/* ============================================================
   Layout — the observatory shell.

   A drifting field behind everything; a hairline spine at the
   edge that carries position and doubles as navigation; four
   worlds that swap in place behind a colour wipe.
   ============================================================ */

/* — the field ——————————————————————————————————————————— */
#field {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 1.6s var(--ease);
}
#field.is-lit { opacity: 1; }

.field-wash {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(60vw 50vh at 12% 8%,  color-mix(in oklab, var(--world) 13%, transparent), transparent 68%),
    radial-gradient(55vw 46vh at 88% 82%, color-mix(in oklab, var(--accent-soft) 16%, transparent), transparent 66%);
  transition: background 1.2s var(--ease);
}

/* — shell ——————————————————————————————————————————————— */
.shell { position: relative; z-index: 1; min-height: 100dvh; }

.wrap {
  width: min(100% - calc(var(--gut) * 2), var(--shell));
  margin-inline: auto;
}

/* — spine : the hairline rail that IS the navigation ————— */
.spine {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  width: var(--spine);
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  pointer-events: none;
}
.spine::before {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: calc(var(--spine) / 2);
  width: 1px;
  background: linear-gradient(to bottom, transparent,
    var(--silver-faint) 12%, var(--silver-faint) 88%, transparent);
}

.spine-tick {
  position: relative;
  pointer-events: auto;
  width: 26px; height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
}
.spine-tick i {
  display: block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--silver);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.spine-tick:hover i { transform: scale(1.9); background: var(--ink-faint); }
.spine-tick[aria-current="true"] i {
  background: var(--world);
  transform: scale(2.1);
  box-shadow: 0 0 0 5px color-mix(in oklab, var(--world) 16%, transparent);
}
.spine-tick .tip {
  position: absolute;
  inset-inline-start: 130%;
  white-space: nowrap;
  font-family: var(--font-sans);
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
  pointer-events: none;
}
[dir="rtl"] .spine-tick .tip { transform: translateX(6px); }
.spine-tick:hover .tip,
.spine-tick:focus-visible .tip { opacity: 1; transform: translateX(0); }

/* — top bar : brand, language, theme ————————————————————— */
.topbar {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 45;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px clamp(18px, 4vw, 40px);
  padding-inline-start: calc(var(--spine) + 8px);
  background: linear-gradient(to bottom, var(--ground-veil), transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: -0.01em;
}
.brand .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--world);
  align-self: center;
  transition: background var(--dur) var(--ease);
}
.brand small {
  font-family: var(--font-sans);
  font-size: var(--t-label);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
@media (max-width: 640px) { .brand small { display: none; } }

.topbar-tools { display: flex; align-items: center; gap: 8px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--silver-faint);
  border-radius: 999px;
  background: color-mix(in oklab, var(--ground-raise) 70%, transparent);
  font-family: var(--font-sans);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.chip:hover { border-color: var(--world); color: var(--ink); }

/* The language switch names its destination, so it holds a word
   rather than a two-letter code. */
.lang-btn {
  height: 36px;
  padding: 0 15px;
  gap: 8px;
  font-size: 0.83rem;
  font-weight: 500;
  letter-spacing: normal;
  text-transform: none;
  color: var(--ink);
  border-color: color-mix(in oklab, var(--world) 42%, var(--silver-faint));
  background: color-mix(in oklab, var(--world) 7%, var(--ground-raise));
}
.lang-btn:hover { border-color: var(--world); background: var(--world); color: var(--accent-ink); }
.lang-btn .globe { color: var(--world); font-size: 0.72rem; transition: color var(--dur-fast) var(--ease); }
.lang-btn:hover .globe { color: var(--accent-ink); }

/* — worlds swap in place ————————————————————————————————— */
.world { display: none; padding-inline-start: var(--spine); }
.world.is-open { display: block; }

.world-head { padding-block: clamp(76px, 11vh, 140px) clamp(32px, 5vh, 58px); }
.world-head .label { display: block; margin-bottom: 22px; }
.world-head h2 { font-size: var(--t-d1); margin-bottom: 26px; }

section.band { padding-block: clamp(52px, 9vh, 108px); }
section.band + section.band { border-top: 1px solid var(--silver-faint); }

