* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: system-ui, -apple-system, sans-serif;
}

body {
    background-color: #0c1110;
    color: #f3f4f6;
    line-height: 1.5;
    padding: 40px 20px;
}

.main-container {
    max-width: 1050px;
    margin: 0 auto;
}

.hero-section {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 20px;
    margin-bottom: 70px;
    align-items: stretch;
}

.hero-text {
    background-color: #141c19;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 35px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-text h1 {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 15px;
}

.hero-text h1 span {
    color: #34d399;
}

.hero-text p {
    color: #9ca3af;
    font-size: 0.95rem;
    margin-bottom: 25px;
}

.hero-card {
    background-color: #141c19;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.card-avatar {
    font-size: 3.5rem;
    margin-bottom: 15px;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.cert-img {
    width: 100%;
    height: 130px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-card h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.hero-card p {
    font-size: 0.85rem;
    color: #9ca3af;
}

.social-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.social-links a {
    background-color: rgba(52, 211, 153, 0.1);
    border: 1px solid rgba(52, 211, 153, 0.2);
    padding: 8px 14px;
    border-radius: 10px;
    color: #34d399;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: 0.2s;
}

.social-links a:hover {
    background-color: #34d399;
    color: #0c1110;
}

.center-links {
    justify-content: center;
}

.section-block {
    margin-bottom: 70px;
}

.section-title {
    font-size: 1.7rem;
    font-weight: 700;
    margin-bottom: 25px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.tech-card {
    background-color: #141c19;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 25px;
}

.tech-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #34d399;
    margin-bottom: 15px;
}

.badge-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.badge-list span {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 5px 10px;
    border-radius: 8px;
    font-size: 0.8rem;
    color: #e5e7eb;
}

.profile-img {
    width: 100%;
    height: 240px;
    object-fit: cover; 
    border-radius: 12px;
    margin-bottom: 12px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.project-card {
    background-color: #141c19;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    overflow: hidden;
}

.project-banner {
    background-color: #1b2622;
    padding: 25px;
    text-align: center;
    font-weight: bold;
    color: #34d399;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.project-info {
    padding: 20px;
}

.project-info h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.project-info p {
    color: #9ca3af;
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.filter-buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.filter-btn {
    background-color: #141c19;
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #9ca3af;
    padding: 6px 16px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
}

.filter-btn.active, .filter-btn:hover {
    background-color: #34d399;
    color: #0c1110;
    border-color: #34d399;
}

.certs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.cert-card {
    background-color: #141c19;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 20px;
}

.issuer {
    font-size: 0.75rem;
    font-weight: 700;
    color: #fbbf24;
    text-transform: uppercase;
}

.cert-card h4 {
    font-size: 0.95rem;
    margin: 8px 0;
}

.cert-date, .cert-id {
    font-size: 0.75rem;
    color: #9ca3af;
}

.footer-cta {
    text-align: center;
    padding: 50px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-cta h2 {
    font-size: 2rem;
    color: #fbbf24;
    margin-bottom: 20px;
}

@media (max-width: 850px) {
    .hero-section, .tech-grid, .projects-grid, .certs-grid {
        grid-template-columns: 1fr;
    }
}