:root {
  --bg: #0c0d0f;
  --bg-soft: #111214;
  --panel: rgba(17, 18, 20, 0.62);
  --panel-strong: rgba(12, 13, 15, 0.9);
  --line: rgba(255, 255, 255, 0.12);
  --text: #e5e5e5;
  --text-dim: #9aa3b2;
  --accent: #c7d2fe;
  --accent-strong: #e0e7ff;
  --header-h: 124px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  background:
    radial-gradient(circle at top right, rgba(199, 210, 254, 0.14), transparent 24%),
    radial-gradient(circle at bottom left, rgba(72, 187, 120, 0.1), transparent 26%),
    linear-gradient(180deg, #0c0d0f, #090a0c 58%);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 3px 3px, 4px 4px;
  mix-blend-mode: soft-light;
  z-index: 1;
}

a,
button {
  color: inherit;
}

button {
  font: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 10003;
  padding: 0.6rem 0.8rem;
  border-radius: 999px;
  background: var(--panel-strong);
  border: 2px solid var(--line);
  transform: translateY(-180%);
  transition: transform 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.tube-site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 10002;
  pointer-events: none;
}

.tube-site-header .topbar {
  pointer-events: auto;
  background: rgba(12, 13, 15, 0.9);
  backdrop-filter: blur(18px) saturate(120%);
}

.tube-site-header .topbar-content {
  min-height: 56px;
}

.tube-subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding:
    0.18rem
    max(1rem, env(safe-area-inset-right))
    0.78rem
    max(1rem, env(safe-area-inset-left));
  background: linear-gradient(180deg, rgba(12, 13, 15, 0.84), rgba(12, 13, 15, 0.58) 68%, transparent);
}

.tube-subbar__copy,
.tube-subbar__controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  pointer-events: auto;
}

.tube-subbar__copy {
  min-width: 0;
  flex-wrap: wrap;
  flex: 1 1 auto;
}

.tube-subbar__controls {
  flex: 0 0 auto;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.tube-subbar__strap,
.tube-subbar__status {
  margin: 0;
}

.tube-subbar__strap {
  color: var(--text-dim);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.tube-subbar__status {
  color: var(--text-dim);
  font-size: 0.92rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tube-subbar__button {
  appearance: none;
  border: 2px solid var(--line);
  background: rgba(17, 18, 20, 0.86);
  border-radius: 999px;
  min-height: 2.2rem;
  padding: 0.45rem 0.9rem;
  color: var(--text);
  cursor: pointer;
}

.tube-subbar__button[aria-pressed="false"] {
  background: rgba(199, 210, 254, 0.12);
  border-color: rgba(199, 210, 254, 0.22);
}

.ecosystem-nav {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tube-feed {
  position: relative;
  height: 100dvh;
  overflow-y: auto;
  overflow-x: hidden;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.tube-card {
  position: relative;
  min-height: 100dvh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  align-items: flex-end;
  padding:
    calc(var(--header-h) + 1.75rem + env(safe-area-inset-top))
    max(1rem, env(safe-area-inset-right))
    calc(1.5rem + env(safe-area-inset-bottom))
    max(1rem, env(safe-area-inset-left));
  background: #090a0c;
}

.tube-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 8, 10, 0.08) 0%, rgba(7, 8, 10, 0.04) 24%, rgba(7, 8, 10, 0.34) 62%, rgba(7, 8, 10, 0.72) 100%);
  z-index: 1;
}

.tube-video,
.tube-card__shade,
.tube-card__measure {
  position: absolute;
  inset: 0;
}

.tube-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background:
    radial-gradient(circle at center, rgba(199, 210, 254, 0.16), transparent 28%),
    #05070a;
}

.tube-card__shade {
  background:
    linear-gradient(180deg, rgba(12, 13, 15, 0.08), transparent 28%),
    radial-gradient(circle at 80% 20%, rgba(199, 210, 254, 0.12), transparent 25%),
    radial-gradient(circle at 20% 80%, rgba(72, 187, 120, 0.12), transparent 22%);
  z-index: 1;
}

.tube-card__measure {
  background-image:
    repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.04) 1px, transparent 1px, transparent 4px);
  opacity: 0.05;
  mix-blend-mode: screen;
  z-index: 1;
}

.tube-card__body {
  position: relative;
  z-index: 2;
  width: min(100%, 42rem);
  padding: 0.2rem;
  border: 2px solid var(--line);
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(17, 18, 20, 0.68), rgba(17, 18, 20, 0.48)),
    rgba(17, 18, 20, 0.54);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.26);
  backdrop-filter: blur(14px) saturate(110%);
}

