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

:root {
    --primary-blue: #2d5f7a;
    --secondary-blue: #5a9bb8;
    --light-blue: #a8c5d6;
    --bg-light: #e8eef2;
    --text-dark: #1a3a4a;
    --white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--light-blue) 100%);
    color: var(--text-dark);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease-out;
}

.banner {
    max-width: 600px;
    max-height: 200px;
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.main-content {
    flex: 1;
    text-align: center;
    animation: fadeIn 1s ease-out;
}

.title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.tagline {
    font-size: 1.5rem;
    color: var(--secondary-blue);
    margin-bottom: 2rem;
    font-weight: 300;
}

.description {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(45, 95, 122, 0.1);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.description p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.description p:last-child {
    margin-bottom: 0;
}

.emphasis {
    font-weight: 600;
    color: var(--primary-blue);
}

.services {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.service-item {
    background: var(--white);
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(45, 95, 122, 0.08);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary-blue);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(45, 95, 122, 0.15);
}

.icon {
    font-size: 1.5rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--white);
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(45, 95, 122, 0.1);
    transition: all 0.3s ease;
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(45, 95, 122, 0.2);
}

.social-link.linkedin:hover {
    background: #0077b5;
    color: var(--white);
}

.social-link.github:hover {
    background: #333;
    color: var(--white);
}

.social-link.email:hover {
    background: var(--secondary-blue);
    color: var(--white);
}

.social-link.twitter:hover {
    background: #1da1f2;
    color: var(--white);
}

.social-link.whatsapp:hover {
    background: #25d366;
    color: var(--white);
}

.footer {
    text-align: center;
    padding: 2rem 0 1rem;
    color: var(--primary-blue);
    font-size: 0.9rem;
    margin-top: 3rem;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .banner {
        max-width: 90%;
    }
    
    .description {
        padding: 1.5rem;
    }
    
    .description p {
        font-size: 1rem;
    }
    
    .services {
        gap: 1rem;
    }
    
    .social-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .social-link {
        justify-content: center;
    }
}
.contact-section {
    margin-top: 2.5rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(45, 95, 122, 0.1);
    text-align: center;
}

.contact-title {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-subtitle {
    font-size: 1.1rem;
    color: var(--secondary-blue);
    margin-bottom: 2rem;
    font-weight: 400;
}

.whatsapp-contact {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    transition: all 0.3s ease;
    max-width: 300px;
}

.whatsapp-contact:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    background: linear-gradient(135deg, #128c7e 0%, #25d366 100%);
}

.whatsapp-contact svg {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.whatsapp-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.whatsapp-main {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.2;
}

.whatsapp-sub {
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 400;
    line-height: 1.2;
}
.technologies-section {
    margin-top: 2.5rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(45, 95, 122, 0.1);
    text-align: center;
}

.technologies-title {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.technologies {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.tech-item {
    background: var(--bg-light);
    padding: 1rem 2rem;
    border-radius: 8px;
    border: 2px solid rgba(45, 95, 122, 0.1);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary-blue);
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-2px);
    background: var(--white);
    border-color: var(--secondary-blue);
    box-shadow: 0 4px 15px rgba(45, 95, 122, 0.15);
}

.tech-icon {
    font-size: 1.5rem;
}

.tech-name {
    font-size: 1rem;
}

/* Mobile-first optimizations */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .banner {
        max-width: 95%;
        max-height: 150px;
    }
    
    .description {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .description p {
        font-size: 1rem;
        line-height: 1.7;
    }
    
    .technologies-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .technologies-section {
        padding: 1.5rem;
        margin-top: 2rem;
        margin-bottom: 2rem;
    }
    
    .technologies {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .tech-item {
        padding: 1rem 2rem;
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
    
    .contact-section {
        padding: 1.5rem;
        margin-top: 2rem;
        margin-bottom: 2rem;
    }
    
    .contact-title {
        font-size: 1.5rem;
    }
    
    .contact-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .whatsapp-contact {
        padding: 1.2rem 1.5rem;
        max-width: 100%;
        width: 100%;
        justify-content: center;
    }
    
    .whatsapp-contact svg {
        width: 28px;
        height: 28px;
    }
    
    .whatsapp-text {
        align-items: center;
        text-align: center;
    }
    
    .whatsapp-main {
        font-size: 1rem;
    }
    
    .whatsapp-sub {
        font-size: 0.85rem;
    }
    
    .social-links {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        margin-top: 2rem;
    }
    
    .social-link {
        justify-content: center;
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .footer {
        margin-top: 2rem;
        padding: 1.5rem 0 1rem;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .container {
        padding: 0.75rem;
    }
    
    .banner {
        max-height: 120px;
    }
    
    .description {
        padding: 1.25rem;
    }
    
    .description p {
        font-size: 0.95rem;
    }
    
    .contact-section {
        padding: 1.25rem;
    }
    
    .whatsapp-contact {
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .whatsapp-contact svg {
        width: 32px;
        height: 32px;
    }
    
    .tech-item {
        padding: 0.75rem 1.5rem;
    }
}