/* ==========================================================================
   THE VESSELS — a separate experience from the Rihla platform.
   Deep-ocean science fiction: abyssal blues, instrument cyan, ember orange.
   Deliberately NOT the Islamic-architecture theme; the two are kept apart
   until a decision is made about merging them.
   No depiction of any living being anywhere — story is told in writing.
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;600;700&family=Amiri:wght@400;700&display=swap');

:root {
  --abyss:      #04080f;
  --deep:       #071322;
  --hull:       #0e1f33;
  --panel:      rgba(14, 31, 51, 0.78);
  --line:       rgba(86, 190, 214, 0.22);
  --cyan:       #56bed6;
  --cyan-bright:#8fe4f5;
  --ember:      #ff8a3d;
  --ember-soft: #ffb877;
  --text:       #dfeaf2;
  --muted:      #7d93a6;
  --font-head:  'Space Grotesk', sans-serif;
  --font-body:  'Inter', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--abyss);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

/* deep-water light shafts + drifting particles */
body::before {
  content: ''; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(86,190,214,0.16), transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 110%, rgba(255,138,61,0.07), transparent 60%),
    linear-gradient(180deg, var(--deep) 0%, var(--abyss) 60%);
}
body::after {
  content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: .5;
  background-image:
    radial-gradient(1.5px 1.5px at 15% 20%, rgba(143,228,245,.7), transparent),
    radial-gradient(1px 1px at 70% 35%, rgba(143,228,245,.5), transparent),
    radial-gradient(1.5px 1.5px at 40% 70%, rgba(143,228,245,.6), transparent),
    radial-gradient(1px 1px at 85% 60%, rgba(143,228,245,.4), transparent),
    radial-gradient(1.5px 1.5px at 25% 88%, rgba(143,228,245,.5), transparent);
  background-repeat: no-repeat;
  animation: drift 18s ease-in-out infinite alternate;
}
@keyframes drift { from { transform: translateY(0); opacity:.3 } to { transform: translateY(-22px); opacity:.65 } }

.hidden { display: none !important; }

.v-screen { min-height: 100vh; padding: 1.2rem; max-width: 760px; margin: 0 auto; animation: rise .5s ease-out; }
.v-center { display: grid; place-items: center; text-align: center; }
@keyframes rise { from { opacity:0; transform: translateY(14px) } to { opacity:1; transform:none } }

/* ---------- buttons ---------- */
.v-btn {
  font-family: var(--font-head); font-weight: 600; font-size: .95rem;
  padding: .8rem 1.6rem; border-radius: 4px; border: 1px solid transparent;
  cursor: pointer; letter-spacing: .04em; transition: all .18s;
}
.v-btn-primary {
  background: linear-gradient(180deg, var(--ember-soft), var(--ember));
  color: #2a1206; box-shadow: 0 0 22px rgba(255,138,61,.32);
}
.v-btn-primary:hover { filter: brightness(1.08); box-shadow: 0 0 30px rgba(255,138,61,.5); }
.v-btn-ghost {
  background: rgba(86,190,214,.07); border-color: var(--line); color: var(--cyan-bright);
}
.v-btn-ghost:hover { background: rgba(86,190,214,.16); }

/* ---------- title ---------- */
.title-inner { position: relative; z-index: 2; }
.title-kicker { font-family: var(--font-head); font-size: .68rem; letter-spacing: .42em; color: var(--muted); }
.title-main {
  font-family: var(--font-head); font-weight: 700; font-size: clamp(3rem, 15vw, 6rem);
  line-height: .92; letter-spacing: .06em; margin: 1rem 0;
  background: linear-gradient(180deg, #fff 10%, var(--cyan) 60%, #2b6f85 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  text-shadow: 0 0 60px rgba(86,190,214,.28);
}
.title-sub { color: var(--muted); font-size: .95rem; line-height: 2; margin-bottom: 2.2rem; }
.title-sub em { color: var(--cyan); font-style: normal; }
.title-deep {
  position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 50% 45%, rgba(86,190,214,.10), transparent 55%);
  animation: pulse 6s ease-in-out infinite alternate;
}
@keyframes pulse { from { opacity:.5 } to { opacity:1 } }
#continue-btn { display: block; margin: .9rem auto 0; }

