/* ==========================================================================
   Ocean Explorer — design system
   Scoped tokens, one accent, hairline borders, flat surfaces.
   All class names are contractual: explorer.js / explorer-journey.js /
   explorer-game.js address them directly. Restyle freely, rename nothing.

   Design language: deep-sea observatory.
   - One accent (gold)  → primary actions & progress only
   - One semantic hue (foam) → discovery / success states only
   - Neutral surfaces, hairline borders, two radii, 4pt spacing grid
   ========================================================================== */

body.explorer-page {
  /* Neutral surfaces */
  --xp-bg: #04141d;
  --xp-surface: #0a2431;
  --xp-surface-raised: #10303f;
  --xp-border: rgba(158, 196, 189, .14);
  --xp-border-strong: rgba(168, 208, 199, .32);
  /* Text */
  --xp-text: #e9f3ef;
  --xp-text-2: #adc6be;
  --xp-text-3: #7b9b93;
  /* Accent — primary action & progress */
  --xp-accent: #dfc08a;
  --xp-accent-strong: #eed5a2;
  --xp-accent-ink: #16262b;
  --xp-accent-border: rgba(223, 192, 138, .45);
  --xp-accent-soft: rgba(223, 192, 138, .08);
  /* Semantic */
  --xp-foam: #8fd0bd;
  --xp-danger: #e5a08d;
  /* Type */
  --xp-serif: "Atlas Serif", "Noto Serif SC", "Songti SC", serif;
  --xp-sans: "Atlas Inter", Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
  --xp-mono: "Atlas Mono", "JetBrains Mono", monospace;
  /* Shape: two radii only */
  --xp-radius: 12px;
  --xp-radius-sm: 6px;
  background: var(--xp-bg);
}

/* --- Canvas ----------------------------------------------------------- */

.explorer-page { background: var(--xp-bg); }

.discovery-ocean {
  position: relative;
  min-height: 100svh;
  overflow: clip;
  color: var(--xp-text);
  font-family: var(--xp-sans);
  background:
    linear-gradient(180deg, rgba(4, 20, 29, .5), rgba(4, 20, 29, .88) 620px, var(--xp-bg) 1080px),
    url('/assets/ocean-reef.webp') center top / auto 1050px no-repeat,
    var(--xp-bg);
}

/* Kept subtle on purpose; explorer.js animates this layer on navigation. */
.discovery-light {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(116deg, transparent 18%, rgba(143, 208, 189, .045) 28%, transparent 44%);
}

.discovery-shell {
  position: relative;
  width: min(1120px, calc(100% - 96px));
  margin: auto;
  padding: 96px 0 96px;
}

.discovery-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  color: var(--xp-text-3);
  font: 600 11px/1.5 var(--xp-sans);
  letter-spacing: .12em;
}
.discovery-topline p { margin: 0; display: flex; align-items: center; gap: 10px; }
.discovery-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--xp-foam); }

/* --- Shared primitives ------------------------------------------------- */

.discovery-kicker {
  margin: 0 0 8px;
  color: var(--xp-text-3);
  font: 600 11px/1.5 var(--xp-sans);
  letter-spacing: .12em;
}

.discovery-section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}
.discovery-section-heading h2 {
  margin: 0;
  font: 400 20px/1.35 var(--xp-serif);
  letter-spacing: .01em;
}

/* Ghost action — tertiary */
.discovery-quiet {
  border: 0;
  background: transparent;
  color: var(--xp-text-2);
  padding: 8px 4px;
  font: 500 13px/1.5 var(--xp-sans);
  cursor: pointer;
  text-underline-offset: 4px;
  border-radius: var(--xp-radius-sm);
}
.discovery-quiet:hover { color: var(--xp-text); text-decoration: underline; }

/* Primary action — the only filled button on the page. */
.discovery-profile {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: 0;
  border-radius: var(--xp-radius-sm);
  background: var(--xp-accent);
  color: var(--xp-accent-ink);
  font: 600 14px/1 var(--xp-sans);
  text-decoration: none;
  cursor: pointer;
  transition: background-color .18s ease;
}
.discovery-profile:hover { background: var(--xp-accent-strong); }
.discovery-profile:active { background: var(--xp-accent); }

