body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0A0E27;
    color: #e0e0e0;
}

.profile-picture {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    aspect-ratio: 1/1;
    /* Ensure a square aspect ratio */
    margin-bottom: 1rem;
    border: 3px solid #0052CC;
    /* Animation 2: Subtle Entrance Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 0.8s ease-out forwards;
    animation-delay: 0.2s;
    cursor: zoom-in;
    /* Indicate it's clickable */
    transition: all 0.3s ease-in-out;
    /* Smooth transition for enlargement */
}

/* Lightbox styles */
.lightbox {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    cursor: zoom-out;
}

.lightbox img {
    max-width: 90vw;
    max-height: 90vh;
    background-color: #fff;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}

/* Overlay for enlarged image */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    /* Dark semi-transparent background */
    z-index: 999;
    /* Behind the enlarged image */
    display: none;
    /* Hidden by default */
}

.overlay.active {
    display: block;
    /* Show when active */
}

header {
    background-color: #1f1f1f;
    color: #fff;
    padding: 2rem 0;
    border-bottom: 1px solid #333;
}

.header-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.profile-container {
    display: flex;
    align-items: center;
    text-align: left;
    width: 100%;
    justify-content: flex-start;
}

.profile-picture {
    margin-right: 3rem;
}

.header-text {
    text-align: left;
    margin-left: 2rem;
}

.header-text h1 {
    margin: 0;
    font-size: 2.5rem;
    /* Animation 2: Subtle Entrance Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 0.8s ease-out forwards;
    animation-delay: 0.4s;
}

.header-text .job-title {
    margin: 0;
    font-size: 1.5rem;
    color: #0052CC;
    /* Animation 2: Subtle Entrance Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 0.8s ease-out forwards;
    animation-delay: 0.6s;
}

.header-text .welcome-message {
    margin-top: 1rem;
    font-size: 1.1rem;
    /* Animation 2: Subtle Entrance Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 0.8s ease-out forwards;
    animation-delay: 0.8s;
}

.social-links-bottom {
    display: flex;
    justify-content: flex-end;
    margin-top: 1.5rem;
    width: 100%;
    gap: 0.25rem;
    /* Same as footer buttons */
}

.social-links-bottom .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    /* Smaller fixed width for square button */
    height: 2rem;
    /* Smaller fixed height for square button */
    padding: 0;
    /* Remove padding to center icon */
    margin: 0 0.5rem;
    /* Animation 2: Subtle Entrance Animation */
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInSlideUp 0.8s ease-out forwards;
    animation-delay: 1s;
    /* Stagger delay */
}

.social-links-bottom .btn i {
    font-size: 1.2rem;
    /* Explicit font size for icon */
    margin: 0;
    /* Remove any default icon margin */
}

@keyframes fadeInSlideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Hero Section Styles */
#hero-section {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    overflow: hidden;
    background: linear-gradient(135deg, #0A0E27 0%, #1a1347 50%, #0A0E27 100%);
}

.hero-container {
    max-width: 1200px;
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-headline {
    font-size: 3.5rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 0 30px rgba(0, 82, 204, 0.5), 0 0 60px rgba(0, 82, 204, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: #b8b8d1;
    max-width: 800px;
    margin: 0 auto 3rem auto;
    line-height: 1.6;
    animation: fadeInUp 1.2s ease-out;
}

/* Impact Metrics */
.impact-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin: 3rem 0;
    animation: fadeInUp 1.4s ease-out;
}

.metric-card {
    background: rgba(0, 82, 204, 0.1);
    border: 2px solid rgba(0, 82, 204, 0.3);
    border-radius: 16px;
    padding: 2rem 1rem;
    transition: all 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-10px);
    border-color: #0052CC;
    box-shadow: 0 10px 30px rgba(0, 82, 204, 0.3);
}

.metric-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: #00D9FF;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 1rem;
    color: #b8b8d1;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Hero CTA */
.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 3rem;
    animation: fadeInUp 1.6s ease-out;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #0052CC;
    color: #fff !important;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 8px 20px rgba(0, 82, 204, 0.4);
    text-align: center;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 82, 204, 0.6);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: #0052CC !important;
    border: 2px solid #0052CC;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
}

.btn-secondary:hover {
    background: rgba(0, 82, 204, 0.1);
    transform: translateY(-3px);
}

/* Animated Background Particles */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: #0052CC;
    border-radius: 50%;
    opacity: 0.6;
    animation: float 20s infinite;
}

.particle:nth-child(1) {
    left: 10%;
    top: 20%;
    animation-delay: 0s;
    animation-duration: 15s;
}

.particle:nth-child(2) {
    left: 80%;
    top: 40%;
    animation-delay: 2s;
    animation-duration: 18s;
}

