/* === McRae Social — Shared Stylesheet === */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Picture elements must not disrupt flex/grid layouts */
picture { display: contents; }

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

:root {
  --bg: #2d3240;
  --bg-nav: #252933;
  --text: #e0e0e0;
  --text-dim: #9ea3b0;
  --accent: #7b8fb5;
  --accent-hover: #a0b4d4;
  --border: #3c4150;
  --nav-height: 52px;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}


/* ── Navigation ── */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border);
}

.site-nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  height: var(--nav-height);
}

.site-nav__brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.site-nav__logo-link {
  display: flex;
  align-items: center;
  padding: 0;
}

.site-nav__logo-img {
  height: 30px;
  width: auto;
  display: block;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.15s ease;
}

.site-nav__logo {
  height: 32px;
  width: auto;
  display: block;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.15s ease;
}

.site-nav__brand:hover .site-nav__logo {
  opacity: 0.8;
}

.site-nav__brand-icon {
  display: flex;
  align-items: center;
  opacity: 0.75;
  transition: opacity 0.15s;
}

.site-nav__brand-icon:hover {
  opacity: 1;
}

.site-nav__logo-link:hover .site-nav__logo-img {
  opacity: 1;
}

/* Inline logo images used inside nav link items (Workbooks, McRae Marks) */
.site-nav__link--logo {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0;
}

.site-nav__inline-logo {
  height: 30px;
  width: auto;
  display: block;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity 0.15s ease;
}

.site-nav__link--logo:hover .site-nav__inline-logo,
.site-nav__dropdown:hover .site-nav__inline-logo {
  opacity: 1;
}

.utility-btn--logo {
  padding: 0.6rem 1rem !important;
  border-color: transparent !important;
  background: transparent !important;
}

.utility-logo-img {
  max-height: 52px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.site-nav__links {
  list-style: none;
  display: flex;
  align-items: stretch;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

/* Each li fills full nav height; content is centred inside */
.site-nav__links > li {
  display: flex;
  align-items: center;
}

/* Nav Dropdown CSS */
.site-nav__dropdown {
  position: relative;
  display: flex;
  align-items: center;
}
.site-nav__dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  min-width: 13rem;
  z-index: 1000;
  flex-direction: column;
}
.site-nav__dropdown:hover .site-nav__dropdown-menu,
.site-nav__dropdown:focus-within .site-nav__dropdown-menu {
  display: flex;
}
.site-nav__dropdown-item {
  padding: 0.75rem 1rem;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.site-nav__dropdown-item:last-child {
  border-bottom: none;
}
.site-nav__dropdown-item:hover {
  background: var(--bg-alt);
  color: var(--text);
}

.site-nav__link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.25rem 0;
  transition: color 0.15s ease;
}

.site-nav__link:hover,
.site-nav__link--active {
  color: #fff;
}

.site-nav__hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
}

/* Mobile nav */
@media (max-width: 768px) {
  .site-nav__links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1rem 1.25rem;
    gap: 0;
  }

  .site-nav__links.open {
    display: flex;
  }

  .site-nav__dropdown-menu {
    position: static;
    display: none;
    border: none;
    background: transparent;
    padding-left: 1rem;
    width: 100%;
  }
  
  .site-nav__dropdown:hover .site-nav__dropdown-menu,
  .site-nav__dropdown:focus-within .site-nav__dropdown-menu {
    display: flex;
  }

  .site-nav__link {
    display: block;
    padding: 0.75rem 0;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border);
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .site-nav__link:last-child {
    border-bottom: none;
  }

  .site-nav__hamburger {
    display: block;
  }
}


/* ── Page Banner ── */

.page-banner {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.page-banner__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2528 / 480;
  max-height: 280px;
  object-fit: cover;
}

.page-banner__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1.25rem 1.25rem;
  background: rgba(0, 0, 0, 0.55);
}

.page-banner__title {
  font-size: 1.1rem;
  font-weight: 400;
  color: #fff;
  max-width: 1100px;
  margin: 0 auto;
  line-height: 1.4;
}

@media (min-width: 769px) {
  .page-banner__overlay {
    padding: 2rem 2rem 1.5rem;
  }
  .page-banner__title {
    font-size: 1.25rem;
  }
}


/* ── Main Content Area ── */

.page-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}


/* ── Back Link ── */

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 1.5rem;
  padding: 0.25rem 0;
  transition: color 0.15s ease;
}