.discovery-image-fallback { color: var(--xp-text-3); text-align: center; font-size: 12px; }

/* --- Hero: the fish is the page ---------------------------------------- */

.discovery-hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: 400px;
  padding: 16px 0 56px;
}

.discovery-art {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  height: 400px;
}
/* Grounding light, not a glow effect. */
.discovery-halo {
  position: absolute;
  width: 78%;
  height: 68%;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(143, 208, 189, .08), transparent 68%);
}
.discovery-art > img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 28px 28px rgba(0, 6, 10, .45));
  animation: discovery-drift 9s ease-in-out infinite;
}

.journey-encounter {
  min-height: 1.2em;
  margin: 0 0 8px;
  color: var(--xp-accent);
  font: 600 11px/1.5 var(--xp-sans);
  letter-spacing: .1em;
}
.journey-encounter[data-kind="return"] { color: var(--xp-text-3); }

.discovery-arrival {
  margin: 0 0 16px;
  color: var(--xp-foam);
  font: 500 12px/1.6 var(--xp-sans);
  letter-spacing: .06em;
}

.discovery-copy h1 {
  margin: 0;
  font: 400 clamp(2.25rem, 4vw, 3.25rem)/1.12 var(--xp-serif);
  letter-spacing: -.01em;
  text-wrap: balance;
}

.discovery-scientific {
  margin: 12px 0 0;
  color: var(--xp-text-3);
  font: italic 400 15px/1.5 var(--xp-serif);
}

.discovery-observation {
  margin: 24px 0 32px;
  max-width: 46ch;
  color: var(--xp-text-2);
  font-size: 15px;
  line-height: 1.8;
}

.discovery-art-note { margin: 16px 0 0; color: var(--xp-text-3); font-size: 12px; }

/* --- Resume banner ------------------------------------------------------- */

.discovery-resume {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
  margin: 0 0 24px;
  padding: 14px 20px;
  border: 1px solid var(--xp-border-strong);
  border-radius: var(--xp-radius);
  background: var(--xp-surface);
  font-size: 13px;
  color: var(--xp-text-2);
}
.discovery-resume p { flex: 1; margin: 0; line-height: 1.6; }
#resume-exploration {
  border: 0;
  border-radius: var(--xp-radius-sm);
  background: var(--xp-accent);
  color: var(--xp-accent-ink);
  padding: 10px 16px;
  font: 600 13px/1 var(--xp-sans);
  cursor: pointer;
}
#resume-exploration:hover { background: var(--xp-accent-strong); }

/* --- Journey panel: one slim instrument bar ------------------------------ */

.journey-panel {
  margin: 0;
  padding: 16px 20px 14px;
  border: 1px solid var(--xp-border);
  border-radius: var(--xp-radius);
  background: var(--xp-surface);
}
.journey-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; }
.journey-heading h2 {
  margin: 0;
  color: var(--xp-text);
  font: 400 16px/1.4 var(--xp-serif);
}
.journey-heading .discovery-kicker { margin-bottom: 2px; color: var(--xp-accent); }
#journey-count {
  margin-left: 12px;
  color: var(--xp-text-3);
  font: 500 12px/1 var(--xp-mono);
  white-space: nowrap;
}
.journey-book-link {
  color: var(--xp-text-2);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  padding: 8px 0;
}
.journey-book-link:hover { color: var(--xp-text); text-decoration: underline; text-underline-offset: 4px; }

#journey-meter {
  display: block;
  width: 100%;
  height: 3px;
  margin: 12px 0 10px;
  border: 0;
  border-radius: 2px;
  overflow: hidden;
  background: rgba(158, 196, 189, .16);
  accent-color: var(--xp-accent);
}
#journey-meter::-webkit-progress-bar { background: rgba(158, 196, 189, .16); }
#journey-meter::-webkit-progress-value { background: var(--xp-accent); border-radius: 2px; transition: width .35s; }
#journey-meter::-moz-progress-bar { background: var(--xp-accent); border-radius: 2px; transition: width .35s; }

