/* ESIIL Brand — style guide implementation */

/* ── Color tokens ────────────────────────────────────────────────────────── */
:root {
  --esiil-primary-blue:  #234A65;
  --esiil-accent-blue:   #42BCDC;
  --esiil-accent-green:  #007135;
  --esiil-body-text:     #161A19;
  --esiil-gray:          #E3E3E3;
  --esiil-gray-relief:   #E3E3E3;
  --oasis-deep-blue:     #123D58;
  --oasis-dark-teal:     #122629;
  --oasis-panel-border:  rgba(35, 74, 101, 0.14);
  --oasis-panel-shadow:  0 1rem 2.2rem rgba(22, 26, 25, 0.08);
  --oasis-line-texture:  repeating-linear-gradient(
    165deg,
    rgba(35, 74, 101, 0.045) 0,
    rgba(35, 74, 101, 0.045) 1px,
    transparent 1px,
    transparent 18px
  );

  /* Override Material theme palette */
  --md-primary-fg-color:              #234A65;
  --md-primary-fg-color--light:       #42BCDC;
  --md-primary-fg-color--dark:        #1a3650;
  --md-primary-bg-color:              #ffffff;
  --md-primary-bg-color--light:       rgba(255, 255, 255, 0.7);
  --md-accent-fg-color:               #42BCDC;
  --md-accent-fg-color--transparent:  rgba(66, 188, 220, 0.1);
  --md-accent-bg-color:               #ffffff;
  --md-typeset-color:                 #161A19;
  --md-typeset-a-color:               #234A65;
}

[data-md-color-scheme="slate"] {
  --md-default-bg-color:              #0b1718;
  --md-default-bg-color--light:       #122629;
  --md-default-fg-color:              rgba(245, 250, 249, 0.92);
  --md-default-fg-color--light:       rgba(245, 250, 249, 0.72);
  --md-default-fg-color--lighter:     rgba(245, 250, 249, 0.54);
  --md-typeset-color:                 rgba(245, 250, 249, 0.92);
  --md-typeset-a-color:               #42BCDC;
  --md-code-bg-color:                 rgba(255, 255, 255, 0.08);
  --md-code-fg-color:                 rgba(245, 250, 249, 0.94);
  --oasis-panel-border:               rgba(66, 188, 220, 0.22);
  --oasis-panel-shadow:               0 1rem 2.2rem rgba(0, 0, 0, 0.32);
  --oasis-line-texture:               repeating-linear-gradient(
    165deg,
    rgba(66, 188, 220, 0.07) 0,
    rgba(66, 188, 220, 0.07) 1px,
    transparent 1px,
    transparent 18px
  );
}

body {
  background:
    radial-gradient(circle at 50% 0, rgba(66, 188, 220, 0.10), transparent 28rem),
    linear-gradient(180deg, #ffffff 0, #f7faf9 24rem, #ffffff 100%);
}

body[data-md-color-scheme="slate"] {
  background:
    radial-gradient(circle at 50% 4rem, rgba(66, 188, 220, 0.16), transparent 28rem),
    linear-gradient(180deg, #263638 0, #122629 20rem, #0b1718 100%);
}

[data-md-color-scheme="slate"] body {
  background:
    radial-gradient(circle at 50% 4rem, rgba(66, 188, 220, 0.16), transparent 28rem),
    linear-gradient(180deg, #263638 0, #122629 20rem, #0b1718 100%) !important;
}

html[data-md-color-scheme="slate"] {
  background: #0b1718 !important;
}

.md-main {
  background-image: var(--oasis-line-texture);
  background-attachment: fixed;
}

body[data-md-color-scheme="slate"] .md-main {
  background:
    var(--oasis-line-texture),
    linear-gradient(180deg, rgba(38, 54, 56, 0.70), rgba(11, 23, 24, 0.94));
}

[data-md-color-scheme="slate"] .md-main {
  background:
    var(--oasis-line-texture),
    linear-gradient(180deg, rgba(38, 54, 56, 0.70), rgba(11, 23, 24, 0.94)) !important;
}