/* ---------- story ---------- */
.story-frame {
  background: var(--panel); border: 1px solid var(--line); border-radius: 6px;
  padding: 1.6rem 1.4rem; backdrop-filter: blur(8px); margin-top: 2rem;
}
.story-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: .8rem; }
.story-chapter { font-family: var(--font-head); font-size: .68rem; letter-spacing: .3em; color: var(--cyan); text-transform: uppercase; }
.story-skip { background: none; border: none; color: var(--muted); font-size: .78rem; cursor: pointer; letter-spacing: .05em; }
.story-skip:hover { color: var(--cyan); }
.story-title {
  font-family: var(--font-head); font-size: 1.7rem; font-weight: 700;
  margin-bottom: 1.1rem; color: #fff; letter-spacing: .01em;
}
.story-body p { margin-bottom: 1rem; font-size: 1rem; color: var(--text); }
.story-body p.lead { font-size: 1.1rem; color: #fff; }

.story-quote {
  margin: 1.4rem 0; padding: 1.2rem 1.3rem; border-left: 2px solid var(--ember);
  background: rgba(255,138,61,.07); font-style: italic; color: var(--ember-soft); font-size: 1.02rem;
}
.story-highlight {
  margin: 1.4rem 0; padding: 1.2rem; border: 1px solid rgba(255,138,61,.35);
  border-radius: 6px; background: rgba(255,138,61,.06);
}
.story-highlight h4 { font-family: var(--font-head); color: var(--ember); margin-bottom: .5rem; letter-spacing: .06em; text-transform: uppercase; font-size: .8rem; }
.story-list { margin: 1.2rem 0; padding: 1.1rem 1.2rem; border: 1px solid var(--line); border-radius: 6px; background: rgba(86,190,214,.05); }
.story-list h4 { font-family: var(--font-head); color: var(--cyan); font-size: .78rem; letter-spacing: .18em; text-transform: uppercase; margin-bottom: .6rem; }
.story-list ul { list-style: none; display: flex; flex-wrap: wrap; gap: .5rem; }
.story-list li { padding: .28rem .8rem; border: 1px solid var(--line); border-radius: 999px; font-size: .84rem; color: var(--cyan-bright); }

.vessel-pair { display: grid; gap: .9rem; margin: 1.3rem 0; }
.vessel-card { padding: 1.2rem; border: 1px solid var(--line); border-radius: 6px; background: rgba(86,190,214,.05); }
.vessel-card.inner { border-color: rgba(255,138,61,.4); background: rgba(255,138,61,.06); }
.vessel-card h4 { font-family: var(--font-head); font-size: 1.05rem; color: var(--cyan); margin-bottom: .1rem; }
.vessel-card.inner h4 { color: var(--ember); }
.vessel-card .vsub { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: .6rem; }
.story-closing { text-align: center; font-family: var(--font-head); color: var(--cyan-bright); font-size: 1.05rem; margin-top: 1.4rem; line-height: 1.9; }

.story-nav { display: flex; align-items: center; justify-content: space-between; gap: .8rem; margin-top: 1.8rem; }
.story-dots { display: flex; gap: .4rem; }
.story-dots span { width: 7px; height: 7px; border-radius: 50%; background: rgba(86,190,214,.22); transition: all .25s; }
.story-dots span.on { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

/* ---------- deck ---------- */
.deck-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: .8rem 0 1rem; border-bottom: 1px solid var(--line); margin-bottom: 1rem;
}
.deck-id { display: flex; align-items: center; gap: .7rem; }
.deck-vessel { font-size: 1.5rem; color: var(--cyan); }
.deck-name { font-family: var(--font-head); font-weight: 600; font-size: .98rem; }
.deck-stage { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.deck-flame {
  display: flex; align-items: center; gap: .4rem; cursor: pointer;
  background: rgba(255,138,61,.1); border: 1px solid rgba(255,138,61,.35);
  border-radius: 999px; padding: .35rem .9rem; color: var(--ember-soft);
  font-family: var(--font-head); font-weight: 600;
}
.flame-icon { font-size: 1.05rem; animation: flicker 2.6s ease-in-out infinite alternate; }
@keyframes flicker { from { opacity:.75; transform: scale(.96) } to { opacity:1; transform: scale(1.06) } }