.particle:nth-child(3) {
    left: 30%;
    top: 70%;
    animation-delay: 4s;
    animation-duration: 22s;
}

.particle:nth-child(4) {
    left: 70%;
    top: 10%;
    animation-delay: 1s;
    animation-duration: 16s;
}

.particle:nth-child(5) {
    left: 50%;
    top: 50%;
    animation-delay: 3s;
    animation-duration: 20s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0.6;
    }

    25% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.8;
    }

    50% {
        transform: translateY(-200px) translateX(-50px);
        opacity: 0.4;
    }

    75% {
        transform: translateY(-100px) translateX(100px);
        opacity: 0.7;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    #hero-section {
        padding: 3rem 1rem;
        min-height: auto;
    }

    .hero-container {
        padding: 0;
        max-width: 100%;
    }

    .hero-headline {
        font-size: 1.8rem;
        padding: 0 0.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 0.5rem;
        margin-bottom: 2rem;
    }

    .impact-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
        padding: 0;
        margin: 2rem 0;
        width: 100%;
    }

    .metric-card {
        padding: 1.25rem 0.5rem;
        min-width: 0;
        box-sizing: border-box;
    }

    .metric-number {
        font-size: 2rem;
    }

    .metric-label {
        font-size: 0.8rem;
    }

    .hero-cta {
        flex-direction: column;
        gap: 1rem;
        padding: 0 1rem;
        width: 100%;
        box-sizing: border-box;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
}

/* Animation 1: Scroll-triggered Fade-in styles */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}


#contact {
    background-color: #1e1e1e;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    border: 1px solid #333;
    transition: transform 0.3s ease;
}

#contact:hover {
    transform: translateY(-5px);
    /* Animation 3: Enhanced Hover Effects */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.project,
.research-paper {
    background-color: #1e1e1e;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    border: 1px solid #333;
    transition: transform 0.3s ease;
    text-align: center;
}

.project:hover,
.research-paper:hover {
    transform: translateY(-5px);
    /* Animation 3: Enhanced Hover Effects */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.project h3,
.research-paper h3 {
    margin-top: 0;
    color: #0052CC;
    text-align: center;
}

#skills .skills-row {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 1rem;
}

#skills .skill-column {
    background-color: #1e1e1e;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #333;
    flex: 1 1 calc(20% - 1rem);
    /* Distribute 5 items evenly with gap */
    min-width: 180px;
    /* Minimum width to prevent excessive shrinking */
    transition: transform 0.3s ease;
}

#skills .skill-column:hover {
    transform: translateY(-5px);
    /* Animation 3: Enhanced Hover Effects */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

#skills .skill-column h3 {
    color: #0052CC;
    margin-top: 0;
    text-align: center;
}

#skills .skill-column ul {
    list-style: none;
    padding: 0;
}

#skills .skill-column ul li {
    margin-bottom: 0.5rem;
    text-align: center;
}

#projects h2,
#research h2,
#skills h2,
#contact h2,
#learning-roadmap h2 {
    margin-top: 0;
    text-align: center;
}

.view-all-btn-container {
    width: 100%;
    text-align: center;
}

.view-all-btn-container .btn {
    display: block;
    margin: 1.5rem auto;
    /* Add some vertical margin for spacing */
    width: fit-content;
    /* Make the block element only as wide as its content */
}

/* Category Container Styles */
.category-container {
    background-color: #1a1a1a;
    border: 2px solid #333;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-container:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(3, 218, 198, 0.2);
}

.category-title {
    color: #0052CC;
    text-align: center;
    margin-top: 0;
    margin-bottom: 2rem;
    font-size: 2rem;
    border-bottom: 2px solid #0052CC;
    padding-bottom: 1rem;
}

@media (max-width: 768px) {
    .category-container {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }

    .category-title {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }
}

/* Tech Showcase within My Expertise */
.tech-showcase-divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, #0052CC, transparent);
    margin: 2.5rem 0 2rem 0;
}

.tech-showcase-title {
    color: #0052CC;
    text-align: center;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.tech-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    padding: 1rem 0;
}

.tech-icons img {
    width: 50px;
    height: 50px;
    transition: transform 0.3s ease, filter 0.3s ease;
    filter: grayscale(20%);
}

.tech-icons img:hover {
    transform: scale(1.2) rotate(5deg);
    filter: grayscale(0%) drop-shadow(0 0 10px rgba(3, 218, 198, 0.5));
}

@media (max-width: 768px) {
    .tech-icons img {
        width: 40px;
        height: 40px;
    }

    .tech-showcase-title {
        font-size: 1.1rem;
    }
}

/* Enhanced Card Hover Effects */
.project:hover,
.research-paper:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 82, 204, 0.2);
    border-color: #0052CC;
}

