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

html, body {
    background-color: #ffffff;
    color: #111827;
    line-height: 1.7;
    font-size: 15px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
.navbar {
    background-color: #ffffff;
    padding: 24px 0 12px;
}

.navbar ul {
    list-style: none;
    display: flex;
    justify-content: flex-start;
    gap: 28px;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-link {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    font-size: 0.95rem;
    text-transform: none;
    letter-spacing: 0.02em;
    transition: color 0.2s ease, border-color 0.2s ease;
    position: relative;
    padding-bottom: 4px;
    border-bottom: 1px solid transparent;
}

.nav-link:hover,
.nav-link.active {
    text-decoration: none;
    color: #111827;
    border-bottom-color: currentColor;
}

/* Main container */
.container {
    max-width: 720px;
    margin: 52px auto 72px;
    padding: 0 20px;
}

/* Typography */
h1 {
    font-size: 2.4rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: -0.04em;
}

h2 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 16px;
    margin-top: 40px;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 12px;
}

p {
    margin-bottom: 16px;
    color: #4b5563;
    font-size: 0.94rem;
}

/* Links */
a {
    color: #111827;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
    color: #000000;
    border-bottom-color: currentColor;
}

/* Content sections */
.content {
    margin-bottom: 32px;
}

.links {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.external-link {
    color: #111827;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.95rem;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.external-link:hover {
    color: #000000;
    border-bottom-color: currentColor;
    transform: translateY(-1px);
}

.arrow {
    font-size: 14px;
}

/* Lists */
.intro ul,
.content ul {
    padding-left: 20px;
    margin-bottom: 16px;
}

.intro li,
.content li {
    margin-bottom: 10px;
    color: #4b5563;
    font-size: 0.98rem;
}

/* Philosophy section */
.philosophy ol {
    padding-left: 20px;
}

.philosophy li {
    margin-bottom: 15px;
    color: #4b5563;
    counter-increment: list-counter;
}

.philosophy li::marker {
    color: #000000;
    font-weight: bold;
}

.project-description {
    color: #4b5563;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.project-link {
    color: #6b7280;
    font-size: 0.85rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.project-link:hover {
    color: #111827;
}

/* Experience section */
.experience-item {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.experience-item:last-child {
    border-bottom: none;
}

.job-title {
    font-weight: 600;
    color: #111827;
}

.company-date {
    color: #6b7280;
    font-style: italic;
    margin-bottom: 8px;
}

/* Responsive design */
@media (max-width: 768px) {
    .navbar ul {
        gap: 16px;
        flex-wrap: wrap;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
    
    .container {
        padding: 0 16px;
        margin-top: 40px;
    }
    
    h1 {
        font-size: 2.1rem;
    }
    
    .links {
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .navbar ul {
        gap: 12px;
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
    
    h1 {
        font-size: 1.8rem;
    }
}