.python-lessons-page {
  padding: 54px 0 72px;
}

.python-lessons-container {
  max-width: 900px;
}

.python-lessons-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin-bottom: 30px;
  color: var(--text-soft);
  font-size: 14px;
}

.python-lessons-breadcrumbs a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.python-lessons-breadcrumbs a:hover {
  color: var(--accent-hover);
}

.python-lessons-breadcrumbs a:focus-visible {
  border-radius: 3px;
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.python-lessons-intro {
  max-width: 760px;
}

.python-lessons-intro h1 {
  margin: 0;
  color: var(--text);
  font-size: 44px;
  line-height: 1.15;
  letter-spacing: 0;
}

.python-lessons-intro p {
  margin: 18px 0 0;
  color: var(--text-muted);
  font-size: 19px;
}

.python-lessons-notice {
  margin-top: 36px;
  padding: 20px 22px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: var(--surface-muted);
}

.python-lessons-notice h2 {
  margin: 0;
  color: var(--text);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: 0;
}

.python-lessons-notice p {
  margin: 10px 0 0;
  color: var(--text-muted);
  font-size: 16px;
}

.lessons-catalog {
  margin-top: 50px;
}

.lessons-catalog > h2 {
  margin: 0 0 20px;
  color: var(--text);
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0;
}

.lessons-list {
  display: grid;
  gap: 10px;
}

.lessons-list__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 28px;
  gap: 20px;
  align-items: center;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.lessons-list__item:hover {
  border-color: var(--accent);
  background: var(--surface-muted);
}

.lessons-list__item:focus-visible {
  border-color: var(--accent);
  outline: 3px solid var(--accent-soft);
  outline-offset: 3px;
}

.lessons-list__content {
  display: grid;
  gap: 7px;
  min-width: 0;
}

.lessons-list__title {
  margin: 0;
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.lessons-list__description {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.55;
}

.lessons-list__arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--accent);
  font-size: 24px;
  line-height: 1;
}

@media (max-width: 640px) {
  .python-lessons-page {
    padding: 36px 0 52px;
  }

  .python-lessons-breadcrumbs {
    margin-bottom: 24px;
  }

  .python-lessons-intro h1 {
    font-size: 34px;
  }

  .python-lessons-intro p {
    font-size: 17px;
  }

  .python-lessons-notice {
    margin-top: 28px;
    padding: 17px 16px;
  }

  .lessons-catalog {
    margin-top: 40px;
  }

  .lessons-catalog > h2 {
    font-size: 25px;
  }

  .lessons-list__item {
    grid-template-columns: minmax(0, 1fr) 24px;
    gap: 12px;
    padding: 16px;
  }

  .lessons-list__title {
    font-size: 17px;
  }

  .lessons-list__arrow {
    width: 24px;
    height: 24px;
    font-size: 21px;
  }
}

/* Individual lesson */

.lesson-page {
  min-width: 0;
  padding: 56px 0 72px;
  overflow: clip;
}

.lesson-article {
  width: min(calc(100% - 32px), 800px);
  min-width: 0;
  margin: 0 auto;
}

.lesson-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin-bottom: 30px;
  color: var(--text-soft);
  font-size: 14px;
}

.lesson-breadcrumbs a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.lesson-breadcrumbs a:hover {
  color: var(--accent-hover);
}

.lesson-breadcrumbs a:focus-visible,
.lesson-content a:focus-visible,
.lesson-navigation a:focus-visible {
  border-radius: 3px;
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.lesson-header {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.lesson-header h1 {
  margin: 0;
  color: var(--text);
  font-size: 44px;
  line-height: 1.14;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.lesson-updated {
  margin: 14px 0 0;
  color: var(--text-soft);
  font-size: 15px;
}

.lesson-content {
  min-width: 0;
  padding-top: 34px;
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.7;
  overflow-wrap: break-word;
}

.lesson-content h2,
.lesson-content h3,
.lesson-content h4,
.lesson-content h5,
.lesson-content h6 {
  color: var(--text);
  line-height: 1.3;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.lesson-content h2 {
  margin: 48px 0 18px;
  font-size: 30px;
}

.lesson-content h3 {
  margin: 34px 0 14px;
  font-size: 23px;
}

.lesson-content h4 {
  margin: 28px 0 12px;
  font-size: 19px;
}

.lesson-content h5 {
  margin: 24px 0 10px;
  font-size: 17px;
}

.lesson-content h6 {
  margin: 22px 0 10px;
  font-size: 16px;
}

.lesson-content > :first-child {
  margin-top: 0;
}

.lesson-content p {
  margin: 0 0 18px;
}

.lesson-content ul,
.lesson-content ol {
  display: grid;
  gap: 8px;
  margin: 0 0 22px;
  padding-left: 28px;
}