.band-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  margin-bottom: clamp(28px, 4vh, 52px);
  flex-wrap: wrap;
}
.band-head h3 { font-size: var(--t-d2); }
.band-head .label { padding-block: 6px; }

/* ============================================================
   HUB — the landing

   A stage and four pillars. The greeting rests on a cream stage
   that stops short of the fold; below it the ground turns
   lavender and the four pillars float on it as pills, set in a
   slow wave rather than a grid, so the landing reads as a place
   rather than a menu.
   ============================================================ */
.hub.is-open {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100dvh;
  padding-block: 0 clamp(48px, 8vh, 92px);
  padding-inline-start: var(--spine);
  position: relative;
  isolation: isolate;
  text-align: center;
}

/* the lavender ground the pillars float on */
.hub::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: 0.94;
  background:
    radial-gradient(90vw 62vh at 50% 116%,
      color-mix(in oklab, var(--accent) 20%, transparent), transparent 72%),
    linear-gradient(180deg,
      color-mix(in oklab, var(--accent) 6%, var(--ground-deep)),
      color-mix(in oklab, var(--accent) 12%, var(--ground-deep)));
}

/* — the stage : the cream panel that carries the greeting ——— */
.hub-stage {
  position: relative;
  padding-block: clamp(74px, 11vh, 124px) clamp(34px, 5.5vh, 62px);
  background: color-mix(in oklab, var(--ground) 90%, transparent);
  border-end-start-radius: clamp(18px, 2.6vw, 38px);
  border-end-end-radius: clamp(18px, 2.6vw, 38px);
  box-shadow: 0 30px 70px -56px rgba(23, 21, 28, 0.5);
}

.hub-intro { margin-inline: auto; }
.hub-ground { margin-inline: auto; }

.hub-topline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: clamp(16px, 2.6vh, 28px);
}
.lang-invite {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border: 1px solid color-mix(in oklab, var(--world) 38%, var(--silver-faint));
  border-radius: 999px;
  background: color-mix(in oklab, var(--world) 6%, transparent);
  font-family: var(--font-sans);
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--world);
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease);
}
.lang-invite:hover { background: var(--world); color: var(--accent-ink); transform: translateY(-1px); }

.hub-hello {
  font-size: var(--t-hero);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin-bottom: clamp(18px, 3vh, 32px);
}
.hub-hello .name { font-weight: 700; font-style: italic; color: var(--accent); }

/* The headline is typed, not faded in. The caret is a real block
   that blinks while typing and retires once the line is finished. */
.hub-hello .t1,
.hub-hello .t2 { white-space: pre-wrap; }

.hub-hello .caret,
.hub-line .caret {
  display: inline-block;
  width: 0.055em;
  height: 0.78em;
  background: var(--accent);
  margin-inline-start: 0.05em;
  vertical-align: -0.04em;
  animation: caretBlink 1.05s steps(1) infinite;
}
@keyframes caretBlink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }
/* at body size the headline's hairline caret would fall under a
   pixel, so the lead's takes a fixed width instead of an em one */
.hub-line .caret {
  width: 2px;
  height: 1.02em;
  vertical-align: -0.18em;
  margin-inline-start: 0.12em;
}
.hub-hello .caret.done,
.hub-line .caret.done {
  animation: none;
  opacity: 0;
  transition: opacity 700ms var(--ease);
}
@media (prefers-reduced-motion: reduce) {
  .hub-hello .caret,
  .hub-line .caret { animation: none; opacity: 0; }
}

/* The lead is typed too. The twin carries the full text with
   visibility hidden, so the paragraph stands at its final height
   from the first frame; the typed copy lies over it, and the
   pills below never move while the line fills in. Both wrap
   identically because a growing prefix breaks lines the same way
   the whole string does. */
.hub-line {
  position: relative;
  max-width: 58ch;
  margin-inline: auto;
  text-align: center;
}
.hub-line .line-ghost { visibility: hidden; }
.hub-line .line-typed {
  position: absolute;
  inset: 0;
}

