/* Rock Pool styles. Same family as Riptide: fonts, colours and building blocks.
   Fonts are self-hosted (see fonts/). */

@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 700 800;
  font-display: swap;
  src: url('../fonts/syne.woff2') format('woff2');
}
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('../fonts/outfit.woff2') format('woff2');
}

:root {
  --abyss: #061014;
  --depth: #0e2c30;
  --trench: #03080c;
  --foam: #e8f6f3;
  --mist: #93b0b4;
  --tide: #2ee6c7;
  --flare: #ff5d3a;
  --sand: #f0c14d;
  --panel: rgba(12, 30, 33, 0.96);
  --line: rgba(232, 246, 243, 0.14);

  /* Reserved band at the top (as in Riptide) so a ~44px platform badge can
     never cover the game. Short landscape phones use the side layout instead. */
  --badge-reserve: 56px;
  --safe-top: calc(var(--badge-reserve) + env(safe-area-inset-top, 0px));
  --safe-bottom: max(14px, env(safe-area-inset-bottom, 0px));
  --gutter: 16px;
  --pad: 12px;
  --display: 'Syne', 'Outfit', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text: 'Outfit', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
@media (max-width: 359px) {
  :root { --gutter: 6px; }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: #040b0e;
  color: var(--foam);
  font-family: var(--text);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

body {
  overflow: hidden;
  background:
    radial-gradient(120% 70% at 50% 110%, rgba(14, 58, 60, 0.55), transparent 60%),
    radial-gradient(80% 60% at 50% -10%, rgba(14, 44, 48, 0.35), transparent 70%),
    #040b0e;
}

p, h1, h2, ol, dl { margin: 0; }
button { font: inherit; color: inherit; cursor: pointer; }
button:focus-visible { outline: 2px solid var(--sand); outline-offset: 3px; }
button:disabled { cursor: default; opacity: 0.45; }

.nums { font-variant-numeric: tabular-nums; }
.noscript { position: fixed; inset: auto 0 20px; text-align: center; }

/* ---------- Layout ---------- */

.app {
  height: 100vh;
  height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  justify-items: center;
  padding: var(--safe-top) max(var(--gutter), env(safe-area-inset-right, 0px)) var(--safe-bottom) max(var(--gutter), env(safe-area-inset-left, 0px));
}
.app.wide {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  column-gap: clamp(24px, 4vw, 72px);
}
.app.wide .stage { grid-column: 2; }
/* Short landscape phones: no top band, the board uses the full height. */
.app.split {
  padding-top: max(10px, env(safe-area-inset-top, 0px));
  padding-bottom: max(10px, env(safe-area-inset-bottom, 0px));
}

.rail { min-width: 0; display: none; }
.app.wide .rail { display: block; }
.rail-left { justify-self: end; }
.rail-right { justify-self: start; }
.rail-copy, .rail .rules { width: min(340px, 100%); }
.rail-left .rail-copy { margin-left: auto; }

.rail-title {
  margin: 10px 0 14px;
  font-family: var(--display);
  font-weight: 800;
  line-height: 1;
  color: var(--foam);
}
.rail .lede { color: var(--foam); opacity: 0.9; }

.rules { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.rules li { display: grid; grid-template-columns: 10px 1fr; gap: 12px; align-items: start; color: var(--mist); font-size: 14px; line-height: 1.5; }
.rules strong { display: block; color: var(--foam); font-weight: 600; font-size: 15px; }
.pip { width: 9px; height: 9px; border-radius: 50%; background: var(--tide); margin-top: 6px; }
.pip.sand { background: var(--sand); }
.pip.flare { background: var(--flare); }

/* The stage is sized by JS (js/app.js, layout()). */
.stage {
  position: relative;
  width: min(420px, 100%);
  height: 100%;
  border-radius: 28px;
  overflow: hidden;
  background: var(--abyss);
  border: 1px solid rgba(147, 176, 180, 0.2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 6px rgba(46, 230, 199, 0.03);
  user-select: none;
  -webkit-user-select: none;
  container-type: inline-size;
}
.stage.compact { border-radius: 20px; }

/* ---------- Fit-to-width text (JS sets the exact size) ---------- */

.fit { white-space: nowrap; overflow: visible; }
.fit > span { display: inline-block; white-space: nowrap; }

/* ---------- Shared text + buttons ---------- */

.kicker {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}
.lede { font-size: 15px; line-height: 1.5; font-weight: 500; }
.fine-print { font-size: 11.5px; line-height: 1.4; color: var(--mist); }