.flame-bar-wrap { margin-bottom: 1.4rem; }
.flame-bar { height: 6px; background: rgba(86,190,214,.12); border-radius: 999px; overflow: hidden; }
.flame-fill {
  height: 100%; width: 10%; border-radius: 999px;
  background: linear-gradient(90deg, var(--ember), var(--ember-soft));
  box-shadow: 0 0 14px rgba(255,138,61,.6); transition: width .7s cubic-bezier(.2,1,.3,1);
}
.flame-caption { font-size: .74rem; color: var(--muted); margin-top: .45rem; }

.deck-card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 1.2rem; margin-bottom: 1.4rem; }
.deck-hero h3 { font-family: var(--font-head); color: var(--cyan); margin-bottom: .5rem; }
.deck-hero p { font-size: .93rem; color: var(--muted); }
.deck-heading { font-family: var(--font-head); font-size: 1.05rem; margin-bottom: .2rem; }
.deck-note { font-size: .84rem; color: var(--muted); margin-bottom: 1rem; }

.mission-grid { display: grid; gap: .7rem; padding-bottom: 3rem; }
.mission-tile {
  display: flex; align-items: center; gap: .9rem; text-align: left;
  padding: 1rem 1.1rem; border-radius: 6px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); color: var(--text);
  transition: all .16s; font-family: var(--font-body);
}
.mission-tile:hover { border-color: var(--cyan); transform: translateX(3px); }
.mission-tile .mt-icon { font-size: 1.5rem; }
.mission-tile .mt-name { font-family: var(--font-head); font-weight: 600; font-size: .95rem; }
.mission-tile .mt-sub { font-size: .78rem; color: var(--muted); }
.mission-tile .mt-count { margin-left: auto; font-size: .72rem; color: var(--cyan); white-space: nowrap; }

/* ---------- mission screen ---------- */
.mission-card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 1.5rem 1.3rem; margin-top: 2rem; }
.mc-back { background: none; border: none; color: var(--muted); cursor: pointer; font-size: .82rem; margin-bottom: .8rem; }
.mc-back:hover { color: var(--cyan); }
.mc-title { font-family: var(--font-head); font-size: 1.3rem; color: var(--cyan); margin-bottom: .3rem; }
.mc-intro { font-size: .88rem; color: var(--muted); font-style: italic; margin-bottom: 1.3rem; }
.mc-q { font-size: 1.05rem; margin-bottom: 1.1rem; line-height: 1.6; }
.mc-actions { display: flex; gap: .7rem; flex-wrap: wrap; }
.mc-reflect { width: 100%; min-height: 110px; padding: .9rem; border-radius: 6px; background: rgba(4,8,15,.6); border: 1px solid var(--line); color: var(--text); font-family: var(--font-body); font-size: .95rem; resize: vertical; }
.mc-reflect:focus { outline: none; border-color: var(--cyan); }
.mc-progress { font-size: .74rem; color: var(--muted); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 1rem; }
.mc-done { text-align: center; padding: 1.5rem 0; }
.mc-done .big { font-size: 2.4rem; }

/* ---------- modal + toast ---------- */
.v-modal { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; background: rgba(2,5,10,.85); backdrop-filter: blur(6px); padding: 1rem; }
.v-modal-card { background: var(--hull); border: 1px solid var(--line); border-radius: 8px; padding: 2rem 1.6rem; max-width: 420px; text-align: center; animation: rise .35s ease-out; }
.v-modal-icon { font-size: 3rem; }
.v-modal-title { font-family: var(--font-head); font-size: 1.3rem; color: var(--cyan); margin: .6rem 0 .8rem; }
.v-modal-body { color: var(--text); font-size: .93rem; margin-bottom: 1.4rem; }
.toast-container { position: fixed; top: 1.2rem; right: 1.2rem; z-index: 100; display: flex; flex-direction: column; gap: .5rem; }
.toast { background: rgba(14,31,51,.96); border: 1px solid var(--cyan); border-radius: 4px; padding: .7rem 1.1rem; font-size: .86rem; animation: rise .3s ease-out; }

