/* ==========================================================================
   IMMERSION — enrolled course page
   Ref: handoff § Phase 2.
   ========================================================================== */

.imm-course {
  max-width: var(--imm-content-max);
  margin-inline: auto;
  padding: var(--imm-s-11) var(--imm-s-12) var(--imm-s-13);
}

/* --- Breadcrumb and title ------------------------------------------------- */

.imm-breadcrumb {
  display: flex;
  gap: var(--imm-s-2);
  margin-bottom: var(--imm-s-3);
  font-size: 12.5px;
  color: var(--imm-faint);
}

.imm-breadcrumb a { color: var(--imm-faint); text-decoration: none; }
.imm-breadcrumb a:hover { color: var(--imm-teal); }

.imm-course__title {
  margin-bottom: var(--imm-s-7);
  font-size: 31px;
}

/* --- Progress strip ------------------------------------------------------- */

.imm-course__progress { margin-bottom: var(--imm-s-8); }

.imm-course__progress-label {
  margin-bottom: var(--imm-s-2);
  font-size: 14px;
  color: var(--imm-muted);
}

.imm-course__progress-label strong { color: var(--imm-ink); font-weight: 700; }

/* --- Day tracker ---------------------------------------------------------- */

.imm-tracker {
  display: flex;
  gap: var(--imm-s-1);
  margin: 0 0 var(--imm-s-9);
  padding: 0;
  list-style: none;
}

.imm-tracker__cell { flex: 1 1 0; min-width: 0; }

.imm-tracker__cell a {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 32px;
  border-radius: var(--imm-r-day);
  font-size: 12.5px;
  font-weight: 700;
  text-decoration: none;
  transition: background-color var(--imm-t-btn), color var(--imm-t-btn);
}

.imm-tracker__cell.is-done a {
  background: var(--imm-teal);
  color: #fff;
}

.imm-tracker__cell.is-today a {
  background: var(--imm-paper);
  border: 2px solid var(--imm-red);
  color: var(--imm-red);
}

.imm-tracker__cell.is-future a {
  background: var(--imm-line-4);
  color: var(--imm-faint);
}

.imm-tracker__cell.is-checkpoint a {
  background: var(--imm-magenta-wash);
  color: var(--imm-magenta);
}

/* --- Layout --------------------------------------------------------------- */

.imm-course__body {
  display: grid;
  grid-template-columns: 1fr var(--imm-rail);
  gap: var(--imm-s-8);
  align-items: start;
}

.imm-course__main { min-width: 0; }

/* --- Today's card --------------------------------------------------------- */

.imm-today {
  margin-bottom: var(--imm-s-9);
  padding: var(--imm-s-9) var(--imm-s-10);
  background: var(--imm-ink);
  border-radius: var(--imm-r-feature);
  color: var(--imm-on-dark);
}

.imm-today__title {
  margin: var(--imm-s-3) 0 var(--imm-s-2);
  color: #fff;
  font-size: 24px;
}

.imm-today__meta {
  margin-bottom: var(--imm-s-6);
  color: var(--imm-faint-dark-2);
  font-size: 14.5px;
}

/* --- Step list ------------------------------------------------------------ */

.imm-steps { display: grid; gap: var(--imm-s-3); }

.imm-day {
  padding: var(--imm-s-7);
  background: var(--imm-paper);
  border: 1px solid var(--imm-line);
  border-radius: var(--imm-r-panel);
}

.imm-day.is-today { border-color: var(--imm-red-wash-line); }
.imm-day.is-checkpoint { border-color: var(--imm-magenta-line); }
.imm-day.is-locked { background: var(--imm-canvas); }

.imm-day__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--imm-s-3);
  margin-bottom: var(--imm-s-3);
}

.imm-day__number {
  margin: 0;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: var(--imm-track-eyebrow);
  text-transform: uppercase;
  color: var(--imm-faint);
}

.imm-day__title { margin: 0; font-size: 17.5px; }
.imm-day__title a { color: var(--imm-ink); text-decoration: none; }
.imm-day__title a:hover { color: var(--imm-teal); }
.imm-day.is-locked .imm-day__title { color: var(--imm-faint); }

.imm-chip--checkpoint {
  background: var(--imm-magenta-wash);
  border: 1px solid var(--imm-magenta-line);
  color: var(--imm-magenta);
}

/* --- Steps ---------------------------------------------------------------- */

.imm-day__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--imm-line-3);
}

.imm-step {
  display: flex;
  align-items: center;
  gap: var(--imm-s-3);
  padding: var(--imm-s-3) 0;
  border-bottom: 1px solid var(--imm-line-3);
}

.imm-step:last-child { border-bottom: 0; }

.imm-step__mark {
  flex: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--imm-line-dashed);
  border-radius: var(--imm-r-pill);
}

