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

/* dark theme colors */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #151515;
    --bg-tertiary: #1a1a1a;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: # https://www.gem.com/scheduling/schedule/1ce55bb7-3307-4103-9aa6-1c4ea888d52o27272a;
    --link-color: #60a5fa;
    --link-hover: #93c5fd;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
}

/* sidebar navigation */
.sidebar {
    width: 200px;
    background-color: var(--bg-secondary);
    padding: 2rem 1rem;
    position: fixed;
    height: 100vh;
    border-right: 1px solid var(--border-color);
}

.logo {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    display: block;
}

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

.nav-links {
    list-style: none;
}

.nav-links li {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: block;
    padding: 0.6rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.2s;
}

.nav-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--accent);
    color: white;
}

/* main content area */
.content {
    margin-left: 200px;
    padding: 3rem;
    max-width: 900px;
    flex: 1;
}

/* hide/show sections */
.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* home section */
.hero {
    margin-bottom: 3rem;
    display: flex;
    align-items: flex-start;
    gap: 3rem;
}

.hero-content {
    flex: 1;
}

.hero-ascii {
    color: var(--link-color);
    font-size: 1rem;
    line-height: 1.2;
    margin: 0;
    font-family: monospace;
}

.greeting {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.intro {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.features {
    margin-top: 2rem;
}

.features > p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.feature-link {
    color: var(--link-color);
    text-decoration: none;
}

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

/* general heading styles */
h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* about section */
.about-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-content p {
    margin-bottom: 1.5rem;
}

.me-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.me-section:last-child {
    border-bottom: none;
}

.me-section h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin: 1rem 0;
}

.me-image {
    width: 100%;
    max-width: 100%;
    height: 300px;
    object-fit: cover;
    object-position: center top;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.image-grid .me-image {
    height: 350px;
}

.keyboard-image {
    transform: rotate(-90deg);
    height: 400px;
    width: 400px;
    margin: 2rem auto;
}

@media (max-width: 768px) {
    .image-grid {
        grid-template-columns: 1fr;
    }

    .me-image {
        height: 250px;
    }

    .image-grid .me-image {
        height: 300px;
    }

    .keyboard-image {
        height: 400px;
    }
}

/* experience section */
.experience-item {
    margin-bottom: 2rem;
}

.experience-list {
    list-style: disc;
    margin-left: 1.5rem;
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.experience-list li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.experience-tech {
    color: var(--text-secondary);
    margin-top: 1rem;
}

.skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 1rem;
}

.skill-tag {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* projects section */
.projects-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    height: 850px;
}

.project-column {
    overflow-y: scroll;
    padding-right: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    background-color: var(--bg-secondary);
}

.column-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-secondary);
    z-index: 1;
}

.project-card {
    background-color: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s, border-color 0.2s;
    margin-bottom: 1.5rem;
}

.project-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.project-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.project-description {
    color: var(--text-secondary);
    margin: 1rem 0;
    line-height: 1.6;
}

.project-tech {
    color: var(--text-secondary);
    margin: 1rem 0;
    font-size: 0.9rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.tag {
    background-color: var(--bg-tertiary);
    color: var(--accent);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

.project-link {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
}

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

/* blog section */
.blog-posts {
    display: grid;
    gap: 2rem;
}

.blog-post {
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.blog-post:last-child {
    border-bottom: none;
}

.post-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.post-title {
    color: var(--link-color);
    text-decoration: none;
}

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

.post-excerpt {
    color: var(--text-secondary);
    margin-top: 0.8rem;
    line-height: 1.6;
}

/* contact section */
.contact-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-content p {
    margin-bottom: 1.5rem;
}

.contact-info {
    margin-top: 2rem;
}

.contact-info p {
    margin-bottom: 1rem;
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.contact-link {
    color: var(--link-color);
    text-decoration: none;
}

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

.email-copy {
    color: var(--link-color);
    cursor: pointer;
    text-decoration: none;
    position: relative;
}

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

.email-copy.copied::after {
    content: "Copied!";
    position: absolute;
    left: 100%;
    margin-left: 10px;
    background-color: var(--accent);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* responsive styles */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .content {
        margin-left: 0;
        padding: 2rem 1.5rem;
    }

    .greeting {
        font-size: 2rem;
    }

    .intro {
        font-size: 1.1rem;
    }

    .projects-container {
        grid-template-columns: 1fr;
        max-height: none;
    }

    .project-column {
        overflow-y: visible;
    }

    .hero {
        flex-direction: column;
        gap: 2rem;
    }

    .hero-ascii {
        font-size: 0.8rem;
    }
}