/* Contact CTA Section */
#contact-cta {
    background: linear-gradient(135deg, #1a1347 0%, #0A0E27 100%);
    padding: 5rem 2rem;
    margin: 4rem 0 0 0;
}

.cta-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.cta-headline {
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.2rem;
    color: #b8b8d1;
    margin-bottom: 3rem;
}

.cta-quick-contact {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-large {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
}

@media (max-width: 768px) {
    .cta-headline {
        font-size: 1.8rem;
    }

    .cta-subtitle {
        font-size: 1rem;
    }

    .cta-quick-contact {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
    }
}

/* Enhanced View All Button Styling */
.view-all-btn-container .btn {
    background: #0052CC;
    box-shadow: 0 4px 8px rgba(0, 82, 204, 0.3);
    font-size: 1.1rem;
    padding: 0.75rem 2rem;
}

.view-all-btn-container .btn:hover {
    box-shadow: 0 6px 12px rgba(0, 82, 204, 0.5);
    transform: translateY(-2px);
}

/* Scroll-triggered fade-in for category containers */
.category-container {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.category-container.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Quote Section Enhancement */
#quote-section {
    background: linear-gradient(135deg, #1e1e1e 0%, #2a2a2a 100%);
    border: 2px solid #0052CC;
    box-shadow: 0 0 20px rgba(3, 218, 198, 0.3);
}

#learning-roadmap .roadmap-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 1rem;
}

#learning-roadmap .roadmap-item {
    background-color: #1e1e1e;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #333;
    flex: 1;
    min-width: 250px;
    /* Adjust as needed */
    transition: transform 0.3s ease;
}

#learning-roadmap .roadmap-item:hover {
    transform: translateY(-5px);
    /* Animation 3: Enhanced Hover Effects */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

#learning-roadmap .roadmap-item h3 {
    color: #0052CC;
    margin-top: 0;
    text-align: center;
}

#learning-roadmap .roadmap-item ul {
    list-style: none;
    padding: 0;
}

#learning-roadmap .roadmap-item ul li {
    margin-bottom: 0.5rem;
    text-align: center;
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: center;
        padding: 0 1rem;
    }

    .profile-container {
        flex-direction: column;
        text-align: center;
        margin-bottom: 1rem;
    }

    .profile-picture {
        margin-right: 0;
        /* Reset margin for mobile */
        margin-bottom: 1rem;
    }

    .header-text {
        text-align: center;
        margin-left: 0;
        /* Reset margin for mobile */
    }

    .header-text h1 {
        font-size: 2rem;
    }

    .header-text .job-title {
        font-size: 1.2rem;
    }

    .header-text .welcome-message {
        font-size: 1rem;
    }

    .social-links-bottom {
        justify-content: center;
        flex-wrap: wrap;
    }

    .social-links-bottom .btn {
        margin: 0.5rem 0.5rem;
    }

    .project .btn,
    .research-paper .btn {
        margin-bottom: 0.5rem;
    }

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

    /* Quote Section Mobile Styles */
    #quote-section {
        margin: 2rem;
        /* 2rem for mobile */
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    background-color: #0052CC;
    color: #121212 !important;
    /* Ensure button text is black */
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.1s ease;
    /* Animation 4: Button Press Feedback */
}

.btn:hover {
    background-color: #0052CC;
}

/* Animation 4: Button Press Feedback */
.btn:active {
    transform: scale(0.98);
}

#contact form {
    display: flex;
    flex-direction: column;
    max-width: 500px;
    /* Adjust as needed */
    margin: 0;
}

@media (min-width: 769px) {
    #contact form {
        margin: 0 auto;
    }

    /* Quote Section PC Styles */
    #quote-section {
        margin: 2rem auto;
        /* 2rem auto for PC */
        max-width: 700px;
        /* Narrower for PC */
    }
}

#contact input,
#contact textarea {
    background-color: #1e1e1e;
    border: 1px solid #333;
    color: #e0e0e0;
    padding: 0.8rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    /* Animation 5: Form Input Focus Animation */
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Animation 5: Form Input Focus Animation */
#contact input:focus,
#contact textarea:focus {
    border-color: #03dac6;
    box-shadow: 0 0 0 3px rgba(3, 218, 198, 0.5);
    outline: none;
    /* Remove default outline */
}

#contact button {
    cursor: pointer;
    max-width: 200px;
    /* Adjust as needed */
    margin: 0 auto;
    /* Center the button */
}

.btn i {
    margin-right: 0.5rem;
}

footer {
    background-color: #1f1f1f;
    color: #fff;
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid #333;
    margin-top: 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background-color: #0052CC;
    color: #121212;
    text-decoration: none;
    border-radius: 50%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(3, 218, 198, 0.3);
}

.footer-links a:hover {
    background-color: #0052CC;
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 6px 16px rgba(3, 218, 198, 0.5);
}

