* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #0a0a0a;
    color: #e4e4e7;
    line-height: 1.6;
}
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem 3rem;
}
header {
    text-align: center;
    padding: 2rem 0 1.5rem;
}
header.hero {
    padding: 3rem 0 2rem;
}
header a {
    text-decoration: none;
    color: inherit;
}
h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: #fff;
}
.tagline {
    color: #71717a;
    margin-top: 0.5rem;
    font-size: 1rem;
}
nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1.25rem 0;
    margin: 0 0 2rem 0;
    border-bottom: 1px solid #27272a;
}
nav a {
    color: #a1a1aa;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.15s;
}
nav a:hover {
    color: #fff;
}
nav a[aria-current="page"] {
    color: #e4e4e7;
}
section {
    padding: 2rem 0;
}
h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: #fff;
}
h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.4rem;
}
a.back-link {
    display: none;
}
p {
    color: #a1a1aa;
}
.btn {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.5rem 1rem;
    background: none;
    border: 1px solid #39393e;
    border-radius: 6px;
    color: #e4e4e7;
    text-decoration: none;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}
.btn:hover {
    border-color: #71717a;
    color: #fff;
}
.project-grid {
    display: grid;
    gap: 1rem;
}
.project-card {
    display: block;
    padding: 1.25rem 1.5rem;
    border: 1px solid #27272a;
    border-radius: 10px;
    text-decoration: none;
    transition: border-color 0.15s, background 15s;
    background: #0f0f11;
}
.project-card:hover {
    border-color: #3f3f46;
    background: #18181b;
}
.project-card h3 {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}
.project-card h3 .year {
    color: #52525b;
    font-size: 0.85rem;
    font-weight: 400;
}
.project-card p {
    font-size: 0.9rem;
    color: #a1a1aa;
    margin-bottom: 0.75rem;
    line-height: 1.5;
    max-width: 580px;
}
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: 0.75rem;
}
.tags span {
    font-size: 0.7rem;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    background: #18181b;
    color: #71717a;
    border: 1px solid #27272a;
}
.card-links {
    display: flex;
    gap: 1rem;
}
.link-icon {
    font-size: 0.8rem;
    color: #52525b;
    text-decoration: none;
    transition: color 0.15s;
}
.link-icon:hover {
    color: #a1a1aa;
}
.no-projects {
    text-align: center;
    color: #3f3f46;
    font-style: italic;
    padding: 3rem 0;
    font-size: 0.95rem;
}
#contactForm {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}
#contactForm label {
    font-size: 0.85rem;
    font-weight: 500;
    color: #71717a;
    margin-top: 0.25rem;
}
#contactForm input,
#contactForm textarea {
    padding: 0.6rem 0.75rem;
    border: 1px solid #27272a;
    border-radius: 6px;
    background: #0f0f0f;
    color: #e4e4e7;
    font: inherit;
    font-size: 0.9rem;
    transition: border-color 0.15s;
}
#contactForm input:focus,
#contactForm textarea:focus {
    outline: none;
    border-color: #71717a;
}
#contactForm .btn {
    align-self: flex-start;
}
.form-ok {
    color: #4ade80;
    margin-top: 1rem;
    font-size: 0.9rem;
}
.form-err {
    color: #f87171;
    margin-top: 1rem;
    font-size: 0.9rem;
}
footer {
    text-align: center;
    padding: 3rem 0;
    border-top: 1px solid #27272a;
    margin-top: 2rem;
    color: #3f3f40;
    font-size: 0.85rem;
}