:root {
  --sheet-compact: 46dvh;
  --sheet-expanded: 76dvh;
}

/* Additive presentation layer: keep the fast map engine stable while refining hierarchy. */
.panel-toggle {
  display: none;
}

.chapter {
  position: relative;
  overflow: hidden;
}

.chapter.active::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--gold);
  box-shadow: 0 0 18px rgba(217,169,78,.35);
}

.chapter.active strong {
  color: #fff7e3;
}

.career-map-label {
  position: absolute;
  z-index: 4;
  transform: translate(14px,-50%);
  padding: 4px 7px 4px 8px;
  border-left: 2px solid var(--gold);
  border-radius: 2px 5px 5px 2px;
  background: rgba(3,16,26,.86);
  color: var(--gold-soft);
  box-shadow: 0 4px 14px rgba(0,0,0,.20);
  font-size: 10px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .01em;
  white-space: nowrap;
  pointer-events: none;
  text-shadow: 0 1px 2px rgba(0,0,0,.6);
}

.cluster.career-cluster {
  border-color: #f1cd82;
  background: rgba(25,30,29,.96);
  box-shadow: 0 0 0 6px rgba(217,169,78,.18), 0 7px 22px rgba(0,0,0,.38);
  color: #fff0c8;
}

.marker.career {
  box-shadow: 0 0 0 5px rgba(217,169,78,.20), 0 6px 20px rgba(0,0,0,.38);
}

.marker.career.selected {
  box-shadow: 0 0 0 8px rgba(241,205,130,.27), 0 7px 22px rgba(0,0,0,.42);
}

@media (min-width: 901px) {
  .panel {
    background: rgba(7,29,45,.91);
  }

  .panel-scroll {
    scrollbar-width: thin;
    scrollbar-color: rgba(217,169,78,.32) transparent;
  }
}

@media (max-width: 900px) {
  :root {
    --sheet-compact: 46dvh;
    --sheet-expanded: 76dvh;
  }

  .mode-switch {
    top: max(10px, env(safe-area-inset-top));
    left: max(10px, env(safe-area-inset-left));
  }

  .map-toolbar {
    top: max(10px, env(safe-area-inset-top));
    right: max(10px, env(safe-area-inset-right));
  }

  .attribution {
    top: calc(max(10px, env(safe-area-inset-top)) + 43px);
    right: max(10px, env(safe-area-inset-right));
    bottom: auto;
    background: rgba(3,16,26,.72);
  }

  .panel {
    max-height: min(var(--sheet-compact), 500px);
    border-radius: 16px 16px 12px 12px;
    background: rgba(7,29,45,.96);
    transition: max-height .24s ease, background-color .24s ease;
  }

  .panel.is-expanded {
    max-height: min(var(--sheet-expanded), 760px);
    background: rgba(7,29,45,.985);
  }

  .panel::before {
    content: "";
    position: sticky;
    z-index: 6;
    top: 6px;
    display: block;
    width: 34px;
    height: 4px;
    margin: 7px auto 0;
    border-radius: 999px;
    background: rgba(241,244,245,.24);
    pointer-events: none;
  }

  .panel-head {
    position: sticky;
    z-index: 5;
    top: 0;
    align-items: center;
    padding-top: 13px;
    background: linear-gradient(180deg, rgba(7,29,45,.995) 72%, rgba(7,29,45,.92));
    backdrop-filter: blur(14px);
  }

  .panel-head > div:first-child {
    min-width: 0;
  }

  .panel-head h1 {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .panel-toggle {
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 50%;
    background: rgba(255,255,255,.035);
    color: var(--gold-soft);
    cursor: pointer;
  }

  .panel-toggle:hover,
  .panel-toggle:focus-visible {
    border-color: rgba(217,169,78,.45);
    background: rgba(217,169,78,.08);
  }

  .panel-toggle-icon {
    display: block;
    font-size: 15px;
    line-height: 1;
    transition: transform .22s ease;
  }

  .panel.is-expanded .panel-toggle-icon {
    transform: rotate(180deg);
  }

  .journey {
    padding-top: 1px;
  }

  .chapters {
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
  }

  .chapter {
    scroll-snap-align: center;
  }

  .career-map-label {
    transform: translate(12px,-50%);
    padding: 3px 6px 3px 7px;
    font-size: 9px;
  }

  .detail-panel {
    max-height: min(78dvh, 760px);
  }
}

@media (max-width: 430px) {
  :root {
    --sheet-compact: 45dvh;
    --sheet-expanded: 78dvh;
  }

  .panel-head {
    padding-left: 15px;
    padding-right: 12px;
  }

  .panel-head h1 {
    font-size: 19px;
  }

  .panel-toggle {
    width: 32px;
    height: 32px;
  }

  .chapter {
    flex-basis: 124px;
  }

  .career-map-label {
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

@media (prefers-reduced-motion: reduce) {
  .panel,
  .panel-toggle-icon {
    transition: none;
  }
}