/* Keep the rotating island map, using the same quiet surfaces as the rest of the site. */
body.world-page,
body.world-page:is(.theme-light, .theme-dark):not(.auth-page-body) {
  --world-paper: var(--ui-text);
  --world-muted: var(--ui-muted);
  --world-line: var(--ui-line);
  --world-panel: var(--ui-surface-soft);
  --world-panel-strong: var(--ui-surface);
  --world-orbit-line: color-mix(in srgb, var(--ui-accent) 25%, var(--ui-line));
  --world-orbit-line-soft: transparent;
  --world-orbit-control: var(--ui-surface);
  --world-orbit-control-hover: var(--ui-surface-soft);
  --world-orbit-focus: var(--ui-focus);
  --world-course-accent: var(--ui-accent);
  --world-coming-surface: var(--ui-surface-soft);
  --world-coming-text: var(--ui-muted);
  background:
    radial-gradient(ellipse at 55% 45%, var(--ui-accent-soft), transparent 65%), var(--ui-page) !important;
}

body.world-page::before,
body.world-page::after,
body.world-page .world-explorer::before,
body.world-page .island-course-stage::before,
body.world-page .world-core-halo {
  display: none;
}

body.world-page .world-explorer,
body.world-page .island-course-stage {
  min-height: 100dvh;
  padding: 112px clamp(20px, 3vw, 42px) 38px;
}

body.world-page:not(.auth-page-body) .world-main::before {
  display: flex !important;
}

body.world-page .world-explorer-intro {
  width: min(100%, 760px);
  gap: 10px;
  padding: 0;
  text-align: left;
}

body.world-page .world-explorer-kicker,
body.world-page #island-course-code {
  color: var(--ui-muted) !important;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

body.world-page .world-explorer-intro h1,
body.world-page #island-course-title {
  font-size: clamp(1.65rem, 2.6vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0;
}

body.world-page .world-explorer-intro > p:last-child,
body.world-page #island-course-description {
  max-width: 48rem;
  color: var(--ui-muted) !important;
  font-size: 0.94rem;
  font-weight: 400;
  line-height: 1.65;
}

body.world-page .world-orbit-shell {
  min-height: 660px;
  height: 660px;
}

body.world-page .island-orbit-item {
  width: clamp(170px, 17vw, 220px);
}

body.world-page .world-orbit .world-core {
  width: 200px;
}

body.world-page .world-orbit::before {
  border: 2px dashed var(--world-orbit-line);
  background: none;
  box-shadow: none;
  animation: none;
}

body.world-page .world-orbit::after {
  content: none;
}

body.world-page .world-core-ring {
  opacity: 0.5;
  animation-duration: 28s;
}

body.world-page .island-orbit-visual {
  animation-duration: 8s;
}

body.world-page .island-orbit-visual img {
  filter: drop-shadow(0 10px 10px rgba(15, 40, 43, 0.15));
}

body.world-page .island-orbit-item:is(.is-active, [data-status='active']) .island-orbit-visual {
  filter: saturate(0.82);
}

body.world-page .island-orbit-item:is(.is-coming, [data-status='coming']) .island-orbit-visual {
  filter: grayscale(0.5) brightness(0.95);
}

body.world-page .island-orbit-copy,
body.world-page .world-orbit .world-core > .world-core-identity,
body.world-page .island-course-planet > .island-course-identity {
  border: 1px solid var(--ui-line);
  border-radius: 14px;
  background: var(--ui-surface);
  box-shadow: 0 4px 0 color-mix(in srgb, var(--ui-line) 60%, transparent);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.world-page .island-orbit-copy small,
body.world-page .world-orbit .world-core-kicker {
  color: var(--ui-muted) !important;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

body.world-page .world-orbit .world-core > .world-core-identity {
  width: 110%;
  min-width: 210px;
  padding: 9px 12px;
}

body.world-page .world-orbit .world-core strong {
  font-size: 1.5rem;
  font-weight: 700;
}

body.world-page .world-core-description {
  font-size: 0.82rem;
}

body.world-page .world-orbit-control,
body.world-page .island-course-control {
  width: 44px;
  height: 44px;
  border: 1px solid var(--ui-line-strong);
  box-shadow: 0 3px 0 var(--ui-line);
}

body.world-page .world-orbit-footer {
  max-width: 720px;
  margin-top: 0;
  padding: 16px 0 0;
  border: 0;
  border-top: 1px solid var(--ui-line);
  border-radius: 0;
  background: none;
}

