/* ─────────────────────────────────────────────────────────────────
   tutorials.css — Tutorials page.
   Hero → vertical stack of Arcade walkthroughs.
   Inherits tokens from landing.css (--ink, --accent, --rule, etc.)
   ───────────────────────────────────────────────────────────────── */

.tm-tut {
  background: var(--ground);
  min-height: 100vh;
}

/* ── Hero ───────────────────────────────────────────────────── */

.tm-tut-hero {
  padding: 160px 0 64px;
  border-bottom: 1px solid var(--rule);
  background: var(--surface);
}
@media (max-width: 768px) { .tm-tut-hero { padding-top: 120px; } }

.tm-tut-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-block;
  margin-bottom: 16px;
}
.tm-tut-h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 4.4vw, 56px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  color: var(--ink);
  text-wrap: balance;
  max-width: 18ch;
}
.tm-tut-hero-sub {
  margin: 20px 0 0;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: clamp(15.5px, 1.2vw, 18px);
  line-height: 1.6;
  color: var(--muted);
  text-wrap: pretty;
}
.tm-tut-hero-meta {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}
.tm-tut-hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--ink-soft);
}
.tm-tut-hero-meta i {
  color: var(--accent);
  font-size: 15px;
}

/* ── Body ───────────────────────────────────────────────────── */

.tm-tut-body {
  padding: 64px 0 120px;
}

/* ── Stack of tutorial blocks ───────────────────────────────── */

.tm-tut-stack {
  display: flex;
  flex-direction: column;
  gap: 80px;
  max-width: 1080px;
  margin: 0 auto;
}
@media (max-width: 768px) {
  .tm-tut-stack { gap: 56px; }
}

.tm-tut-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tm-tut-block-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
}
@media (max-width: 640px) {
  .tm-tut-block-head { gap: 14px; }
}

.tm-tut-block-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  padding: 4px 10px;
  border: 1px solid color-mix(in oklab, var(--accent) 22%, transparent);
  border-radius: var(--radius-full);
  background: var(--accent-wash);
  height: 26px;
  display: inline-flex;
  align-items: center;
  margin-top: 6px;
}

.tm-tut-block-head-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.tm-tut-block-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--ink);
  text-wrap: balance;
}

.tm-tut-block-lede {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted);
  text-wrap: pretty;
}

/* ── Arcade embed frame ─────────────────────────────────────── */

.tm-tut-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  background: var(--brand-ink);
  border: 1px solid var(--rule-strong);
  box-shadow: var(--shadow-card-lifted);
}
@media (max-width: 640px) {
  .tm-tut-embed { border-radius: var(--radius-xl); }
}
.tm-tut-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  color-scheme: light;
}

/* Pending / placeholder state */
.tm-tut-embed-pending {
  display: grid;
  place-items: center;
  background:
    radial-gradient(120% 90% at 100% 0%, color-mix(in oklab, var(--brand-blue) 22%, transparent), transparent 60%),
    radial-gradient(110% 90% at 0% 100%, color-mix(in oklab, var(--brand-mint) 14%, transparent), transparent 60%),
    var(--brand-ink);
  color: rgba(255, 255, 255, 0.86);
  cursor: default;
}
.tm-tut-embed-motif {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.tm-tut-embed-motif .tm-tut-pill {
  position: absolute;
  top: 14%;
  left: 18%;
  width: 56%;
  height: 22%;
  border-radius: 999px;
  background: color-mix(in oklab, var(--brand-blue) 50%, transparent);
  filter: blur(2px);
  opacity: 0.55;
}
.tm-tut-embed-motif .tm-tut-disc {
  position: absolute;
  border-radius: 50%;
}
.tm-tut-embed-motif .tm-tut-disc-blue {
  width: 22%;
  aspect-ratio: 1;
  top: 16%;
  left: 30%;
  background: var(--brand-deep);
  opacity: 0.7;
}
.tm-tut-embed-motif .tm-tut-disc-mint {
  width: 22%;
  aspect-ratio: 1;
  bottom: 14%;
  left: 30%;
  background: var(--brand-mint);
}
.tm-tut-embed-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--brand-ink);
  display: grid;
  place-items: center;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  z-index: 2;
}
.tm-tut-embed-play i { font-size: 26px; margin-left: 4px; }

.tm-tut-embed-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: linear-gradient(to top, rgba(0,0,0,0.55), transparent);
  z-index: 2;
}
.tm-tut-embed-pending-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}
.tm-tut-embed-pending-sub {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
}

/* ── Final cross-link CTA ───────────────────────────────────── */

.tm-tut-crosslink {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 32px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-xl);
  margin-top: 80px;
  max-width: 1080px;
  margin-inline: auto;
}
@media (max-width: 640px) {
  .tm-tut-crosslink {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    margin-top: 56px;
  }
}
.tm-tut-crosslink-text {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
  letter-spacing: -0.015em;
}
.tm-tut-crosslink-sub {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}