/* Material 3 dark scheme - seed #6750A4 */

:root {
  /* color tokens */
  --md-sys-color-primary: #D0BCFF;
  --md-sys-color-on-primary: #381E72;
  --md-sys-color-primary-container: #4F378B;
  --md-sys-color-on-primary-container: #EADDFF;
  --md-sys-color-secondary: #CBC2DB;
  --md-sys-color-on-secondary: #332D41;
  --md-sys-color-secondary-container: #4A4458;
  --md-sys-color-on-secondary-container: #E8DEF8;
  --md-sys-color-surface: #101014;
  --md-sys-color-surface-dim: #101014;
  --md-sys-color-on-surface: #E6E0E9;
  --md-sys-color-on-surface-variant: #CAC4D0;
  --md-sys-color-surface-container-lowest: #0B0B0F;
  --md-sys-color-surface-container-low: #1A191E;
  --md-sys-color-surface-container: #1E1E23;
  --md-sys-color-surface-container-high: #292830;
  --md-sys-color-outline: #938F99;
  --md-sys-color-outline-variant: #49454F;

  /* shape tokens */
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-full: 9999px;

  /* type tokens */
  --md-ref-typeface: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, sans-serif;
  --md-sys-typescale-display-small-size: 2.25rem;
  --md-sys-typescale-display-small-line-height: 2.75rem;
  --md-sys-typescale-display-small-weight: 400;
  --md-sys-typescale-headline-small-size: 1.5rem;
  --md-sys-typescale-headline-small-line-height: 2rem;
  --md-sys-typescale-headline-small-weight: 400;
  --md-sys-typescale-title-medium-size: 1rem;
  --md-sys-typescale-title-medium-line-height: 1.5rem;
  --md-sys-typescale-title-medium-weight: 500;
  --md-sys-typescale-body-large-size: 1rem;
  --md-sys-typescale-body-large-line-height: 1.5rem;
  --md-sys-typescale-body-large-weight: 400;
  --md-sys-typescale-body-medium-size: 0.875rem;
  --md-sys-typescale-body-medium-line-height: 1.25rem;
  --md-sys-typescale-body-medium-weight: 400;
  --md-sys-typescale-label-large-size: 0.875rem;
  --md-sys-typescale-label-large-line-height: 1.25rem;
  --md-sys-typescale-label-large-weight: 500;
  --md-sys-typescale-label-medium-size: 0.75rem;
  --md-sys-typescale-label-medium-line-height: 1rem;
  --md-sys-typescale-label-medium-weight: 500;

  /* motion tokens */
  --md-sys-motion-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-duration: 200ms;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-ref-typeface);
  font-size: var(--md-sys-typescale-body-large-size);
  line-height: var(--md-sys-typescale-body-large-line-height);
  font-weight: var(--md-sys-typescale-body-large-weight);
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-radius: var(--md-sys-shape-corner-small);
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* appbar */

.appbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--md-sys-color-surface) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.appbar__brand {
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: var(--md-sys-typescale-title-medium-weight);
  letter-spacing: 0.02em;
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
}

.appbar__brand:hover {
  text-decoration: none;
}

.lang {
  display: flex;
  align-items: center;
  gap: 8px;
}

.lang__item {
  min-width: 40px;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
}

.lang__item:hover {
  text-decoration: none;
  background: var(--md-sys-color-surface-container-high);
}

.lang__item--active {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.lang__sep {
  color: var(--md-sys-color-outline-variant);
}

/* hero */

.hero {
  padding: 48px 0 40px;
}

.anchor {
  display: flex;
  gap: 20px;
  margin-bottom: 40px;
  font-size: var(--md-sys-typescale-label-large-size);
}

.anchor a {
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
}

.anchor a:hover {
  color: var(--md-sys-color-on-surface);
}

.hero__name {
  margin: 0;
  font-size: var(--md-sys-typescale-display-small-size);
  line-height: var(--md-sys-typescale-display-small-line-height);
  font-weight: var(--md-sys-typescale-display-small-weight);
  letter-spacing: -0.01em;
}

.hero__tagline {
  margin: 8px 0 0;
  font-size: var(--md-sys-typescale-title-medium-size);
  font-weight: var(--md-sys-typescale-title-medium-weight);
  color: var(--md-sys-color-primary);
}

.hero__desc {
  margin: 16px 0 0;
  max-width: 56ch;
  color: var(--md-sys-color-on-surface-variant);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.chip {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-full);
  font-size: var(--md-sys-typescale-label-medium-size);
  font-weight: var(--md-sys-typescale-label-medium-weight);
  letter-spacing: 0.01em;
  color: var(--md-sys-color-on-surface-variant);
  background: var(--md-sys-color-surface-container-low);
}

.chip--small {
  height: 24px;
  padding: 0 10px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}

/* buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: background-color var(--md-sys-motion-duration) var(--md-sys-motion-standard);
}

.btn:hover {
  text-decoration: none;
}

.btn--filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.btn--filled:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.btn--tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

.btn--tonal:hover {
  background: var(--md-sys-color-secondary);
  color: var(--md-sys-color-on-secondary);
}

.btn--text {
  padding: 0 16px;
  color: var(--md-sys-color-primary);
}

.btn--text:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

/* sections */

.section {
  padding: 24px 0 8px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.section__title {
  margin: 24px 0 20px;
  font-size: var(--md-sys-typescale-headline-small-size);
  line-height: var(--md-sys-typescale-headline-small-line-height);
  font-weight: var(--md-sys-typescale-headline-small-weight);
}

/* cards */

.cards {
  display: grid;
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  padding: 20px;
  background: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
}

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card__title {
  margin: 0;
  font-size: var(--md-sys-typescale-title-medium-size);
  line-height: var(--md-sys-typescale-title-medium-line-height);
  font-weight: var(--md-sys-typescale-title-medium-weight);
}

.card__desc {
  margin: 12px 0 0;
  color: var(--md-sys-color-on-surface-variant);
}

.card__note {
  margin: 16px 0 8px;
  font-size: var(--md-sys-typescale-body-medium-size);
  line-height: var(--md-sys-typescale-body-medium-line-height);
  color: var(--md-sys-color-on-surface-variant);
}

.cmd {
  display: block;
  padding: 10px 14px;
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-small);
  font-family: ui-monospace, "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: var(--md-sys-typescale-body-medium-size);
  color: var(--md-sys-color-primary);
  user-select: all;
  overflow-x: auto;
}

.card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 16px;
}

.link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
}

/* prose & list */

.prose p {
  margin: 0 0 12px;
  max-width: 60ch;
  color: var(--md-sys-color-on-surface-variant);
}

.list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.list li {
  display: flex;
  align-items: center;
  min-height: 44px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.list li:last-child {
  border-bottom: none;
}

/* contact */

.contact__desc {
  margin: 0 0 24px;
  color: var(--md-sys-color-on-surface-variant);
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

/* footer */

.footer {
  margin-top: auto;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding: 24px 0 32px;
  font-size: var(--md-sys-typescale-body-medium-size);
  line-height: var(--md-sys-typescale-body-medium-line-height);
  color: var(--md-sys-color-on-surface-variant);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
}

.footer__tag {
  font-family: ui-monospace, "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: var(--md-sys-typescale-label-medium-size);
}

@media (min-width: 600px) {
  .container {
    padding: 0 32px;
  }

  .appbar {
    padding: 0 32px;
  }

  .hero {
    padding: 72px 0 56px;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
  }

  .cards .card:last-child {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn {
    transition: none;
  }
}