:root {
    --primary-color: #3962d3;
    --primary-dark: #ffffff;
    --text-dark: #f5f5f7;
    --text-light: #a1a1a6;
    --text-lighter: #666666;
    --bg-light: #000000;
    --border-color: #424245;
    --spacing-unit: 16px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: #0a0a0a;
    font-family: './fonts/SF-Pro-Display-Regular', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    scroll-behavior: smooth;
}

li {
    list-style: disc;
    color: var(--text-dark);
}

li::marker {
    color: var(--text-dark);
}

/* Header & Navigation */
header {
    position: sticky;
    top: 0;
    background-color: rgba(10, 10, 10, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 var(--spacing-unit);
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

header > div {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

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

nav li {
    color: var(--text-dark);
}

nav a {
    color: var(--text-dark);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.3px;
    transition: color 0.3s ease;
    position: relative;
    cursor: pointer;
    padding-bottom: 0.5rem;
    text-decoration: none;
}

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

nav a:hover::after {
    width: 100%;
}

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

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

/* Hero Section */
#intro {
    min-height: 600px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem var(--spacing-unit);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-text h2 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.avatar {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 980px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    border: none;
}

.cta-button.primary {
    background-color: var(--primary-color);
    color: #ffffff;
}

.cta-button.primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 113, 227, 0.3);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.cta-button.secondary:hover {
    background-color: var(--primary-color);
    color: #ffffff;
}

/* About Section */
#about {
    padding: 4rem var(--spacing-unit);
    background-color: #161617;
}

#about > div {
    max-width: 1200px;
    margin: 0 auto;
}

#about h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.9;
}

.about-text strong {
    color: var(--text-dark);
}

.skills-container {
    background-color: #1d1d1f;
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.skills-section h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.skills-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.skill-item {
    padding: 1.5rem;
    background-color: #0a0a0a;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.skill-item h4 {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 1rem;
}

.skill-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* Experience Section */
#experience {
    padding: 4rem var(--spacing-unit);
}

#experience > div {
    max-width: 1200px;
    margin: 0 auto;
}

#experience h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.experience-timeline {
    position: relative;
    padding: 2rem 0;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
    padding-left: 100px;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 5px;
    width: 60px;
    height: 60px;
    background-color: #ffffff;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
}

.timeline-content {
    background-color: #1d1d1f;
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.timeline-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.timeline-content .role {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content .date {
    color: var(--text-lighter);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Projects Section */
#projects {
    padding: 4rem var(--spacing-unit);
    background-color: #0a0a0a;
}

#projects > div {
    max-width: 1200px;
    margin: 0 auto;
}

#projects h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

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

.project-card {
    background-color: #1d1d1f;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.12);
}

.project-image {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    transition: transform 0.3s ease;
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.project-content p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    flex-grow: 1;
}

.project-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.project-stats span {
    display: inline-block;
    background-color: #0a0a0a;
    color: var(--primary-color);
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.project-link:hover {
    color: var(--primary-dark);
    transform: translateX(5px);
}

/* Blog Section */
#blog {
    padding: 4rem var(--spacing-unit);
}

#blog > div {
    max-width: 1200px;
    margin: 0 auto;
}

#blog h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.blog-card {
    background-color: #1d1d1f;
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.blog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.blog-date {
    color: var(--text-lighter);
}

.blog-category {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
}

.blog-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
    line-height: 1.4;
}

.blog-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    flex-grow: 1;
    line-height: 1.8;
}

.blog-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-lighter);
    font-size: 0.9rem;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
}

.read-more:hover {
    color: var(--primary-dark);
    transform: translateX(5px);
}

/* Stats Section */
#stats {
    padding: 4rem var(--spacing-unit);
    background: linear-gradient(135deg, var(--primary-color) 0%, #0066ff 100%);
}

#stats > div {
    max-width: 1200px;
    margin: 0 auto;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-item {
    text-align: center;
    color: #ffffff;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* Contact Section */
#contact {
    padding: 4rem var(--spacing-unit);
    background-color: #161617;
}

#contact > div {
    max-width: 1200px;
    margin: 0 auto;
}

#contact h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

#contact > div > p {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.info-card {
    background-color: #1d1d1f;
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.info-card:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.info-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
}

.info-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.info-card a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

.info-card a:hover {
    color: var(--primary-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background-color: #1d1d1f;
    color: var(--text-dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

.form-group textarea {
    resize: none;
}

.contact-form .cta-button {
    align-self: flex-start;
}

.social-links {
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
}

.social-links h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-icon {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #1d1d1f;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 980px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background-color: var(--primary-color);
    color: #ffffff;
    transform: translateY(-3px);
}

/* Footer */
footer {
    background-color: #000000;
    color: #ffffff;
    padding: 4rem var(--spacing-unit) 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}