.imm-step.is-complete .imm-step__mark {
  background: var(--imm-teal);
  border-color: var(--imm-teal);
  /* Checkmark drawn with a border rather than an icon font, so it inherits
     colour and needs no extra asset. */
  background-image: linear-gradient(45deg, transparent 45%, #fff 45%, #fff 55%, transparent 55%),
                    linear-gradient(-45deg, transparent 45%, #fff 45%, #fff 55%, transparent 55%);
  background-size: 60% 2px, 60% 2px;
  background-position: 2px 10px, 6px 10px;
  background-repeat: no-repeat;
}

.imm-step.is-current .imm-step__mark { border-color: var(--imm-red); }

.imm-step__title { flex: 1; min-width: 0; font-size: 15px; }
.imm-step__title a { color: var(--imm-body); text-decoration: none; }
.imm-step__title a:hover { color: var(--imm-teal); }

.imm-step.is-locked .imm-step__title { color: var(--imm-faint); }

.imm-step__lock { font-size: 13px; color: var(--imm-faint); }

.imm-pill {
  flex: none;
  padding: 6px 12px;
  border-radius: var(--imm-r-pill);
  background: var(--imm-red-wash);
  border: 1px solid var(--imm-red-wash-line);
  color: var(--imm-red);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.imm-pill:hover { background: var(--imm-red); border-color: var(--imm-red); color: #fff; }

/* --- Right rail ----------------------------------------------------------- */

.imm-rail { display: grid; gap: var(--imm-s-4); }

.imm-rail__card {
  padding: var(--imm-s-7);
  background: var(--imm-paper);
  border: 1px solid var(--imm-line);
  border-radius: var(--imm-r-panel);
}

.imm-rail__card--checkpoint {
  background: var(--imm-magenta-wash-2);
  border-color: var(--imm-magenta-line);
}

.imm-rail__stat {
  margin: var(--imm-s-2) 0 var(--imm-s-1);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: var(--imm-track-h1);
  color: var(--imm-ink);
}

.imm-rail__stat span {
  font-size: 17px;
  font-weight: 600;
  color: var(--imm-faint);
}

.imm-rail__note { margin: 0; font-size: 13.5px; color: var(--imm-faint); }

.imm-rail__checkpoint { margin: var(--imm-s-2) 0 var(--imm-s-1); font-size: 15px; font-weight: 700; }
.imm-rail__checkpoint a { color: var(--imm-magenta); text-decoration: none; }

.imm-rail__materials { font-size: 14px; }
.imm-rail__materials ul { margin: 0; padding-left: 1.1em; }

/* --- Mobile ---------------------------------------------------------------
   Handoff § Phase 12: the day strip scrolls horizontally with today in view.
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .imm-course { padding: var(--imm-s-7) var(--imm-s-5) var(--imm-s-11); }

  .imm-course__body { grid-template-columns: 1fr; }

  .imm-tracker {
    overflow-x: auto;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .imm-tracker__cell {
    flex: 0 0 44px;
    scroll-snap-align: center;
  }

  /* 44px minimum hit target on touch. */
  .imm-tracker__cell a { height: 44px; }

  /* Handoff § Phase 12: Resume becomes full-width. The row wraps so the pill
     can take the line rather than squeezing the step title. */
  .imm-step { flex-wrap: wrap; }

  .imm-step__title { flex: 1 1 100%; }

  .imm-pill {
    width: 100%;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

/* Time invested reads as a phrase ("3h 12m"), not a bare numeral, so it wants
   a smaller size than the numeric stats above it. */
.imm-rail__stat--time strong { font-size: 24px; }

/* --- Dashboard (front page) ------------------------------------------------
   Reuses the course page's today card, rail and card grid.
   -------------------------------------------------------------------------- */

.imm-dashboard {
  max-width: var(--imm-content-max);
  margin-inline: auto;
  padding: var(--imm-s-11) var(--imm-s-12) var(--imm-s-13);
}

.imm-dashboard .imm-page-title { margin-bottom: var(--imm-s-8); }

.imm-dashboard__body {
  display: grid;
  grid-template-columns: 1fr var(--imm-rail);
  gap: var(--imm-s-8);
  align-items: start;
}

.imm-dashboard__main { min-width: 0; }

.imm-dashboard__h2 { margin: 0 0 var(--imm-s-5); font-size: 19px; }

.imm-dashboard__courses { margin-top: var(--imm-s-9); }

.imm-dashboard__links {
  margin: var(--imm-s-3) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--imm-s-3);
  font-size: 14px;
}

.imm-dashboard__links a { text-decoration: none; }

.imm-dashboard .imm-course-card__body .imm-progress { margin-top: var(--imm-s-4); }

@media (max-width: 900px) {
  .imm-dashboard { padding: var(--imm-s-7) var(--imm-s-5) var(--imm-s-11); }
  .imm-dashboard__body { grid-template-columns: 1fr; }
}