.lesson-content li > ul,
.lesson-content li > ol {
  margin-top: 8px;
  margin-bottom: 0;
}

.lesson-content li::marker {
  color: var(--accent);
}

.lesson-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.lesson-content a:hover {
  color: var(--accent-hover);
}

.lesson-content blockquote {
  margin: 24px 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--accent);
  color: var(--text-muted);
}

.lesson-content blockquote p:last-child {
  margin-bottom: 0;
}

.lesson-content hr {
  margin: 38px 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.lesson-table-wrapper {
  max-width: 100%;
  margin: 24px 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.lesson-table-wrapper table {
  width: max-content;
  min-width: 100%;
  border-collapse: collapse;
}

.lesson-table-wrapper th,
.lesson-table-wrapper td {
  padding: 10px 12px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.lesson-table-wrapper th {
  background: var(--surface-muted);
  color: var(--text);
}

.lesson-table-wrapper th:last-child,
.lesson-table-wrapper td:last-child {
  border-right: 0;
}

.lesson-table-wrapper tr:last-child td {
  border-bottom: 0;
}

.lesson-content code {
  font-family:
    "SFMono-Regular",
    Consolas,
    "Liberation Mono",
    Menlo,
    monospace;
}

.lesson-content :not(pre) > code {
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-muted);
  color: var(--text);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.lesson-content .codehilite,
.lesson-content .lesson-code-block:not(.codehilite) {
  position: relative;
  max-width: 100%;
  margin: 24px 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f0f0f0;
  color: #111827;
}

.lesson-content pre {
  max-width: 100%;
  margin: 24px 0;
  padding: 18px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #f0f0f0;
  color: #111827;
  font-size: 15px;
  line-height: 1.55;
  white-space: pre;
  overflow-wrap: normal;
  overscroll-behavior-inline: contain;
}

.lesson-content .codehilite pre,
.lesson-content .lesson-code-block:not(.codehilite) > pre {
  min-width: 100%;
  margin: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
}

.lesson-content .lesson-code-block > pre {
  padding-top: 58px;
}

.lesson-code-copy {
  position: absolute;
  z-index: 1;
  top: 10px;
  right: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 34px;
  max-width: calc(100% - 20px);
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.lesson-code-copy:hover {
  border-color: var(--accent);
  background: var(--surface-muted);
}

.lesson-code-copy:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lesson-code-copy:disabled {
  cursor: default;
  opacity: 1;
}

.lesson-code-copy svg {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.lesson-code-copy__label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lesson-navigation {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  gap: 16px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.lesson-navigation a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.lesson-navigation a:hover {
  color: var(--accent-hover);
}

.lesson-navigation__previous {
  justify-self: start;
}

.lesson-navigation__all {
  grid-column: 2;
  justify-self: center;
  text-align: center;
}

.lesson-navigation__next {
  grid-column: 3;
  justify-self: end;
  text-align: right;
}

/* Pygments syntax highlighting */

.lesson-content pre .hll {
  background-color: #ffffcc;
}

.lesson-content pre .c,
.lesson-content pre .ch,
.lesson-content pre .cm,
.lesson-content pre .cpf,
.lesson-content pre .c1 {
  color: #4f7f8f;
  font-style: italic;
}

.lesson-content pre .cp {
  color: #007020;
}

.lesson-content pre .cs {
  color: #4f7f8f;
  background-color: #fff0f0;
}

.lesson-content pre .err {
  border-bottom: 1px solid #d00000;
}

.lesson-content pre .k,
.lesson-content pre .kc,
.lesson-content pre .kd,
.lesson-content pre .kn,
.lesson-content pre .kr,
.lesson-content pre .ow {
  color: #007020;
  font-weight: 700;
}

.lesson-content pre .kp,
.lesson-content pre .nb,
.lesson-content pre .bp,
.lesson-content pre .ne {
  color: #007020;
}

.lesson-content pre .kt {
  color: #902000;
}

.lesson-content pre .o {
  color: #5f6368;
}

.lesson-content pre .m,
.lesson-content pre .mb,
.lesson-content pre .mf,
.lesson-content pre .mh,
.lesson-content pre .mi,
.lesson-content pre .mo,
.lesson-content pre .il {
  color: #287b55;
}