body.world-page .world-orbit-instruction,
body.world-page .world-orbit-status,
body.world-page .island-course-instruction,
body.world-page .island-course-status {
  font-size: 0.84rem;
  font-weight: 400;
}

body.world-page .island-course-stage > header {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

body.world-page .island-course-back {
  position: static;
  grid-row: auto;
  justify-self: start;
  min-height: 44px;
  padding: 8px 14px;
  border-color: var(--ui-line);
  border-radius: 12px;
  box-shadow: none;
  font-size: 0.88rem;
  font-weight: 500;
}

body.world-page .island-course-system {
  --course-planet-size: clamp(104px, 10vw, 132px);
  height: 720px;
  margin-top: 24px;
}

body.world-page .island-course-system:focus-visible {
  outline: 2px dashed var(--ui-line-strong);
  outline-offset: 4px;
  border-radius: 20px;
}

body.world-page .island-course-hub {
  width: min(300px, calc(100% - var(--course-planet-size) - 270px));
}

body.world-page .island-course-hub img {
  filter: saturate(0.85) drop-shadow(0 12px 12px rgba(15, 40, 43, 0.16));
}

body.world-page .island-course-orbit::after {
  border: 2px dashed var(--world-orbit-line);
  box-shadow: none;
}

body.world-page .island-course-planet::before {
  /* Follow the transparent illustration outline instead of shading a rectangular box. */
  filter: contrast(0.9) brightness(1.08) saturate(0.75) drop-shadow(0 7px 9px rgba(5, 49, 55, 0.24));
  box-shadow: none;
}

body.world-page .island-course-planet::after {
  opacity: 0.7;
  box-shadow: none;
}

body.world-page .island-course-planet > .island-course-identity {
  width: 200px;
  gap: 5px;
  padding: 10px 12px;
}

body.world-page .island-course-identity > small {
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

body.world-page .island-course-identity > strong {
  font-size: 1rem;
  font-weight: 600;
}

body.world-page .island-course-identity > span:not(.island-course-action) {
  font-size: 0.78rem;
  font-weight: 400;
}

body.world-page .island-course-identity > .island-course-action {
  color: var(--ui-accent) !important;
  font-size: 0.78rem;
  font-weight: 500;
}

body.world-page .world-modal {
  border-color: var(--ui-line);
  border-radius: 20px;
  box-shadow: var(--ui-shadow);
}

body.world-page .world-modal::backdrop {
  background: rgba(8, 22, 27, 0.55);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

body.world-page .world-modal-visual {
  background: var(--ui-surface-soft);
}

@media (max-width: 900px) {
  body.world-page:not(.auth-page-body) .world-main::before {
    left: 0;
    right: 0;
    padding-left: calc(16px + env(safe-area-inset-left, 0px));
  }

  body.world-page .world-explorer,
  body.world-page .island-course-stage {
    padding: 144px 20px calc(136px + env(safe-area-inset-bottom, 0px));
  }

  body.world-page .world-orbit .world-core > .world-core-identity {
    min-width: 170px;
  }

  body.world-page .world-orbit .world-core {
    width: 150px;
  }

  body.world-page .island-orbit-item {
    width: clamp(150px, 23vw, 190px);
  }

  body.world-page .island-course-hub {
    width: min(240px, 32vw);
  }
}

@media (max-width: 640px) {
  body.world-page .world-explorer,
  body.world-page .island-course-stage {
    padding-inline: 16px;
  }

  body.world-page .world-explorer-intro h1,
  body.world-page #island-course-title {
    font-size: 1.6rem;
  }

  body.world-page .world-orbit-shell {
    min-height: 630px;
    height: 630px;
  }

  body.world-page .island-orbit-item {
    width: clamp(122px, 37vw, 154px);
  }

  body.world-page .world-orbit .world-core {
    width: 138px;
  }

  body.world-page .island-orbit-copy {
    padding: 8px;
    gap: 4px;
    grid-template-columns: minmax(0, 1fr);
  }

  body.world-page .island-orbit-copy small {
    font-size: 0.65rem;
  }

  body.world-page .island-orbit-copy strong {
    font-size: 0.86rem;
  }

  body.world-page .island-orbit-copy > span:last-child {
    display: none;
  }

  body.world-page .world-orbit .world-core > .world-core-identity {
    width: 114%;
    min-width: 166px;
    gap: 6px;
    padding: 8px;
  }

  body.world-page .world-orbit .world-core strong {
    font-size: 1.1rem;
  }

  body.world-page .world-core-description {
    font-size: 0.72rem;
  }

  body.world-page .island-course-system {
    --course-planet-size: 80px;
    height: 840px;
    margin-top: 16px;
  }