[data-md-color-scheme="slate"] .md-content,
[data-md-color-scheme="slate"] .md-main__inner,
[data-md-color-scheme="slate"] .md-content__inner {
  background: transparent !important;
}

/* ── Typography — ESIIL scale ────────────────────────────────────────────── */

/* H1 Banner — 3.5rem, bold, body text (near-black) */
.md-typeset h1 {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--esiil-primary-blue);
  margin-bottom: 0.5rem;
}

/* H2 Section Titles — 2.5rem, Primary Blue */
.md-typeset h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--esiil-primary-blue);
}

/* H3 Section Subtitles — 1.5rem, Accent Blue */
.md-typeset h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--esiil-accent-blue);
}

/* H4 Card Titles — 1.5rem, body text */
.md-typeset h4 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--esiil-primary-blue);
}

/* H5 Misc Bolded Titles — 1.125rem, body text */
.md-typeset h5 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--esiil-primary-blue);
}

/* Body text — 1rem */
.md-typeset {
  font-size: 1rem;
}

[data-md-color-scheme="slate"] .md-typeset h1,
[data-md-color-scheme="slate"] .md-typeset h2,
[data-md-color-scheme="slate"] .lesson-slide h1 {
  color: var(--esiil-accent-blue);
}

[data-md-color-scheme="slate"] .md-typeset h3,
[data-md-color-scheme="slate"] .md-typeset h4,
[data-md-color-scheme="slate"] .md-typeset h5,
[data-md-color-scheme="slate"] .lesson-slide h2 {
  color: #23b365;
}

/* Lead paragraph on home page */
.md-content > .md-typeset > p:first-of-type:not(:has(img.page-hero)) {
  font-size: 1.05rem;
  max-width: 68ch;
}

/* ── Quantum emulator homepage hero ────────────────────────────────────── */
.qe-hero {
  width: calc(100% + 2.4rem);
  max-width: none;
  margin: -0.6rem -1.2rem 1.8rem;
  padding: clamp(1.25rem, 4vw, 3.2rem);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(18rem, 1.1fr);
  gap: clamp(1.2rem, 4vw, 3.5rem);
  align-items: center;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(244, 250, 248, 0.96)),
    var(--oasis-line-texture);
  border: 1px solid rgba(35, 74, 101, 0.10);
  border-radius: 0.45rem;
}

.qe-hero-copy h1 {
  margin-top: 0;
  max-width: 12ch;
  line-height: 0.95;
}

.qe-hero-copy p {
  max-width: 42rem;
  color: rgba(22, 26, 25, 0.78);
  font-size: 1.08rem;
}

.qe-hero-copy p:first-of-type {
  margin-top: 0.9rem;
  color: var(--esiil-primary-blue);
  font-size: clamp(1.25rem, 2.4vw, 1.95rem);
  line-height: 1.12;
  font-weight: 700;
}

.qe-hero-copy .md-button {
  margin-top: 0.6rem;
  margin-right: 0.55rem;
}

.qe-hero-visual {
  margin: 0;
}

.qe-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.qe-story-strip {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 2rem;
  overflow: hidden;
  border: 1px solid rgba(35, 74, 101, 0.12);
  border-radius: 0.4rem;
  background: rgba(35, 74, 101, 0.12);
}

.qe-story-strip span {
  padding: 0.8rem 0.7rem;
  background: rgba(255, 255, 255, 0.84);
  color: var(--esiil-primary-blue);
  font-size: 0.76rem;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0;
}

.qe-results-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(18rem, 0.88fr);
  gap: 1.3rem;
  align-items: stretch;
  margin: 1rem 0 2rem;
}

.qe-results-grid figure {
  margin: 0;
  border: 1px solid rgba(35, 74, 101, 0.12);
  border-radius: 0.45rem;
  overflow: hidden;
  background: #ffffff;
}

.qe-results-grid figure img {
  display: block;
  width: 100%;
}

.qe-results-grid figcaption {
  padding: 0.7rem 0.85rem;
  color: rgba(22, 26, 25, 0.68);
  font-size: 0.78rem;
}

