:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --link-color: #2563eb;
    --link-hover: #1e40af;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #ffffff;
    --link-color: #60a5fa;
    --link-hover: #93c5fd;
}

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

a:visited {
    color: inherit;
}

.home-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--text-color);
    opacity: 0.6;
    transition: all 0.2s ease;
    border-radius: 50%;
    z-index: 100;
}

.home-link svg {
    width: 20px;
    height: 20px;
}

.home-link:hover {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .home-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    text-align: center;
}

.home main {
    justify-content: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.bio {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--text-color);
    opacity: 0.8;
}

.links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.links a {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

#theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text-color);
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.about-content {
    max-width: 600px;
    margin: 0 auto;
    padding-top: 4rem;
    text-align: left;
}

.about-content section {
    margin-bottom: 3rem;
}

.about-content h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.about-content p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-size: 1rem;
}

#summary p {
    font-weight: normal;
    opacity: 0.9;
}

.about-content ul {
    list-style-position: outside;
    margin-left: 1.2rem;
    margin-bottom: 1.5rem;
}

.about-content li {
    margin-bottom: 0.75rem;
}

.work-item {
    margin-bottom: 2rem;
}

.work-item {
    position: relative;
}

.work-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
    color: var(--text-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.work-item h3 a, .work-item h3 a:visited {
    color: var(--text-color);
    text-decoration: underline;
    font-size: 0.9em;
}

.work-item h3 a:hover {
    opacity: 0.7;
}

.work-item p a, .work-item p a:visited,
.work-item li a, .work-item li a:visited {
    color: var(--text-color);
    text-decoration: underline;
}

.work-item p a:hover, .work-item li a:hover {
    opacity: 0.7;
}

.work-item > a {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--link-color);
    text-decoration: none;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.work-item > a:hover {
    color: var(--link-hover);
    text-decoration: underline;
    opacity: 1;
}

.work-item .meta {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skill-category {
    margin-bottom: 1.5rem;
}

.skill-category h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

#theme-toggle:hover {
    opacity: 1;
}

.loading {
    text-align: center;
    color: var(--text-color);
    opacity: 0.7;
}

#theme-toggle .sun {
    display: none;
}

[data-theme="dark"] #theme-toggle .sun {
    display: block;
}

[data-theme="dark"] #theme-toggle .moon {
    display: none;
}