.icon-btn {
  width: 44px;
  height: 44px;
  flex: none;
  border-radius: 50%;
  border: 1px solid rgba(232, 246, 243, 0.22);
  background: rgba(6, 16, 20, 0.35);
  display: grid;
  place-items: center;
  padding: 0;
}
.icon-btn svg { width: 20px; height: 20px; }

.launch {
  width: 100%;
  min-height: 54px;
  border: 0;
  border-radius: 999px;
  background: var(--tide);
  color: #03201b;
  font-family: var(--display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  box-shadow: 0 10px 30px rgba(46, 230, 199, 0.18);
  transition: transform 0.08s ease, filter 0.15s ease;
}
.launch:hover { filter: brightness(1.06); }
.launch.long { font-size: 14px; letter-spacing: 0.08em; white-space: nowrap; padding: 0 12px; }
.launch:active { transform: scale(0.98); }
.launch .btn-main { display: block; line-height: 1.1; }
.launch .btn-sub { display: block; margin-top: 2px; font-family: var(--text); font-weight: 600; font-size: 12px; letter-spacing: 0.06em; text-transform: none; opacity: 0.85; }

.ghost {
  width: 100%;
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid rgba(232, 246, 243, 0.22);
  background: transparent;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0 8px;
}
.ghost:hover { background: rgba(232, 246, 243, 0.05); }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.text-btn {
  justify-self: center;
  min-height: 44px;
  padding: 0 18px;
  border: 0;
  background: transparent;
  color: var(--foam);
  font-weight: 600;
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(232, 246, 243, 0.4);
}

/* ---------- Puzzle screen ---------- */

.play {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 44px 22px auto 20px 48px;
  grid-template-areas: "top" "meter" "board" "status" "controls";
  row-gap: 8px;
  align-content: center;
  padding: var(--pad);
}
.topbar { grid-area: top; display: flex; align-items: center; gap: 10px; min-width: 0; }
.titles { flex: 1; min-width: 0; text-align: center; }
.titles .kicker { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.play-title {
  font-family: var(--display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.meter { grid-area: meter; display: flex; align-items: center; justify-content: center; gap: 14px; min-width: 0; white-space: nowrap; }
.meter-item { font-size: 13px; color: var(--mist); }
.meter-item strong { color: var(--foam); font-family: var(--display); font-weight: 800; font-size: 16px; margin-left: 3px; }
.meter-item.over strong { color: var(--sand); }
.meter-tag {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid currentColor;
  color: var(--tide);
}
.meter-tag.medium { color: var(--sand); }
.meter-tag.hard { color: var(--flare); }
.play.behind { visibility: hidden; }
.board-wrap { grid-area: board; display: grid; place-items: center; min-width: 0; min-height: 0; }
.status { grid-area: status; font-size: 13px; line-height: 20px; color: var(--mist); text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.status.hint-on { color: var(--sand); font-weight: 600; }
.controls { grid-area: controls; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.ctl {
  min-height: 48px;
  min-width: 44px;
  border-radius: 999px;
  border: 1px solid rgba(232, 246, 243, 0.22);
  background: rgba(6, 16, 20, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-weight: 600;
  font-size: 14px;
  padding: 0 8px;
}
.ctl svg { width: 19px; height: 19px; flex: none; }
.ctl.hint { border-color: rgba(240, 193, 77, 0.55); color: var(--sand); background: rgba(240, 193, 77, 0.08); }
.ctl:not(:disabled):hover { background: rgba(232, 246, 243, 0.06); }

/* Side-by-side (short landscape phones): board on the left, panel on the right. */
.app.split .play {
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: 44px auto minmax(0, 1fr) auto 48px;
  grid-template-areas:
    "board top"
    "board meter"
    "board ."
    "board status"
    "board controls";
  align-content: stretch;
  column-gap: 12px;
  padding: 8px;
}
.app.split .controls { gap: 6px; }
.app.split .meter { flex-wrap: wrap; row-gap: 4px; column-gap: 12px; padding-top: 4px; }
.app.split .status { white-space: normal; line-height: 1.35; padding: 4px 0; }
.app.split .play-title { font-size: 15px; }
.app.split .topbar { gap: 6px; }
.app.split .ctl { flex-direction: column; gap: 1px; font-size: 11.5px; border-radius: 16px; }
.app.split .ctl svg { width: 17px; height: 17px; }