.footer-links a i {
    font-size: 1.3rem;
    margin: 0;
}

footer .download-btn {
    margin-bottom: 1rem;
}

footer .titles {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    color: #e0e0e0;
}

footer .copyright {
    font-size: 0.9rem;
    color: #aaa;
}

#tech-showcase {
    text-align: center;
    padding: 2rem;
    margin: 0 2rem;
}

#tech-showcase .download-btn {
    margin-bottom: 2rem;
}

.tech-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
}

.tech-icons img {
    width: 40px;
    height: 40px;
    margin: 10px;
    /* Add margin back for spacing */
}

.tech-icons i {
    font-size: 3rem;
    color: #0052CC;
    transition: transform 0.3s ease;
}

.tech-icons i:hover {
    transform: scale(1.2);
}

@media (max-width: 768px) {
    .tech-icons img {
        /* Calculate flex-basis for 5 columns with 1.5rem gap */
        /* (100% - (4 * 1.5rem)) / 5 = (100% - 6rem) / 5 */
        flex-basis: calc((100% - 6rem) / 5);
        max-width: 100%;
        /* Ensure it doesn't overflow its flex-basis */
        height: auto;
        box-sizing: border-box;
        /* Include padding and border in the element's total width and height */
        margin: 0;
        /* Remove individual margins, gap handles spacing */
    }

    .tech-icons {
        padding: 0;
        /* Remove padding that might affect calc */
    }

    .tech-icons i {
        font-size: 2rem;
    }

    .header-container {
        flex-direction: column;
        align-items: center;
        padding: 0 1rem;
    }

    .profile-container {
        flex-direction: column;
        text-align: center;
        margin-bottom: 1rem;
    }

    .profile-picture {
        margin-right: 0;
        /* Reset margin for mobile */
        margin-bottom: 1rem;
    }

    .header-text {
        text-align: center;
        margin-left: 0;
        /* Reset margin for mobile */
    }

    .header-text h1 {
        font-size: 2rem;
    }

    .header-text .job-title {
        font-size: 1.2rem;
    }

    .header-text .welcome-message {
        font-size: 1rem;
    }

    .social-links-bottom {
        justify-content: center;
        flex-wrap: wrap;
    }

    .social-links-bottom .btn {
        margin: 0.5rem 0.5rem;
    }

    .project .btn,
    .research-paper .btn {
        margin-bottom: 0.5rem;
    }

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

    /* Quote Section Mobile Styles */
    #quote-section {
        margin: 2rem;
        /* 2rem for mobile */
    }

    /* Disable fade-in animation on mobile */
    .fade-in-section {
        opacity: 1 !important;
        transform: translateY(0) !important;
        transition: none !important;
    }
}

/* Quote Section Styles */
#quote-section {
    background-color: #1e1e1e;
    padding: 1rem 0.5rem;
    border-radius: 8px;
    border: 1px solid #333;
    text-align: center;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.quote-container {
    max-width: 600px;
    margin: 0 auto;
}

.quote-text {
    font-family: 'Playfair Display', serif;
    /* Unique font */
    font-size: 1.8rem;
    color: #0052CC;
    /* Matching website's color theme */
    margin-bottom: 1rem;
    position: relative;
    padding: 0;
    /* Remove padding that was for pseudo-elements */
}

.quote-author {
    font-size: 1.1rem;
    color: #888;
    /* Different shade of text color */
}

/* Styling for links within project and research detail sections */
#project-details a,
#research-details a {
    color: #0052CC;
    /* Accent color for links */
    text-decoration: none;
    /* Remove underline by default */
    transition: color 0.3s ease;
}

#project-details a:hover,
#research-details a:hover {
    color: #018786;
    /* Slightly darker accent on hover */
    text-decoration: underline;
    /* Add underline on hover for better UX */
}

/* Grid layout for projects and research papers */
.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.card-header-image {
    height: 200px;
    /* Adjust as needed */
    margin-bottom: 1rem;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
}

.card-header-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    cursor: zoom-in;
}

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

/* Ensure button elements match anchor buttons exactly */
button.btn {
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

/* AI Chat Modal Styles */
.ai-chat-modal {
    display: none;
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.8);
}

.ai-chat-modal-content {
    background-color: #1e1e1e;
    margin: 5% auto;
    padding: 2rem;
    border: 1px solid #03dac6;
    border-radius: 8px;
    width: 80%;
    max-width: 600px;
    box-shadow: 0 4px 6px rgba(3, 218, 198, 0.3);
}

.close-button {
    color: #e0e0e0;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close-button:hover,
.close-button:focus {
    color: #0052CC;
}