@media (min-width: 640px) { .vessel-pair { grid-template-columns: 1fr 1fr; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* ==========================================================================
   Journey nodes — story / event / lesson woven into one path
   ========================================================================== */
.node-top { display:flex; align-items:center; justify-content:space-between; margin-bottom:1rem; padding-bottom:.7rem; border-bottom:1px solid var(--line); }
.node-chapter { font-family:var(--font-head); font-size:.7rem; letter-spacing:.24em; text-transform:uppercase; color:var(--muted); }
.node-flame { background:rgba(255,138,61,.1); border:1px solid rgba(255,138,61,.35); color:var(--ember-soft); border-radius:999px; padding:.25rem .8rem; font-family:var(--font-head); font-weight:600; font-size:.85rem; cursor:pointer; }
.node-kind { font-family:var(--font-head); font-size:.7rem; letter-spacing:.24em; text-transform:uppercase; color:var(--cyan); margin-bottom:.4rem; }
.node-title { font-family:var(--font-head); font-size:1.5rem; font-weight:700; color:#fff; margin-bottom:1rem; }
.btn-wide { width:100%; margin-top:1.4rem; }
.v-btn.sm { padding:.35rem .8rem; font-size:.78rem; margin-top:.5rem; }

/* event */
.is-event { border-color:rgba(255,138,61,.3); }
.event-situation p { margin-bottom:.9rem; font-size:1rem; }
.event-prompt { font-family:var(--font-head); color:var(--ember-soft); font-size:1.02rem; margin:1.2rem 0 1rem; }
.event-choices { display:grid; gap:.6rem; }
.event-choice {
  text-align:left; padding:1rem 1.1rem; border-radius:6px; cursor:pointer;
  background:rgba(86,190,214,.05); border:1px solid var(--line); color:var(--text);
  font-family:var(--font-body); font-size:.95rem; line-height:1.5; transition:all .15s;
}
.event-choice:hover { border-color:var(--ember); background:rgba(255,138,61,.08); transform:translateX(3px); }
.event-chosen { font-size:.85rem; color:var(--muted); margin-bottom:1rem; }
.event-chosen em { color:var(--cyan-bright); font-style:normal; }
.event-outcome p { margin-bottom:.9rem; }
.flame-delta { display:inline-block; padding:.35rem .9rem; border-radius:999px; font-family:var(--font-head); font-weight:600; font-size:.88rem; margin:.6rem 0; }
.flame-delta.up { background:rgba(255,138,61,.14); border:1px solid rgba(255,138,61,.4); color:var(--ember-soft); }
.flame-delta.down { background:rgba(120,140,160,.12); border:1px solid rgba(120,140,160,.35); color:var(--muted); }
.event-reflect { margin-top:1rem; padding:1rem; border-left:2px solid var(--cyan); background:rgba(86,190,214,.06); font-style:italic; color:var(--cyan-bright); font-size:.93rem; }