#journey-instruction { margin: 0; color: var(--xp-text-2); font-size: 13px; line-height: 1.6; }

.journey-save-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 16px;
  margin-top: 8px;
  color: var(--xp-text-3);
  font-size: 12px;
}
.journey-save-row a { color: var(--xp-text-2); text-underline-offset: 3px; }
.journey-save-row .discovery-quiet { padding: 2px 6px; font-size: 12px; }
#journey-sync[data-state="error"],
#journey-sync[data-state="account"],
#journey-sync[data-state="reset"] { color: var(--xp-danger); }

/* --- Next discoveries ----------------------------------------------------- */

.discovery-directions { margin-top: 64px; }

.discovery-choices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.discovery-choice {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 8px 20px 20px;
  border: 1px solid var(--xp-border);
  border-radius: var(--xp-radius);
  background: var(--xp-surface);
  color: var(--xp-text);
  text-decoration: none;
  transition: border-color .18s ease, transform .18s ease, background-color .18s ease;
}
.discovery-choice:hover {
  transform: translateY(-2px);
  border-color: var(--xp-border-strong);
  background: var(--xp-surface-raised);
}

.discovery-choice-art {
  height: 124px;
  display: grid;
  place-items: center;
  margin-bottom: 4px;
}
.discovery-choice img { width: 100%; height: 124px; object-fit: contain; }

.discovery-choice-label {
  display: block;
  margin-bottom: 6px;
  color: var(--xp-foam);
  font: 600 11px/1.5 var(--xp-sans);
  letter-spacing: .08em;
}
.discovery-choice[data-relation-type='discovery'] .discovery-choice-label { color: var(--xp-accent); }
.discovery-choice[data-relation-type='mission'] .discovery-choice-label { color: var(--xp-accent-strong); }
.discovery-choice[data-relation-type='mission'] { border-color: var(--xp-accent-border); }

.discovery-choice strong {
  display: block;
  padding-right: 16px;
  font: 400 17px/1.4 var(--xp-serif);
}
.discovery-choice p {
  margin: 8px 0 0;
  color: var(--xp-text-3);
  font-size: 13px;
  line-height: 1.7;
}

.discovery-choice-arrow {
  position: absolute;
  right: 18px;
  top: 16px;
  color: var(--xp-text-3);
  font-size: 13px;
  transition: color .18s ease, transform .18s ease;
}
.discovery-choice:hover .discovery-choice-arrow { color: var(--xp-text); transform: translate(2px, -2px); }

/* Mystery encounter: silhouette, dashed frame, no extra theatre. */
.discovery-choice.is-mystery {
  border-style: dashed;
  background: transparent;
}
.discovery-choice.is-mystery:hover { background: var(--xp-surface); }
.discovery-choice.is-mystery img { filter: brightness(0) saturate(0); opacity: .55; }
.discovery-choice.is-mystery .discovery-choice-label { color: var(--xp-text-2); }

.discovery-status-row {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 40px;
  color: var(--xp-text-2);
  font-size: 13px;
}
.discovery-status-row p { margin: 8px 0; }

/* --- Discovery book ------------------------------------------------------- */

.journey-album { margin: 64px 0 0; padding-top: 48px; border-top: 1px solid var(--xp-border); }
.journey-album .discovery-section-heading { margin-bottom: 16px; }

.journey-book {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  scroll-margin-top: 120px;
}

.journey-slot {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 0;
  padding: 12px 10px 14px;
  border: 1px dashed rgba(158, 196, 189, .22);
  border-radius: var(--xp-radius);
  color: var(--xp-text-3);
  text-decoration: none;
}
.journey-slot-number {
  align-self: flex-start;
  color: var(--xp-text-3);
  font: 500 10px/1.5 var(--xp-mono);
  letter-spacing: .08em;
}
.journey-slot img { width: 100%; height: 84px; object-fit: contain; filter: brightness(0); opacity: .4; }
.journey-slot > span:last-child { font-size: 12px; line-height: 1.5; text-align: center; }