/* — the four pillars ————————————————————————————————————————
   One pill per pillar. They sit on a single line and alternate
   up and down: a wave, not a row of four equal boxes. The note
   hangs under the pill on hover, so nothing on the page moves
   when it appears.
   ============================================================ */
.orbs {
  --wave: clamp(40px, 6.6vh, 94px);
  --tuck: clamp(4px, 2.3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  padding-block: clamp(30px, 5vh, 62px) clamp(56px, 8vh, 96px);
}

/* the slot carries the reveal and the wave; the pill inside it
   carries the pointer gravity, so the two transforms never fight */
.orb-slot { position: relative; display: block; }
.orb-slot + .orb-slot { margin-inline-start: calc(var(--tuck) * -1); }
.orb-slot:nth-child(odd) { margin-block-start: var(--wave); }
.orb-slot:hover,
.orb-slot:focus-within { z-index: 5; }

.orb {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(190px, 21.5vw, 292px);
  min-height: clamp(46px, 5.6vh, 58px);
  padding: 10px clamp(15px, 1.7vw, 24px);
  text-align: center;
  border-radius: 999px;
  color: var(--accent-ink);
  background:
    linear-gradient(140deg,
      color-mix(in oklab, var(--accent) 90%, #FFFFFF) 0%,
      var(--accent) 54%,
      color-mix(in oklab, var(--accent) 88%, var(--pw, var(--accent))) 100%);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, #FFFFFF 36%, transparent),
    0 16px 34px -16px color-mix(in oklab, var(--accent) 78%, transparent);
  transform: translate(var(--gx, 0px), var(--gy, 0px));
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              filter var(--dur) var(--ease);
}
.orb:hover, .orb:focus-visible {
  filter: saturate(1.1) brightness(1.04);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, #FFFFFF 44%, transparent),
    0 26px 48px -18px color-mix(in oklab, var(--accent) 86%, transparent);
}

.orb-title {
  font-family: var(--font-display);
  font-size: clamp(0.94rem, 1.28vw, 1.12rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.012em;
  text-wrap: balance;
}

/* the note hangs off the pill — absolute, so nothing reflows */
.orb-note {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: min(34ch, 74vw);
  font-family: var(--font-serif);
  font-size: var(--t-small);
  font-weight: 300;
  line-height: 1.55;
  color: var(--ink-soft);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur) var(--ease);
}
.orb:hover .orb-note,
.orb:focus-visible .orb-note { opacity: 1; }

/* the press. `scale` is its own property, so it composes with the
   pointer-gravity translate instead of overwriting it. */
.orb.is-pop { animation: orbPop 520ms var(--ease); }
@keyframes orbPop {
  0%   { scale: 1; }
  38%  { scale: 0.945; }
  100% { scale: 1; }
}

/* — the fifth pill : reaching her ————————————————————————————
   Navigation is filled; an action is outlined. The panel opens
   in flow under the pill, so nothing overlaps and the footer
   simply moves down to make room.
   ============================================================ */
.reach {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.orb-ghost {
  color: var(--accent);
  background: color-mix(in oklab, var(--accent) 11%, transparent);
  border: 1.5px solid color-mix(in oklab, var(--accent) 56%, transparent);
  box-shadow: none;
}
.orb-ghost:hover,
.orb-ghost:focus-visible {
  filter: none;
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  border-color: var(--accent);
  box-shadow: 0 16px 34px -20px color-mix(in oklab, var(--accent) 70%, transparent);
}
/* drawn from two borders rather than set as a glyph — the arrow
   characters are not in the Thmanyah faces and fall back badly */
.orb-chev {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-inline-start: 12px;
  border-right: 1.6px solid currentColor;
  border-bottom: 1.6px solid currentColor;
  translate: 0 -2px;
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}
.orb-ghost[aria-expanded="true"] .orb-chev { transform: rotate(225deg); }

.reach-panel {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  animation: reachIn 340ms var(--ease) both;
}
.reach-panel[hidden] { display: none; }
@keyframes reachIn {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: none; }
}

