@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500&family=Outfit:wght@300;400;500;600&display=swap');

:root {
    --bg-color: #000000;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent-primary: #ffffff;
    --accent-secondary: #222222;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --nav-height: 90px;
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --hero-opacity: 0.3;
    --hero-brightness: 0.4;
}

[data-theme="light"] {
    --bg-color: #ffffff;
    --text-primary: #000000;
    --text-secondary: #666666;
    --accent-primary: #000000;
    --accent-secondary: #eeeeee;
    --glass-bg: rgba(0, 0, 0, 0.03);
    --glass-border: rgba(0, 0, 0, 0.06);
    --hero-opacity: 0.1;
    --hero-brightness: 1.1;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Background Grain Effect */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("https://grainy-gradients.vercel.app/noise.svg");
    opacity: 0.05;
    pointer-events: none;
    z-index: 9999;
}

h1, h2, h3 {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

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

/* Reusable Components */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

.btn {
    padding: 12px 32px;
    border-radius: 2px;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: none;
}

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

.btn-primary:hover {
    opacity: 0.8;
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

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

/* Navbar */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    z-index: 1000;
    transition: var(--transition-fast);
}

nav.scrolled {
    background: var(--bg-color);
    height: 70px;
    border-bottom: 1px solid var(--glass-border);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.1rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    height: 32px;
    width: auto;
    filter: brightness(1);
    transition: var(--transition-fast);
}

[data-theme="light"] .logo-icon {
    filter: invert(1);
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: var(--transition-fast);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.9rem;
}

/* Hero Section - Redesigned & Centered */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    object-fit: cover;
    opacity: var(--hero-opacity);
    filter: brightness(var(--hero-brightness)) grayscale(1);
}

.hero-content {
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.tagline {
    font-size: 0.75rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 2rem;
    font-weight: 300;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 0 auto 3rem;
    max-width: 600px;
    font-weight: 300;
}

.hero-btns {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Sections */
section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.section-header p {
    color: var(--text-secondary);
    max-width: 550px;
    margin: 0 auto;
    font-weight: 300;
}

/* Labs Work Unique Design */
#labs-work {
    padding: 80px 0;
    border-bottom: 1px solid var(--glass-border);
}

.current-work-flex {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.work-header {
    flex: 1;
}

.work-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

.work-header h3 {
    font-size: 1.8rem;
    line-height: 1.3;
    font-weight: 300;
}

.work-body {
    flex: 1;
    padding-top: 0;
}

.work-body p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 300;
    border-left: 1px solid var(--glass-border);
    padding-left: 2rem;
}

/* Research List */
.research-list {
    display: flex;
    flex-direction: column;
}

.research-item {
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-slow);
}

.research-row {
    display: flex;
    align-items: center;
    padding: 3rem 0;
    gap: 4rem;
}

.research-main {
    display: flex;
    align-items: center;
    gap: 3rem;
    min-width: 350px;
}

.research-num {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.research-row h3 {
    font-size: 1.6rem;
    font-weight: 400;
}

.research-description {
    flex: 1;
    opacity: 0.4;
    transition: var(--transition-fast);
}

.research-item:hover .research-description {
    opacity: 1;
}

.research-description p {
    font-size: 0.9rem;
    font-weight: 300;
}

/* Collapsible Fix */
.research-more {
    display: none;
    flex-direction: column;
}

.research-more.expanded {
    display: flex;
}

.view-all-container {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.btn-view-all {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    padding: 12px 30px;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Contact Section */
#contact-section {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
}

#contact-section .section-header {
    margin-bottom: 0;
}

.contact-email {
    display: inline-block;
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    text-decoration: none;
    margin-top: 1rem;
    position: relative;
    font-weight: 300;
    transition: var(--transition-fast);
}

.contact-email::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.contact-email:hover::after {
    width: 100%;
}

.contact-email:hover {
    opacity: 0.7;
}

/* Footer */
footer {
    padding: 40px 0 30px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.social-links a {
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.social-links a:hover {
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: left;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    opacity: 0.9;
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Blogs Section */
#blogs {
    padding: 80px 0;
    border-top: 1px solid var(--glass-border);
}

.blogs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.blog-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    border-color: var(--glass-border);
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .blog-card:hover {
    background: rgba(0, 0, 0, 0.05);
}

.blog-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 400;
    line-height: 1.4;
}

.blog-content h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.blog-content h3 a:hover {
    opacity: 0.8;
}

.blog-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.blog-read-more {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--text-primary);
    padding-bottom: 2px;
    align-self: flex-start;
    transition: opacity 0.3s;
}

.blog-read-more:hover {
    opacity: 0.7;
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .current-work-flex { flex-direction: column; gap: 2rem; }
    .work-body { padding-top: 0; }
    .work-body p { padding-left: 1.5rem; border-left: 2px solid var(--glass-border); }
    .research-row { flex-direction: column; align-items: flex-start; gap: 1rem; padding: 2rem 0; }
    .research-main { min-width: auto; }
    .hero-btns { flex-direction: column; }
    .blogs-grid { grid-template-columns: 1fr; }
}