.qe-result-panel {
  padding: 1rem 1.1rem;
  border: 1px solid rgba(35, 74, 101, 0.12);
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.84);
}

.qe-result-panel h3 {
  margin-top: 0;
}

.qe-result-panel table {
  margin: 0.6rem 0 1rem;
  font-size: 0.8rem;
}

[data-md-color-scheme="slate"] .qe-hero {
  background:
    linear-gradient(135deg, rgba(18, 38, 41, 0.96), rgba(11, 23, 24, 0.96)),
    var(--oasis-line-texture);
  border-color: rgba(66, 188, 220, 0.22);
}

[data-md-color-scheme="slate"] .qe-hero-copy p {
  color: rgba(245, 250, 249, 0.78);
}

[data-md-color-scheme="slate"] .qe-hero-copy p:first-of-type,
[data-md-color-scheme="slate"] .qe-story-strip span {
  color: var(--esiil-accent-blue);
}

[data-md-color-scheme="slate"] .qe-story-strip {
  border-color: rgba(66, 188, 220, 0.20);
  background: rgba(66, 188, 220, 0.18);
}

[data-md-color-scheme="slate"] .qe-story-strip span {
  background: rgba(18, 38, 41, 0.88);
}

[data-md-color-scheme="slate"] .qe-results-grid figure,
[data-md-color-scheme="slate"] .qe-result-panel {
  background: rgba(18, 38, 41, 0.86);
  border-color: rgba(66, 188, 220, 0.22);
}

[data-md-color-scheme="slate"] .qe-results-grid figcaption {
  color: rgba(245, 250, 249, 0.68);
}

@media (max-width: 860px) {
  .qe-hero {
    grid-template-columns: 1fr;
  }

  .qe-hero-copy h1 {
    max-width: 14ch;
  }

  .qe-story-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .qe-results-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .qe-story-strip {
    grid-template-columns: 1fr;
  }
}

.md-typeset > p:has(> img.page-hero) {
  width: calc(100% + 2.4rem);
  max-width: none !important;
  margin: 0 -1.2rem 1.4rem;
}

.md-typeset img.page-hero {
  display: block;
  width: 100%;
  max-height: 8rem;
  margin: 0;
  border-radius: 0.3rem;
  object-fit: cover;
  object-position: center;
}

.md-typeset img.cyverse-hero {
  height: auto;
  max-height: none;
  object-fit: contain;
}

.md-typeset img.cyverse-concept-figure {
  display: block;
  width: 100%;
  margin: 1.5rem auto 0.65rem;
  border: 1px solid rgba(35, 74, 101, 0.14);
  border-radius: 0.4rem;
}

/* ── GitHub connection path panels ──────────────────────────────────────── */
.github-path-panels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 1.5rem 0;
}

.github-path-panel {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0.9rem;
  padding: 1.1rem 1.2rem;
  background: var(--md-default-bg-color);
  box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.06);
}

.github-path-panel h3 {
  margin-top: 0;
}

.github-path-panel ol {
  padding-left: 1.25rem;
}

.github-path-panel li {
  margin-bottom: 0.45rem;
}

.github-path-panel pre {
  margin: 0.65rem 0 0.9rem;
}

.github-path-panel img {
  display: block;
  width: 100%;
  border-radius: 0.3rem;
}

.github-path-widget {
  border-top: 0.35rem solid var(--md-primary-fg-color);
}

.github-path-terminal {
  border-top: 0.35rem solid var(--md-accent-fg-color);
}

@media (max-width: 760px) {
  .github-path-panels {
    grid-template-columns: 1fr;
  }
}

/* ── Site footer ────────────────────────────────────────────────────────── */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 1rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(247, 250, 249, 0.94)),
    var(--oasis-line-texture);
  border-top: 1px solid rgba(22, 26, 25, 0.10);
}

.footer-content {
  max-width: 70rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-text {
  color: rgba(22, 26, 25, 0.76);
  font-size: 0.72rem;
  line-height: 1.5;
}

