
    background: linear-gradient(225deg, rgba(24, 103, 174, 0.06), rgba(193, 136, 82, 0.06));
    filter: blur(60px);
    bottom: -100px;
    left: -100px;
    animation: gentle-float 30s ease-in-out infinite reverse;
}

.doc-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
    position: relative;
    min-height: 240px;
    display: flex;
    flex-direction: column;
}

.doc-card:hover {
    transform: translateY(-5px);
}

.doc-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.doc-card p {
    color: #666;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.doc-card .doc-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: absolute;
    bottom: 2rem;
    left: 2rem;
}

.doc-card .doc-link:hover {
    color: #2980b9;
}

/* Publications section */
.publications {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.publication-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.publication-card {
    background: white;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    width: 450px;
    max-width: 90%;
    margin: 0 auto;
}

.publication-card:hover {
    transform: translateY(-5px);
}

.publication-card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.publication-card .authors {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.publication-card .journal {
    color: #3498db;
    font-weight: 500;
    margin-bottom: 1rem;
}

.publication-card .read-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: #3498db;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s;
    margin-top: 0.8rem;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.2);
    align-self: center;
}

.publication-card .read-button:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.3);
}

/* View all button styles */
.view-all-container {
    text-align: center;
    margin-top: 3rem;
}

.view-all-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: transparent;
    color: #3498db;
    text-decoration: none;
    border: 2px solid #3498db;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
}

.view-all-button:hover {
    background-color: #3498db;
    color: white;
    transform: translateY(-2px);
}

/* Download button icon styles */
.cta-button svg {
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* Footer */
.footer {
    background-color: #1a2634;
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 2rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column:last-child ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.1rem;
}

.footer-column h4 {
    color: #fff;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 30px;
    height: 2px;
    background: #3498db;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-column ul li a:hover {
    color: #3498db;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.site-stats {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: center !important;
}

.site-stats span {
    margin: 0 0.5rem;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-column {
        text-align: center;
    }
    
    .footer-column h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .nav {
        flex-direction: row;
        gap: 1rem;
        padding: 0.8rem 1rem;
    }
    
    .nav-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: flex-end;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }

    section h2 {
        font-size: 2rem;
    }

    .quick-start .buttons-container {
        flex-direction: column;
        align-items: center;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .gallery-item img {
        height: 180px;
    }
}