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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
    padding-bottom: 80px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1002;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0.6rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-weight: 200;
    background: linear-gradient(90deg, #a566e5 0%, #01feee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1rem;
    font-family:Tahoma;
}

.h2 {
    font-weight: 600;
    color: #1f2937;
    font-size: 1.5rem;
}


.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    background: linear-gradient(135deg, #01feee 0%, #a566e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #01feee 0%, #a566e5 100%);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg,#a566e5 0%,#01feee 100%);
    position: relative;
    color: white;
    padding: 80px 0 80px;
    text-align: center;
    overflow: hidden;
    z-index: 1001;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: shimmer 3s infinite;
    z-index: 1;
}
.logo-image {
    width: 100%;
    max-width: 500px;
    max-height: 500px;
    margin: 0 auto;
    position: relative;
    justify-content: center;
    align-items: center;
}

.logo-image img {
    width: 100%;
    height: auto;
    transition: all 0.3s ease;
    transform-origin: center;
}

.logo-image::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20%;
    height: 20%;
    border: none;
    z-index: 999;
}

.logo-image:hover img {
    transform: scale(1.4);
}

.hero-content:has(.logo-image:hover) .author-info {
    transform: translateX(800px);
    text-align: left;
}

.author-info {
    transition: all 0.3s ease;
}

.logo-image:hover {
}

.hero-content:has(.logo-image:hover) .paper-title {
    transform: translateX(-200px);
    text-align: left;
}

.hero-content:has(.logo-image:hover) .paper-subtitle {
    transform: translateX(-200px);
    text-align: left;
    font-size: 1rem;
}

.paper-title {
    transition: all 0.3s ease;
    font-family:Tahoma;
}

.paper-subtitle {
    transition: all 0.3s ease;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
}

.paper-title {
    font-family: Tahoma;
    font-size: 3.2rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: 0.05em;
    animation: letterSpacingPulse 4s ease-in-out infinite;
}

.paper-subtitle {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    opacity: 0.9;
    font-weight: 300;
}

.author-info {
    margin-bottom: 1.5rem;
}

.authors {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.affiliations {
    font-size: 0.9rem;
    opacity: 0.8;
}

.paper-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    max-width: 800px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 80px 0;
}

.demo-section {
    margin-bottom: 100px;
}

.live-examples-section {
    padding-bottom: 150px;
}

.live-examples-contributions {
    padding-top: 80px;
}

.section-subtitle {
    font-size: 1rem;
    font-weight: 400;
    text-align: center !important;
    margin-bottom: 1.5rem !important;
    margin-top: -2rem !important;
}

.marketing-demo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 3rem;
    margin-top: 10rem;
    width: 100%;
}

.marketing-demo iframe,
.marketing-demo video {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-origin: center;
}

.marketing-demo video {
    will-change: transform;
    position: relative;
}

@media (max-width: 768px) {
    .marketing-demo iframe,
    .marketing-demo video {
        width: 100%;
        height: 250px;
    }
}

.last {
    padding-bottom: 40px !important;
}
.bg-gradient {
    background: linear-gradient(135deg, #01feee 0%, #a566e5 100%) !important;
}

.bg-gradient-light {
    background: linear-gradient(135deg, rgba(165, 102, 229, 0.3) 0%, rgba(1, 254, 238, 0.3) 100%) !important;
}
.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    
}

/* Abstract */
.abstract-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    text-align: justify;
    color: #4b5563;
}

.underlined-text {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* Contributions */
.contributions {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 2rem;
    margin-top: 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    justify-items: center;
}

/* First row: 3 items, each spanning 2 columns */
.contribution-item:nth-child(1) {
    grid-column: 1 / 3;
}

.contribution-item:nth-child(2) {
    grid-column: 3 / 5;
}

.contribution-item:nth-child(3) {
    grid-column: 5 / 7;
}

/* Second row: 2 items centered, each spanning 2 columns with gap in middle */
.contribution-item:nth-child(4) {
    grid-column: 2 / 4;
}

.contribution-item:nth-child(5) {
    grid-column: 4 / 6;
}

.contribution-item {
    width: 100%;
    max-width: 380px;
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contribution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
}

.contribution-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #01feee 0%, #a566e5 100%);
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
}

.contribution-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.contribution-item p {
    color: #6b7280;
    line-height: 1.6;
}

/* Examples List (Vertical Large Images) */
.examples-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 2rem;
}

