/* Root Variables */
:root {
    --maroon: #660000;
    --maroon-dark: #4d0000;
    --maroon-light: #800000;
    --accent: #2C5F8D;
    --text-dark: #1a1a1a;
    --text-gray: #666666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
    overflow-wrap: anywhere;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px var(--shadow);
    z-index: 1000;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--maroon);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--maroon);
    transition: width 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--maroon);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--maroon) 0%, var(--maroon-dark) 100%);
    color: var(--bg-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
    text-align: center;
    width: 100%;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--bg-white);
    border: 2px solid var(--bg-white);
}

.btn-secondary:hover {
    background: var(--bg-white);
    color: var(--maroon);
    transform: translateY(-2px);
}

.hero-social {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.8s backwards;
}

.hero-social a {
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
}

.hero-social a:hover {
    color: var(--bg-white);
    transform: translateY(-3px);
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-alt {
    background: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--maroon);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--maroon);
    margin: 1rem auto 0;
}

/* About Section */
.about-content {
    display: grid;
    gap: 3rem;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-gray);
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-category h3 {
    font-size: 1.25rem;
    color: var(--maroon);
    margin-bottom: 1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tags span {
    background: var(--bg-white);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.skill-tags span:hover {
    background: var(--maroon);
    color: var(--bg-white);
    border-color: var(--maroon);
    transform: translateY(-2px);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--maroon);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-marker {
    position: absolute;
    left: -2.5rem;
    top: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--maroon);
    border: 3px solid var(--bg-light);
}

.timeline-content {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    box-shadow: 0 5px 20px var(--shadow-hover);
    transform: translateY(-3px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-header h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
}

.timeline-date {
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 500;
}

.timeline-company {
    color: var(--maroon);
    font-weight: 500;
    margin-bottom: 1rem;
}

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

.timeline-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.75rem;
    color: var(--text-gray);
}

.timeline-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--maroon);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    transition: all 0.3s ease;
}

.project-card:hover {
    box-shadow: 0 5px 20px var(--shadow-hover);
    transform: translateY(-5px);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    gap: 1rem;
}

.project-header h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
}

.project-link {
    color: var(--text-gray);
    transition: all 0.3s ease;
}

.project-link:hover {
    color: var(--maroon);
    transform: scale(1.1);
}

.project-type {
    color: var(--maroon);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-description {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.project-tags span {
    background: var(--bg-light);
    color: var(--text-dark);
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Education */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.education-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
}

.education-card:hover {
    box-shadow: 0 5px 20px var(--shadow-hover);
    transform: translateY(-5px);
}

.education-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.education-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.education-honors {
    color: var(--maroon);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.education-school {
    color: var(--maroon);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.education-location {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.education-date {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.education-gpa {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.education-honors-list {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* Contact */
.contact-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.125rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.contact-info {
    display: grid;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: var(--maroon);
    color: var(--bg-white);
    transform: translateX(5px);
}

.contact-item svg {
    flex-shrink: 0;
}

.contact-item span {
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--bg-white);
    padding: 2rem 0;
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 1rem 2rem;
        box-shadow: 0 5px 15px var(--shadow);
        gap: 1rem;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    .hero-content {
        padding: 3rem 1.5rem;
    }

    .hero-description {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .section-title {
        font-size: 2rem;
    }

    .about-text {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .timeline {
        padding-left: 1.5rem;
    }
    
    .timeline-marker {
        left: -2rem;
    }
    
    .timeline-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .timeline-content,
    .project-card,
    .education-card {
        padding: 1.5rem;
    }

    .project-header {
        align-items: flex-start;
    }

    .project-header h3 {
        font-size: 1.3rem;
    }
    
    .skills-grid,
    .projects-grid,
    .education-grid {
        grid-template-columns: 1fr;
    }

    .contact-item {
        justify-content: flex-start;
        text-align: left;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 1rem;
    }

    .nav-logo {
        font-size: 1.2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .hero-content {
        padding: 2.5rem 1rem;
    }
    
    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: 2.25rem;
    }

    .timeline {
        padding-left: 1.1rem;
    }

    .timeline-marker {
        left: -1.55rem;
    }

    .timeline-content,
    .project-card,
    .education-card {
        padding: 1.25rem;
    }

    .project-header {
        gap: 0.75rem;
    }

    .project-header h3,
    .education-card h3,
    .timeline-header h3 {
        font-size: 1.1rem;
    }

    .skill-tags {
        gap: 0.4rem;
    }

    .skill-tags span,
    .project-tags span {
        font-size: 0.8rem;
        padding: 0.35rem 0.7rem;
    }

    .contact-item {
        align-items: flex-start;
        gap: 0.75rem;
        padding: 0.9rem;
    }

    .contact-item span {
        font-size: 0.95rem;
    }
}