.lesson-content pre .s,
.lesson-content pre .sa,
.lesson-content pre .sb,
.lesson-content pre .sc,
.lesson-content pre .dl,
.lesson-content pre .s2,
.lesson-content pre .sh,
.lesson-content pre .s1 {
  color: #315f92;
}

.lesson-content pre .sd {
  color: #315f92;
  font-style: italic;
}

.lesson-content pre .se {
  color: #315f92;
  font-weight: 700;
}

.lesson-content pre .si {
  color: #4c78a8;
  font-style: italic;
}

.lesson-content pre .sx {
  color: #a64d00;
}

.lesson-content pre .sr {
  color: #235388;
}

.lesson-content pre .ss {
  color: #517918;
}

.lesson-content pre .na {
  color: #315f92;
}

.lesson-content pre .nc,
.lesson-content pre .nn {
  color: #0b719b;
  font-weight: 700;
}

.lesson-content pre .no {
  color: #287b88;
}

.lesson-content pre .nd {
  color: #555;
  font-weight: 700;
}

.lesson-content pre .ni {
  color: #b3442b;
  font-weight: 700;
}

.lesson-content pre .nf,
.lesson-content pre .fm {
  color: #06287e;
}

.lesson-content pre .nl,
.lesson-content pre .nt {
  color: #062873;
  font-weight: 700;
}

.lesson-content pre .nv,
.lesson-content pre .vc,
.lesson-content pre .vg,
.lesson-content pre .vi,
.lesson-content pre .vm {
  color: #8c4aa8;
}

.lesson-content pre .gd {
  color: #a00000;
}

.lesson-content pre .ge {
  font-style: italic;
}

.lesson-content pre .ges {
  font-weight: 700;
  font-style: italic;
}

.lesson-content pre .gr {
  color: #d00000;
}

.lesson-content pre .gh {
  color: #000080;
  font-weight: 700;
}

.lesson-content pre .gi {
  color: #008000;
}

.lesson-content pre .go {
  color: #666;
}

.lesson-content pre .gp {
  color: #a64d00;
  font-weight: 700;
}

.lesson-content pre .gs {
  font-weight: 700;
}

.lesson-content pre .gu {
  color: #800080;
  font-weight: 700;
}

.lesson-content pre .gt {
  color: #04d;
}

.lesson-content pre .w {
  color: #777;
}

:root[data-theme="dark"] .lesson-content .codehilite,
:root[data-theme="dark"] .lesson-content .lesson-code-block:not(.codehilite),
:root[data-theme="dark"] .lesson-content pre {
  background: #272822;
  color: #f8f8f2;
}

:root[data-theme="dark"] .lesson-content .codehilite pre,
:root[data-theme="dark"] .lesson-content .lesson-code-block:not(.codehilite) > pre {
  background: transparent;
}

:root[data-theme="dark"] .lesson-content pre .hll {
  background-color: #49483e;
}

:root[data-theme="dark"] .lesson-content pre .c,
:root[data-theme="dark"] .lesson-content pre .ch,
:root[data-theme="dark"] .lesson-content pre .cm,
:root[data-theme="dark"] .lesson-content pre .cp,
:root[data-theme="dark"] .lesson-content pre .cpf,
:root[data-theme="dark"] .lesson-content pre .c1,
:root[data-theme="dark"] .lesson-content pre .cs {
  color: #b5b09a;
  background: transparent;
  font-style: italic;
}

:root[data-theme="dark"] .lesson-content pre .err {
  color: #ff5c9f;
  border: 0;
  background-color: #1e0010;
}

:root[data-theme="dark"] .lesson-content pre .k,
:root[data-theme="dark"] .lesson-content pre .kc,
:root[data-theme="dark"] .lesson-content pre .kd,
:root[data-theme="dark"] .lesson-content pre .kp,
:root[data-theme="dark"] .lesson-content pre .kr,
:root[data-theme="dark"] .lesson-content pre .kt {
  color: #66d9ef;
  font-weight: 400;
}

:root[data-theme="dark"] .lesson-content pre .kn,
:root[data-theme="dark"] .lesson-content pre .o,
:root[data-theme="dark"] .lesson-content pre .ow {
  color: #ff5794;
  font-weight: 400;
}

:root[data-theme="dark"] .lesson-content pre .m,
:root[data-theme="dark"] .lesson-content pre .mb,
:root[data-theme="dark"] .lesson-content pre .mf,
:root[data-theme="dark"] .lesson-content pre .mh,
:root[data-theme="dark"] .lesson-content pre .mi,
:root[data-theme="dark"] .lesson-content pre .mo,
:root[data-theme="dark"] .lesson-content pre .il {
  color: #ae81ff;
}

