@layer reset, base, components, utilities;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  body,
  h1,
  h2,
  h3,
  h4,
  p,
  ul,
  ol,
  figure,
  blockquote {
    margin: 0;
  }

  img {
    display: block;
    max-width: 100%;
  }
}

@layer base {
  :root {
    --color-canvas: oklch(96.5% 0.015 80);
    --color-surface: oklch(99% 0.006 80);
    --color-ink: oklch(15% 0.04 280);
    --color-muted: oklch(43% 0.035 270);
    --color-line: oklch(87% 0.02 85);
    --color-accent: oklch(62% 0.12 190);
    --color-accent-strong: oklch(50% 0.14 190);
    --color-warm: oklch(82% 0.09 75);
    --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    --container: 72rem;
    --radius: 1.25rem;
    --shadow: 0 24px 70px oklch(15% 0.04 280 / 0.08);
  }

  html {
    color: var(--color-ink);
    background: var(--color-canvas);
    font-family: var(--font-sans);
    line-height: 1.6;
    scroll-behavior: smooth;
  }

  body {
    min-height: 100vh;
    background:
      radial-gradient(circle at 15% 10%, oklch(87% 0.09 75 / 0.45), transparent 28rem),
      radial-gradient(circle at 85% 0%, oklch(77% 0.08 190 / 0.25), transparent 24rem),
      var(--color-canvas);
  }

  a {
    color: inherit;
    text-decoration-color: oklch(62% 0.12 190 / 0.45);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
  }

  a:hover {
    color: var(--color-accent-strong);
  }

  code,
  pre {
    font-family: var(--font-mono);
  }
}

@layer components {
  .site-shell {
    margin: 0 auto;
    max-width: var(--container);
    padding: 1.25rem;
  }

  .site-header {
    align-items: center;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 0 3.5rem;
  }

  .site-header__brand {
    align-items: center;
    display: inline-flex;
    gap: 0.75rem;
    font-weight: 700;
    text-decoration: none;
  }

  .site-header__mark {
    align-items: center;
    background: var(--color-ink);
    border-radius: 999px;
    color: var(--color-canvas);
    display: inline-flex;
    height: 2.25rem;
    justify-content: center;
    width: 2.25rem;
  }

  .site-nav {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    justify-content: flex-end;
  }

  .site-nav__link {
    color: var(--color-muted);
    font-size: 0.95rem;
    text-decoration: none;
  }

  .site-nav__link:hover {
    color: var(--color-ink);
  }

  .hero {
    display: grid;
    gap: 2rem;
    grid-template-columns: minmax(0, 1fr) 20rem;
    padding: 1rem 0 5rem;
  }

  .hero__eyebrow,
  .section-label {
    color: var(--color-accent-strong);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .hero__title,
  .page-title {
    font-size: clamp(3rem, 8vw, 6.8rem);
    font-weight: 400;
    letter-spacing: -0.07em;
    line-height: 0.9;
    margin-top: 1rem;
    max-width: 11ch;
  }

  .hero__summary {
    color: var(--color-muted);
    font-size: clamp(1.2rem, 2vw, 1.55rem);
    line-height: 1.45;
    margin-top: 1.5rem;
    max-width: 40rem;
  }

  .hero__links,
  .link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.75rem;
  }

  .button {
    align-items: center;
    background: var(--color-ink);
    border-radius: 999px;
    color: var(--color-canvas);
    display: inline-flex;
    font-weight: 700;
    min-height: 2.75rem;
    padding: 0.65rem 1rem;
    text-decoration: none;
  }

  .button:hover {
    background: var(--color-accent-strong);
    color: var(--color-canvas);
  }

  .button--ghost {
    background: transparent;
    box-shadow: inset 0 0 0 1px var(--color-line);
    color: var(--color-ink);
  }

  .button--ghost:hover {
    background: var(--color-surface);
    color: var(--color-ink);
  }

  .profile-card {
    align-self: start;
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1rem;
  }

  .profile-card__image {
    aspect-ratio: 1;
    border-radius: 1rem;
    object-fit: cover;
    width: 100%;
  }

  .profile-card__body {
    padding: 1rem 0.25rem 0.25rem;
  }

  .profile-card__meta {
    color: var(--color-muted);
    font-size: 0.95rem;
    margin-top: 0.35rem;
  }

  .section {
    padding: 3rem 0;
  }

  .section__header {
    align-items: end;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    margin-bottom: 1.5rem;
  }

  .section__title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 400;
    letter-spacing: -0.045em;
    line-height: 1;
    margin-top: 0.5rem;
  }

