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

:root {
    --primary: #000000;
    --secondary: #FFFFFF;
    --accent: #0066FF;
    --gray-dark: #333;
    --gray-medium: #666;
    --gray-light: #999;
    --gray-lighter: #f5f5f5;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--primary);
    background-color: var(--secondary);
    line-height: 1.6;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: var(--secondary);
    border-bottom: 1px solid var(--gray-lighter);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

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

.nav-link {
    text-decoration: none;
    color: var(--gray-medium);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--gray-lighter) 100%);
}

.hero-wrapper {
    display: flex;
    align-items: center;
    gap: 4rem;
    padding: 2rem 0;
}

.hero-content {
    flex: 1;
    text-align: left;
}

.hero-image {
    flex: 0 0 auto;
}

.hero-image img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -2px;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 12px 28px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #0052cc;
    transform: translateY(-2px);
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator span {
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--gray-medium);
    border-radius: 25px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 10px;
    background-color: var(--gray-medium);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 0; top: 10px; }
    50% { opacity: 1; }
    100% { opacity: 0; top: 20px; }
}

/* Section Styles */
section {
    padding: 80px 0;
}

/* Quick Info Section */
.quick-info {
    padding: 40px 0;
    background-color: var(--secondary);
    border-bottom: 1px solid var(--gray-lighter);
}

.info-items {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    color: var(--gray-dark);
}

.info-icon {
    font-size: 1.25rem;
}

.info-text {
    font-weight: 500;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent);
}

/* About Section */
.about {
    background-color: var(--gray-lighter);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--gray-dark);
    line-height: 1.8;
}

.about-stats {
    display: grid;
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--secondary);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-medium);
    font-size: 0.9rem;
}

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

.skill-card {
    padding: 2rem;
    background-color: var(--secondary);
    border: 1px solid var(--gray-lighter);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border-color: var(--accent);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.skill-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.skill-card p {
    color: var(--gray-medium);
    line-height: 1.6;
}

/* Portfolio Section */
.portfolio {
    background-color: var(--gray-lighter);
}

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

.filter-btn {
    padding: 8px 20px;
    background-color: transparent;
    border: 2px solid var(--gray-light);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--accent);
    color: var(--secondary);
    border-color: var(--accent);
}

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

.portfolio-item {
    background-color: var(--secondary);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.portfolio-item.hidden {
    display: none;
}

.portfolio-image {
    height: 250px;
    overflow: hidden;
    background-color: var(--gray-lighter);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.portfolio-image img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 20px;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-medium);
    background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
}

.portfolio-info {
    padding: 1.5rem;
}

.portfolio-info h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.portfolio-info p {
    color: var(--gray-medium);
    margin-bottom: 1rem;
}

.portfolio-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.portfolio-tags span {
    padding: 4px 12px;
    background-color: var(--gray-lighter);
    border-radius: 15px;
    font-size: 0.85rem;
    color: var(--gray-dark);
}

.portfolio-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.portfolio-link:hover {
    transform: translateX(5px);
}

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

.contact-info p {
    margin-bottom: 2rem;
    color: var(--gray-dark);
    line-height: 1.8;
}

.contact-details {
    margin-bottom: 2rem;
}

.contact-item {
    margin-bottom: 1rem;
}

.contact-label {
    font-weight: 600;
    margin-right: 0.5rem;
}

.contact-item a {
    color: var(--accent);
    text-decoration: none;
}

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

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

.social-links a {
    padding: 10px 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: var(--secondary);
    text-decoration: none;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--accent);
    transform: translateY(-3px);
}

.contact-cta {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
}

.btn-large {
    font-size: 1.1rem;
    padding: 16px 40px;
}

/* Footer */
.footer {
    background-color: var(--primary);
    color: var(--secondary);
    text-align: center;
    padding: 2rem 0;
}

.footer-message-btn {
    font-size: 2rem;
    text-decoration: none;
    padding: 10px 20px;
    background-color: var(--secondary);
    border-radius: 50%;
    display: inline-block;
    transition: all 0.3s ease;
}

.footer-message-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary);
        flex-direction: column;
        padding: 1rem 0;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero-wrapper {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        text-align: center;
    }

    .hero-image img {
        width: 200px;
        height: 200px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}