/* Font Faces - Local Aleofont */
@font-face {
    font-family: 'Aleofont';
    src: url('fonts/AleofontSans-Regular.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* Base Styles */
:root {
    /* Colors */
    --ivory: #F5F5F5;
    --coal: #121212;
    --lime: #C4FFC2;
    --lemon: #EEFFA8;
    --pomelo: #FFE092;
    --tangerine: #FFA978;
    --cloudberry: #FFE2FC;
    
    /* Typography */
    --title-font: 'Aleofont', 'Aleo', serif; 
    --body-font: 'Aleofont', sans-serif;
}

body {
    background-color: var(--ivory);
    color: var(--coal);
    margin: 0;
    padding: 0;
    font-family: var(--body-font);
    line-height: 1.5;
}

/* Desktop margins */
@media (min-width: 992px) {
    body {
        margin-left: 50px;
        margin-right: 50px;
    }
}

a {
    color: var(--coal);
    text-decoration: underline;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: var(--tangerine);
}

/* Container Layout */
.research-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    background-color: var(--ivory);
    min-height: auto;
    position: relative;
}

/* Header Styles */
.research-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    padding: 15rem 0 0;
    max-width: 65%;
    position: relative;
    margin-bottom: 0;
}

.research-header .logo {
    margin-bottom: 4rem;
    width: 40px;
    height: auto;
    position: absolute;
    top: 2rem;
    left: 0;
}

.research-header h1 {
    font-family: var(--title-font);
    font-size: 13.125vw;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.research-header h2 {
    font-size: 10.625vw;
    font-weight: 400;
    letter-spacing: -0.03em;
    max-width: 95%;
    margin-top: 0;
    margin-bottom: 4rem;
}


.black-section {
    background-color: var(--coal);
    color: var(--ivory);
    width: 100%;
    position: relative;
    padding-bottom: 0;
    margin-top: 0;
}

.black-section::before {
    content: '';
    position: absolute;
    top: -6rem; /* Height of the step */
    right: 0;
    width: 33.33%; /* One-third of the width */
    height: 6rem;
    background-color: var(--coal);
}

/* Research Papers Section */
.research-papers {
    padding: 2rem 0 2rem;
    position: relative;
    color: var(--ivory);
}


/* Inner container to maintain proper width */
.research-papers-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.research-papers h2 {
    font-family: var(--title-font);
    font-size: 2.8rem;
    margin-bottom: 1rem;
    font-weight: 400;
}

.research-papers h3 {
    font-family: var(--title-font);
    font-size: 1.3rem;
    text-align: right;
    margin: 2rem 0 1.5rem;
    font-weight: 400;
}

.research-papers p {
    color: var(--ivory);
    opacity: 0.9;
}

.papers-grid {
    display: flex;
    flex-direction: column;
    gap: 0rem;
    margin-top: 1rem;
}

/* Paper Cards */
.paper-card {
    background-color: transparent;
    padding: 2rem;
    border-radius: 0;
    border: 2px solid var(--ivory);
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    margin-bottom: 2rem;
    cursor: pointer;
    text-decoration: none;
    color: var(--ivory);
    overflow: hidden;
}

.paper-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Card color variations */
.paper-card:nth-child(7n+1) {
    border-color: var(--lime);
}
.paper-card:nth-child(7n+1):hover {
    background-color: var(--lime);
    color: var(--coal);
}

.paper-card:nth-child(7n+2) {
    border-color: var(--lemon);
}
.paper-card:nth-child(7n+2):hover {
    background-color: var(--lemon);
    color: var(--coal);
}

.paper-card:nth-child(7n+3) {
    border-color: var(--pomelo);
}
.paper-card:nth-child(7n+3):hover {
    background-color: var(--pomelo);
    color: var(--coal);
}

.paper-card:nth-child(7n+4) {
    border-color: var(--tangerine);
}
.paper-card:nth-child(7n+4):hover {
    background-color: var(--tangerine);
    color: var(--coal);
}

.paper-card:nth-child(7n+5) {
    border-color: var(--cloudberry);
}
.paper-card:nth-child(7n+5):hover {
    background-color: var(--cloudberry);
    color: var(--coal);
}

.paper-card:nth-child(7n+6) {
    border-color: var(--lime);
}
.paper-card:nth-child(7n+6):hover {
    background-color: var(--lime);
    color: var(--coal);
}

