/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1e40af;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #6b7280;
    --accent-color: #f59e0b;
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --background-black: #000000;
    --background-dark: #111111;
    --background-card: #1a1a1a;
    --background-card-hover: #2a2a2a;
    --background-emphasis: #1b2a5e;
    --border-color: #333333;
    --border-light: #444444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-black);
    font-size: 16px;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: 0.5rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.875rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-light);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
    /* max-width: 1200px; */
    background-color: rgba(0, 0, 0, 0.95);
    margin: 0 auto;
}

.nav-logo h2 {
    /* color: var(--primary-color); */
    margin: 0;
    font-size: 1.5rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 50px;
    background: var(--background-black);
    min-height: 95vh;
    display: flex;
    align-items: center;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}

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

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease-out;
}

/* Parallax effect for hero image */
.hero-image.parallax img {
    transform: translateY(var(--parallax-offset, 0px));
}

/* Parallax effect for blue sections */
.parallax-section {
    transform: translateY(var(--parallax-offset, 0px));
    transition: transform 0.2s ease-out;
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background-color: var(--background-black);
}

/* Motivation section - blue background with two columns */
.motivation {
    background-color: var(--background-emphasis);
}

.motivation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.motivation-column h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
}

.motivation-column p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.motivation-box {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.motivation-box:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Emphasis sections (deep blue for specific emphasis only) */
.emphasis {
    background-color: var(--background-emphasis);
}

/* Team section - deep blue background for emphasis */
.team {
    background-color: var(--background-emphasis);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

/* Info boxes and stats - consistent styling for all stats and key points */
.info-boxes,
.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.info-box,
.stat {
    text-align: center;
    padding: 1rem;
    background: var(--background-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.info-box:hover,
.stat:hover {
    background: var(--background-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.info-box-number,
.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
}

.info-box-label,
.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--background-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--background-card-hover);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 32px;
    height: 32px;
}

.feature-card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

/* Approach Section */
.approach {
    background: var(--background-black);
}

.approach-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

/* Two column layout for approach */
.approach-content-two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.approach-text h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

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

.approach-gifs-grid {
    margin-top: 3rem;
}

.gif-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.gif-row:last-child {
    margin-bottom: 0;
}

.gif-container {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--background-card);
    border: 1px solid var(--border-color);
}

.gif-container img {
    width: 100%;
    height: auto;
    display: block;
}

.gif-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    color: var(--text-primary);
    padding: 1rem;
    font-weight: 500;
    text-align: center;
    font-size: 0.9rem;
}

/* Team Member Card */
.team-member {
    background: var(--background-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    max-width: 400px;
    margin: 0 auto;
}

.team-member:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--background-card-hover);
}

.member-image {
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-color);
}

.member-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-member h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.member-role {
    color: var(--primary-light);
    font-weight: 500;
    margin-bottom: 1rem;
}

.member-bio {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Combined Thesis and Candidate Profile Section */
.thesis-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.thesis-opportunity h3,
.candidate-profile h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.thesis-opportunity p,
.candidate-profile p {
    color: var(--text-secondary);
    line-height: 1.6;
}
.candidate-profile {
    background: var(--background-emphasis);
    text-align: center;
}

/* Candidate profile grid for two-column layout */
.candidate-profile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.candidate-focus-box {
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.candidate-content {
    max-width: 800px;
    margin: 0 auto;
}

.candidate-content h3 {
    color: white;
    margin-bottom: 1.5rem;
}

.candidate-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.candidate-requirements {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.requirement-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.requirement-item h4 {
    color: white;
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.requirement-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    margin: 0;
}

/* Contact Section */
.contact {
    background: var(--background-black);
    text-align: center;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

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

.contact-center {
    text-align: center;
}

.contact-right {
    text-align: center;
}

.team-contact {
    background: var(--background-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-team-member {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    background: var(--background-black);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.contact-team-member img {
    width: 80px !important;
    height: 80px !important;
    border-radius: 50%;
    object-fit: cover;
    border: none !important;
    margin-bottom: 1rem;
}

.contact-simple {
    max-width: 100%;
    margin: 0;
}

/* References section styling */
.references {
    background: var(--background-black);
    border-top: 1px solid var(--border-color);
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: var(--primary-color);
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--primary-light);
    text-decoration: none;
    color: white;
    font-size: 1.125rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.contact-email:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.email-icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.demo-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.demo-video {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.demo-video video {
    width: 100%;
    height: auto;
}

.demo-description h3 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.demo-highlights {
    list-style: none;
    margin: 1.5rem 0;
}

.demo-highlights li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.demo-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-member {
    background-color: var(--background-card);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    max-width: 600px;
    margin: 0 auto;
}

.team-member:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--background-card-hover);
}

.member-image {
    margin-bottom: 1.5rem;
}

.member-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-light);
    box-shadow: var(--shadow-md);
}

.team-member h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.member-role {
    color: var(--primary-light);
    font-weight: 600;
    margin-bottom: 1rem;
}

.member-bio {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* Contact Section */
.contact-info h3 {
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.contact-item {
    margin-bottom: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    background-color: var(--background-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* References section styling */
.references {
    background: var(--background-black);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0;
}

/* Footer */
.footer {
    background: var(--background-black);
    color: var(--text-secondary);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        display: none;
    }
    
    .hero-content,
    .about-content,
    .demo-content,
    .contact-content,
    .approach-content-two-column,
    .thesis-content,
    .motivation-content,
    .candidate-profile-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .approach-gifs {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .gif-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .hero {
        padding: 100px 0 60px;
        text-align: center;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-stats,
    .info-boxes {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-team-member img {
        width: 60px !important;
        height: 60px !important;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-container {
        padding: 1rem 15px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-card,
    .team-member {
        padding: 1.5rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

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

.hero-content,
.section-header,
.feature-card,
.team-member {
    animation: fadeInUp 0.6s ease-out;
}