/* ==========================================================================
   Measuring tape — the visual thread of the site
   ========================================================================== */

.tape{
  --tape-h: 40px;
  position: relative;
  height: var(--tape-h);
  background: var(--color-lime);
  overflow: hidden;
}
.tape::before,
.tape::after{
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  background-repeat: repeat-x;
  background-position: right center;
  pointer-events: none;
}
.tape::before{
  height: 34%;
  background-image: repeating-linear-gradient(to left, var(--color-black) 0 2px, transparent 2px 20px);
}
.tape::after{
  height: 64%;
  background-image: repeating-linear-gradient(to left, var(--color-black) 0 3px, transparent 3px 100px);
}
.tape-numbers{
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding-bottom: 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--color-black);
  direction: ltr;
}
.tape-numbers span{
  flex: 0 0 100px;
  text-align: left;
  padding-inline-start: 6px;
}

.tape-wrap{
  position: relative;
  width: 100%;
  overflow: hidden;
}
.js .tape-wrap .tape{
  clip-path: inset(0 0 0 100%);
  transition: clip-path 1.3s var(--ease-editorial);
}
.js .tape-wrap.is-revealed .tape{
  clip-path: inset(0 0 0 0%);
}
@media (prefers-reduced-motion: reduce){
  .js .tape-wrap .tape{ clip-path: inset(0 0 0 0%); transition: none; }
}

.tape--thin{ --tape-h: 14px; }
.tape--thin .tape-numbers{ display: none; }

.tape--divider{ --tape-h: 22px; }
.tape--divider .tape-numbers{ font-size: 9px; }

/* Tape used as a growing underline beneath headings */
.tape-underline{
  display: inline-block;
  position: relative;
  height: 0.22em;
  margin-top: 0.28em;
  background: var(--color-lime);
  width: 0;
  transition: width 0.9s var(--ease-editorial);
}
.reveal.is-visible .tape-underline,
.is-visible .tape-underline{ width: 100%; }

/* ==========================================================================
   Annotations (pencil / dimension callouts)
   ========================================================================== */

.annotation{
  font-family: var(--font-hand);
  font-size: 1.15rem;
  color: var(--color-black);
  line-height: 1.2;
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  z-index: 3;
}
.annotation svg{ width: 34px; height: 34px; flex: 0 0 auto; }

.dim-line{
  position: absolute;
  border-color: var(--color-black);
  opacity: 0.55;
  pointer-events: none;
}
.dim-line.h{ border-top: 1px dashed currentColor; }
.dim-line.v{ border-inline-start: 1px dashed currentColor; }

/* ==========================================================================
   Section frame helpers
   ========================================================================== */

.section-pad{ padding-block: var(--space-section); }

.frame-corner{
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid var(--color-black);
  opacity: 0.7;
}
.frame-corner.tl{ top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.frame-corner.tr{ top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.frame-corner.bl{ bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.frame-corner.br{ bottom: -1px; left: -1px; border-right: 0; border-top: 0; }

.masking-tape{
  position: absolute;
  background: rgba(255,90,31,0.35);
  box-shadow: 0 2px 6px rgba(17,17,17,0.08);
  border: 1px solid rgba(17,17,17,0.06);
}

/* ==========================================================================
   Chip / meta row (used on course + lesson cards)
   ========================================================================== */

.meta-row{
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--color-muted);
}
.meta-row span{ display: inline-flex; align-items: center; gap: 0.4rem; }
.meta-row span:not(:last-child)::after{
  content: '';
  width: 4px; height: 4px;
  background: currentColor;
  border-radius: 50%;
  margin-inline-start: 0.9rem;
  opacity: 0.5;
}

.level-tag{
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.7rem;
  border: 1.5px solid currentColor;
}