.paper-card:nth-child(7n+7) {
    border-color: var(--lemon);
}
.paper-card:nth-child(7n+7):hover {
    background-color: var(--lemon);
    color: var(--coal);
}

.paper-card h4 {
    font-family: var(--title-font);
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 1rem;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.paper-card:hover h4, 
.paper-card:hover .paper-authors, 
.paper-card:hover .paper-info p {
    color: var(--coal);
}

.paper-info p {
    font-family: var(--body-font);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0.5rem 0 1.5rem;
    color: rgba(245, 245, 245, 0.8);
}

.paper-authors {
    font-family: var(--body-font);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: rgba(245, 245, 245, 0.7);
}

.paper-actions {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.paper-cta {
    font-family: var(--body-font);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    color: var(--ivory);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: color 0.3s ease;
}

.paper-cta::after {
    content: "";
    display: inline-block;
    width: 18px;
    height: 18px;
    margin-left: 8px;
    background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTgiIGhlaWdodD0iMTgiIHZpZXdCb3g9IjAgMCAxOCAxOCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNOSAwTDcuNDMgMS41NzVMMTMuNjggNy44NzVIMFY5Ljk5SDEzLjY4TDcuNDMgMTYuMjlMOSAxNy44NjVMMTggOC45MzI1TDkgMFoiIGZpbGw9IndoaXRlIi8+PC9zdmc+");
    background-size: contain;
    background-repeat: no-repeat;
    transition: transform 0.3s ease;
}

.paper-card:hover .paper-cta {
    color: var(--coal);
}

.paper-card:hover .paper-cta::after {
    transform: translateX(5px);
    background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTgiIGhlaWdodD0iMTgiIHZpZXdCb3g9IjAgMCAxOCAxOCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNOSAwTDcuNDMgMS41NzVMMTMuNjggNy44NzVIMFY5Ljk5SDEzLjY4TDcuNDMgMTYuMjlMOSAxNy44NjVMMTggOC45MzI1TDkgMFoiIGZpbGw9ImJsYWNrIi8+PC9zdmc+");
}

/* Author Section */
.author-section {
    margin-top: 6rem;
    margin-bottom: 1rem;
    background-color: var(--ivory);
}

.author-section h2 {
    font-family: var(--title-font);
    font-size: 1.8rem;
    margin-bottom: 3rem;
    color: var(--coal);
    font-weight: 400;
}

.author-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin-top: 2rem;
}

.author-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background-color: white;
    border-radius: 0;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
    border: none;
    color: var(--coal);
    height: 100%;
    overflow: hidden;
    max-width: 100%;
    margin-bottom: 2rem;
}

.author-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.author-photo-container {
    width: 100%;
    overflow: hidden;
    height: 100%;
    min-height: 320px;
    max-height: 540px;
}

.author-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    background-color: #f0f0f0;
}

.author-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.author-bio {
    font-family: var(--body-font);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: var(--coal);
}

.author-name {
    font-family: var(--title-font);
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
    color: var(--coal);
}

.author-title {
    font-family: var(--body-font);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--coal);
    margin-bottom: 0;
    font-weight: 400;
    opacity: 0.8;
}

/* Get Involved Section */
.get-involved {
        padding: 3rem 0;
}

.get-involved h2 {
    font-family: var(--title-font);
    font-size: 2.8rem;
    margin-bottom: 1rem;
    font-weight: 400;
    text-align: center;
}

.get-involved p {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.get-involved-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.get-involved-link {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: white;
    padding: 2rem;
    text-decoration: none;
    height: auto;
    min-height: 260px;
    position: relative;
    transition: all 0.3s ease-in-out;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.get-involved-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.get-involved-link:nth-child(1) {
    background-color: white;
}

.get-involved-link:nth-child(1):hover {
    background-color: var(--lime);
}

.get-involved-link:nth-child(2):hover {
    background-color: var(--lemon);
}

.get-involved-link:nth-child(3):hover {
    background-color: var(--pomelo);
}

.get-involved-link-title {
    font-family: var(--title-font);
    font-size: 1.6rem;
    margin-bottom: 1rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

.get-involved-link-description {
    font-size: 0.95rem;
    color: var(--coal);
    line-height: 1.5;
    margin-bottom: 2rem;
    transition: color 0.3s ease;
}