/* ---------- Board ---------- */

.board {
  position: relative;
  touch-action: none;
  border-radius: 14px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
}
.board .pool { position: absolute; inset: 0; display: block; }
.pieces { position: absolute; inset: 0; touch-action: none; }
.piece {
  position: absolute;
  left: 0;
  top: 0;
  border-radius: calc(var(--cell, 40px) * 0.26);
  touch-action: none;
  cursor: grab;
  transition: transform 0.14s ease-out;
  will-change: transform;
}
.piece canvas { display: block; pointer-events: none; transition: transform 0.12s ease-out, filter 0.12s ease-out; }
.piece.h { cursor: ew-resize; }
.piece.v { cursor: ns-resize; }
.piece:focus { outline: none; }
.piece.dragging { transition: none; cursor: grabbing; z-index: 3; }
/* Drag feedback: the piece lifts (a little bigger, with a deeper shadow) and
   settles with a tiny bounce when let go. */
.piece.dragging canvas { transform: scale(1.06); filter: drop-shadow(0 calc(var(--cell, 40px) * 0.12) calc(var(--cell, 40px) * 0.1) rgba(0, 0, 0, 0.5)) brightness(1.06); }
.piece.settling { transition: transform 0.24s cubic-bezier(0.34, 1.56, 0.64, 1); }
/* Selected: a thick light ring plus a dark halo, readable without colour. */
.piece.selected { box-shadow: 0 0 0 3px var(--foam), 0 0 0 6px rgba(3, 8, 12, 0.7); z-index: 2; }
.piece:focus-visible { box-shadow: 0 0 0 3px var(--sand), 0 0 0 6px rgba(3, 8, 12, 0.8); z-index: 2; }
.board.preview .piece { cursor: default; transition: none; }
.piece.bump canvas { animation: bump 0.2s ease; }
@keyframes bump { 30% { transform: scale(0.95); filter: brightness(1.3); } 70% { transform: scale(1.02); } }

/* Hint: the piece pulses with a dashed yellow ring; a dashed ghost shows where it goes. */
.piece.hinted { outline: 3px dashed var(--sand); outline-offset: 2px; z-index: 2; animation: hintpulse 0.8s ease-in-out infinite alternate; }
@keyframes hintpulse { from { filter: brightness(1); } to { filter: brightness(1.35); } }
.hint-ghost {
  position: absolute;
  left: 0;
  top: 0;
  border: 3px dashed var(--sand);
  border-radius: calc(var(--cell, 40px) * 0.26);
  background: rgba(240, 193, 77, 0.16);
  pointer-events: none;
  display: grid;
  place-items: center;
  z-index: 1;
}
.hint-ghost::after {
  content: '';
  width: calc(var(--cell, 40px) * 0.34);
  height: calc(var(--cell, 40px) * 0.34);
  border-top: 4px solid var(--sand);
  border-right: 4px solid var(--sand);
  transform: rotate(45deg);
}
.hint-ghost[data-dir="left"]::after { transform: rotate(-135deg); }
.hint-ghost[data-dir="up"]::after { transform: rotate(-45deg); }
.hint-ghost[data-dir="down"]::after { transform: rotate(135deg); }

/* Solved: a happy hop, then a scuttle out through the gap into the sea. */
.piece.happy canvas { animation: hop 0.2s ease-out 2 alternate; }
@keyframes hop { from { transform: translateY(0) rotate(0); } to { transform: translateY(-18%) rotate(-5deg); } }
.piece.leaving { transition: transform 0.45s cubic-bezier(0.5, 0, 0.75, 0), opacity 0.2s ease-in 0.32s; opacity: 0; }
.piece.leaving canvas { animation: scuttle 0.08s linear infinite alternate; }
@keyframes scuttle { from { transform: rotate(-7deg) translateY(-4%); } to { transform: rotate(7deg) translateY(4%); } }
.piece.gone { opacity: 0; transition: opacity 0.25s linear; }

/* ---------- Water, tide and surf (decorative CSS layers over the pool canvas) ---------- */

