:root {
    --bg-primary: #ffffff;
    --text-primary: #000000;
    --text-secondary: #666666;
    --grid-color: #000000;
    --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "Courier New", Courier, monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.4;
    height: 100vh;
    overflow: hidden; /* For the fixed layout feel */
    display: flex;
    flex-direction: column;
}

/* Layout Grid */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    flex: 1;
    border-bottom: 1px solid var(--grid-color);
    position: relative;
}

/* Left Content Area */
.content-area {
    padding: 4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-right: 1px solid var(--grid-color);
    position: relative;
}

.role-label {
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

h1.main-title {
    font-size: 5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 2rem;
    letter-spacing: -2px;
}

.description {
    font-family: var(--font-mono);
    max-width: 400px;
    margin-bottom: 3rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    border: 2px solid var(--text-primary);
    text-decoration: none;
    font-family: var(--font-mono);
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: transparent;
    color: var(--text-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Right Grid Area */
.visual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr 1fr;
}

.grid-cell {
    border-right: 1px solid var(--grid-color);
    border-bottom: 1px solid var(--grid-color);
    position: relative;
}

.grid-cell:nth-child(2n) {
    border-right: none;
}

/* Decorative squares/dots */
.grid-point {
    width: 10px;
    height: 10px;
    background: var(--text-primary);
    position: absolute;
    z-index: 10;
}

.point-center {
    top: -5px;
    left: -5px;
}

/* Navigation */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--grid-color);
}

.nav-brand {
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    color: var(--text-primary);
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-cta {
    border: 2px solid var(--text-primary);
    padding: 0.5rem 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: bold;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
}

/* Footer Bar */
.footer-bar {
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-info {
    display: flex;
    gap: 3rem;
}

/* Responsive */
@media (max-width: 768px) {
    .main-layout {
        grid-template-columns: 1fr;
        overflow-y: auto;
    }
    
    .content-area {
        border-right: none;
        border-bottom: 1px solid var(--grid-color);
        padding: 2rem;
    }
    
    .visual-grid {
        min-height: 300px;
    }
    
    h1.main-title {
        font-size: 3rem;
    }
    
    .nav-links {
        display: none; /* Simple mobile hide for now */
    }
}

/* Inner Page Styles */
.page-container {
    flex: 1;
    overflow-y: auto;
    padding: 4rem;
    border-bottom: 1px solid var(--grid-color);
    display: grid;
    grid-template-columns: 1fr 300px; /* Content + Sidebar/Grid */
    gap: 4rem;
}

.page-content {
    max-width: 800px;
}

.page-content h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    margin-top: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.page-content ul {
    list-style: none;
    margin-bottom: 2rem;
}

.page-content li {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.page-content li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--text-primary);
}

.page-sidebar {
    border-left: 1px solid var(--grid-color);
    margin-top: -4rem;
    margin-bottom: -4rem;
    margin-right: -4rem;
    background-image: linear-gradient(var(--grid-color) 1px, transparent 1px),
                      linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 100px 100px;
    background-position: -1px -1px;
    opacity: 0.1;
}

/* Research Page Specifics */
.research-area {
    margin-bottom: 4rem;
}

.research-area h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    font-weight: 700;
    border-bottom: 2px solid var(--grid-color);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.project {
    margin-bottom: 3rem;
    padding-left: 1rem;
    border-left: 2px solid var(--grid-color);
}

.project h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tags {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--grid-color);
    text-transform: uppercase;
}

/* Code Page Specifics */
.repository {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--grid-color);
    transition: all 0.3s ease;
}

.repository:hover {
    box-shadow: 5px 5px 0 var(--grid-color);
    transform: translate(-2px, -2px);
}

.repo-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.repo-title a {
    text-decoration: none;
    color: var(--text-primary);
}

.repo-title a:hover {
    text-decoration: underline;
}

.repo-description {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Contact Page Specifics */
.contact-section {
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    margin-bottom: 1.5rem;
    align-items: baseline;
}

.contact-label {
    width: 150px;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
}

.contact-value {
    flex: 1;
    font-size: 1.1rem;
}

.contact-value a {
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--text-primary);
}

.contact-value a:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.address-block {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--grid-color);
}