.get-involved-link-cta {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    margin-top: 2rem;
    display: flex;
    align-items: center;
    color: var(--coal);
    transition: color 0.3s ease;
    position: relative;
}

.get-involved-link:hover .get-involved-link-title,
.get-involved-link:hover .get-involved-link-description,
.get-involved-link:hover .get-involved-link-cta {
    color: var(--coal);
}

.get-involved-link-cta::after {
    content: "";
    display: inline-block;
    width: 18px;
    height: 18px;
    background-image: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMTgiIGhlaWdodD0iMTgiIHZpZXdCb3g9IjAgMCAxOCAxOCIgZmlsbD0ibm9uZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNOSAwTDcuNDMgMS41NzVMMTMuNjggNy44NzVIMFY5Ljk5SDEzLjY4TDcuNDMgMTYuMjlMOSAxNy44NjVMMTggOC45MzI1TDkgMFoiIGZpbGw9ImJsYWNrIi8+PC9zdmc+");
    background-size: contain;
    background-repeat: no-repeat;
    margin-left: 8px;
}

/* Make responsive */
@media (max-width: 992px) {
    .get-involved-links {
        grid-template-columns: 1fr 1fr;
        gap: 0;
    }
}

@media (max-width: 768px) {
    .get-involved-links {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .get-involved-link {
        display: flex;
        flex-direction: column;
        min-height: auto;
        height: auto;
        padding: 2rem;
        margin-bottom: 1px;
    }
    
    .get-involved-link-title {
        margin-bottom: 1rem;
    }
    
    .get-involved-link-description {
        margin-bottom: 1.5rem;
    }
    
    .get-involved-link-cta {
        position: static;
        margin-top: 1rem;
        padding-top: 0.5rem;
    }
}

/* Author Section */
.author-card:nth-child(odd) {
    border-top: 4px solid var(--lime);
}

.author-card:nth-child(even) {
    border-top: 4px solid var(--pomelo);
}

/* Responsive styles */
@media (min-width: 768px) {
    .research-header h1 {
        font-size: 3rem;
    }
    
    .research-header h2 {
        font-size: 1.3rem;
    }
}

@media (min-width: 1024px) {
    .research-header h1 {
        font-size: 3.5rem;
    }
    
    .research-header h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 1200px) {
    .author-card {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 992px) {
    .author-grid {
        grid-template-columns: 1fr;
    }
    
    .author-card {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .author-card {
        grid-template-columns: 1fr;
    }
    
    .author-photo-container {
        height: 350px;
    }
}

/* Responsive adjustments for header */
@media (max-width: 992px) {
    .research-header {
        max-width: 80%;
    }
    
    .research-header h1 {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .research-header {
        max-width: 100%;
        padding-top: 4rem;
    }
    
    .research-header h1 {
        font-size: 2.8rem;
    }
    
    .research-header h2 {
        font-size: 1.1rem;
    }
}

/* Research Papers Section */
.research-papers {
    margin-top: 0;
    background-color: var(--coal);
    padding: 4rem 0;
    position: relative;
    color: var(--ivory);
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    box-sizing: border-box;
    margin-top: 6rem; /* Match the step height */
}

/* Footer Styles */
.site-footer {
    padding: 10rem 0 7rem;
    background-color: var(--ivory);
}

.copyright {
    text-align: center;
    font-size: 0.9rem;
    color: var(--coal);
    opacity: 0.7;
    margin: 0;
}

/* Back to Home Link */
.back-to-home {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--coal);
    margin-bottom: 3rem;
    transition: all 0.2s ease;
}

.back-to-home:hover {
    color: var(--coal);
}

.back-to-home:hover .back-arrow {
    transform: translateX(-3px);
    color: var(--coal);
}

.back-to-home:hover .back-text {
    color: var(--coal);
}

.back-arrow {
    font-size: 1.2rem;
    margin-right: 0.5rem;
    transition: transform 0.2s ease, color 0.2s ease;
}

.back-text {
    font-size: 0.9rem;
    margin-left: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 0.2s ease;
}

.research-header .logo {
    width: 40px;
    height: auto;
}

@media (max-width: 768px) {
    .back-to-home {
        margin-top: 1.5rem;
        margin-left: 1rem;
    }
}