/* Compact plan navigation for phones.
   Desktop/tablet retain the existing tile grid. Course map has its own mobile HUD. */
.plan-nav__toggle[hidden],
.plan-nav__panel[hidden] { display: none; }

.plan-nav__toggle {
  width: 100%;
  min-height: 48px;
  padding: 6px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border: 0;
  background: transparent;
  color: var(--text-hi);
  text-align: left;
  cursor: pointer;
  font: 700 18px 'Big Shoulders Display', system-ui;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.plan-nav__current {
  display: inline-block;
  margin-left: 12px;
  color: var(--accent);
  font: 11px 'JetBrains Mono', monospace;
}
.plan-nav__chevron { transition: transform 180ms ease; }
.plan-nav__toggle[aria-expanded="true"] .plan-nav__chevron { transform: rotate(180deg); }
.plan-nav__toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

@media (max-width: 768px) {
  .app-shell:not(:has(.course-page--stage)) .plan-nav {
    padding: 0 4px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav:has(.plan-nav__toggle:not([hidden])) .plan-nav__header {
    display: none;
  }
  .plan-nav__panel:not([hidden]) { animation: plan-nav-open 180ms ease-out; }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__header {
    margin-bottom: 12px;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__links {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 12px;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    min-height: 54px;
    gap: 12px;
    padding: 9px 42px 9px 12px;
    border: 1px solid transparent;
    border-radius: 10px;
    background: var(--bg-2);
    color: var(--text-md);
    text-align: left;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link::after {
    content: "\203A";
    position: absolute;
    top: 50%;
    right: 14px;
    transform: translateY(-52%);
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 25px;
    font-weight: 400;
    line-height: 1;
    color: var(--text-lo);
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link-icon {
    width: 26px;
    height: 26px;
    flex: 0 0 26px;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link-icon svg,
  .app-shell:not(:has(.course-page--stage)) .plan-nav__link-icon img {
    width: 24px;
    height: 24px;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link-label {
    flex: 1;
    min-width: 0;
    font-size: 15px;
    line-height: 1;
    letter-spacing: 0.07em;
    text-align: left;
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link.active,
  .app-shell:not(:has(.course-page--stage)) .plan-nav__link[aria-current="page"] {
    background: var(--accent-soft);
    color: var(--text-hi);
    border-color: color-mix(in srgb, var(--accent) 38%, var(--line));
    box-shadow: inset 3px 0 0 var(--accent);
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link.active .plan-nav__link-icon,
  .app-shell:not(:has(.course-page--stage)) .plan-nav__link[aria-current="page"] .plan-nav__link-icon {
    color: var(--accent);
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__link.active::after,
  .app-shell:not(:has(.course-page--stage)) .plan-nav__link[aria-current="page"]::after {
    color: var(--accent);
  }

  .app-shell:not(:has(.course-page--stage)) .plan-nav__back-link {
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

@keyframes plan-nav-open {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .plan-nav__panel:not([hidden]) { animation: none; }
  .plan-nav__chevron, .plan-nav__link { transition: none; }
}