:root {
  --bg: #0e0e0e;
  --fg: #eaeaea;
  --muted: #b0b0b0;
  --line: #2a2a2a;
  --link: #a8c0ff;
  --link-hover: #c3d4ff;
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 16px;
  --s-4: 24px;
  --s-5: 32px;
  --s-6: 48px;
  --fs-h1: clamp(28px, 4vw, 40px);
  --fs-h2: clamp(16px, 2.4vw, 20px);
  --fs-body: clamp(15px, 2vw, 17px);
}

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

html,
body {
  height: 100%;
}

body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  font-size: var(--fs-body);
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--s-6) var(--s-3);
}

.title {
  font-size: var(--fs-h1);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: var(--s-2);
  transition: color 0.3s ease;
}

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

.description {
  color: var(--muted);
  margin-bottom: var(--s-5);
}

.section-title {
  font-size: var(--fs-h2);
  font-weight: 600;
  color: var(--fg);
  margin: var(--s-5) 0 var(--s-3);
}

.avatar {
  width: 104px;
  height: 104px;
  border-radius: 9999px;
  object-fit: cover;
  filter: grayscale(100%);
  border: 1px solid var(--line);
  display: block;
  margin: 0 auto var(--s-4);
}

.video {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  margin-bottom: var(--s-4);
}

@supports not (aspect-ratio: 16/9) {
  .video {
    height: 0;
    padding-bottom: 56.25%;
  }
}

.video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.video-caption {
  margin-top: var(--s-2);
  color: var(--muted);
  font-size: 0.95em;
  text-align: center;
}

.book-list,
.list {
  list-style: disc;
  padding-left: 20px;
  max-width: 720px;
  margin: var(--s-4) auto;
  text-align: left;
}

.book-list li,
.list li {
  margin-bottom: var(--s-2);
  color: var(--muted);
}

.book-list a,
.list a {
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.book-list a:hover,
.list a:hover {
  color: var(--link-hover);
  border-color: var(--link-hover);
}

.book-list small,
.list small {
  color: var(--muted);
}

a {
  outline: none;
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.hr {
  height: 1px;
  background: var(--line);
  margin: var(--s-5) 0;
}

.social-list {
  list-style: none;
  padding: 0;
  max-width: 720px;
  margin: var(--s-4) auto;
  text-align: left;
}

.social-list li {
  margin-bottom: var(--s-2);
  font-size: 1rem;
  color: var(--muted);
  line-height: 1.6;
}

.social-list a {
  color: var(--link);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
  border-bottom: 1px solid transparent;
}

.social-list a:hover {
  color: var(--link-hover);
  border-color: var(--link-hover);
}

.github-cta {
  max-width: 720px;
  margin: var(--s-4) auto;
  text-align: center;
  padding: var(--s-4);
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.github-cta p {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: var(--s-2);
}

.github-link {
  display: inline-block;
  margin: var(--s-2) 0;
  font-weight: 600;
  color: var(--link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.github-hint {
  font-size: 0.95rem;
  color: var(--muted);
  margin-top: var(--s-2);
}

.spotify {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  margin: var(--s-4) 0;
}

.spotify iframe {
  width: 100%;
  max-width: 720px;
  border: none;
  background: #121212;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.05);
}

@media (max-width: 480px) {
  .title {
    font-size: 2.2rem;
  }
  .section-title {
    font-size: 1.1rem;
  }
  .avatar {
    width: 88px;
    height: 88px;
  }
}