  .post-list {
    display: grid;
    gap: 1rem;
  }

  .post-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    display: grid;
    gap: 1rem;
    grid-template-columns: 10rem minmax(0, 1fr);
    padding: 1.25rem;
  }

  .post-card__date {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
  }

  .post-card__title {
    font-size: clamp(1.35rem, 2vw, 2rem);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 1.1;
  }

  .post-card__title a {
    text-decoration: none;
  }

  .post-card__summary {
    color: var(--color-muted);
    margin-top: 0.65rem;
  }

  .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 0.9rem;
  }

  .tags__item {
    background: oklch(93% 0.025 85);
    border-radius: 999px;
    color: var(--color-muted);
    font-size: 0.78rem;
    padding: 0.2rem 0.55rem;
    text-decoration: none;
  }

  .grid-cards {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .split-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1.1fr 0.9fr;
  }

  .link-list {
    display: grid;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
  }

  .link-list__item {
    background: var(--color-surface);
    border-radius: 1rem;
    padding: 1rem;
  }

  .link-list__item a {
    font-weight: 700;
    text-decoration: none;
  }

  .search-box {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    padding: 1rem;
  }

  .search-box__input {
    background: var(--color-canvas);
    border: 1px solid var(--color-line);
    border-radius: 999px;
    color: var(--color-ink);
    font: inherit;
    min-height: 3rem;
    padding: 0.75rem 1rem;
    width: 100%;
  }

  .search-box__input:focus {
    border-color: var(--color-accent);
    outline: 3px solid oklch(62% 0.12 190 / 0.2);
  }

  .search-status {
    color: var(--color-muted);
    margin: 0 0 1rem;
  }

  .archive {
    display: grid;
    gap: 2rem;
  }

  .archive__year {
    border-top: 1px solid var(--color-line);
    display: grid;
    gap: 1rem;
    grid-template-columns: 9rem minmax(0, 1fr);
    padding-top: 1.25rem;
  }

  .archive__heading {
    font-family: var(--font-mono);
    font-size: 1rem;
  }

  .archive__list {
    display: grid;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
  }

  .archive__item {
    align-items: baseline;
    display: grid;
    gap: 1rem;
    grid-template-columns: 5rem minmax(0, 1fr);
  }

  .archive__date {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
  }

  .archive__link {
    font-weight: 700;
    text-decoration: none;
  }

  .article-footer {
    border-top: 1px solid var(--color-line);
    display: grid;
    gap: 1.25rem;
    margin-top: 3rem;
    padding-top: 1.5rem;
  }

  .author-box {
    align-items: center;
    background: var(--color-canvas);
    border-radius: var(--radius);
    display: grid;
    gap: 1rem;
    grid-template-columns: 5rem minmax(0, 1fr);
    padding: 1rem;
  }

  .author-box__image {
    aspect-ratio: 1;
    border-radius: 999px;
    object-fit: cover;
  }

  .author-box__name {
    font-size: 1.35rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
  }

  .author-box__text {
    color: var(--color-muted);
    margin-top: 0.35rem;
  }

  .post-nav {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .post-nav__link {
    background: var(--color-canvas);
    border-radius: var(--radius);
    display: grid;
    gap: 0.35rem;
    padding: 1rem;
    text-decoration: none;
  }

  .post-nav__link--next {
    text-align: right;
  }

  .post-nav__label {
    color: var(--color-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
  }

  .tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .tag-cloud__link {
    align-items: center;
    background: var(--color-surface);
    border-radius: 999px;
    display: inline-flex;
    gap: 0.5rem;
    padding: 0.7rem 0.95rem;
    text-decoration: none;
  }

  .tag-cloud__count {
    background: var(--color-ink);
    border-radius: 999px;
    color: var(--color-canvas);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    min-width: 1.6rem;
    padding: 0.1rem 0.4rem;
    text-align: center;
  }

  .project-bucket {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .project-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 1rem;
  }

  .project-card__logo {
    border-radius: 1rem;
    height: 3rem;
    width: 3rem;
  }

  .project-card__title {
    font-size: 1.15rem;
    margin-top: 0.8rem;
  }

  .project-card__text,
  .project-card__meta {
    color: var(--color-muted);
    margin-top: 0.5rem;
  }

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

  .talk-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    display: grid;
    overflow: hidden;
  }

  .talk-card__thumb {
    background: oklch(18% 0.04 280);
    display: block;
    text-decoration: none;
  }