.water { position: absolute; overflow: hidden; pointer-events: none; }
.shimmer {
  position: absolute;
  inset: -40%;
  background-image:
    radial-gradient(ellipse 9% 4% at 20% 30%, rgba(232, 255, 250, 0.16), transparent 70%),
    radial-gradient(ellipse 7% 3% at 65% 18%, rgba(232, 255, 250, 0.13), transparent 70%),
    radial-gradient(ellipse 10% 4% at 45% 62%, rgba(232, 255, 250, 0.12), transparent 70%),
    radial-gradient(ellipse 6% 3% at 82% 75%, rgba(232, 255, 250, 0.14), transparent 70%),
    radial-gradient(ellipse 8% 3% at 12% 82%, rgba(232, 255, 250, 0.1), transparent 70%);
  background-size: 50% 50%;
  animation: drift 18s ease-in-out infinite alternate;
}
.shimmer.two { background-size: 37% 41%; opacity: 0.8; animation: drift2 23s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translate(0, 0) rotate(0deg); } to { transform: translate(6%, 4%) rotate(3deg); } }
@keyframes drift2 { from { transform: translate(3%, 5%) rotate(2deg); } to { transform: translate(-4%, -2%) rotate(-2deg); } }
/* The tide going out: the wet edge just inside the rim slowly grows, then eases back. */
.tideline {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 calc(var(--cell, 40px) * 0.1) calc(var(--cell, 40px) * 0.02) rgba(214, 190, 140, 0.25);
  animation: tide 9s ease-in-out infinite alternate;
}
@keyframes tide {
  to { box-shadow: inset 0 0 calc(var(--cell, 40px) * 0.35) calc(var(--cell, 40px) * 0.1) rgba(214, 190, 140, 0.3); }
}
/* Surf in the gap: little foam crests slipping out to sea. */
.surf {
  position: absolute;
  overflow: hidden;
  pointer-events: none;
  background-image: radial-gradient(ellipse 60% 48% at 0% 50%, transparent 62%, rgba(232, 246, 243, 0.8) 66%, transparent 74%);
  background-size: calc(var(--cell, 40px) * 0.42) 100%;
  animation: surf 2.4s linear infinite;
}
@keyframes surf { to { background-position: calc(var(--cell, 40px) * 0.42) 0; } }
.board.freed .surf { animation-duration: 0.9s; }

/* Drag: the track the piece can slide along, and where it will land. */
.lane, .snap { position: absolute; left: 0; top: 0; pointer-events: none; border-radius: calc(var(--cell, 40px) * 0.26); }
.lane { background: rgba(232, 246, 243, 0.06); border: 2px dashed rgba(232, 246, 243, 0.3); }
.snap { border: 2px solid rgba(46, 230, 199, 0.75); background: rgba(46, 230, 199, 0.12); }

/* Celebration: splash rings, bubbles and confetti at the gap. */
.fx { position: absolute; inset: 0; pointer-events: none; z-index: 4; }
.fx i { position: absolute; display: block; }
.splash-ring {
  width: var(--s); height: var(--s); margin: calc(var(--s) / -2) 0 0 calc(var(--s) / -2);
  border: 3px solid rgba(232, 246, 243, 0.85); border-radius: 50%;
  animation: ring 0.7s ease-out var(--d) both;
}
@keyframes ring { from { transform: scale(0.2); opacity: 1; } to { transform: scale(1); opacity: 0; } }
.bubble {
  width: calc(var(--r) * 2); height: calc(var(--r) * 2); margin: calc(var(--r) * -1) 0 0 calc(var(--r) * -1);
  border-radius: 50%; border: 2px solid rgba(232, 246, 243, 0.8);
  background: radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.7), rgba(46, 230, 199, 0.15) 60%);
  animation: rise 1.3s ease-out var(--d) both;
}
@keyframes rise { from { transform: translate(0, 0) scale(0.5); opacity: 0; } 15% { opacity: 1; } to { transform: translate(var(--dx), var(--dy)) scale(1); opacity: 0; } }
.confetti {
  width: calc(var(--cell, 40px) * 0.12); height: calc(var(--cell, 40px) * 0.22); border-radius: 2px; background: var(--c);
  animation: burst 1.4s cubic-bezier(0.2, 0.7, 0.4, 1) var(--d) both;
}
@keyframes burst {
  from { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  60% { transform: translate(var(--dx), var(--dy)) rotate(calc(var(--rot) * 0.6)); opacity: 1; }
  to { transform: translate(var(--dx), calc(var(--dy) + var(--fall))) rotate(var(--rot)); opacity: 0; }
}