.example-row {
    background: linear-gradient(135deg, rgba(165, 102, 229, 0.3) 0%, rgba(1, 254, 238, 0.3) 100%);
    border-radius: 1rem;
    box-shadow: 0 4px 16px -2px rgba(0,0,0,0.07);
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 700px;
    margin: 0 auto;
}

.example-image-large {
    width: 100%;
    max-width: 700px;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
}

.example-image-large img {
    width: 100%;
    height: auto;
    border-radius: 0.75rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    object-fit: contain;
    background: #f3f4f6;
}

.example-content-large {
    text-align: center;
}

.example-content-large h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 0.7rem;
    color: #1f2937;
}

.example-content-large p {
    color: #4b5563;
    font-size: 1.08rem;
    line-height: 1.7;
}

@media (max-width: 900px) {
    .example-row {
        padding: 1.5rem 0.5rem;
    }
    .example-image-large {
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .example-row {
        padding: 1rem 0.2rem;
    }
    .example-image-large {
        max-width: 100%;
    }
    .example-content-large h3 {
        font-size: 1.1rem;
    }
    .example-content-large p {
        font-size: 0.98rem;
    }
}

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

.detail-block {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.citation-text {
    margin: 1rem 0;
    padding-left: 4rem;
}

.citation-step-text {
    font-weight: 700 !important;
}

.installation-steps {
    max-width: 800px;
    margin: 0 auto;
}

.installation-step {
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.installation-step.animate-in {
    opacity: 1;
    transform: translateY(0);
}


/* Future Work specific styling */
.future-work-list {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 2rem;
    width: 950px;
    margin: 0 auto;
}

.future-work-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.future-work-list li {
    padding: 0.8rem 0;
    margin-left: 2rem;
    text-align: left;
    color: #4b5563;
    font-size: 1rem;
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease;
    list-style-type: disc;
    display: list-item;
}

.future-work-list li.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.detail-block h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1f2937;
}

.detail-block p {
    color: #6b7280;
    line-height: 1.7;
}

/* Citation */
.citation-box {
    background: #1f2937;
    border-radius: 1rem;
    padding: 2rem;
    position: relative;
    max-width: 680px;
    margin: 0 auto;
}

.citation-content code {
    color: #e5e7eb;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    display: block;
}

.copy-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #374151;
    color: #e5e7eb;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.copy-btn:hover {
    background: #4b5563;
}

/* Footer */
.footer {
    background: linear-gradient(90deg, rgba(165, 102, 229, 0.3) 0%, rgba(1, 254, 238, 0.3) 100%);
    position: fixed;
    bottom: 0;
    width: 100%;
    color: #333;
    text-align: center;
    padding: 0.75rem 0;
    overflow: hidden;
    z-index: 1000;
    transition: all 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.footer.at-bottom {
    background: linear-gradient(90deg, #a566e5 0%, #01feee 100%);
    color: #fff;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 3s infinite;
    z-index: 1;
}

.footer > * {
    position: relative;
    z-index: 2;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .paper-title {
        font-size: 2rem;
    }
    
    .paper-subtitle {
        font-size: 1rem;
    }
    
    .paper-links {
        flex-direction: column;
        align-items: center;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contributions,
    .examples-list,
    .details-content {
        grid-template-columns: 1fr;
    }
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@keyframes letterSpacingPulse {
    0% {
        letter-spacing: 0.05em;
    }
    50% {
        letter-spacing: 0.15em;
    }
    100% {
        letter-spacing: 0.05em;
    }
}

.section > * {
    animation: fadeInUp 0.6s ease-out;
}

/* ICCC Conference Badge */
.conference-badge {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}
.iccc-badge-link {
    text-decoration: none;
}
.iccc-badge {
    display: inline-block;
    background: linear-gradient(90deg, #a566e5 0%, #01feee 100%);
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 0.7rem 1.5rem;
    border-radius: 2rem;
    box-shadow: 0 2px 8px rgba(102,126,234,0.10);
    text-align: center;
    letter-spacing: 0.01em;
    transition: background 0.2s;
}
.iccc-badge:hover {
    background: linear-gradient(90deg, #a566e5 0%, #01feee 100%);
    color: #fff;
}
.iccc-sub {
    display: block;
    font-size: 0.95rem;
    font-weight: 400;
    opacity: 0.92;
    margin-top: 0.2rem;
}

