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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --white: #ffffff;
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    overflow-x: hidden;
}

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

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: fixed;
    top: 20px;
    left: 20px;
    background: var(--primary);
    color: var(--white);
    padding: 12px 24px;
    text-decoration: none;
    border-radius: var(--border-radius);
    z-index: 1000;
    opacity: 0;
    transform: translateY(-100%);
    transition: var(--transition);
}

.skip-link:focus {
    opacity: 1;
    transform: translateY(0);
}

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--primary);
    width: 0%;
    z-index: 1000;
    transition: width 0.3s ease;
}

.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.8rem;
    font-weight: 700;
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link:focus::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    padding: 8px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
    border-radius: 2px;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e0e7ff 100%);
    padding-top: 80px;
}

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

.hero-text h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin: 1rem 0 1.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.badge {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 0.5rem 1.25rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow);
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.profile-box {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 1;
    max-width: 350px;
    margin: 0 auto;
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9), rgba(16, 185, 129, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.profile-box:hover .img-overlay,
.profile-box:focus-within .img-overlay {
    opacity: 1;
}

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

.social-link {
    width: 50px;
    height: 50px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.2rem;
    transition: var(--transition);
    text-decoration: none;
}

.social-link:hover,
.social-link:focus {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    text-align: center;
    margin-bottom: 4rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about {
    padding: 8rem 0;
    background: var(--white);
}

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

.image-container {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 400px;
}

.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-overlay {
    position: absolute;
    inset: 0;
    background: rgba(99, 102, 241, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    opacity: 0;
    transition: var(--transition);
}

.image-container:hover .image-overlay,
.image-container:focus-within .image-overlay {
    opacity: 1;
}

.story-timeline {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--white);
}

.timeline-item.active .timeline-dot {
    background: var(--secondary);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.3);
}

.timeline-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.skills h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    list-style: none;
}

.skill-tag {
    background: var(--bg-light);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 500;
    border: 2px solid transparent;
    transition: var(--transition);
}

.skill-tag:hover,
.skill-tag:focus {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.projects {
    padding: 8rem 0;
    background: var(--bg-light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.project-card {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    background: var(--white);
}

.project-card:hover,
.project-card:focus-within {
    transform: translateY(-12px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.95), rgba(16, 185, 129, 0.95));
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay,
.project-card:focus-within .project-overlay {
    opacity: 1;
}

.project-info h3 {
    color: var(--white);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.project-info p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
}

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

.btn-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--white);
    border-radius: 50px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-link:hover,
.btn-link:focus {
    background: var(--white);
    color: var(--primary);
    transform: translateY(-2px);
}

.contact {
    padding: 8rem 0;
    background: var(--white);
}

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

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 0.25rem;
    width: 30px;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-item a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.contact-item a:hover,
.contact-item a:focus {
    text-decoration: underline;
}

.contact-form {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.form-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group input,
.contact-form textarea {
    padding: 1rem 1.25rem;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.contact-form textarea {
    grid-column: 1 / -1;
    resize: vertical;
    min-height: 120px;
}

.footer {
    background: var(--text-dark);
    color: var(--white);
    text-align: center;
    padding: 2rem 0;
}

.highlight {
    color: var(--secondary);
    font-weight: 600;
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        inset: 0;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transform: translateX(100%);
        transition: var(--transition);
        padding: 2rem;
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .hero-content,
    .about-grid,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group {
        grid-template-columns: 1fr;
    }
    
    .navbar {
        padding: 1rem;
    }
}