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


/* ── Utility Links ── */

.utility-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.utility-links a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  transition: color 0.15s ease;
}

.utility-links a:hover {
  color: var(--accent-hover);
}

.utility-links__primary {
  color: var(--text) !important;
  font-weight: 600 !important;
  font-size: 0.95rem !important;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
}

.utility-links__primary:hover {
  color: #fff !important;
  border-color: var(--accent-hover);
}


/* ── Image Grid (Unit Thumbnails) ── */

.unit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.unit-grid__item {
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  min-height: 44px;
  overflow: hidden;
}

.unit-grid__img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--border);
}

.unit-grid__label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  margin: 0;
  padding: 0.75rem;
  background: rgba(45, 50, 64, 0.9);
  font-size: 0.9rem;
  color: var(--text-dim);
  text-align: center;
  border: none;
}

.unit-grid__item:hover .unit-grid__label {
  color: #fff;
}

@media (max-width: 768px) {
  .unit-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

@media (max-width: 400px) {
  .unit-grid {
    grid-template-columns: 1fr;
  }
}

/* ── 2-col unit grid variant (Social 10) ── */

.unit-grid--2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 640px;
  margin: 0 auto 0;
}

.unit-grid--2col .unit-grid__img {
  max-height: 210px;
}

.unit-grid--solo {
  display: flex;
  justify-content: center;
  max-width: 640px;
  margin: 1.5rem auto 3rem;
}

.unit-grid--solo .unit-grid__item {
  width: calc(50% - 0.75rem);
}

.unit-grid--solo .unit-grid__img {
  max-height: 210px;
}

@media (max-width: 500px) {
  .unit-grid--2col {
    grid-template-columns: 1fr;
  }
  .unit-grid--solo .unit-grid__item {
    width: 100%;
  }
}


/* ── Home Page Layouts ── */

.home-hero {
  position: relative;
  background-image: url('/assets/images/home/banner.png');
  background-size: cover;
  background-position: center;
  padding: 4rem 1rem;
  border-bottom: 2px solid var(--border);
  overflow: hidden;
}

.home-hero__overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg);
  opacity: 0.80;
}

.home-hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.home-grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 700px; /* Restrict width to prevent blown-out images */
  margin: 0 auto;
}

@media (max-width: 500px) {
  .home-grid-2x2 {
    grid-template-columns: 1fr;
    max-width: 400px;
  }
}

.home-grid-2x2 .unit-grid__item {
  border: none;
}

.home-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.home-grid-3 .utility-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  text-align: center;
  transition: all 0.2s ease;
}

.home-grid-3 .utility-btn:hover {
  border-color: var(--accent);
  background: rgba(123, 143, 181, 0.05);
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
  align-items: start;
}

@media (max-width: 768px) {
  .split-layout {
    grid-template-columns: 1fr;
  }
}

.logo-center {
  display: flex;
  justify-content: center;
  margin: 3rem 0;
}

.logo-center img {
  max-width: 150px;
  border-radius: 8px;
}


/* ── Stream Toggles ── */

.stream-toggle {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.stream-btn {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
}

.stream-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.stream-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.grid-item--hidden,
.utility-link--hidden {
  display: none !important;
}


/* ── Section Headings ── */

.section-heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 1rem;
}


/* ── Utility Button ── */

.utility-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  background: transparent;
  text-align: center;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
}

.utility-btn:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.utility-btn--work {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(123, 143, 181, 0.08);
}

.utility-btn--work:hover {
  background: rgba(123, 143, 181, 0.18);
  color: var(--accent-hover);
}


/* ── Unit Banner ── */

.unit-banner {
  position: relative;
  width: 100%;
  height: 250px;
  overflow: hidden;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.unit-banner__img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

.unit-banner__overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(30, 35, 45, 0.72);
  z-index: 1;
}

.unit-banner__text {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 1rem;
}

.unit-banner__course {
  color: rgba(255, 255, 255, 0.65);
  font-weight: 600;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.unit-banner__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin: 0;
  text-align: center;
  max-width: 800px;
}

@media (min-width: 769px) {
  .unit-banner__title {
    font-size: 1.9rem;
  }
}


/* ── Unit Sections ── */

.unit-section {
  border-bottom: 1px solid var(--border);
  padding: 2rem 1.5rem;
}

.unit-section:last-child {
  border-bottom: none;
}

.unit-section__title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.unit-para {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}