.ai-chat-modal-content h2 {
    color: #0052CC;
    margin-top: 0;
}

.chat-window {
    height: 400px;
    overflow-y: auto;
    background-color: #121212;
    border: 1px solid #333;
    border-radius: 5px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.chat-message {
    margin-bottom: 1rem;
    padding: 0.75rem;
    border-radius: 5px;
    max-width: 80%;
}

.user-message {
    background-color: #0052CC;
    color: #121212;
    margin-left: auto;
    text-align: right;
}

.ai-message {
    background-color: #2c2c2c;
    color: #e0e0e0;
}

.typing-indicator {
    font-style: italic;
    opacity: 0.7;
}

.chat-input-container {
    display: flex;
    gap: 0.5rem;
}

.chat-input-container input {
    flex: 1;
    background-color: #1e1e1e;
    border: 1px solid #333;
    color: #e0e0e0;
    padding: 0.75rem;
    border-radius: 5px;
    transition: border-color 0.3s ease;
}

.chat-input-container input:focus {
    outline: none;
    border-color: #03dac6;
}

.chat-input-container button {
    background-color: #0052CC;
    color: #121212;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.chat-input-container button:hover {
    background-color: #0052CC;
}

@media (max-width: 768px) {
    .ai-chat-modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 1rem;
    }

    .chat-window {
        height: 300px;
    }
}

/* --- Human Tech Theme Refresh --- */
:root {
    --bg-base: #070b14;
    --bg-elevated: #101826;
    --bg-panel: #121c2d;
    --text-main: #d7e0f0;
    --text-muted: #8fa0ba;
    --accent: #4f8cff;
    --accent-soft: #79f7d4;
    --line: #253249;
}

body.human-tech-theme {
    background:
        radial-gradient(circle at 12% 8%, rgba(79, 140, 255, 0.16), transparent 28%),
        radial-gradient(circle at 86% 22%, rgba(121, 247, 212, 0.12), transparent 24%),
        linear-gradient(180deg, #050911 0%, var(--bg-base) 50%, #05080f 100%);
    color: var(--text-main);
    line-height: 1.55;
}

body.human-tech-theme::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    opacity: 0.25;
    background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
}

body.human-tech-theme header,
body.human-tech-theme footer {
    background: rgba(9, 14, 23, 0.86);
    backdrop-filter: blur(8px);
    border-color: var(--line);
}

body.human-tech-theme .header-text h1 {
    font-weight: 750;
    letter-spacing: 0.02em;
}

body.human-tech-theme .header-text .job-title,
body.human-tech-theme .category-title,
body.human-tech-theme .project h3,
body.human-tech-theme .research-paper h3,
body.human-tech-theme #skills .skill-column h3,
body.human-tech-theme .tech-showcase-title {
    color: var(--accent-soft);
}

body.human-tech-theme #hero-section {
    min-height: 80vh;
    background: linear-gradient(160deg, rgba(8, 13, 22, 0.9), rgba(16, 24, 38, 0.72));
    border: 1px solid var(--line);
    border-radius: 24px;
    margin: 1rem 2rem 0;
}

body.human-tech-theme .hero-headline {
    text-shadow: none;
    max-width: 18ch;
    margin-inline: auto;
}

body.human-tech-theme .hero-subtitle {
    color: var(--text-muted);
    max-width: 62ch;
}

.hero-status-strip {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 auto 1.7rem;
}

.hero-status-strip span {
    border: 1px dashed rgba(121, 247, 212, 0.45);
    color: #b7fbe8;
    font-size: 0.87rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    padding: 0.45rem 0.8rem;
    border-radius: 999px;
    background-color: rgba(20, 31, 48, 0.8);
}

.hero-status-strip i {
    margin-right: 0.4rem;
    font-size: 0.75rem;
}

body.human-tech-theme .impact-metrics {
    gap: 1rem;
}

body.human-tech-theme .metric-card,
body.human-tech-theme .project,
body.human-tech-theme .research-paper,
body.human-tech-theme #skills .skill-column,
body.human-tech-theme #contact,
body.human-tech-theme .category-container {
    background: linear-gradient(180deg, rgba(17, 26, 41, 0.95), rgba(12, 20, 33, 0.92));
    border-color: var(--line);
    border-radius: 12px;
    box-shadow: none;
}

body.human-tech-theme .category-container {
    border-width: 1px;
}

body.human-tech-theme .category-container:hover,
body.human-tech-theme .project:hover,
body.human-tech-theme .research-paper:hover,
body.human-tech-theme #skills .skill-column:hover,
body.human-tech-theme .metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 0 1px rgba(121, 247, 212, 0.22), 0 16px 24px rgba(0, 0, 0, 0.25);
    border-color: rgba(121, 247, 212, 0.35);
}

