/* Base styles */
:root {
    --primary: #3b86f6;
    --primary-dark: #2563EB;
    --secondary: #1F2937;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --white: #FFFFFF;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 5rem;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    line-height: 1.2;
}

.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;
}

/* Header styles */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--gray-800);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: background-color 0.3s, box-shadow 0.3s;
}

#header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
}

.header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

nav.container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  height: 5rem;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin-left: auto;
}

.nav-links a {
    color: var(--gray-800);
    text-decoration: none;
    font-size: larger;
    font-weight: 500;
    transition: color 0.3s;
    padding-left: 30px;
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--gray-800);
    margin: 5px 0;
    transition: 0.3s;
}

/* Hero section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    padding: 5rem 0;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero .highlight {
    color: var(--primary);
}

.hero .subtitle {
    font-size: 1.5rem;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.hero .specialization {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.social-link {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s;
    background-size: 1.25rem;
    background-position: center;
    background-repeat: no-repeat;
}

.social-link:hover {
    transform: translateY(-2px);
}

.social-link.github {
    background-color: var(--gray-800);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M12 0c-6.626 0-12 5.373-12 12 0 5.302 3.438 9.8 8.207 11.387.599.111.793-.261.793-.577v-2.234c-3.338.726-4.033-1.416-4.033-1.416-.546-1.387-1.333-1.756-1.333-1.756-1.089-.745.083-.729.083-.729 1.205.084 1.839 1.237 1.839 1.237 1.07 1.834 2.807 1.304 3.492.997.107-.775.418-1.305.762-1.604-2.665-.305-5.467-1.334-5.467-5.931 0-1.311.469-2.381 1.236-3.221-.124-.303-.535-1.524.117-3.176 0 0 1.008-.322 3.301 1.23.957-.266 1.983-.399 3.003-.404 1.02.005 2.047.138 3.006.404 2.291-1.552 3.297-1.23 3.297-1.23.653 1.653.242 2.874.118 3.176.77.84 1.235 1.911 1.235 3.221 0 4.609-2.807 5.624-5.479 5.921.43.372.823 1.102.823 2.222v3.293c0 .319.192.694.801.576 4.765-1.589 8.199-6.086 8.199-11.386 0-6.627-5.373-12-12-12z'/%3E%3C/svg%3E");
}

.social-link.linkedin {
    background-color: var(--primary);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='white' viewBox='0 0 24 24'%3E%3Cpath d='M19 0h-14c-2.761 0-5 2.239-5 5v14c0 2.761 2.239 5 5 5h14c2.762 0 5-2.239 5-5v-14c0-2.761-2.238-5-5-5zm-11 19h-3v-11h3v11zm-1.5-12.268c-.966 0-1.75-.79-1.75-1.764s.784-1.764 1.75-1.764 1.75.79 1.75 1.764-.783 1.764-1.75 1.764zm13.5 12.268h-3v-5.604c0-3.368-4-3.113-4 0v5.604h-3v-11h3v1.765c1.396-2.586 7-2.777 7 2.476v6.759z'/%3E%3C/svg%3E");
}

.scroll-down {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--primary);
    border-radius: 50%;
    position: relative;
    animation: bounce 2s infinite;
}

.scroll-down::after {
    content: '';
    width: 0.75rem;
    height: 0.75rem;
    border-right: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    margin-top: -0.25rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

/* About section */
.about {
    padding: 5rem 0;
    background-color: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.about h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 0.25rem;
    background-color: var(--primary);
    border-radius: 9999px;
}

.about-content {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.profile-image {
    flex: 1;
    max-width: 300px;
}

.profile-image img {
    width: 100%;
    height: auto;
    border-radius: 50%;
    border: 4px solid var(--gray-100);
    box-shadow: var(--shadow-lg);
}

.about-text {
    flex: 2;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--gray-700);
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: background-color 0.3s, transform 0.3s;
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

/* Skills section */
.skills {
    padding: 5rem 0;
    background-color: var(--gray-50);
}

.skills h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.skills h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 0.25rem;
    background-color: var(--primary);
    border-radius: 9999px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.skill-item {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.skill-header h3 {
    font-size: 1.125rem;
    color: var(--gray-800);
}

.skill-header span {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.skill-bar {
    height: 0.5rem;
    background-color: var(--gray-200);
    border-radius: 9999px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--primary);
    border-radius: 9999px;
    width: 0;
    transition: width 1.5s ease-out;
}

/* Projects section */
.projects {
    padding: 5rem 0;
    background-color: var(--white);
}

.projects h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.projects h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 0.25rem;
    background-color: var(--primary);
    border-radius: 9999px;
}

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

.project-card {
    background-color: var(--white);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--gray-800);
}

.project-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tech-stack span {
    padding: 0.25rem 0.75rem;
    background-color: var(--gray-100);
    color: var(--gray-700);
    border-radius: 9999px;
    font-size: 0.875rem;
}

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

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

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

/* Interests section */
.interests {
    padding: 5rem 0;
    background-color: var(--gray-50);
}

.interests h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.interests h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 0.25rem;
    background-color: var(--primary);
    border-radius: 9999px;
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.interest-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 0.5rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.interest-card:hover {
    transform: translateY(-4px);
}

.interest-icon {
    width: 10rem;
    height: 10rem;
    margin: 0 auto 1.5rem;
    background-color: var(--gray-100);
    border-radius: 0%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: 2rem;
    background-position: center;
    background-repeat: no-repeat;
}

.interest-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--gray-800);
}

.interest-card p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* Contact section */
.contact {
    padding: 5rem 0;
    background-color: var(--white);
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.contact h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5rem;
    height: 0.25rem;
    background-color: var(--primary);
    border-radius: 9999px;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    background-color: var(--gray-50);
    padding: 2rem;
    border-radius: 0.5rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--gray-800);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.info-icon {
    width: 3rem;
    height: 3rem;
    background-color: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: 1.5rem;
    background-position: center;
    background-repeat: no-repeat;
}

.info-text p {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.info-text a {
    color: var(--gray-800);
    text-decoration: none;
    transition: color 0.3s;
}

.info-text a:hover {
    color: var(--primary);
}

#resume-info {
    background-color: var(--gray-50);
    padding: 2rem;
    border-radius: 0.5rem;
}


.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #007BFF;
    color: white;
    border-radius: 5px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    margin-top: 8rem;
    margin-left: 8rem;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #0056b3;
}


.social-section {
    margin-top: 5rem;
}

.social-section p {
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.social-section a {
    color: var(--gray-600);
    margin-left: 2rem;
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
}

.footer-nav a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 3rem;
    height: 3rem;
    background-color: var(--primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, background-color 0.3s;
    box-shadow: var(--shadow-lg);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

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

.arrow-up {
    width: 1rem;
    height: 1rem;
    border-left: 2px solid var(--white);
    border-top: 2px solid var(--white);
    transform: rotate(45deg);
    margin-top: 0.25rem;
}

/* Responsive styles */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        padding: 1rem;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .profile-image {
        margin: 0 auto;
    }

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

    .btn {
        margin-top: 5rem;
        margin-left: 7rem;
    }

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

    .footer-nav {
        justify-content: center;
    }
}

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

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

[data-aos] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s, transform 0.8s;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}