:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --dark: #1e293b;
    --light: #f8fafc;
    --accent: #22d3ee;
    --text: #334155;
    --bg: #f1f5f9;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    background-color: rgba(241, 245, 249, 0.9);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

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

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

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 5rem 0;
    min-height: 80vh;
}

.avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: var(--primary);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 64px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.avatar::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(34, 211, 238, 0.5), transparent);
}

h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 2rem;
}

.buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: white;
}

.tech-stack {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 2rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.tech-icon {
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    padding: 0.75rem;
}

section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    color: var(--secondary);
    text-align: center;
    margin-bottom: 3rem;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.about-image {
    flex: 1;
    position: relative;
    height: 400px;
}

.about-image-container {
    width: 100%;
    height: 100%;
    border-radius: 1rem;
    overflow: hidden;
    background-color: var(--primary);
    position: relative;
}

.code-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(30, 41, 59, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-family: 'Fira Code', monospace;
    padding: 2rem;
    font-size: 0.9rem;
    text-align: left;
    line-height: 1.5;
    overflow: hidden;
}

.code-content {
    opacity: 0.7;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

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

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.card-header {
    padding: 1.5rem;
    background-color: var(--primary);
    color: white;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.card-subtitle {
    color: white;
    opacity: 0.8;
    font-size: 0.9rem;
}

.tag {
    display: inline-block;
    background-color: var(--light);
    color: var(--secondary);
    padding: 0.35rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.skills-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.skill-group h3 {
    color: var(--primary);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.skill-item {
    margin-bottom: 1rem;
    padding: 0.75rem;
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px -3px rgba(0, 0, 0, 0.1);
}

.skill-item span {
    font-weight: 500;
    color: var(--dark);
}

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

.contact-info {
    background-color: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background-color: var(--light);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 1rem;
    color: var(--primary);
}

.contact-text h4 {
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.contact-text p {
    color: var(--secondary);
}

.contact-form {
    background-color: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark);
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.5rem;
    font-size: 1rem;
}

textarea {
    min-height: 150px;
    resize: vertical;
}

button {
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

footer {
    background-color: var(--dark);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

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

.copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.25rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        width: 100%;
        height: 300px;
    }
    
    .skills-container {
        grid-template-columns: 1fr;
    }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}


.no-js section, 
.no-js .hero, 
.no-js .card, 
.no-js .skill-item, 
.no-js .tech-item, 
.no-js .contact-item {
  opacity: 1;
  transform: translateY(0);
}


html.smooth-scroll {
  scroll-behavior: smooth;
}

nav {
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.btn, .card, .skill-item, .social-link {
  transition: all 0.3s ease;
}