.journey-slot.is-found {
  border-style: solid;
  border-color: var(--xp-border-strong);
  background: var(--xp-surface);
  color: var(--xp-text);
}
.journey-slot.is-found img { filter: none; opacity: 1; }
.journey-slot.is-found .journey-slot-number { color: var(--xp-accent); }
.journey-slot.is-found:hover { border-color: var(--xp-accent); }
.journey-slot.is-new { animation: journey-discovered .65s ease-out; }

.journey-stamp {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 24px;
  padding: 20px 24px;
  border: 1px solid var(--xp-accent-border);
  border-radius: var(--xp-radius);
  background: var(--xp-accent-soft);
  color: var(--xp-accent-strong);
}
.journey-stamp > span { font: 400 32px/1 var(--xp-serif); }
.journey-stamp strong { font: 600 11px/1.5 var(--xp-sans); letter-spacing: .12em; }
.journey-stamp p { margin: 6px 0 0; color: var(--xp-text-2); font-size: 13px; line-height: 1.7; }

/* --- Trail ----------------------------------------------------------------- */

.discovery-trail {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--xp-border);
}
.discovery-trail .discovery-section-heading h2 { font-size: 16px; }
#discovery-count { margin-left: 8px; color: var(--xp-text-3); font: 500 12px/1 var(--xp-mono); }
.discovery-trail-note { margin: 6px 0 0; color: var(--xp-text-3); font-size: 12px; }

.discovery-trail-items { display: flex; gap: 8px; overflow-x: auto; padding: 4px; }
.discovery-trail-item {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 10px;
  max-width: 220px;
  min-height: 52px;
  padding: 6px 14px 6px 8px;
  border: 1px solid var(--xp-border);
  border-radius: var(--xp-radius-sm);
  background: var(--xp-surface);
  color: var(--xp-text-2);
  text-decoration: none;
  font-size: 13px;
  transition: border-color .18s ease, color .18s ease;
}
.discovery-trail-item:hover { border-color: var(--xp-border-strong); color: var(--xp-text); }
.discovery-trail-item[aria-current] { border-color: var(--xp-accent); color: var(--xp-text); }
.discovery-trail-item img { width: 56px; height: 40px; object-fit: contain; }

/* --- Drawers ---------------------------------------------------------------- */

.discovery-drawer {
  position: fixed;
  inset: 0 0 0 auto;
  box-sizing: border-box;
  margin: 0;
  width: min(480px, 100%);
  max-width: 100%;
  height: 100dvh;
  max-height: 100dvh;
  padding: 0;
  border: 0;
  border-left: 1px solid var(--xp-border-strong);
  background: var(--xp-bg);
  color: var(--xp-text);
  overflow-y: auto;
}
.discovery-drawer::backdrop { background: rgba(2, 12, 18, .72); }

.discovery-close {
  position: sticky;
  top: 12px;
  float: right;
  z-index: 2;
  width: 36px;
  height: 36px;
  margin: 12px;
  border: 1px solid var(--xp-border-strong);
  border-radius: 50%;
  background: var(--xp-bg);
  color: var(--xp-text);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}
.discovery-close:hover { background: var(--xp-surface-raised); }

.discovery-real-photo {
  display: grid;
  place-items: center;
  min-height: 200px;
  clear: both;
  background: var(--xp-surface);
}
.discovery-real-photo img { width: 100%; max-height: 340px; object-fit: contain; }

.discovery-drawer-copy { padding: 24px 32px 40px; }
.discovery-drawer-copy h2 { margin: 8px 0; font: 400 26px/1.25 var(--xp-serif); }
.discovery-drawer-copy p { font-size: 14px; line-height: 1.8; color: var(--xp-text-2); }
.discovery-drawer-copy dl { margin: 24px 0 32px; }
.discovery-drawer-copy dl div {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 0;
  border-bottom: 1px solid var(--xp-border);
  font-size: 13px;
}
.discovery-drawer-copy dt { color: var(--xp-text-3); }
.discovery-drawer-copy dd { margin: 0; text-align: right; color: var(--xp-text); }

