/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid #e5e5e5;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    color: #2563eb;
    font-weight: 600;
}

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

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #2563eb;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-role {
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-bottom: 1.25rem;
    opacity: 0.95;
}

.hero-highlights {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-highlight {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 999px;
    padding: 0.5rem 1.25rem;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: #2563eb;
    color: white;
    border-color: #2563eb;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 80px 0;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    color: #1f2937;
}

/* About Section */
.about {
    background: white;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: #6b7280;
}

.about-highlights {
    margin-bottom: 2.5rem;
    background: #f8fafc;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 1.5rem 1.75rem;
}

.about-highlights h3 {
    font-size: 1.2rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.about-highlights ul {
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.about-highlights li {
    position: relative;
    padding-left: 1.75rem;
    color: #4b5563;
}

.about-highlights li::before {
    content: '';
    position: absolute;
    top: 0.6rem;
    left: 0.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #2563eb;
}

.tech-stack h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #374151;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.tech-item {
    background: #f8fafc;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
}

.tech-item:hover {
    border-color: #2563eb;
    transform: translateY(-2px);
}

.section-intro {
    max-width: 720px;
    margin: 0 auto 2.5rem;
    text-align: center;
    font-size: 1.1rem;
    color: #4b5563;
    line-height: 1.8;
}

/* Expertise Section */
.expertise {
    background: #f5f7ff;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.expertise-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid #e5e7eb;
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
}

.expertise-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(37, 99, 235, 0.12);
}

.expertise-card i {
    font-size: 2rem;
    color: #2563eb;
    margin-bottom: 1.25rem;
}

.expertise-card h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    color: #1f2937;
}

.expertise-card p {
    color: #4b5563;
    line-height: 1.7;
}

/* Experience Section */
.experience {
    background: white;
}

.experience-timeline {
    display: grid;
    gap: 2rem;
}

.experience-item {
    background: #f8fafc;
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid #e5e7eb;
    position: relative;
    padding-left: 2.75rem;
}

.experience-item::before {
    content: '';
    position: absolute;
    top: 2rem;
    left: 1rem;
    bottom: 2rem;
    width: 4px;
    background: linear-gradient(180deg, #2563eb 0%, #764ba2 100%);
    border-radius: 999px;
}

.experience-header {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.experience-header h3 {
    font-size: 1.3rem;
    color: #1f2937;
}

.experience-date {
    font-weight: 500;
    color: #2563eb;
    background: rgba(37, 99, 235, 0.1);
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
}

.experience-item p {
    color: #4b5563;
    margin-bottom: 1.2rem;
    line-height: 1.7;
}

.experience-item ul {
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.experience-item li {
    position: relative;
    padding-left: 1.5rem;
    color: #4b5563;
}

.experience-item li::before {
    content: '\2022';
    position: absolute;
    left: 0;
    color: #2563eb;
}

/* Competitive Section */
.competitive {
    background: #f9fafb;
}

.competitive-content {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 2.5rem;
    align-items: stretch;
}

.competitive-summary p {
    font-size: 1.1rem;
    color: #4b5563;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.competitive-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: white;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 10px 25px rgba(76, 106, 255, 0.08);
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 600;
    color: #2563eb;
    margin-bottom: 0.35rem;
}

.stat-label {
    font-size: 0.95rem;
    color: #6b7280;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.competitive-links {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.08);
    align-self: center;
}

.competitive-links h3 {
    font-size: 1.2rem;
    color: #1f2937;
    margin-bottom: 1rem;
}

.competitive-grid {
    display: grid;
    gap: 1rem;
}

.competitive-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: white;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    text-decoration: none;
    color: #1f2937;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.competitive-card:hover {
    transform: translateX(6px);
    border-color: #2563eb;
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.12);
    color: #1f2937;
}

.competitive-card i {
    font-size: 1.5rem;
    color: #2563eb;
}

.competitive-card .platform {
    display: block;
    font-weight: 600;
    color: #1f2937;
}

.competitive-card .handle {
    font-size: 0.95rem;
    color: #6b7280;
}

.tech-item i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: #2563eb;
}

/* Projects Section */
.projects {
    background: #f9fafb;
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    border: 2px solid #e5e7eb;
    background: white;
    color: #6b7280;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    border-color: #2563eb;
    background: #2563eb;
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.1);
}

.project-header {
    padding: 1.5rem;
    border-bottom: 1px solid #f3f4f6;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.project-description {
    color: #6b7280;
    line-height: 1.6;
}

.project-stats {
    display: flex;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: #f9fafb;
    font-size: 0.875rem;
    color: #6b7280;
}

.project-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.project-footer {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-languages {
    display: flex;
    gap: 0.5rem;
}

.language-tag {
    padding: 0.25rem 0.75rem;
    background: #e5e7eb;
    color: #374151;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 500;
}

.project-links {
    display: flex;
    gap: 0.5rem;
}

.project-link {
    padding: 0.5rem;
    color: #6b7280;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.project-link:hover {
    color: #2563eb;
    background: #f3f4f6;
}

/* Contact Section */
.contact {
    background: white;
    text-align: center;
}

.contact-content p {
    font-size: 1.1rem;
    color: #6b7280;
    margin-bottom: 2rem;
}

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

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: #f8fafc;
    color: #374151;
    text-decoration: none;
    border-radius: 10px;
    border: 2px solid #e5e7eb;
    transition: all 0.3s ease;
    font-weight: 500;
}

.contact-link:hover {
    border-color: #2563eb;
    color: #2563eb;
    transform: translateY(-2px);
}

.contact-link i {
    font-size: 1.25rem;
}

/* Footer */
footer {
    background: #1f2937;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: #6b7280;
}

.loading i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }

    .hero-role {
        font-size: 1.3rem;
    }

    .hero-highlights {
        gap: 0.5rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-links {
        flex-direction: column;
        align-items: center;
    }
    
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }

    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .experience-item {
        padding-left: 2rem;
    }

    .experience-item::before {
        left: 0.75rem;
    }

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

    .competitive-links {
        align-self: stretch;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    h2 {
        font-size: 2rem;
    }

    .hero-role {
        font-size: 1.15rem;
    }

    .hero-highlights {
        flex-direction: column;
        align-items: stretch;
    }

    .stat-card {
        padding: 1rem;
    }

    .experience-item {
        padding: 1.75rem;
        padding-left: 2.25rem;
    }
}