:root {
    --bg-color: #ffffff;
    --text-color: #0a0a0a;
    --text-secondary: #5a5a5a;
    --border-color: #e5e5e5;
    --shadow: rgba(0, 0, 0, 0.03);
    --shadow-hover: rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg-color: #0a0a0a;
    --text-color: #f5f5f5;
    --text-secondary: #9a9a9a;
    --border-color: #252525;
    --shadow: rgba(0, 0, 0, 0.4);
    --shadow-hover: rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 19px;
    line-height: 1.75;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.6s cubic-bezier(0.4, 0, 0.2, 1), color 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 810px;
    margin: 0 auto;
    padding: 4rem 2.5rem;
    min-height: 100vh;
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: -0.011em;
}

header {
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}


.site-title {
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s ease;
    letter-spacing: -0.02em;
    position: relative;
}

.site-title:hover {
    color: var(--text-secondary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    font-size: 1.1rem;
    font-weight: 400;
    transition: all 0.2s ease;
}

.nav-link:hover {
    color: var(--text-color);
    text-decoration: underline;
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: auto;
}

.theme-toggle:hover {
    color: var(--text-color);
}

.theme-icon {
    width: 20px;
    height: 20px;
}

/* Landing Section */
.landing-section {
    display: flex;
    flex-direction: column;
    min-height: 70vh;
    justify-content: center;
    padding: 2rem 0;
    animation: fadeIn 0.6s ease-out;
    margin-bottom: 4rem;
}

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

.profile-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 3rem;
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.profile-container {
    position: relative;
    display: inline-block;
    flex-shrink: 0;
}

.profile-container:hover .profile-picture {
    transform: scale(1.05) rotate(3deg);
}

.profile-tooltip {
    position: absolute;
    bottom: 0;
    left: calc(100% + 1rem);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    white-space: nowrap;
    font-weight: 300;
    font-style: italic;
    letter-spacing: 0.01em;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.profile-container:hover .profile-tooltip {
    opacity: 0.7;
}

.name-title {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.profile-picture {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 8px 24px var(--shadow);
    background: var(--border-color);
    position: relative;
    display: block;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}


.profile-picture:not([src]),
.profile-picture[src=""] {
    background: linear-gradient(135deg, var(--border-color) 0%, var(--text-secondary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-color);
    font-size: 3rem;
}

main {
    margin-bottom: 4rem;
}

.section {
    margin-bottom: 4rem;
}

h1 {
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 400;
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    animation: fadeIn 0.8s ease-out 0.3s both;
    line-height: 1.15;
    display: flex;
    align-items: center;
}

h2 {
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    font-size: 2.25rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 2.5rem;
    margin-top: 0;
    color: var(--text-color);
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    line-height: 1.25;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-icon {
    flex-shrink: 0;
    filter: url(#rough-icon);
    opacity: 0.8;
}

.section-icon[src] {
    object-fit: contain;
}

.bio-content {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    max-width: 100%;
}

.bio-header {
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    font-size: 2.25rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    margin-top: 0;
    color: var(--text-color);
    padding-bottom: 0;
    border-bottom: none;
    line-height: 1.25;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.bio-content p {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin-bottom: 0;
    color: var(--text-color);
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
    font-size: 0.95rem;
}

.bio-content a {
    color: var(--text-secondary);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: color 0.2s ease;
}

.bio-content a:hover {
    color: var(--text-color);
}

.bio-content br {
    display: block;
    content: "";
    margin-top: 0.5rem;
}

h3 {
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    letter-spacing: -0.015em;
    line-height: 1.35;
}

.content {
    margin-top: 1.5rem;
}

.content p {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin-bottom: 2rem;
    color: var(--text-color);
    font-weight: 400;
    line-height: 1.8;
    letter-spacing: -0.012em;
}

.links {
    margin-top: 0;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.name-title .links {
    margin-top: 0.25rem;
}

.links a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0;
    transition: all 0.2s ease;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.links a:hover {
    color: var(--text-secondary);
    text-decoration: underline;
}

.separator {
    color: var(--text-secondary);
    font-weight: 300;
}

.project {
    margin-bottom: 3.5rem;
    padding: 0;
    transition: opacity 0.3s ease;
}

.project:hover {
    opacity: 0.85;
}

.project:last-child {
    margin-bottom: 0;
}

.project h3 a {
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

.project h3 a:hover {
    color: var(--text-color);
    text-decoration: underline;
}

.project-description {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin-top: 0.5rem;
    margin-bottom: 0;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
    font-size: 0.95rem;
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: -1rem;
}

.tech-tag {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0;
    background: none;
    border: none;
    font-weight: 400;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    transition: all 0.2s ease;
    text-decoration: none;
}

.tech-tag:hover {
    color: var(--text-color);
    text-decoration: underline;
}

.writing {
    margin-bottom: 3.5rem;
    padding: 0;
    transition: opacity 0.3s ease;
}

.writing:hover {
    opacity: 0.85;
}

.writing:last-child {
    margin-bottom: 0;
}

.writing-date {
    display: block;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-weight: 400;
    font-family: 'Crimson Pro', 'Charter', 'Bitstream Charter', 'Sitka Text', 'Georgia', 'Times New Roman', serif;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.writing-link {
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s ease;
}

.writing-link:hover {
    color: var(--text-color);
    text-decoration: underline;
}

.writing-excerpt {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin-top: 0.5rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: -0.01em;
    font-size: 0.95rem;
}

.writing-page {
    max-width: 100%;
}

.writing-page h1 {
    margin-bottom: 1.5rem;
}

.writing-content {
    margin-top: 2rem;
}

.writing-content p {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin-bottom: 2rem;
    color: var(--text-color);
    font-weight: 400;
    line-height: 1.8;
    letter-spacing: -0.012em;
    font-size: 1rem;
}

footer {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    margin-top: 6rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 300;
    font-style: normal;
    letter-spacing: 0.01em;
}


@media (max-width: 600px) {
    body {
        padding: 2rem 1.5rem;
        font-size: 16px;
    }

    header {
        margin-bottom: 3rem;
    }

    nav {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .profile-picture {
        width: 100px;
        height: 100px;
    }

    .profile-header {
        gap: 1.5rem;
    }
}