.footer-text strong {
  color: var(--esiil-primary-blue);
}

.footer-text a {
  color: var(--esiil-primary-blue);
  font-weight: 700;
}

.footer-logos {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.footer-logos img {
  display: block;
  max-width: 7.5rem;
  max-height: 2.4rem;
  object-fit: contain;
  opacity: 0.86;
}

[data-md-color-scheme="slate"] .site-footer {
  background:
    linear-gradient(180deg, rgba(18, 38, 41, 0.94), rgba(11, 23, 24, 0.98)),
    var(--oasis-line-texture);
  border-top-color: rgba(227, 227, 227, 0.18);
}

[data-md-color-scheme="slate"] .footer-text,
[data-md-color-scheme="slate"] .footer-text strong,
[data-md-color-scheme="slate"] .footer-text a {
  color: rgba(245, 250, 249, 0.86);
}

@media screen and (max-width: 44rem) {
  .site-footer {
    padding: 1.5rem 0.8rem;
  }

  .footer-content {
    align-items: flex-start;
  }

  .footer-logos {
    gap: 0.75rem;
  }

  .footer-logos img {
    max-width: 6.5rem;
    max-height: 2.1rem;
  }
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
/* Matched from esiil.org CSS:
   default  → left-to-right  #42BCDC 0 % → #47BF7F 60 %  (black text)
   hover    → right-to-left  #007135 0 % → #234A65 100%  (white text) */

.md-button,
.md-button--primary {
  background: linear-gradient(to right, #42BCDC 0%, #47BF7F 60%) !important;
  background-size: 200% auto !important;
  border: none !important;
  border-radius: 0 !important;
  outline: none;
  color: var(--esiil-body-text) !important;
  font-weight: 700 !important;
  padding: 0.5rem 2.5rem;
  text-transform: uppercase;
  transition: background 0.5s ease, color 0.5s ease;
}

.md-button:hover,
.md-button:focus,
.md-button--primary:hover,
.md-button--primary:focus {
  background: linear-gradient(to left, #007135 0%, #234A65 100%) !important;
  border: none !important;
  border-radius: 0 !important;
  outline: none;
  color: #ffffff !important;
  text-decoration: none;
}

/* ── Navigation ──────────────────────────────────────────────────────────── */

.md-header {
  background:
    linear-gradient(90deg, #123D58 0%, #234A65 46%, #17384f 100%);
  box-shadow: 0 0.45rem 1.4rem rgba(18, 61, 88, 0.18);
}

.md-header__inner.md-grid {
  max-width: none;
  padding-left: 0.8rem;
  padding-right: 0.8rem;
}

.md-header .md-logo[data-md-component="logo"] {
  width: 4.8rem;
  height: 2.2rem;
  background: url("../assets/esiil_wordmark.png") center / contain no-repeat;
}

.md-header .md-logo[data-md-component="logo"] img {
  display: none;
}

.md-search__form {
  border-radius: 0.75rem;
  background-color: rgba(255, 255, 255, 0.18);
}

.md-search__form:hover,
.md-search__form:focus-within {
  background-color: rgba(255, 255, 255, 0.26);
}

.md-nav__link--active,
.md-nav__link:is(:focus, :hover) {
  color: var(--esiil-accent-blue);
}

/* --------------------------------------------------------------------------
   Left sidebar layout refinements
   Larger ESIIL-style sidebar logo, wider left rail, and improved nav type.
   Desktop only so the mobile drawer remains controlled by MkDocs Material.
   -------------------------------------------------------------------------- */
.md-sidebar .md-nav__title {
  color: var(--esiil-primary-blue);
  font-weight: 800;
}

.md-sidebar .md-nav__item--section > .md-nav__link,
.md-sidebar .md-nav__item--nested > .md-nav__link {
  color: var(--esiil-accent-green);
  font-weight: 800;
}

.md-sidebar--primary .md-nav[aria-label="Navigation"] > .md-nav__list > .md-nav__item > .md-nav__link {
  color: var(--esiil-accent-green);
  font-weight: 800;
}

