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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --text-color: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --bg-color: #ffffff;
    --bg-secondary: #f8fafc;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background: var(--bg-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

header {
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: color 0.2s ease;
}

.logo:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1.25rem;
}

.social-link {
    color: var(--text-light);
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.hero {
    text-align: center;
    margin-bottom: 5rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    font-weight: 400;
}

.projects-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 5rem;
}

.project-bubble {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    min-height: 160px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.project-bubble:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.bubble-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
}

.bubble-content {
    text-align: center;
    width: 100%;
    padding: 1.5rem;
}

.bubble-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.bubble-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.5;
}

.project-detail {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 3rem 2rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.project-tagline {
    font-size: 1.125rem;
    color: var(--text-light);
}

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

.project-image-container {
    margin-bottom: 2rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.project-image {
    width: 100%;
    height: auto;
    display: block;
}

.project-section {
    background: var(--bg-color);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-section h2 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.project-section p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.project-section ul {
    list-style: none;
    padding-left: 0;
}

.project-section ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.project-section ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: #000000;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid #000000;
}

.project-link:hover {
    background: #333333;
    border-color: #333333;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.project-link svg {
    flex-shrink: 0;
}

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

.tech-tag {
    background: var(--bg-secondary);
    color: var(--text-color);
    padding: 0.375rem 0.875rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.skills-section,
.interests-section {
    margin: 5rem 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
    letter-spacing: -0.03em;
}

.skills-container {
    display: grid;
    gap: 1.5rem;
}

.skill-category {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.skill-category:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.skill-category h3 {
    font-size: 1.25rem;
    color: var(--text-color);
    margin-bottom: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

.skill-tag {
    background: var(--bg-secondary);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.interest-card {
    background: var(--bg-color);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    text-align: left;
}

.interest-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.interest-icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-weight: 600;
}

.interest-card h3 {
    font-size: 1.125rem;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.interest-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.interest-card p:last-child {
    margin-bottom: 0;
}

footer {
    background: var(--bg-color);
    padding: 2rem;
    text-align: center;
    color: var(--text-lighter);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    main {
        padding: 3rem 1.5rem;
    }

    .hero {
        margin-bottom: 3rem;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .projects-container {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 3rem;
    }

    .project-header {
        padding: 2rem 1.5rem;
    }

    .project-header h1 {
        font-size: 2rem;
    }

    .project-tagline {
        font-size: 1rem;
    }

    nav {
        padding: 1rem 1.5rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .interests-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .skills-section,
    .interests-section {
        margin: 3rem 0;
    }

    .skill-category,
    .interest-card {
        padding: 1.5rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .projects-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .interests-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}