:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --background-color: #ffffff;
    --section-background: #f3f4f6;
    --border-color: #e5e7eb;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

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

/* Header & Navigation */
header {
    background-color: var(--background-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-container .logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
    padding: 0;
    line-height: 1;
    margin-right: 2rem;
}

.nav-container .logo a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-container .logo a:hover {
    color: var(--secondary-color);
}

.nav-container nav {
    padding: 0;
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.nav-container nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-container nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.blog-link {
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.blog-link:hover {
    background-color: var(--secondary-color);
    color: white !important;
}

/* Sections */
.section {
    padding: 4rem 0;
}

.section:nth-child(even) {
    background-color: var(--section-background);
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    align-items: center;
}

.profile-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: 3px solid var(--primary-color);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

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

/* Experience Section */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background-color: var(--background-color);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.experience-header {
    margin-bottom: 1rem;
}

.experience-header h3 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.role {
    font-weight: 600;
    color: var(--text-color);
    display: block;
    margin-bottom: 0.25rem;
}

.duration {
    color: #6b7280;
    font-size: 0.875rem;
}

.experience-details {
    list-style-position: inside;
    padding-left: 1rem;
}

.experience-details li {
    margin-bottom: 0.5rem;
}

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

.skill-category {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.skill-category h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.skill-category li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
}

/* Education Section */
.education-content {
    max-width: 800px;
    margin: 0 auto;
}

.education-item {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.education-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Certifications Section */
.certifications-content {
    max-width: 800px;
    margin: 0 auto;
}

.certification-item {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.certification-item h3 {
    color: var(--primary-color);
}

/* Contact Section */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    text-align: center;
    background-color: var(--background-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.social-links {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--primary-color);
    color: var(--background-color);
}

/* Blog Section */
.blog-content {
    max-width: 600px;
    margin: 0 auto;
}

.blog-info {
    text-align: center;
    background-color: var(--background-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.blog-info p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    color: var(--text-color);
}

.blog-link-container {
    display: flex;
    justify-content: center;
}

.blog-link-container .blog-link {
    font-size: 1.1rem;
    padding: 0.75rem 1.5rem;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    nav .container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .profile-image {
        margin-bottom: 2rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .experience-item,
    .education-item,
    .certification-item {
        padding: 1rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeIn 0.5s ease-out;
}

/* Active Navigation */
nav a.active {
    color: var(--primary-color);
    font-weight: 600;
}