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

:root {
    --color-text: #0a0a0a;
    --color-text-medium: #525252;
    --color-text-light: #a3a3a3;
    --color-background: #fafafa;
    --color-surface: #ffffff;
    --color-accent: #0066ff;
    --color-accent-hover: #0052cc;
    --color-border: #e5e5e5;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-serif: "Crimson Text", "Georgia", "Times New Roman", serif;
    --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --max-width: 680px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-2xl: 120px;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
    font-family: var(--font-serif);
}

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

a:hover {
    color: var(--color-accent-hover);
}

p {
    margin-bottom: 16px;
}

p:last-child {
    margin-bottom: 0;
}

/* Navigation */
.nav {
    border-bottom: 1px solid var(--color-border);
    padding: 28px 0;
    position: sticky;
    top: 0;
    background: rgba(250, 250, 250, 0.8);
    backdrop-filter: blur(12px);
    z-index: 100;
    box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.03);
}

.nav-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 18px;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-medium);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.15s ease;
    font-weight: 400;
}

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-2xl) 32px 80px;
}

/* Hero section */
.hero {
    margin-bottom: 96px;
    display: flex;
    align-items: flex-start;
    gap: 48px;
    justify-content: space-between;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 42px;
    line-height: 1.35;
    font-weight: 400;
    margin-bottom: 0;
    color: var(--color-text);
    letter-spacing: -0.015em;
    max-width: 620px;
}

.hero-photo {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.04);
}

.status-box {
    background: transparent;
    border: none;
    padding: 0;
    margin-bottom: 0;
}

.status-label {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-light);
    margin-bottom: 16px;
    font-weight: 500;
}

.status-text {
    font-size: 18px;
    color: var(--color-text-medium);
    line-height: 1.7;
    max-width: 600px;
}

/* Sections */
section {
    margin-bottom: 96px;
}

.section-title {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 32px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

/* Credentials */
.credentials {
    background: var(--color-surface);
    padding: 40px;
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.credential-list {
    list-style: none;
}

.credential-list li {
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 17px;
    line-height: 1.7;
    color: var(--color-text-medium);
}

.credential-list li:first-child {
    padding-top: 0;
}

.credential-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.credential-list li strong {
    color: var(--color-text);
    font-weight: 500;
}

/* Artifacts */
.artifact-grid {
    display: grid;
    gap: 16px;
}

.artifact-card {
    display: block;
    padding: 32px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: 2px;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.artifact-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--color-text-light);
}

.artifact-card:hover h3 {
    color: var(--color-accent);
}

.artifact-card h3 {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    transition: color 0.2s ease;
    color: var(--color-text);
}

.artifact-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

/* Pathways */
.pathway-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.pathway-card {
    padding: 0;
    background: transparent;
    border-radius: 0;
}

.pathway-card h3 {
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text-medium);
}

.pathway-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.6;
}

.pathway-card a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.15s ease;
}

.pathway-card a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

/* CTA */
.cta {
    text-align: left;
    padding: 48px 0;
    border-top: 1px solid var(--color-border);
    margin-top: 40px;
}

.cta h2 {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 24px;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.cta-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.cta-button, .cta-button-secondary {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.cta-button {
    background: var(--color-text);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cta-button:hover {
    background: var(--color-text-medium);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.cta-button-secondary {
    background: var(--color-surface);
    color: var(--color-text-medium);
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.cta-button-secondary:hover {
    border-color: var(--color-text);
    color: var(--color-text);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* Footer */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 48px 32px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 13px;
}

/* Content pages */
.content-header {
    margin-bottom: 64px;
}

.content-header h1 {
    font-size: 36px;
    font-weight: 400;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.content-header p {
    font-size: 18px;
    color: var(--color-text-light);
    line-height: 1.7;
    max-width: 600px;
}

.case-study {
    margin-bottom: 64px;
    padding-bottom: 64px;
    border-bottom: 1px solid var(--color-border);
}

.case-study:last-child {
    border-bottom: none;
}

.case-study h3 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 24px;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.case-study h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-light);
    margin-top: 24px;
    margin-bottom: 12px;
    font-weight: 500;
}

.case-study ul {
    margin-left: 20px;
    margin-bottom: 16px;
}

.case-study li {
    margin-bottom: 8px;
    line-height: 1.7;
    color: var(--color-text-medium);
}

.case-study .tag {
    display: inline-block;
    font-size: 13px;
    color: var(--color-text-light);
    background: transparent;
    padding: 0;
    border-radius: 0;
    margin-top: 16px;
    font-style: italic;
}

.writing-list {
    list-style: none;
}

.writing-item {
    padding: 28px 0;
    border-bottom: 1px solid var(--color-border);
}

.writing-item:first-child {
    padding-top: 0;
}

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

.writing-item h3 {
    font-size: 17px;
    font-weight: 500;
    margin-bottom: 8px;
}

.writing-item a {
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.15s ease;
}

.writing-item a:hover {
    color: var(--color-accent);
}

.writing-item .meta {
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: 8px;
}

.writing-item p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Responsive */
@media (max-width: 640px) {
    :root {
        --spacing-xl: 48px;
        --spacing-2xl: 72px;
    }

    .nav {
        padding: 20px 0;
    }

    .nav-content {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
        padding: 0 24px;
    }

    .nav-links {
        gap: 24px;
    }

    .container {
        padding: 72px 24px 64px;
    }

    .hero {
        flex-direction: column-reverse;
        gap: 32px;
        align-items: center;
    }

    .hero-photo {
        width: 100px;
        height: 100px;
    }

    .hero-title {
        font-size: 32px;
        line-height: 1.3;
    }

    .credentials {
        padding: 28px;
    }

    .artifact-card {
        padding: 24px;
    }

    .pathway-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .content-header h1 {
        font-size: 32px;
    }

    section {
        margin-bottom: 64px;
    }
}