/* ---------- Sheets ---------- */

.sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 18px 20px;
  background: linear-gradient(180deg, rgba(14, 34, 38, 0.97), rgba(9, 24, 27, 0.99));
  border-top: 1px solid var(--line);
  z-index: 3;
  max-height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
}
.sheet.cover { top: 0; border-top: 0; }
.sheet-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.sheet-title { font-family: var(--display); font-weight: 800; font-size: 22px; line-height: 1.15; margin-top: 2px; }

.title-head { display: flex; flex-direction: column; gap: 10px; flex: 1 1 auto; min-height: 0; }
.title-actions { display: grid; gap: 10px; }
.wordmark {
  margin: 2px 0 0;
  font-family: var(--display);
  font-weight: 800;
  line-height: 1;
  color: var(--foam);
}
.hero { flex: 1 1 0; min-height: 0; position: relative; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.high { font-size: 13px; color: var(--mist); }
.high strong { color: var(--sand); font-weight: 700; }
.sheet-foot { text-align: center; font-size: 11.5px; color: var(--mist); opacity: 0.9; line-height: 1.2; margin: -6px 0; }
.foot-link {
  font-size: inherit;
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 3px;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  padding: 0 3px;
}
.foot-link:hover, .foot-link:focus-visible { color: var(--foam); }
.foot-link:focus-visible { outline: 2px solid var(--sand); outline-offset: 2px; }
.save-note { text-align: center; }

/* Practice tiers */
.tier-list { display: grid; gap: 10px; }
.tier-btn {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 10px 16px;
  border-radius: 18px;
  border: 1px solid rgba(232, 246, 243, 0.2);
  background: rgba(3, 8, 12, 0.45);
  text-align: left;
}
.tier-btn:hover { background: rgba(232, 246, 243, 0.05); }
.tier-btn .pip { margin: 0; width: 12px; height: 12px; }
.tier-btn .pip.square { border-radius: 2px; }
.tier-btn .pip.diamond { border-radius: 1px; transform: rotate(45deg); width: 10px; height: 10px; }
.tier-name { font-family: var(--display); font-weight: 800; font-size: 18px; display: block; }
.tier-note { font-size: 12.5px; color: var(--mist); display: block; margin-top: 2px; }
.tier-count { font-size: 12.5px; color: var(--mist); text-align: right; }
.tier-count strong { display: block; color: var(--sand); font-family: var(--display); font-size: 16px; }

/* Last 7 days */
.week-list { display: grid; gap: 8px; }
.day-btn {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 6px 14px;
  border-radius: 14px;
  border: 1px solid rgba(232, 246, 243, 0.18);
  background: rgba(3, 8, 12, 0.45);
  text-align: left;
}
.day-btn:hover { background: rgba(232, 246, 243, 0.05); }
.day-name { font-weight: 700; font-size: 14.5px; display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.day-tier { font-size: 12px; color: var(--mist); display: block; }
.day-state { font-size: 12.5px; color: var(--mist); white-space: nowrap; display: flex; align-items: center; gap: 2px; }
.day-state.done { color: var(--sand); }
.mini-star { width: 15px; height: 15px; }

/* Solved */
.solved-main { display: flex; flex-direction: column; gap: 12px; }
.stars { display: flex; justify-content: center; gap: 10px; }
.stars svg { width: 44px; height: 44px; }
.star-on { fill: var(--sand); stroke: #7a5a12; }
.star-off { fill: none; stroke: rgba(232, 246, 243, 0.4); stroke-dasharray: 3 3; }
.stars .pop { animation: starpop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) both; }
.stars .pop:nth-child(1) { animation-delay: 0.15s; }
.stars .pop:nth-child(2) { animation-delay: 0.4s; }
.stars .pop:nth-child(3) { animation-delay: 0.65s; }
@keyframes starpop { from { transform: scale(0.3) rotate(-30deg); opacity: 0; } to { transform: scale(1) rotate(0); opacity: 1; } }
.sheet.solved.enter { animation: sheetup 0.32s ease-out both; }
@keyframes sheetup { from { transform: translateY(28px); opacity: 0; } to { transform: none; opacity: 1; } }
/* One mute button on the solved screen: in the stacked layout the puzzle header
   (with its mute) stays visible above the sheet, so the sheet's own is hidden. */
.app:not(.split) .solved-mute { display: none; }
.app:not(.split) #solved-sheet { max-height: calc(100% - var(--pad) - 52px); }
.mark {
  text-align: center;
  font-family: var(--display);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sand);
}
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.stats > div {
  min-width: 0;
  padding: 9px 10px;
  border-radius: 12px;
  background: rgba(3, 8, 12, 0.55);
  border: 1px solid rgba(232, 246, 243, 0.06);
  text-align: center;
}
.stats dt { font-size: 10px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mist); }
.stats dd { margin: 4px 0 0; font-family: var(--display); font-weight: 800; font-size: 18px; line-height: 1.2; }
.actions { display: grid; gap: 10px; }

