/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    background: #000;
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== HERO SECTION WITH NEURAL NETWORK ===== */
.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

#main-canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: #000;
}

/* Hero content overlay */




.hero-name {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    margin: 0 0 20px 0;
    padding: 0;
    color: #00ffff;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
}



@keyframes glow-pulse {
    0%, 100% {
        text-shadow: 0 0 40px rgba(0, 255, 255, 0.5),
                     0 0 80px rgba(0, 255, 255, 0.3);
    }
    50% {
        text-shadow: 0 0 60px rgba(0, 255, 255, 0.8),
                     0 0 120px rgba(0, 255, 255, 0.5);
    }
}

@keyframes scanline {
    0% {
        transform: translateY(-100%);
    }
    100% {
        transform: translateY(100%);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: #00ffff;
    font-size: 14px;
    text-shadow: 0 0 10px #00ffff;
    opacity: 0.7;
    animation: pulse 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid #00ffff;
    border-bottom: 2px solid #00ffff;
    transform: rotate(-45deg);
    margin: 10px auto 0;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) rotate(-45deg); }
    40% { transform: translateY(-10px) rotate(-45deg); }
    60% { transform: translateY(-5px) rotate(-45deg); }
}

/* ===== MAIN CONTENT WRAPPER ===== */
.content-wrapper {
    position: relative;
    background: #000;
}

/* ===== SECTIONS ===== */
.section {
    position: relative;
    padding: 100px 20px;
    min-height: 100vh;
    overflow: hidden;
}

.container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    z-index: 10;
}

/* Background network canvas for each section */
.bg-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    pointer-events: none;
    z-index: 1;
}

/* ===== SECTION TITLES ===== */
.section-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, #00ffff 0%, #00cccc 50%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 255, 255, 0.3);
}

.section-subtitle {
    text-align: center;
    margin: -40px auto 40px;
    max-width: 70ch;
    font-size: 1.1rem;
    color: #e0e0e0;
    line-height: 1.6;
}

/* ===== HIGHLIGHT TEXT ===== */
.highlight {
    background: linear-gradient(135deg, #00ffff 0%, #00cccc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

/* ===== ABOUT SECTION ===== */
.about-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #e0e0e0;
}

.about-content p {
    margin-bottom: 1.5rem;
}

/* ===== TECH STACK SECTION ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.tech-category {
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    padding: 25px;
    transition: all 0.3s ease;
}

.tech-category:hover {
    background: rgba(0, 255, 255, 0.08);
    border-color: rgba(0, 255, 255, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.tech-category-title {
    font-size: 1.2rem;
    color: #00ffff;
    margin-bottom: 15px;
    font-weight: 600;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.tech-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-item {
    background: rgba(0, 255, 255, 0.1);
    color: #00ffff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(0, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: rgba(0, 255, 255, 0.2);
    border-color: #00ffff;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
    transform: scale(1.05);
}

/* ===== EDUCATION SECTION - TIMELINE ===== */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 50px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #00ffff 0%, #00cccc 100%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

.timeline-marker {
    position: absolute;
    left: -36px;
    top: 0;
    width: 12px;
    height: 12px;
    background: #00ffff;
    border-radius: 50%;
    box-shadow: 0 0 15px #00ffff, 0 0 30px rgba(0, 255, 255, 0.5);
}

.timeline-content {
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    padding: 25px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    background: rgba(0, 255, 255, 0.08);
    border-color: rgba(0, 255, 255, 0.4);
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.timeline-title {
    font-size: 1.5rem;
    color: #00ffff;
    margin-bottom: 8px;
    font-weight: 600;
}

.timeline-institution {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 5px;
    font-weight: 500;
}

.timeline-date {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.timeline-description {
    color: #e0e0e0;
    line-height: 1.6;
}

/* University logo styling - emoji-sized inline icons */
.uni-logo {
    height: 1.2em;
    width: auto;
    vertical-align: middle;
    margin-right: 8px;
    display: inline-block;
}


/* ===== WORK EXPERIENCE SECTION ===== */
.experience-grid {
    display: grid;
    gap: 30px;
}

.experience-card {
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
}

.experience-card:hover {
    background: rgba(0, 255, 255, 0.08);
    border-color: rgba(0, 255, 255, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 10px;
}

.experience-title {
    font-size: 1.5rem;
    color: #00ffff;
    font-weight: 600;
}

.experience-date {
    color: #888;
    font-size: 0.9rem;
}

.experience-company {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 15px;
    font-weight: 500;
}

.experience-list {
    list-style: none;
    padding-left: 0;
}

.experience-list li {
    color: #e0e0e0;
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    line-height: 1.6;
}

.experience-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: #00ffff;
    font-weight: bold;
}

/* ===== PUBLICATIONS SECTION ===== */
.publications-list {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.publication-card {
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
}

.publication-card:hover {
    background: rgba(0, 255, 255, 0.08);
    border-color: rgba(0, 255, 255, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.publication-title {
    font-size: 1.3rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.publication-title a {
    color: #00ffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.publication-title a:hover {
    color: #00cccc;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.publication-authors {
    color: #e0e0e0;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.publication-authors strong {
    color: #ffffff;
}

.publication-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 0.9rem;
    color: #888;
}

.publication-meta .separator {
    color: #444;
}

.publication-doi {
    color: #00ffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.publication-doi:hover {
    color: #00cccc;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

/* ===== PROJECTS & CONFERENCES SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    background: rgba(0, 255, 255, 0.08);
    border-color: rgba(0, 255, 255, 0.4);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.project-title {
    font-size: 1.4rem;
    color: #00ffff;
    margin-bottom: 15px;
    font-weight: 600;
}

.project-description {
    color: #e0e0e0;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: rgba(0, 255, 255, 0.1);
    color: #00ffff;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    border: 1px solid rgba(0, 255, 255, 0.3);
}

/* ===== CONTACT SECTION ===== */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.1rem;
    color: #e0e0e0;
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 30px;
    background: rgba(0, 255, 255, 0.03);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 12px;
    text-decoration: none;
    color: #00ffff;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    min-width: 300px;
}

.contact-link:hover {
    background: rgba(0, 255, 255, 0.08);
    border-color: rgba(0, 255, 255, 0.4);
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.2);
}

.contact-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* ===== FOOTER ===== */
.footer {
    text-align: center;
    padding: 40px 20px;
    color: #888;
    border-top: 1px solid rgba(0, 255, 255, 0.1);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    #matrix-name-canvas {
        /* On mobile, might need smaller font or adjusted spacing */
        /* This is handled in the JS, but we can scale if needed */
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        letter-spacing: 0.15em;
        margin-top: 10px;
    }
    
    .section {
        padding: 60px 20px;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-marker {
        left: -26px;
    }

    .experience-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .contact-link {
        min-width: 250px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-subtitle {
        font-size: 0.7rem;
        margin-top: 5px;
    }
    
    .section-title {
        text-align: center;
        font-size: 1.5rem;
    }

    .section-subtitle{
        text-align: center;
        margin: 0.75rem auto 2rem;   /* space below title + before grid */
        max-width: 70ch;             /* keeps it readable */
    }

    .about-content {
        font-size: 1rem;
    }

    .contact-link {
        min-width: 200px;
        padding: 15px 20px;
    }
}