/* ── Stream Groups ── */

.stream-group {
  margin-bottom: 1.5rem;
}

.stream-groups {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1rem;
}

@media (max-width: 640px) {
  .stream-groups {
    grid-template-columns: 1fr;
  }
}

/* When a stream-group is hidden via JS (display:none), collapse grid to 1 col */
.stream-groups:has([data-stream][style*="display: none"]) {
  grid-template-columns: 1fr;
}


.stream-group__label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

[data-stream] {
  transition: opacity 0.15s ease;
}


/* ── Assignment Block ── */

.assignment-block {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.assignment-block:last-child {
  border-bottom: none;
}

.assignment-block__label {
  flex: 1;
  min-width: 200px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}

.assignment-block__actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
  flex-wrap: wrap;
}


/* ── PDF Thumbnail Tile ── */

.pdf-thumb {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.15s;
  margin-bottom: 1.25rem;
}

.pdf-thumb:hover {
  border-color: var(--accent);
}

.pdf-thumb__img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--bg-alt);
  overflow: hidden;
}

.pdf-thumb__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  background: var(--bg-alt);
}

/* Fallback placeholder shown when no image file exists yet */
.pdf-thumb__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--bg-alt);
}

.pdf-thumb__icon {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--accent);
  width: 40px;
  height: 48px;
  border: 1px solid var(--accent);
  background: rgba(123, 143, 181, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pdf-thumb__label {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 500;
}


/* ── Utility Link Items (Handouts / Required Reading) ── */

.utility-link-item {
  display: block;
  padding: 0.6rem 0;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  transition: color 0.15s;
}

.utility-link-item:last-child {
  border-bottom: none;
}

.utility-link-item:hover {
  color: var(--accent-hover);
}


/* ── Page Titles (non-banner pages) ── */

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.25rem;
  line-height: 1.3;
}

.page-subtitle {
  font-size: 0.95rem;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
}


/* ── Back Link ── */

.back-link {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.back-link a {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.back-link a:hover {
  color: var(--accent-hover);
}

/* ── Unit Page: Assignment Links ── */

.link-list {
  list-style: none;
  margin-bottom: 2.5rem;
}

.link-list li {
  border-bottom: 1px solid var(--border);
}

.link-list a {
  display: flex;
  align-items: center;
  padding: 0.75rem 0;
  min-height: 44px;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

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

.link-list a::after {
  content: '→';
  margin-left: auto;
  padding-left: 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}


/* ── Unit Page: Notes Thumbnails ── */

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.note-thumb {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.note-thumb:hover {
  border-color: var(--accent);
}

.note-thumb__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #1e222c;
}

.note-thumb__label {
  display: block;
  padding: 0.6rem 0.75rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  background: var(--bg-nav);
}

.note-thumb:hover .note-thumb__label {
  color: #fff;
}


/* ── Unit Page: Embedded Content (iframes) ── */

.embed-wrap {
  margin-bottom: 2rem;
}

.embed-wrap iframe {
  display: block;
  width: 100%;
  height: 480px;
  border: 1px solid var(--border);
  background: #1e222c;
}

@media (max-width: 600px) {
  .embed-wrap iframe {
    height: 320px;
  }
}


/* ── Footer ── */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}


/* ── Page Zoom Transition ── */

.zoom-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

.zoom-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.home-hero .unit-grid__item .unit-grid__img {
  transition: transform 0.35s ease, filter 0.35s ease;
}

.home-hero .unit-grid__item.is-zooming .unit-grid__img {
  transform: scale(1.06);
  filter: brightness(1.15);
}
  
/* 🔖 Submit Widget Badges 🔖 */ 

/* ── Slide Viewer (Dropzone notes) ── */

.slide-viewer {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.slide-viewer__track {
  display: flex;
  transition: transform 0.35s cubic-bezier(.4,0,.2,1);
}

.slide-viewer__slide {
  flex: 0 0 100%;
  width: 100%;
  display: block;
  object-fit: contain;
  background: #000;
}

.slide-viewer__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
}

.slide-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 0.4rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.15s;
}

.slide-btn:hover {
  background: var(--accent-hover);
}

.slide-counter {
  color: var(--text-dim);
  font-size: 0.85rem;
  min-width: 4rem;
  text-align: center;
}

/* ── Keynote / iCloud iframe embed ── */

.slide-viewer-iframe {
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  max-height: 480px;
}

.slide-viewer-iframe iframe {
  width: 100%;
  height: 480px;
  border: none;
  display: block;
}