.md-sidebar .md-nav__link {
  border-radius: 0.35rem;
}

.md-sidebar .md-nav__link--active {
  color: var(--esiil-accent-green);
  font-weight: 800;
  background: rgba(66, 188, 220, 0.12);
}

.md-sidebar .md-nav__link:hover {
  color: var(--esiil-accent-green);
  background: rgba(66, 188, 220, 0.10);
}

/* Hide in-page table of contents entries from the sidebar. */
.md-sidebar--secondary {
  display: none !important;
}

.md-sidebar--primary .md-nav[aria-label="Table of contents"] {
  display: none;
}

/* --------------------------------------------------------------------------
   CyVerse guide right rail
   Restores a calm page table of contents for the long CyVerse workshop page.
   -------------------------------------------------------------------------- */
@media screen and (min-width: 76.25em) {
  body.oasis-cyverse-page .md-sidebar--secondary {
    display: block !important;
    margin-left: auto;
    width: 13.5rem;
  }

  body.oasis-cyverse-page .md-sidebar--secondary .md-sidebar__scrollwrap {
    border-left: 1px solid rgba(22, 26, 25, 0.10);
    padding-left: 0.85rem;
    scrollbar-width: thin;
  }

  body.oasis-cyverse-page .md-sidebar--secondary .md-nav__title {
    color: var(--esiil-accent-green);
    font-size: 0.9rem;
    font-weight: 800;
    line-height: 1.2;
    padding-bottom: 0.45rem;
    text-transform: none;
  }

  body.oasis-cyverse-page .md-sidebar--secondary .md-nav__link {
    border-left: 3px solid transparent;
    border-radius: 0;
    color: rgba(22, 26, 25, 0.72);
    font-size: 0.76rem;
    line-height: 1.28;
    padding: 0.22rem 0 0.22rem 0.55rem;
  }

  body.oasis-cyverse-page .md-sidebar--secondary .md-nav__link:hover,
  body.oasis-cyverse-page .md-sidebar--secondary .md-nav__link:focus,
  body.oasis-cyverse-page .md-sidebar--secondary .md-nav__link--active {
    border-left-color: var(--esiil-accent-blue);
    color: var(--esiil-accent-green);
    font-weight: 700;
  }

  body[data-md-color-scheme="slate"].oasis-cyverse-page .md-sidebar--secondary .md-sidebar__scrollwrap {
    border-left-color: rgba(227, 227, 227, 0.18);
  }

  body[data-md-color-scheme="slate"].oasis-cyverse-page .md-sidebar--secondary .md-nav__link {
    color: rgba(245, 250, 249, 0.68);
  }
}

@media screen and (min-width: 76.25em) {
  .md-main__inner {
    column-gap: 0;
    margin-left: 0;
    margin-right: 0;
    max-width: none;
    width: 100%;
  }

  .md-sidebar {
    padding-top: 0.25rem;
  }

  .md-sidebar--primary {
    left: 0;
    transform: none;
    width: 15rem;
  }

  .md-sidebar--primary .md-sidebar__scrollwrap {
    border-right: 1px solid rgba(22, 26, 25, 0.10);
    padding: 0.2rem 0.65rem 0.95rem 0.85rem;
    scrollbar-width: thin;
  }

  .md-sidebar--primary .md-nav__title {
    font-size: 1rem;
    line-height: 1.25;
    padding-top: 0.25rem;
    padding-bottom: 0.45rem;
  }

  .md-sidebar--primary .md-nav__button.md-logo {
    display: block;
    width: 10.25rem;
    max-width: 100%;
    height: 7.7rem;
    margin: 0 auto 0.35rem;
    border-radius: 0.35rem;
    background:
      #ffffff
      url("../assets/quantum-infrastructure-logo.png")
      center / contain
      no-repeat;
  }

  .md-sidebar--primary .md-nav__button.md-logo img {
    display: none;
  }

  .md-sidebar--primary .md-nav__link {
    font-size: 0.95rem;
    line-height: 1.35;
    padding-top: 0.35rem;
    padding-bottom: 0.35rem;
  }