/* lesson */
.is-lesson { border-color:rgba(86,190,214,.35); }
.lesson-intro p { margin-bottom:.9rem; font-size:1.02rem; }
.cp-progress { display:flex; align-items:center; justify-content:space-between; gap:.6rem; font-size:.76rem; color:var(--muted); padding:.5rem .8rem; border:1px solid var(--line); border-radius:6px; margin-bottom:.9rem; }
.cp-dots { display:flex; gap:.3rem; }
.cp-dots i { width:9px; height:9px; border-radius:50%; background:rgba(86,190,214,.2); transition:all .3s; }
.cp-dots i.on { background:var(--ember); box-shadow:0 0 8px var(--ember); }
.cp-msgs { display:flex; flex-direction:column; gap:.7rem; max-height:48vh; overflow-y:auto; margin-bottom:.9rem; }
.cp-msg { display:flex; gap:.6rem; align-items:flex-start; animation:rise .25s ease-out; }
.cp-who { flex:0 0 auto; width:22px; height:22px; border-radius:50%; display:grid; place-items:center; font-size:.7rem; margin-top:.2rem; }
.cp-msg.ai .cp-who { background:rgba(86,190,214,.18); color:var(--cyan); }
.cp-msg.me .cp-who { background:rgba(255,138,61,.18); color:var(--ember); }
.cp-msg > span:last-child { padding:.65rem .9rem; border-radius:6px; font-size:.93rem; line-height:1.6; background:rgba(86,190,214,.06); border:1px solid var(--line); }
.cp-msg.me > span:last-child { background:rgba(255,138,61,.07); border-color:rgba(255,138,61,.25); }
.cp-msg.typing > span:last-child { opacity:.5; letter-spacing:.3em; }
.cp-msg.err > span:last-child { border-color:var(--ember); color:var(--ember-soft); }
.cp-input { display:flex; gap:.5rem; align-items:flex-end; }
.cp-text { flex:1; padding:.7rem .9rem; border-radius:6px; background:rgba(4,8,15,.6); border:1px solid var(--line); color:var(--text); font-family:var(--font-body); font-size:.94rem; resize:vertical; }
.cp-text:focus { outline:none; border-color:var(--cyan); }
.cp-win { text-align:center; padding:1.2rem; border-radius:6px; background:rgba(255,138,61,.09); border:1px solid rgba(255,138,61,.4); }
.cp-win strong { color:var(--ember-soft); font-family:var(--font-head); }
.cp-win p { font-size:.86rem; color:var(--muted); margin:.4rem 0 .9rem; }
.cp-skip { text-align:center; padding:.9rem; font-size:.85rem; color:var(--muted); border-top:1px dashed var(--line); margin-top:.5rem; }
.cp-skip .v-btn { display:block; margin:.7rem auto 0; }

/* consolidation */
.cons-intro { color:var(--muted); font-style:italic; text-align:center; margin-bottom:1.2rem; font-size:.92rem; }
.cons-section { padding:1rem 1.1rem; margin-bottom:.7rem; border-radius:6px; background:rgba(86,190,214,.05); border:1px solid var(--line); border-left:2px solid var(--cyan); }
.cons-section h4 { font-family:var(--font-head); color:var(--cyan); font-size:.98rem; margin-bottom:.35rem; }
.cons-section p { font-size:.93rem; margin-bottom:.5rem; }
.cons-closing { margin-top:1rem; padding:1.1rem; border-radius:6px; text-align:center; background:rgba(255,138,61,.07); border:1px solid rgba(255,138,61,.3); font-size:.95rem; }
.cons-full { margin-top:1rem; padding-top:1rem; border-top:1px dashed var(--line); }
.verse-card { text-align:center; padding:1rem; margin:.7rem 0; border-radius:6px; background:rgba(4,8,15,.5); border:1px solid var(--line); }
.verse-surah { font-size:.75rem; color:var(--ember-soft); letter-spacing:.08em; }
.arabic { font-family:'Amiri',serif; font-size:1.6rem; line-height:2.3; margin:.5rem 0; color:#fff; }
.verse-tr { font-size:.88rem; color:var(--muted); font-style:italic; }

/* ==========================================================================
   Cold open — the cinematic before the title
   ========================================================================== */
#v-open { background: #02040a; }
.open-beat {
  font-family: var(--font-head); font-size: clamp(1.15rem, 4.4vw, 1.9rem);
  line-height: 1.6; color: var(--text); max-width: 22ch; text-align: center;
  animation: beatIn 900ms ease-out both;
}
.open-beat.stark { color: #fff; font-weight: 700; letter-spacing: .02em; }
.open-beat.ember { color: var(--ember-soft); }
@keyframes beatIn {
  0%   { opacity: 0; transform: translateY(10px); filter: blur(6px); }
  100% { opacity: 1; transform: none; filter: none; }
}
.open-skip {
  position: fixed; bottom: 1.4rem; right: 1.4rem;
  background: none; border: 1px solid var(--line); color: var(--muted);
  border-radius: 4px; padding: .45rem 1rem; font-size: .8rem; cursor: pointer;
  letter-spacing: .1em; font-family: var(--font-head);
}
.open-skip:hover { color: var(--cyan); border-color: var(--cyan); }