.tube-card.is-active .tube-card__body,
.tube-card:not(.is-expanded) .tube-card__body:hover {
  border-color: rgba(199, 210, 254, 0.24);
}

.tube-card__peek {
  appearance: none;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  width: 100%;
  min-height: 3rem;
  padding: 0.38rem 0.9rem 0.38rem 1rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  text-align: left;
}

.tube-card__peek-meta,
.tube-card__peek-cue {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.tube-card__peek-meta {
  color: var(--text-dim);
}

.tube-card__peek-title {
  min-width: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tube-card__peek-cue {
  color: var(--accent);
}

.tube-card__panel {
  display: none;
}

.tube-card.is-expanded .tube-card__body {
  width: min(100%, 31rem);
  padding: 0.9rem 0.95rem 0.88rem;
  border-radius: 0.35rem;
}

.tube-card.is-expanded .tube-card__peek {
  display: none;
}

.tube-card.is-expanded .tube-card__panel {
  display: block;
}

.tube-card__eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.tube-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.32rem 0.62rem;
  border-radius: 0.3rem;
  border: 2px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-dim);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tube-pill--license {
  color: #ecfff3;
  background: rgba(72, 187, 120, 0.16);
  border-color: rgba(72, 187, 120, 0.32);
}

.tube-card__copy {
  display: grid;
  gap: 0.55rem;
}

.tube-card__kicker,
.tube-card__hook,
.tube-card__summary,
.tube-card__safety {
  margin: 0;
}

.tube-card__kicker {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tube-card__title {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: clamp(1.7rem, 4.4vw, 3rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.tube-card__hook {
  font-size: clamp(1rem, 1.75vw, 1.18rem);
  color: var(--text);
  max-width: 30rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tube-card__detail-body {
  display: none;
  gap: 0.55rem;
}

.tube-card.is-expanded .tube-card__detail-body {
  display: grid;
}

.tube-card__summary,
.tube-card__safety {
  color: var(--text-dim);
  max-width: 30rem;
  line-height: 1.5;
}

.tube-card__safety {
  font-size: 0.88rem;
}

.tube-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.tube-action {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  padding: 0.55rem 0.85rem;
  border-radius: 0.3rem;
  border: 2px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
}

.tube-action:hover,
.tube-subbar__button:hover {
  text-decoration: none;
  border-color: rgba(199, 210, 254, 0.24);
}

.tube-action--link {
  background: rgba(199, 210, 254, 0.12);
  color: var(--accent-strong);
}

.tube-toast {
  position: fixed;
  left: 50%;
  bottom: calc(1rem + env(safe-area-inset-bottom));
  z-index: 10003;
  transform: translateX(-50%);
  padding: 0.65rem 0.95rem;
  border-radius: 999px;
  background: rgba(17, 18, 20, 0.82);
  border: 2px solid var(--line);
  color: var(--text-dim);
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.tube-read-more-wrap {
  position: fixed;
  left: 50%;
  bottom: calc(4.4rem + env(safe-area-inset-bottom));
  z-index: 10003;
  transform: translateX(-50%);
}

.tube-top-btn {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right));
  bottom: calc(1rem + env(safe-area-inset-bottom));
  z-index: 10003;
  min-width: 3rem;
  min-height: 2.6rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 2px solid var(--line);
  background: rgba(17, 18, 20, 0.88);
  color: var(--text);
  box-shadow: var(--shadow);
  display: none;
}

.tube-top-btn.show {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.feed-tail {
  height: 1px;
}

@media (max-width: 980px) {
  .tube-subbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .tube-subbar__controls {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  :root {
    --header-h: 152px;
  }

  .tube-card__body {
    width: 100%;
    border-radius: 0.35rem;
  }

  .tube-card:not(.is-expanded) .tube-card__body {
    border-radius: 0.35rem;
  }

  .tube-card__peek {
    grid-template-columns: minmax(0, 1fr) auto;
    padding-right: 0.75rem;
  }

  .tube-card__peek-meta {
    display: none;
  }

  .tube-card__title {
    font-size: clamp(1.7rem, 9vw, 2.5rem);
  }

  .tube-subbar__copy,
  .tube-subbar__controls,
  .tube-subbar__strap,
  .tube-subbar__status {
    width: 100%;
  }

  .tube-subbar__status {
    white-space: normal;
  }
}

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

  .skip-link {
    transition: none;
  }
}