.btn-presentation {
    background: linear-gradient(90deg, #a566e5 0%, #01feee 100%);
    color: #fff;
    border: none;
    transition: background 0.2s;
}
.btn-presentation:hover {
    background: linear-gradient(90deg, #01feee 0%, #a566e5 100%);
    color: #fff;
}

/* Abstract Mobile Fix */
@media (max-width: 600px) {
    .abstract-content p {
        word-break: normal;
        text-align: left;
        max-width: 100%;
        margin: 0;
        font-size: 1.02rem;
        line-height: 1.7;
    }
}

/* Bigger Polaroid Photo Style */
.retro-portrait {
    width: 300px;
    margin: 15px auto;
    background: linear-gradient(135deg, rgba(165, 102, 229, 0.3) 0%, rgba(1, 254, 238, 0.3) 100%) !important;
    border-radius: 4px;
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.15),
        0 8px 16px rgba(0, 0, 0, 0.1),
        0 0 1px rgba(0, 0, 0, 0.1);
    padding: 10px;
    position: relative;
    overflow: visible;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Hover effect on Live Examples cards only when no card is expanded */
#live-examples .contribution-item:hover:not(.expanded) {
    transform: scale(1.5) !important;
    z-index: 999 !important;
    position: relative !important;
    transform-origin: center center !important;
    transition: all 0.3s ease !important;
}

#live-examples .contribution-item:hover:not(.expanded) .retro-portrait {
    transform: scale(1.2) !important;
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.25),
        0 16px 35px rgba(0, 0, 0, 0.15) !important;
}

#live-examples .contribution-item:hover:not(.expanded) h3 {
    font-size: 1.2rem !important;
    margin-top: 25px !important;
}

#live-examples .contribution-item:hover:not(.expanded) p {
    font-size: 1rem !important;
    line-height: 1.4 !important;
}

/* When any live examples card is expanded, only show subtle movement on hover for other live examples cards */
body:has(#live-examples .contribution-item.expanded) #live-examples .contribution-item:not(.expanded):hover {
    transform: scale(1.05) rotate(1deg) !important;
    transition: all 0.3s ease !important;
}

body:has(#live-examples .contribution-item.expanded) #live-examples .contribution-item:not(.expanded):hover .retro-portrait {
    transform: scale(1.05);
    box-shadow: 
        0 2px 8px rgba(0, 0, 0, 0.15),
        0 8px 16px rgba(0, 0, 0, 0.1),
        0 0 1px rgba(0, 0, 0, 0.1);
}

/* Disable hover on expanded live examples card itself */
#live-examples .contribution-item.expanded:hover {
    transform: scale(1.5) !important; /* Keep expanded scale */
}


/* Bottom white space characteristic of Polaroid */
.retro-portrait::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 0px;
    background: #ffffff;
    border-radius: 0 0 4px 4px;
}

/* Staggered two-row layout with animations */
.contributions {
    position: relative;
}


/* Expanded card styles - only for Live Examples */
#live-examples .contribution-item.expanded {
    z-index: 1000 !important;
}

#live-examples .contribution-item.expanded .retro-portrait {
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.25),
        0 16px 35px rgba(0, 0, 0, 0.15);
    transform: scale(1.2);
    margin: 20px auto;
    padding: 10px 2px;
}

#live-examples .contribution-item.expanded h3 {
    font-size: 1.2rem;
    margin-top: 40px;
}

#live-examples .contribution-item.expanded p {
    font-size: 1rem;
    line-height: 1.4;
}

.contribution-item:nth-child(1),
.contribution-item:nth-child(2),
.contribution-item:nth-child(3) {
    margin-top: 0;
}

.contribution-item:nth-child(4),
.contribution-item:nth-child(5),
.contribution-item:nth-child(6) {
    margin-top: 40px;
}


.retro-portrait video {
    width: 100%;
    height: 170px;
    object-fit: cover;
    border-radius: 2px;
    background: #f0f0f0;
    display: block;
    cursor: pointer;
}

/* Mobile responsive for bigger polaroids */
@media (max-width: 768px) {
    .retro-portrait {
        width: 160px;
        height: 200px;
        padding: 12px 12px 35px 12px;
    }
    
    .retro-portrait video {
        height: 120px;
    }
    
    .retro-portrait::after {
        height: 35px;
    }
}

@media (max-width: 480px) {
    .retro-portrait {
        width: 140px;
        height: 180px;
        padding: 10px 10px 30px 10px;
    }
    
    .retro-portrait video {
        height: 105px;
    }
    
    .retro-portrait::after {
        height: 30px;
    }
}