body.human-tech-theme .metric-number {
    color: #a8c6ff;
}

body.human-tech-theme .metric-label,
body.human-tech-theme .cta-subtitle,
body.human-tech-theme .quote-author,
body.human-tech-theme footer .copyright {
    color: var(--text-muted);
}

body.human-tech-theme .btn {
    background: #16243a;
    color: #dce7ff !important;
    border: 1px solid #2b3f61;
    border-radius: 7px;
}

body.human-tech-theme .btn:hover {
    background: #1d2f4a;
    border-color: #426396;
}

body.human-tech-theme .btn-primary {
    background: var(--accent);
    border-color: #6ea0ff;
    color: #051225 !important;
    box-shadow: none;
}

body.human-tech-theme .btn-secondary {
    color: #b8ccf7 !important;
    border-color: #3b5684;
    background: rgba(15, 26, 41, 0.7);
}

body.human-tech-theme #contact-cta {
    background: linear-gradient(180deg, rgba(10, 16, 27, 0.95), rgba(8, 12, 21, 0.95));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

body.human-tech-theme .cta-headline {
    color: #d8e5ff;
    letter-spacing: 0.01em;
}

body.human-tech-theme .tech-showcase-divider {
    background: linear-gradient(90deg, transparent, rgba(121, 247, 212, 0.8), transparent);
}

body.human-tech-theme .tech-icons img {
    filter: grayscale(0.1) saturate(0.85);
    opacity: 0.9;
}

body.human-tech-theme .tech-icons img:hover {
    transform: scale(1.12) rotate(2deg);
    filter: none;
}

@media (max-width: 768px) {
    body.human-tech-theme #hero-section {
        margin: 0.5rem 1rem 0;
        border-radius: 14px;
    }

    .hero-status-strip {
        justify-content: flex-start;
    }

    .hero-status-strip span {
        font-size: 0.75rem;
    }
}

/* --- Editorial redesign: handcrafted, non-template layout --- */
body.editorial-theme {
    --paper: #0a0c10;
    --ink: #e8edf4;
    --muted-ink: #9eaabf;
    --accent-ink: #7bc1ff;
    --rule: #2b3240;
    background: var(--paper);
    color: var(--ink);
}

body.editorial-theme::before {
    opacity: 0.08;
    background-size: 42px 42px;
}

body.editorial-theme section {
    margin: 0;
    padding: 4rem clamp(1.2rem, 4vw, 5rem);
}

body.editorial-theme .btn,
body.editorial-theme .btn-primary,
body.editorial-theme .btn-secondary {
    box-shadow: none !important;
    border-radius: 0;
    border: 1px solid var(--rule);
    background: transparent;
    color: var(--ink) !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.78rem;
}

body.editorial-theme .btn:hover {
    background: #171b24;
    transform: none;
}

body.editorial-theme .social-links-bottom .btn,
body.editorial-theme .footer-links a {
    width: auto;
    height: auto;
    padding: 0.35rem 0.5rem;
    border-radius: 0;
    background: transparent;
}

body.editorial-theme .footer-links a {
    color: var(--ink);
}

body.editorial-theme .category-container,
body.editorial-theme .project,
body.editorial-theme .research-paper,
body.editorial-theme .skill-column,
body.editorial-theme .metric-card {
    background: none !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

.section-kicker {
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--muted-ink);
    margin-bottom: 1.2rem;
}

.editorial-hero {
    padding-top: 5rem;
    display: grid;
    grid-template-columns: 1.35fr 1fr;
    gap: 2.5rem;
    align-items: end;
    border-bottom: 1px solid var(--rule);
}

.editorial-hero .hero-headline {
    grid-column: 1 / -1;
    font-size: clamp(2.3rem, 7vw, 5.3rem);
    font-weight: 800;
    line-height: 0.96;
    text-transform: uppercase;
    max-width: 16ch;
    margin: 0;
}

.editorial-hero .hero-subtitle {
    max-width: 56ch;
    margin: 0;
    color: var(--muted-ink);
    font-size: 1.05rem;
}

.hero-facts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem 1.4rem;
    align-self: center;
    border-left: 1px solid var(--rule);
    padding-left: 1.2rem;
}

.hero-facts div {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted-ink);
}

.hero-facts span {
    display: block;
    color: var(--ink);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.editorial-hero .hero-cta {
    grid-column: 1 / -1;
    justify-content: flex-start;
    margin-top: 1rem;
}

.editorial-projects {
    position: relative;
}

.split-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2.8rem;
}

.split-intro h2,
.editorial-research h2,
.editorial-skills h2 {
    margin: 0;
    text-transform: uppercase;
    font-size: clamp(1.6rem, 3.2vw, 2.8rem);
    letter-spacing: 0.04em;
}

.split-intro p {
    margin: 0;
    color: var(--muted-ink);
    align-self: end;
}