/* sound toggle */
.sound-btn {
  position: fixed; top: 1rem; right: 1rem; z-index: 95;
  background: rgba(14,31,51,.85); border: 1px solid var(--line); color: var(--cyan);
  border-radius: 999px; padding: .35rem .9rem; cursor: pointer;
  font-family: var(--font-head); font-size: .66rem; letter-spacing: .18em;
  backdrop-filter: blur(6px);
}
.sound-btn.muted { color: var(--muted); opacity: .65; }
.sound-btn:hover { border-color: var(--cyan); }

/* narration */
.narrate-btn {
  background: rgba(86,190,214,.08); border: 1px solid var(--line); color: var(--cyan-bright);
  border-radius: 999px; padding: .35rem 1rem; font-size: .8rem; cursor: pointer;
  font-family: var(--font-head); margin-bottom: 1rem;
}
.narrate-btn:hover { background: rgba(86,190,214,.18); }

/* ==========================================================================
   Archipelago + island screens
   ========================================================================== */
.map-top { display:flex; align-items:flex-start; justify-content:space-between; gap:1rem; padding:1.2rem 0 1rem; border-bottom:1px solid var(--line); margin-bottom:1.2rem; }
.map-heading { font-family:var(--font-head); font-size:1.5rem; font-weight:700; color:#fff; }
.map-sub { font-size:.85rem; color:var(--muted); }

.island-grid { display:grid; gap:1rem; padding-bottom:3rem; }
.island-card {
  display:flex; gap:1rem; align-items:center; text-align:left; padding:.9rem;
  background:var(--panel); border:1px solid var(--line); border-radius:8px;
  cursor:pointer; color:var(--text); transition:all .18s; font-family:var(--font-body);
}
.island-card:hover:not(.locked) { border-color:var(--cyan); transform:translateY(-2px); }
.island-card.locked { opacity:.45; cursor:not-allowed; filter:grayscale(.5); }
.island-thumb { flex:0 0 auto; width:92px; height:92px; border-radius:6px; overflow:hidden; background:rgba(4,8,15,.6); }
.island-thumb img { width:100%; height:100%; object-fit:cover; }
.island-card-name { font-family:var(--font-head); font-weight:600; font-size:1.05rem; color:#fff; }
.island-card-sub { font-size:.85rem; color:var(--muted); margin-bottom:.35rem; }
.island-card-state { font-size:.75rem; color:var(--cyan); letter-spacing:.06em; }

.island-top { display:flex; align-items:center; justify-content:space-between; gap:.8rem; padding:.9rem 0; }
.island-titles { text-align:center; flex:1; }
.island-name { font-family:var(--font-head); font-weight:600; font-size:1rem; color:#fff; }
.island-sub { font-size:.75rem; color:var(--muted); }

.island-stage { position:relative; width:100%; max-width:620px; margin:0 auto; aspect-ratio:1/1; }
.island-art { width:100%; height:100%; object-fit:contain; display:block; border-radius:10px; }
.island-art.missing { background:radial-gradient(circle at 50% 45%, #2c6b58, #0b2233 70%); }
.island-nodes { position:absolute; inset:0; }