@media (max-width: 640px) {
  .slide-viewer-iframe iframe {
    height: 300px;
  }
}

/* .keynote-embed is an alias for .slide-viewer-iframe — use that class going forward */
.keynote-embed {
  width: 100%;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border, rgba(255,255,255,0.08));
  background: #000;
  margin-top: 1rem;
  max-height: 480px;
}

.keynote-embed__frame {
  width: 100%;
  height: 480px;
  border: none;
  display: block;
}

@media (max-width: 640px) {
  .keynote-embed__frame {
    height: 300px;
  }
}

/* ── Keynote slide-jump controls ── */
.kn-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
  background: var(--bg-alt, #1a1e28);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  flex-wrap: wrap;
}
.kn-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-weight: 500;
  white-space: nowrap;
}
.kn-input {
  width: 60px;
  padding: 0.3rem 0.5rem;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.85rem;
  font-family: inherit;
  border-radius: 4px;
  text-align: center;
}
.kn-btn {
  padding: 0.3rem 0.85rem;
  background: var(--accent, #7b8fb5);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s;
}
.kn-btn:hover {
  background: var(--accent-hover, #a0b3d1);
}
.kn-hint {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-left: auto;
  white-space: nowrap;
}
.kn-wrap .slide-viewer-iframe iframe,
.kn-wrap .slide-viewer-iframe {
  border-radius: 0 0 8px 8px;
}

.kn-wrap {
  max-width: 100%;
}

/* Force iframe to a sensible presentation height */
.kn-wrap .slide-viewer-iframe iframe,
.slide-viewer-iframe iframe,
.keynote-embed__frame {
  height: 420px !important;
}

@media (max-width: 640px) {
  .kn-wrap .slide-viewer-iframe iframe,
  .slide-viewer-iframe iframe,
  .keynote-embed__frame {
    height: 260px !important;
  }
}
@media (max-width: 600px) {
  .kn-hint { display: none; }
}

/* ── Keynote 2-column notes grid ── */
.kn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 1rem;
}

@media (max-width: 700px) {
  .kn-grid { grid-template-columns: 1fr; }
}

.kn-tile {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-alt, #1a1e28);
}

.kn-tile__header {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.kn-tile__title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kn-tile__nav {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.kn-scrubber {
  flex: 1;
  min-width: 60px;
  height: 4px;
  accent-color: var(--accent, #7b8fb5);
  cursor: pointer;
}

.kn-slide-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.kn-tile .kn-input {
  width: 44px;
  padding: 0.2rem 0.35rem;
  font-size: 0.78rem;
}

.kn-tile .kn-btn {
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
}

.kn-tile .slide-viewer-iframe iframe {
  height: 260px !important;
  border-radius: 0;
}

@media (max-width: 700px) {
  .kn-tile .slide-viewer-iframe iframe {
    height: 220px !important;
  }
}

/* ── PPTX slide viewer inside kn-tile ── */
.kn-tile .slide-viewer {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.kn-tile .slide-viewer__track {
  display: flex;
  transition: transform 0.3s ease;
  will-change: transform;
}
.kn-tile .slide-viewer__slide {
  flex: 0 0 100%;
  width: 100%;
  height: 260px;
  object-fit: contain;
  background: #111;
  display: block;
}
@media (max-width: 700px) {
  .kn-tile .slide-viewer__slide {
    height: 220px;
  }
}
.slide-btn {
  background: var(--accent, #7b8fb5);
  border: none;
  color: #fff;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.85rem;
  cursor: pointer;
  line-height: 1;
  transition: background 0.15s;
}
.slide-btn:hover { background: var(--accent-hover, #a0b3d1); }
.slide-counter { font-size: 0.72rem; color: var(--text-dim); }

/* Fullscreen button inside kn-tile header */
.kn-fs-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85rem;
  cursor: pointer;
  line-height: 1;
  margin-left: auto;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}
.kn-fs-btn:hover { color: var(--text); border-color: var(--accent, #7b8fb5); }
.kn-tile:fullscreen .slide-viewer-iframe,
.kn-tile:fullscreen .slide-viewer-iframe iframe {
  width: 100vw !important;
  height: 100vh !important;
  border-radius: 0;
}
.kn-tile:fullscreen .slide-viewer { height: 100vh !important; }
.kn-tile:fullscreen .slide-viewer__slide { height: 100vh !important; object-fit: contain; }