  .talk-card__thumb img {
    aspect-ratio: 16 / 9;
    height: 100%;
    object-fit: cover;
    width: 100%;
  }

  .talk-card__body {
    padding: 1.1rem;
  }

  .talk-card__meta {
    color: var(--color-muted);
    display: flex;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    gap: 0.6rem;
    margin-bottom: 0.65rem;
    text-transform: uppercase;
  }

  .talk-card__title {
    font-size: 1.35rem;
    letter-spacing: -0.035em;
    line-height: 1.1;
  }

  .talk-card__title a {
    text-decoration: none;
  }

  .talk-card__summary {
    color: var(--color-muted);
    margin-top: 0.65rem;
  }

  .video-embed {
    aspect-ratio: 16 / 9;
    background: oklch(18% 0.04 280);
    border-radius: var(--radius);
    margin-top: 2rem;
    overflow: hidden;
  }

  .video-embed iframe {
    border: 0;
    height: 100%;
    width: 100%;
  }

  .info-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 1.4rem;
  }

  .info-card__title {
    font-size: 1.15rem;
    font-weight: 700;
  }

  .info-card__text {
    color: var(--color-muted);
    margin-top: 0.55rem;
  }

  .page-header {
    padding: 1rem 0 3rem;
  }

  .page-description {
    color: var(--color-muted);
    font-size: 1.25rem;
    max-width: 45rem;
    margin-top: 1.25rem;
  }

  .article {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 4rem;
    padding: clamp(1.25rem, 4vw, 3rem);
  }

  .article__meta {
    color: var(--color-muted);
    display: flex;
    flex-wrap: wrap;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
  }

  .article__title {
    font-size: clamp(2.4rem, 6vw, 5rem);
    font-weight: 400;
    letter-spacing: -0.06em;
    line-height: 0.95;
    max-width: 12ch;
  }

  .article__description {
    color: var(--color-muted);
    font-size: 1.25rem;
    margin-top: 1.25rem;
    max-width: 45rem;
  }

  .prose {
    color: oklch(22% 0.035 280);
    font-size: 1.06rem;
    margin-top: 2.5rem;
    max-width: 48rem;
  }

  .prose > * + * {
    margin-top: 1.15rem;
  }

  .prose h2,
  .prose h3 {
    color: var(--color-ink);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.15;
    margin-top: 2rem;
  }

  .prose h2 {
    font-size: 1.85rem;
  }

  .prose h3 {
    font-size: 1.35rem;
  }

  .prose ul,
  .prose ol {
    padding-left: 1.25rem;
  }

  .prose blockquote {
    border-left: 0.25rem solid var(--color-accent);
    color: var(--color-muted);
    padding-left: 1rem;
  }

  .prose code {
    background: oklch(92% 0.018 85);
    border-radius: 0.4rem;
    font-size: 0.9em;
    padding: 0.1rem 0.25rem;
  }

  .prose pre {
    background: oklch(18% 0.04 280);
    border-radius: 1rem;
    color: oklch(94% 0.015 80);
    overflow-x: auto;
    padding: 1rem;
  }

  .prose pre code {
    background: transparent;
    color: inherit;
    padding: 0;
  }

  .prose img {
    border-radius: 1rem;
    margin: 1.5rem 0;
  }

  .site-footer {
    border-top: 1px solid var(--color-line);
    color: var(--color-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    padding: 2rem 0;
  }
}

@layer utilities {
  .muted {
    color: var(--color-muted);
  }
}

@media (max-width: 820px) {
  .hero,
  .post-card,
  .grid-cards,
  .split-grid,
  .talk-grid,
  .project-bucket {
    grid-template-columns: 1fr;
  }

  .profile-card {
    max-width: 22rem;
  }

  .archive__year,
  .archive__item,
  .author-box,
  .post-nav {
    grid-template-columns: 1fr;
  }

  .post-nav__link--next {
    text-align: left;
  }
}

@media (max-width: 560px) {
  .site-shell {
    padding: 1rem;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 2.25rem;
  }

  .section__header {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media print {
  body {
    background: white;
  }

  .site-shell {
    max-width: none;
    padding: 0;
  }

  .site-header,
  .site-footer,
  .tags,
  .article__meta {
    display: none;
  }

  .article {
    box-shadow: none;
    margin: 0;
    padding: 0;
  }

  .article__title {
    font-size: 2rem;
  }

  .prose {
    color: black;
    font-size: 10.5pt;
    max-width: none;
  }

  .prose h2 {
    break-after: avoid;
    font-size: 1rem;
  }

  a {
    color: black;
    text-decoration: none;
  }
}