.project-stories {
    display: block;
}

.story-block {
    display: grid;
    grid-template-columns: minmax(220px, 35%) 1fr;
    gap: 1.4rem;
    align-items: start;
    margin-bottom: 4rem;
    border-top: 1px solid var(--rule);
    padding-top: 1.4rem;
}

.story-block:nth-child(even) {
    grid-template-columns: 1fr minmax(220px, 35%);
}

.story-block:nth-child(even) .story-media {
    order: 2;
    transform: translateY(1.5rem);
}

.story-media img {
    width: 100%;
    display: block;
    filter: grayscale(0.2) contrast(1.05);
}

.story-copy h3,
.research-entry h3 {
    margin: 0 0 0.6rem;
    color: var(--ink) !important;
    font-size: clamp(1.1rem, 2.3vw, 1.8rem);
    line-height: 1.18;
}

.story-copy p,
.research-entry p {
    margin: 0;
    color: var(--muted-ink);
}

.story-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1rem;
}

.editorial-research {
    padding-top: 2rem;
    border-top: 1px solid var(--rule);
}

.research-columns {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 2rem;
}

.research-entry:nth-child(2) {
    margin-top: 4rem;
}

.research-media {
    margin-top: 1rem;
}

.editorial-skills {
    border-top: 1px solid var(--rule);
}

.skills-zigzag {
    margin-top: 1.8rem;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.editorial-skills .skill-column {
    padding: 0.7rem 0;
    border-top: 1px solid var(--rule) !important;
}

.editorial-skills .skill-column:nth-child(1) {
    grid-column: 1 / 3;
}

.editorial-skills .skill-column:nth-child(2) {
    grid-column: 3 / 7;
}

.editorial-skills .skill-column:nth-child(3) {
    grid-column: 1 / 4;
}

.editorial-skills .skill-column:nth-child(4) {
    grid-column: 4 / 7;
}

.editorial-skills .skill-column:nth-child(5) {
    grid-column: 2 / 6;
}

.editorial-skills .skill-column h3 {
    text-align: left;
    margin-bottom: 0.5rem;
    color: var(--ink) !important;
}

.editorial-skills .skill-column ul li {
    text-align: left;
    color: var(--muted-ink);
}

.tech-ribbon {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--rule);
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.tech-ribbon img {
    width: 34px;
    height: 34px;
    filter: grayscale(0.1);
}

body.editorial-theme #contact-cta {
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    background: transparent;
}

body.editorial-theme .cta-container {
    max-width: 960px;
    text-align: left;
}

body.editorial-theme .cta-headline {
    margin: 0;
    font-size: clamp(1.6rem, 4vw, 3rem);
    text-transform: uppercase;
}

body.editorial-theme .cta-subtitle {
    margin: 1rem 0 2rem;
    max-width: 60ch;
}

@media (max-width: 900px) {
    .editorial-hero,
    .split-intro,
    .story-block,
    .story-block:nth-child(even),
    .research-columns {
        grid-template-columns: 1fr;
    }

    .story-block:nth-child(even) .story-media {
        order: 0;
        transform: none;
    }

    .skills-zigzag {
        grid-template-columns: 1fr;
    }

    .editorial-skills .skill-column:nth-child(n) {
        grid-column: auto;
    }

    .hero-facts {
        border-left: 0;
        padding-left: 0;
    }
}

/* --- Signature layout: Apple/Stripe inspired storytelling --- */
body.signature-layout {
    --bg: #07090d;
    --fg: #f5f7fa;
    --muted: #a4adba;
    --line: #252c36;
    --accent: #8bd0ff;
    background: radial-gradient(circle at 80% 2%, rgba(139, 208, 255, 0.08), transparent 25%), var(--bg);
    color: var(--fg);
    font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body.signature-layout::before,
body.signature-layout .overlay,
body.signature-layout .hero-background,
body.signature-layout .particle {
    display: none !important;
}

body.signature-layout section {
    margin: 0;
    padding: clamp(3rem, 8vw, 7rem) clamp(1.1rem, 6vw, 8rem);
}

body.signature-layout header,
body.signature-layout footer {
    background: transparent;
    border-color: var(--line);
}

.signature-header {
    border-bottom: 1px solid var(--line);
}

.signature-header-inner {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    align-items: flex-end;
    padding: 1.4rem clamp(1.1rem, 6vw, 8rem);
}

.identity-block {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.signature-layout .profile-picture {
    width: 82px;
    height: 82px;
    margin: 0;
    border: 1px solid var(--line);
    border-radius: 8px;
    opacity: 1;
    transform: none;
    animation: none;
}

.identity-copy h1 {
    margin: 0;
    font-size: clamp(1.25rem, 3vw, 2rem);
    line-height: 1.05;
}