  .md-sidebar--primary .md-nav__item--section > .md-nav__link,
  .md-sidebar--primary .md-nav__item--nested > .md-nav__link {
    font-size: 0.95rem;
  }

  .md-content {
    margin-left: 0;
  }

  .md-content__inner {
    margin-left: 1.2rem;
    margin-right: 1.2rem;
  }

  [data-md-color-scheme="slate"] .md-sidebar--primary .md-sidebar__scrollwrap {
    border-right-color: rgba(227, 227, 227, 0.18);
  }
}

[data-md-color-scheme="slate"] .md-sidebar .md-nav__title,
[data-md-color-scheme="slate"] .md-sidebar .md-nav__link {
  color: rgba(245, 250, 249, 0.86);
}

[data-md-color-scheme="slate"] .md-sidebar .md-nav__item--section > .md-nav__link,
[data-md-color-scheme="slate"] .md-sidebar .md-nav__item--nested > .md-nav__link,
[data-md-color-scheme="slate"] .md-sidebar .md-nav__link--active,
[data-md-color-scheme="slate"] .md-sidebar .md-nav__link:hover {
  color: #23b365;
}

/* ── Cards (grid cards extension) ───────────────────────────────────────── */
.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  border-top: 3px solid var(--esiil-accent-blue);
  border-radius: 0.25rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(247, 250, 249, 0.90)),
    var(--oasis-line-texture);
  box-shadow: var(--oasis-panel-shadow);
}

[data-md-color-scheme="slate"] .md-typeset .grid.cards > ul > li,
[data-md-color-scheme="slate"] .md-typeset .grid.cards > ol > li {
  background:
    linear-gradient(180deg, rgba(18, 38, 41, 0.96), rgba(23, 54, 57, 0.88)),
    var(--oasis-line-texture);
}

/* ── Reusable embed wrapper ──────────────────────────────────────────────── */
.oasis-embed {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 0.2rem 0.8rem rgba(0, 0, 0, 0.12);
}

.oasis-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ── Homepage routing grid ──────────────────────────────────────────────── */
.oasis-link-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 1.5rem 0 2rem;
}

.oasis-link-grid > p {
  display: contents;
}

.oasis-link-grid .md-button {
  align-items: center;
  display: flex;
  justify-content: center;
  min-height: 3.8rem;
  padding: 0.65rem 0.75rem;
  text-align: center;
  white-space: normal;
  line-height: 1.15;
}

@media screen and (max-width: 76.24em) {
  .oasis-link-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media screen and (max-width: 36em) {
  .oasis-link-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Native lesson slideshow ────────────────────────────────────────────── */
.lesson-slideshow {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin: 1.5rem 0 2rem;
}

.lesson-slide {
  min-height: 68vh;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--esiil-gray-relief, #E3E3E3);
  border-radius: 0.5rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(247, 250, 249, 0.90)),
    var(--oasis-line-texture);
  box-shadow: 0 1rem 2.5rem rgba(22, 26, 25, 0.08);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

[data-md-color-scheme="slate"] .lesson-slide {
  background:
    linear-gradient(180deg, rgba(18, 38, 41, 0.96), rgba(23, 54, 57, 0.90)),
    var(--oasis-line-texture);
  border-color: var(--oasis-panel-border);
}

.lesson-slide h1 {
  color: var(--esiil-primary-blue, #234A65);
  font-size: 3.2rem;
  line-height: 1.05;
  letter-spacing: 0;
  margin-bottom: 1.2rem;
}

.lesson-slide h2 {
  color: var(--esiil-accent-green, #007135);
  font-size: 2.1rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.lesson-slide h3 {
  color: var(--esiil-body-text, #161A19);
  font-size: 1.45rem;
  letter-spacing: 0;
}