:root[data-theme="dark"] .lesson-content pre .s,
:root[data-theme="dark"] .lesson-content pre .sa,
:root[data-theme="dark"] .lesson-content pre .sb,
:root[data-theme="dark"] .lesson-content pre .sc,
:root[data-theme="dark"] .lesson-content pre .dl,
:root[data-theme="dark"] .lesson-content pre .sd,
:root[data-theme="dark"] .lesson-content pre .s2,
:root[data-theme="dark"] .lesson-content pre .sh,
:root[data-theme="dark"] .lesson-content pre .si,
:root[data-theme="dark"] .lesson-content pre .sx,
:root[data-theme="dark"] .lesson-content pre .sr,
:root[data-theme="dark"] .lesson-content pre .s1,
:root[data-theme="dark"] .lesson-content pre .ss {
  color: #e6db74;
}

:root[data-theme="dark"] .lesson-content pre .se {
  color: #ae81ff;
}

:root[data-theme="dark"] .lesson-content pre .na,
:root[data-theme="dark"] .lesson-content pre .nc,
:root[data-theme="dark"] .lesson-content pre .nd,
:root[data-theme="dark"] .lesson-content pre .ne,
:root[data-theme="dark"] .lesson-content pre .nf,
:root[data-theme="dark"] .lesson-content pre .fm {
  color: #a6e22e;
  font-weight: 400;
}

:root[data-theme="dark"] .lesson-content pre .nb,
:root[data-theme="dark"] .lesson-content pre .bp,
:root[data-theme="dark"] .lesson-content pre .ni,
:root[data-theme="dark"] .lesson-content pre .nl,
:root[data-theme="dark"] .lesson-content pre .nn,
:root[data-theme="dark"] .lesson-content pre .no,
:root[data-theme="dark"] .lesson-content pre .nt,
:root[data-theme="dark"] .lesson-content pre .nv,
:root[data-theme="dark"] .lesson-content pre .vc,
:root[data-theme="dark"] .lesson-content pre .vg,
:root[data-theme="dark"] .lesson-content pre .vi,
:root[data-theme="dark"] .lesson-content pre .vm {
  color: #f8f8f2;
  font-weight: 400;
}

:root[data-theme="dark"] .lesson-content pre .gd,
:root[data-theme="dark"] .lesson-content pre .gp {
  color: #ff5794;
}

:root[data-theme="dark"] .lesson-content pre .gi {
  color: #a6e22e;
}

:root[data-theme="dark"] .lesson-content pre .go {
  color: #66d9ef;
}

:root[data-theme="dark"] .lesson-content pre .ge,
:root[data-theme="dark"] .lesson-content pre .ges,
:root[data-theme="dark"] .lesson-content pre .gr,
:root[data-theme="dark"] .lesson-content pre .gh,
:root[data-theme="dark"] .lesson-content pre .gs,
:root[data-theme="dark"] .lesson-content pre .gt,
:root[data-theme="dark"] .lesson-content pre .w {
  color: #f8f8f2;
}

:root[data-theme="dark"] .lesson-content pre .gu {
  color: #b5b09a;
}

@media (max-width: 640px) {
  .lesson-page {
    padding: 36px 0 52px;
  }

  .lesson-article {
    width: min(calc(100% - 24px), 800px);
  }

  .lesson-breadcrumbs {
    margin-bottom: 24px;
    font-size: 13px;
  }

  .lesson-header {
    padding-bottom: 22px;
  }

  .lesson-header h1 {
    font-size: 34px;
    line-height: 1.18;
  }

  .lesson-content {
    padding-top: 28px;
    font-size: 16px;
  }

  .lesson-content h2 {
    margin-top: 38px;
    font-size: 26px;
  }

  .lesson-content h3 {
    font-size: 21px;
  }

  .lesson-content h4 {
    font-size: 18px;
  }

  .lesson-content h5,
  .lesson-content h6 {
    font-size: 16px;
  }

  .lesson-content pre {
    padding: 15px;
    font-size: 14px;
  }

  .lesson-content .lesson-code-block > pre {
    padding-top: 55px;
  }

  .lesson-code-copy {
    top: 9px;
    right: 9px;
    max-width: calc(100% - 18px);
  }

  .lesson-navigation {
    gap: 10px;
    margin-top: 40px;
    padding-top: 20px;
    font-size: 15px;
  }
}