:root {
  --c-dark-grey: #3a3a38;
  --c-off-white: #ebeae1;
  --c-white: #ffffff;
  --c-teal-deep: #04888a;
  --c-teal-vibrant: #8ebeb1;
  --c-orange-deep: #f37944;
  --c-green-vibrant: #c9dc50;
  --c-border: rgba(58, 58, 56, 0.12);

  --font-sans: "Archivo", "PP Telegraf", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: "Merriweather", "Bely Bold", Georgia, serif;

  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 2px rgba(58, 58, 56, 0.04), 0 8px 24px rgba(58, 58, 56, 0.06);

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--c-off-white);
  color: var(--c-dark-grey);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.55;
  text-align: left;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--c-teal-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Header */
.site-header {
  background: var(--c-off-white);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-md) 0;
}
.header-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-lg);
}
.wordmark {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  color: var(--c-dark-grey);
}
.wordmark sup { font-size: 0.55em; top: -0.6em; }
.wordmark:hover { text-decoration: none; }
.powered-by {
  color: var(--c-dark-grey);
  opacity: 0.7;
  font-size: 0.85rem;
}

/* Hero */
.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  border-bottom: 1px solid var(--c-border);
}
.eyebrow {
  margin: 0 0 var(--space-sm);
  color: var(--c-teal-deep);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0 0 var(--space-md);
  font-weight: 400;
  font-size: clamp(2rem, 4vw + 1rem, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.hero .lede {
  max-width: 62ch;
  margin: 0;
  font-size: 1.1rem;
  color: var(--c-dark-grey);
}
.hero .lede + .lede { margin-top: var(--space-md); }
.hero .lede.note {
  font-size: 1rem;
  border-left: 3px solid var(--c-teal-deep);
  padding-left: var(--space-md);
  opacity: 0.92;
}

/* Video list */
.videos { padding: var(--space-2xl) 0; }
.video-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-xl);
}

.video-card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
}

.video-card .video-frame {
  position: relative;
  background: var(--c-dark-grey);
  aspect-ratio: 16 / 9;
}
.video-card .video-frame iframe,
.video-card .video-frame .placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video-card .placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #3a3a38 0%, #04888a 100%);
  color: var(--c-white);
  font-size: 0.9rem;
  padding: var(--space-lg);
  text-align: center;
}

.video-card .video-body {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  min-width: 0;
}
.video-card .tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-teal-deep);
  background: rgba(4, 136, 138, 0.08);
  padding: 4px 10px;
  border-radius: 999px;
}
.video-card h2 {
  margin: 0;
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.2;
}
.video-card p {
  margin: 0;
  color: var(--c-dark-grey);
  opacity: 0.85;
}

@media (max-width: 760px) {
  .video-card { grid-template-columns: 1fr; }
  .video-card .video-body { padding: var(--space-lg); }
}

/* Layout toggle link */
.layout-toggle {
  margin: var(--space-lg) 0 0;
  font-size: 0.9rem;
}
.layout-toggle a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--c-teal-deep);
  font-weight: 700;
}
.layout-toggle a::after { content: "→"; transition: transform 0.15s ease; }
.layout-toggle a:hover::after { transform: translateX(3px); }

/* YouTube-style grid */
.grid-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-xl) var(--space-lg);
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.tile { margin: 0; }

.tile-button {
  display: block;
  width: 100%;
  background: transparent;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.tile-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--c-dark-grey);
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.tile-button:hover .tile-thumb,
.tile-button:focus-visible .tile-thumb {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(58,58,56,0.06), 0 14px 36px rgba(58,58,56,0.12);
}
.tile-button:focus-visible { outline: none; }
.tile-button:focus-visible .tile-thumb { outline: 3px solid var(--c-teal-deep); outline-offset: 3px; }

.tile-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.tile-thumb .placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #3a3a38 0%, #04888a 100%);
  color: var(--c-white);
  font-size: 0.85rem;
}

.tile-play {
  position: absolute;
  right: var(--space-sm);
  bottom: var(--space-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(58,58,56,0.85);
  color: var(--c-white);
  border-radius: 999px;
  backdrop-filter: blur(2px);
  opacity: 0.95;
  transition: transform 0.15s ease, background 0.15s ease;
}
.tile-button:hover .tile-play {
  background: var(--c-teal-deep);
  transform: scale(1.05);
}

.tile-meta {
  padding: var(--space-md) 0 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tile-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-dark-grey);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tile-meta .tag { align-self: flex-start; }

.tile-summary {
  margin: 4px 0 0;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--c-dark-grey);
  opacity: 0.85;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.tile-button:hover .tile-summary,
.tile-button:focus-visible .tile-summary {
  -webkit-line-clamp: 99;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: var(--space-lg);
}
.modal[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(58,58,56,0.7);
  backdrop-filter: blur(2px);
}
.modal-dialog {
  position: relative;
  background: var(--c-white);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
  max-width: 880px;
  width: 100%;
  max-height: calc(100vh - 4rem);
  overflow: auto;
}
.modal-close {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 36px;
  height: 36px;
  border: 0;
  background: rgba(255,255,255,0.9);
  color: var(--c-dark-grey);
  border-radius: 999px;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  z-index: 2;
}
.modal-close:hover { background: var(--c-white); }
.modal-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--c-dark-grey);
  border-top-left-radius: var(--radius-lg);
  border-top-right-radius: var(--radius-lg);
  overflow: hidden;
}
.modal-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.modal-frame .placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-white);
  background: linear-gradient(135deg, #3a3a38 0%, #04888a 100%);
}
.modal-body {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.modal-body h2 {
  margin: 0;
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.2;
}
.modal-body p {
  margin: 0;
  color: var(--c-dark-grey);
  opacity: 0.9;
}
.modal-body .tag { align-self: flex-start; }

/* Empty state */
.empty-state {
  padding: var(--space-xl);
  background: var(--c-white);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--c-dark-grey);
  opacity: 0.8;
}
.empty-state code {
  background: rgba(58, 58, 56, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--c-border);
  padding: var(--space-xl) 0;
  margin-top: var(--space-2xl);
}
.site-footer p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.7;
}