.lesson-slide p,
.lesson-slide li {
  font-size: 1.15rem;
  line-height: 1.45;
}

.lesson-slide ul,
.lesson-slide ol {
  margin-top: 0.8rem;
}

.title-slide,
.section-slide,
.closing-slide {
  background:
    linear-gradient(135deg, rgba(35, 74, 101, 0.08), rgba(66, 188, 220, 0.10), rgba(0, 113, 53, 0.08)),
    var(--oasis-line-texture);
}

[data-md-color-scheme="slate"] .title-slide,
[data-md-color-scheme="slate"] .section-slide,
[data-md-color-scheme="slate"] .closing-slide {
  background:
    linear-gradient(135deg, rgba(35, 74, 101, 0.36), rgba(66, 188, 220, 0.12), rgba(0, 113, 53, 0.18)),
    var(--oasis-line-texture);
}

.title-slide h1,
.section-slide h1,
.closing-slide h1 {
  margin-bottom: 0.6rem;
}

.title-slide-qr {
  align-items: center;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 1.25rem;
  max-width: 12rem;
}

.title-slide-qr img {
  display: block;
  width: min(11rem, 32vw);
  border: 0.35rem solid #ffffff;
  border-radius: 0.35rem;
  box-shadow: 0 0.55rem 1.4rem rgba(22, 26, 25, 0.12);
}

.title-slide-qr a {
  display: block;
}

.title-slide-qr p {
  margin: 0;
  color: var(--esiil-primary-blue, #234A65);
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
}

.slide-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 2rem 0;
}

.presenter-mode-help {
  margin-top: 0.75rem;
  color: rgba(22, 26, 25, 0.75);
  font-size: 0.95rem;
}

.lesson-presenter-mode {
  overflow: hidden;
}

.lesson-presenter-mode .md-header,
.lesson-presenter-mode .md-sidebar,
.lesson-presenter-mode .md-tabs,
.lesson-presenter-mode .md-footer,
.lesson-presenter-mode .slide-nav-links,
.lesson-presenter-mode .presenter-mode-help {
  display: none !important;
}

.lesson-presenter-mode .md-main__inner,
.lesson-presenter-mode .md-content,
.lesson-presenter-mode .md-content__inner {
  margin: 0 !important;
  max-width: none !important;
  padding: 0 !important;
}

.lesson-presenter-mode .md-content__inner > h1:first-child {
  display: none;
}

.lesson-presenter-mode .lesson-slideshow {
  margin: 0;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  background: #ffffff;
}

.lesson-presenter-mode .lesson-slide {
  --presenter-slide-base: clamp(0.92rem, 1.55vw, 1.05rem);
  display: none;
  min-height: 100vh;
  width: 100vw;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: clamp(1.5rem, 4vw, 3.25rem);
  font-size: var(--presenter-slide-base);
  overflow-y: auto;
}

.lesson-presenter-mode .lesson-slide h1 {
  font-size: 3em;
  margin-bottom: 0.8em;
}

.lesson-presenter-mode .lesson-slide h2 {
  font-size: 1.9em;
}

.lesson-presenter-mode .lesson-slide h3 {
  font-size: 1.3em;
}

.lesson-presenter-mode .lesson-slide p,
.lesson-presenter-mode .lesson-slide li {
  font-size: 1.08em;
  line-height: 1.32;
}

.lesson-presenter-mode .lesson-slide ul,
.lesson-presenter-mode .lesson-slide ol {
  margin-top: 0.45em;
  margin-bottom: 0.45em;
}

.lesson-presenter-mode .lesson-slide.is-active-slide {
  display: flex;
}

.lesson-presenter-mode #presenter-mode-toggle {
  position: fixed;
  z-index: 9999;
  right: 1rem;
  top: 1rem;
}

@media print {
  .lesson-slide {
    min-height: 90vh;
    page-break-after: always;
    box-shadow: none;
  }
}

@media screen and (max-width: 44rem) {
  .lesson-slide h1 {
    font-size: 2.2rem;
  }

  .lesson-slide h2 {
    font-size: 1.55rem;
  }

  .lesson-slide h3 {
    font-size: 1.2rem;
  }

  .lesson-slide p,
  .lesson-slide li {
    font-size: 1rem;
  }
}