.kicker {
    margin: 0 0 0.45rem;
    text-transform: uppercase;
    letter-spacing: 0.13em;
    font-size: 0.72rem;
    color: var(--muted);
}

.signature-layout .welcome-message,
.signature-layout .job-title {
    margin: 0.35rem 0 0;
    color: var(--muted);
}

.signature-social {
    margin-top: 0;
    width: auto;
    justify-content: flex-end;
    gap: 0.4rem;
}

.signature-layout .social-links-bottom .btn,
.signature-layout .footer-links a,
.signature-layout .btn {
    border: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    color: var(--fg) !important;
    box-shadow: none !important;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
}

.signature-layout .btn:hover,
.signature-layout .footer-links a:hover,
.signature-layout .social-links-bottom .btn:hover {
    background: #151a22;
    transform: none;
}

.story-hero {
    max-width: 1440px;
    margin: 0 auto;
    border-bottom: 1px solid var(--line);
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: 2rem;
    align-items: end;
}

.hero-title {
    margin: 0;
    grid-column: 1 / -1;
    font-size: clamp(2.2rem, 7vw, 6rem);
    line-height: 0.92;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

.hero-lead {
    margin: 0;
    color: var(--muted);
    max-width: 58ch;
    font-size: 1.1rem;
}

.hero-metrics {
    border-left: 1px solid var(--line);
    padding-left: 1rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem 1rem;
}

.hero-metrics .metric-number {
    display: block;
    color: var(--fg);
    font-size: clamp(1.5rem, 3.5vw, 2.7rem);
    font-weight: 700;
}

.hero-metrics .metric-label {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    font-size: 0.68rem;
}

.story-hero .hero-cta {
    grid-column: 1 / -1;
    justify-content: flex-start;
    margin-top: 1rem;
}

.story-projects,
.story-research,
.story-skills,
.story-contact {
    max-width: 1440px;
    margin: 0 auto;
}

.section-heading {
    margin-bottom: 2rem;
}

.section-heading h2,
.story-contact h2 {
    margin: 0;
    font-size: clamp(1.7rem, 4vw, 3.7rem);
    letter-spacing: -0.01em;
}

.section-heading p,
.story-contact p {
    margin: 0.8rem 0 0;
    color: var(--muted);
    max-width: 58ch;
}

.section-heading.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.story-row {
    display: grid;
    grid-template-columns: minmax(260px, 34%) 1fr;
    gap: 1.4rem;
    align-items: start;
    border-top: 1px solid var(--line) !important;
    padding-top: 1.4rem;
    margin: 0 0 4rem;
}

.story-row:nth-of-type(even) {
    grid-template-columns: 1fr minmax(260px, 34%);
}

.story-row:nth-of-type(even) .story-row-media {
    order: 2;
    margin-top: 2rem;
}

.story-row-media img {
    width: 100%;
    display: block;
    filter: contrast(1.02) grayscale(0.15);
}

.story-row-copy h3,
.research-item h3 {
    margin: 0 0 0.7rem;
    font-size: clamp(1.1rem, 2.4vw, 2rem);
    color: var(--fg) !important;
}

.story-row-copy p,
.research-item p {
    color: var(--muted);
    margin: 0;
}

.story-actions {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.left-align {
    text-align: left;
}

.story-research {
    border-top: 1px solid var(--line);
}

.research-flow {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
}

.research-item {
    border-top: 1px solid var(--line) !important;
    padding-top: 1rem;
}

.research-item:last-child {
    margin-top: 4rem;
}

.story-skills {
    border-top: 1px solid var(--line);
}

.skills-lines p {
    margin: 0;
    padding: 0.9rem 0;
    border-top: 1px dashed var(--line);
    color: var(--muted);
}

.skills-lines p strong {
    color: var(--fg);
}

.tech-ribbon {
    margin-top: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.tech-ribbon img {
    width: 34px;
    height: 34px;
    filter: grayscale(0.08);
}

.story-contact {
    border-top: 1px solid var(--line);
}

.signature-layout .cta-quick-contact {
    justify-content: flex-start;
    margin-top: 1rem;
}

.signature-layout footer {
    border-top: 1px solid var(--line);
    margin-top: 0;
}

.signature-layout .footer-links {
    gap: 0.6rem;
}

@media (max-width: 980px) {
    .signature-header-inner,
    .story-hero,
    .section-heading.split,
    .story-row,
    .story-row:nth-of-type(even),
    .research-flow {
        grid-template-columns: 1fr;
    }

    .signature-header-inner {
        display: grid;
        align-items: start;
    }

    .story-row:nth-of-type(even) .story-row-media {
        order: 0;
        margin-top: 0;
    }

    .hero-metrics {
        border-left: 0;
        padding-left: 0;
    }
}