  body.world-page .island-course-hub {
    width: min(48vw, 180px);
  }

  body.world-page .island-course-orbit::after {
    width: calc(100% - 84px);
    height: 580px;
  }

  body.world-page .island-course-node[data-course-slot='0'] {
    --course-track-x: calc(93.3013% - 36.3731px);
    --course-track-y: calc(48% + 145px);
  }

  body.world-page .island-course-node[data-course-slot='1'] {
    --course-track-x: 50%;
    --course-track-y: calc(48% + 290px);
  }

  body.world-page .island-course-node[data-course-slot='2'] {
    --course-track-x: calc(6.6987% + 36.3731px);
    --course-track-y: calc(48% + 145px);
  }

  body.world-page .island-course-node[data-course-slot='3'] {
    --course-track-x: calc(6.6987% + 36.3731px);
    --course-track-y: calc(48% - 145px);
  }

  body.world-page .island-course-node[data-course-slot='4'] {
    --course-track-x: 50%;
    --course-track-y: calc(48% - 290px);
  }

  body.world-page .island-course-node[data-course-slot='5'] {
    --course-track-x: calc(93.3013% - 36.3731px);
    --course-track-y: calc(48% - 145px);
  }

  body.world-page .island-course-planet > .island-course-identity {
    width: 150px;
    padding: 9px 10px;
    text-align: left;
    /* The label is wider than the 80px planet; keep edge slots inside the viewport. */
    transform: translateX(calc(-50% + var(--course-label-shift, 0px)));
    transition: transform 520ms ease;
  }

  body.world-page .island-course-node:is([data-course-slot='0'], [data-course-slot='5']) {
    --course-label-shift: -35px;
  }

  body.world-page .island-course-node:is([data-course-slot='2'], [data-course-slot='3']) {
    --course-label-shift: 35px;
  }

  body.world-page .island-course-node:only-child {
    --course-label-shift: 0px;
  }

  body.world-page .island-course-node:only-child[data-course-slot='0'] {
    --course-label-shift: -35px;
  }

  body.world-page .island-course-node:only-child[data-course-slot='3'] {
    --course-label-shift: 35px;
  }

  body.world-page .island-course-identity > strong {
    font-size: 0.92rem;
  }

  body.world-page .island-course-identity > span:not(.island-course-action) {
    display: none;
  }

  body.world-page .island-course-control {
    top: auto;
    bottom: -56px;
    transform: none;
  }

  body.world-page .island-course-control[data-course-step='-1'] {
    left: calc(50% - 52px);
  }

  body.world-page .island-course-control[data-course-step='1'] {
    right: calc(50% - 52px);
  }

  body.world-page .island-course-instruction {
    margin-top: 76px;
  }

  /* A single course can keep a compact orbit; larger groups retain room for every label. */
  body.world-page .island-course-system:has(.island-course-node:only-child) {
    height: 540px;
  }

  body.world-page .island-course-system:has(.island-course-node:only-child) .island-course-hub {
    width: 130px;
  }

  body.world-page
    .island-course-system:has(.island-course-node:only-child)
    .island-course-orbit::after {
    width: calc(100% - 80px);
    height: 68%;
  }

  body.world-page .island-course-node:only-child[data-course-slot='0'] {
    --course-track-x: calc(100% - 40px);
    --course-track-y: 48%;
  }

  body.world-page .island-course-node:only-child[data-course-slot='1'] {
    --course-track-x: calc(75% - 20px);
    --course-track-y: 77.4449%;
  }

  body.world-page .island-course-node:only-child[data-course-slot='2'] {
    --course-track-x: calc(25% + 20px);
    --course-track-y: 77.4449%;
  }

  body.world-page .island-course-node:only-child[data-course-slot='3'] {
    --course-track-x: 40px;
    --course-track-y: 48%;
  }

  body.world-page .island-course-node:only-child[data-course-slot='4'] {
    --course-track-x: calc(25% + 20px);
    --course-track-y: 18.5551%;
  }

  body.world-page .island-course-node:only-child[data-course-slot='5'] {
    --course-track-x: calc(75% - 20px);
    --course-track-y: 18.5551%;
  }

  body.world-page .world-modal {
    max-height: calc(100dvh - 24px);
  }
}

@media (prefers-reduced-motion: reduce) {
  body.world-page .island-course-node:nth-child(n),
  body.world-page .island-course-planet > .island-course-identity {
    transition: none;
  }

  body.world-page .island-orbit-visual,
  body.world-page .world-core-ring {
    animation: none;
  }
}