.discovery-trail-drawer .discovery-trail-items { flex-direction: column; }
.discovery-trail-drawer .discovery-trail-item { max-width: none; }

/* --- States, motion, responsive ---------------------------------------------- */

.discovery-ocean [hidden], .discovery-drawer [hidden] { display: none !important; }
.discovery-ocean :focus-visible, .discovery-drawer :focus-visible {
  outline: 2px solid var(--xp-accent);
  outline-offset: 3px;
}

@keyframes discovery-drift {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-9px) rotate(1deg); }
}
@keyframes journey-discovered {
  from { box-shadow: 0 0 0 2px rgba(223, 192, 138, .7); transform: translateY(-4px); }
  to { box-shadow: 0 0 0 0 transparent; transform: translateY(0); }
}

@media (max-width: 700px) {
  .discovery-shell { width: calc(100% - 32px); padding: 120px 0 64px; }
  .discovery-topline { display: none; }

  .discovery-hero {
    grid-template-columns: 1fr;
    gap: 8px;
    min-height: 0;
    padding: 8px 0 40px;
  }
  .discovery-art { height: 220px; min-height: 0; }
  .discovery-copy h1 { font-size: 30px; }
  .discovery-scientific { margin: 8px 0 0; font-size: 14px; }
  .discovery-observation { margin: 16px 0 24px; font-size: 14px; }
  .discovery-arrival { font-size: 11px; margin-bottom: 12px; }
  .discovery-art-note { margin-top: 12px; }

  .discovery-directions { margin-top: 48px; }
  .discovery-section-heading { margin-bottom: 16px; }
  .discovery-section-heading h2 { font-size: 18px; }
  .discovery-kicker { font-size: 10px; }

  .discovery-choices { grid-template-columns: 1fr; gap: 12px; }
  .discovery-choice {
    display: grid;
    grid-template-columns: 96px 1fr;
    align-items: center;
    gap: 16px;
    padding: 12px 16px 12px 8px;
  }
  .discovery-choice-art, .discovery-choice img { height: 84px; margin: 0; }
  .discovery-choice strong { font-size: 16px; padding-right: 8px; }
  .discovery-choice p { margin-top: 6px; }
  .discovery-choice-label { margin-bottom: 4px; }
  .discovery-choice-arrow { right: 12px; top: 12px; }

  .journey-panel { padding: 14px 16px 12px; }
  .journey-heading h2 { font-size: 15px; }
  .journey-save-row { line-height: 1.6; }

  .journey-album { margin-top: 48px; padding-top: 32px; }
  .journey-book { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .journey-slot { padding: 10px 8px 12px; }
  .journey-slot img { height: 68px; }
  .journey-stamp { padding: 16px; }

  .discovery-trail { margin-top: 48px; padding-top: 32px; }

  .discovery-resume p { flex-basis: 100%; }

  .discovery-drawer {
    inset: auto 0 0;
    width: 100%;
    height: 88dvh;
    border-left: 0;
    border-top: 1px solid var(--xp-border-strong);
    border-radius: var(--xp-radius) var(--xp-radius) 0 0;
  }
  /* Drag handle for the bottom sheet. */
  .discovery-drawer::before {
    content: "";
    position: sticky;
    top: 0;
    display: block;
    width: 36px;
    height: 4px;
    margin: 10px auto -14px;
    border-radius: 2px;
    background: var(--xp-border-strong);
  }
  .discovery-drawer-copy { padding: 20px 20px calc(32px + env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  .discovery-art > img { animation: none; }
  .discovery-choice, .discovery-choice-arrow, .discovery-profile { transition: none; }
  .journey-slot.is-new { animation: none; }
  #journey-meter::-webkit-progress-value, #journey-meter::-moz-progress-bar { transition: none; }
}