.isl-node {
  position:absolute; transform:translate(-50%,-50%);
  display:flex; flex-direction:column; align-items:center; gap:.25rem;
  background:none; border:none; cursor:pointer; padding:0;
}
.isl-node .nd-mark {
  display:grid; place-items:center; border-radius:50%;
  font-family:var(--font-head); font-weight:700; color:#04121c;
  background:linear-gradient(180deg,var(--cyan-bright),var(--cyan));
  border:2px solid rgba(255,255,255,.55);
  box-shadow:0 4px 14px rgba(0,0,0,.55);
  transition:transform .15s;
}
.isl-node.nd-big .nd-mark { width:46px; height:46px; font-size:1rem; }
.isl-node.nd-small .nd-mark {
  width:28px; height:28px; font-size:.7rem;
  background:linear-gradient(180deg,var(--ember-soft),var(--ember)); color:#2a1206;
}
.isl-node:hover:not(:disabled) .nd-mark { transform:scale(1.12); }
.isl-node.current .nd-mark { animation:ndPulse 1.8s infinite; }
@keyframes ndPulse {
  0%   { box-shadow:0 0 0 0 rgba(143,228,245,.65), 0 4px 14px rgba(0,0,0,.55); }
  70%  { box-shadow:0 0 0 14px rgba(143,228,245,0), 0 4px 14px rgba(0,0,0,.55); }
  100% { box-shadow:0 0 0 0 rgba(143,228,245,0), 0 4px 14px rgba(0,0,0,.55); }
}
.isl-node.done .nd-mark { background:linear-gradient(180deg,#9ad9b8,#3f9e78); color:#06231a; }
.isl-node.locked .nd-mark { background:rgba(120,140,160,.5); color:rgba(255,255,255,.6); border-color:rgba(255,255,255,.2); }
.isl-node:disabled { cursor:not-allowed; }
.nd-label {
  font-size:.62rem; letter-spacing:.06em; color:#eaf6ff; white-space:nowrap;
  background:rgba(4,10,20,.72); padding:.1rem .45rem; border-radius:999px;
  border:1px solid rgba(143,228,245,.28);
}
.isl-node.nd-small .nd-label { font-size:.55rem; opacity:.8; }
.island-hint { text-align:center; font-size:.78rem; color:var(--muted); margin:1rem auto 3rem; max-width:44ch; }

.mc-back { background:none; border:none; color:var(--muted); cursor:pointer; font-size:.82rem; font-family:var(--font-body); }
.mc-back:hover { color:var(--cyan); }
.mc-intro { font-size:.86rem; color:var(--muted); font-style:italic; margin-bottom:1rem; }
.mc-q { font-size:1.05rem; line-height:1.6; margin-bottom:1.1rem; }
.mc-actions { display:flex; gap:.7rem; flex-wrap:wrap; }
.is-task { border-color:rgba(255,138,61,.3); }

@media (min-width:640px) { .island-grid { grid-template-columns:1fr 1fr; } }

/* ---------- narration bar (auto-plays; this only steers it) ---------- */
.narr-bar {
  display: flex; align-items: center; gap: .7rem;
  margin: 0 0 1.2rem; padding: .5rem .7rem;
  background: rgba(4,10,20,.5); border: 1px solid var(--line); border-radius: 999px;
}
.narr-play, .narr-speed {
  background: rgba(86,190,214,.1); border: 1px solid var(--line); color: var(--cyan-bright);
  border-radius: 999px; padding: .3rem .85rem; cursor: pointer;
  font-family: var(--font-head); font-size: .72rem; letter-spacing: .06em; white-space: nowrap;
}
.narr-play:hover, .narr-speed:hover { background: rgba(86,190,214,.22); }
.narr-speed { min-width: 3.4rem; text-align: center; }
.narr-track { flex: 1; height: 3px; background: rgba(86,190,214,.16); border-radius: 999px; overflow: hidden; }
.narr-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--cyan), var(--cyan-bright)); transition: width .25s linear; }

.island-error {
  padding: 1.4rem; border: 1px solid var(--ember); border-radius: 8px;
  background: rgba(255,138,61,.08); color: var(--ember-soft);
  font-size: .9rem; line-height: 1.7; text-align: center;
}
.island-error code { display: inline-block; margin: .5rem 0; font-size: .8rem; opacity: .85; }
.island-error .v-btn { margin-top: .8rem; }

/* ---------- chapter illustration ---------- */
.story-figure { position: relative; margin: 0 0 1.3rem; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); background: rgba(4,10,20,.5); }
.story-figure img { display: block; width: 100%; height: auto; }

/* Chapter video. The still sits on the figure as a background layer and the clip
   plays on top of it, so fading the video out at its loop point reveals the exact
   frame the next pass begins on — the repeat reads as a breath, not a cut.
   JS drives the opacity, so no transition here to fight it. */
.story-figure { background-repeat: no-repeat; }
.story-figure video { display: block; width: 100%; height: auto; will-change: opacity; }

/* video sound toggle overlay button — hidden per design instruction */
.video-sound-toggle { display: none !important; }