.reach-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 11px clamp(18px, 2vw, 26px);
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--accent) 20%, var(--silver-faint));
  background: color-mix(in oklab, var(--ground-raise) 74%, transparent);
  text-align: start;
  transition: transform var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              background var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
}
.reach-link b {
  font-family: var(--font-sans);
  font-size: var(--t-small);
  font-weight: 500;
  color: var(--ink);
  unicode-bidi: isolate;
}
.reach-link:hover,
.reach-link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--ground-raise);
  box-shadow: var(--shadow-lift);
}

@media (max-width: 1080px) {
  .orbs { --wave: 24px; --tuck: 0px; gap: 12px clamp(12px, 2vw, 22px); }
  .orb-slot { flex: 0 0 auto; }
  .orb-slot + .orb-slot { margin-inline-start: 0; }
  .orb { width: clamp(200px, 40vw, 320px); }
}
@media (max-width: 720px) {
  .orbs {
    --wave: 0px;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding-block: 30px 40px;
  }
  .orb-slot:nth-child(odd) { margin-block-start: 0; }
  .orb { width: 100%; min-height: 58px; }
  .orb-note { display: none; }
  .reach { align-items: stretch; }
  .reach-panel { flex-direction: column; }
  .reach-link { align-items: center; }
}

/* — the transition veil ————————————————————————————————— */
#veil {
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  background: var(--vw, var(--accent));
  clip-path: circle(0% at var(--vx, 50%) var(--vy, 50%));
}
#veil.is-wiping { animation: wipe 900ms var(--swoop) forwards; }
@keyframes wipe {
  0%   { clip-path: circle(0% at var(--vx) var(--vy)); }
  46%  { clip-path: circle(150% at var(--vx) var(--vy)); }
  54%  { clip-path: circle(150% at var(--vx) var(--vy)); }
  100% { clip-path: circle(0% at var(--vx) var(--vy)); }
}

/* — cursor ——————————————————————————————————————————————— */
#cursor, #cursor-dot {
  position: fixed;
  top: 0; left: 0;
  z-index: 200;
  pointer-events: none;
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--dur) var(--ease),
              width var(--dur) var(--ease),
              height var(--dur) var(--ease),
              background var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
#cursor {
  width: 30px; height: 30px;
  border: 1px solid color-mix(in oklab, var(--world) 55%, transparent);
  margin: -15px 0 0 -15px;
}
#cursor-dot {
  width: 5px; height: 5px;
  background: var(--world);
  margin: -2.5px 0 0 -2.5px;
}
body.has-cursor #cursor, body.has-cursor #cursor-dot { opacity: 1; }
body.cursor-hot #cursor {
  width: 62px; height: 62px;
  margin: -31px 0 0 -31px;
  background: color-mix(in oklab, var(--world) 10%, transparent);
  border-color: color-mix(in oklab, var(--world) 30%, transparent);
}
body.cursor-hot #cursor-dot { opacity: 0; }
body.has-cursor { cursor: none; }
body.has-cursor a, body.has-cursor button { cursor: none; }

/* — reveal on scroll ————————————————————————————————————— */
.rv {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 760ms var(--ease), transform 760ms var(--ease);
}
.rv.in { opacity: 1; transform: none; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
  :root { --spine: 0px; }

  .spine {
    inset-block-start: auto;
    inset-block-end: 0;
    inset-inline: 0;
    width: auto;
    height: 62px;
    flex-direction: row;
    justify-content: center;
    gap: 6px;
    padding-inline: 10px;
    background: var(--ground-veil);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--silver-faint);
    pointer-events: auto;
  }
  .spine::before { display: none; }
  .spine-tick { width: 44px; height: 44px; }
  .spine-tick .tip { display: none; }

  .topbar { padding-inline: 16px; }

  .hub.is-open { padding-block: 0 100px; min-height: auto; }
  .hub-stage { padding-block: 104px 34px; }

  .world { padding-bottom: 80px; }
  .world-head { padding-block: 104px 30px; }
}

@media (hover: none) {
  body.has-cursor { cursor: auto; }
  #cursor, #cursor-dot { display: none; }
}