/* Split layout: sheets cover the stage in two columns. */
.app.split .sheet { top: 0; border-top: 0; padding: 12px 16px; gap: 8px; }
.app.split #title-sheet,
.app.split #solved-sheet {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  column-gap: 18px;
  align-items: center;
}
.app.split #title-sheet[hidden],
.app.split #solved-sheet[hidden] { display: none !important; }
.app.split .title-head { gap: 6px; }
.app.split .title-actions { gap: 8px; }
.app.split .launch { min-height: 48px; }
/* Side layout: the four footer links stay on one line (at 568x320 a second line would push the sheet past the stage). */
.app.split .sheet-foot { white-space: nowrap; font-size: 11px; }
.app.split .sheet-foot .foot-link { padding: 0 1px; }
.app.split .ghost { min-height: 44px; }
.app.split .lede { font-size: 13.5px; line-height: 1.4; }
.app.split .solved-main { gap: 6px; }
.app.split .stars svg { width: 34px; height: 34px; }
.app.split .stats > div { padding: 5px 6px; }
.app.split .stats dd { font-size: 16px; margin-top: 1px; }
.app.split .week-list { grid-template-columns: 1fr 1fr; gap: 6px; }
.app.split .day-btn { min-height: 44px; padding: 3px 10px; }
.app.split .tier-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.app.split .tier-btn { grid-template-columns: 12px 1fr; min-height: 88px; }
.app.split .tier-count { grid-column: 1 / -1; text-align: left; }
.app.split .tier-count strong { display: inline; margin-right: 4px; }

/* ---------- Modal (How to play) ---------- */

.modal {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: grid;
  place-items: center;
  align-items: safe center;
  padding: 14px;
  overflow-y: auto;
  background: rgba(3, 8, 12, 0.72);
  backdrop-filter: blur(3px);
}
.card {
  width: 100%;
  max-width: 420px;
  display: grid;
  gap: 12px;
  padding: 20px 18px;
  border-radius: 20px;
  background: var(--panel);
  border: 1px solid rgba(46, 230, 199, 0.35);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.card-title { font-family: var(--display); font-weight: 800; font-size: 21px; line-height: 1.15; }
.card .rules { gap: 12px; }
.app.split .card { max-width: 560px; padding: 14px 16px; gap: 8px; }
.app.split .card .rules { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.app.split .card .rules li { font-size: 12.5px; line-height: 1.4; }

.toast {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  z-index: 8;
  pointer-events: none;
  width: max-content;
  max-width: calc(100% - 28px);
  padding: 10px 16px;
  border-radius: 14px;
  background: rgba(9, 24, 27, 0.96);
  border: 1px solid rgba(46, 230, 199, 0.5);
  color: var(--foam);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

/* ---------- Remove ads / No ads (title) ---------- */

.minor-row { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 4px 12px; }
.remove-ads-btn {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid rgba(240, 193, 77, 0.55);
  background: rgba(240, 193, 77, 0.08);
  color: var(--sand);
  font-weight: 600;
  font-size: 14px;
}
.remove-ads-btn:hover { background: rgba(240, 193, 77, 0.14); }
.ads-removed { display: flex; align-items: center; min-height: 44px; color: var(--tide); font-weight: 600; font-size: 14px; }

/* ---------- Placeholder ad panel (dev preview only) ---------- */

.ad-break {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px 14px 18px;
  background: rgba(3, 8, 12, 0.985);
}
.ad-creative {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(46, 230, 199, 0.25);
  background: repeating-linear-gradient(90deg, #0f3a37 0 14px, #0a2a28 14px 28px);
}
.ad-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.ad-kicker {
  font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--mist);
  background: rgba(3, 8, 12, 0.65); padding: 4px 8px; border-radius: 6px;
}
.ad-count {
  font-family: var(--display); font-weight: 800; font-size: 30px; line-height: 1; min-width: 2ch; text-align: right;
  background: rgba(3, 8, 12, 0.65); padding: 4px 8px; border-radius: 8px;
}
.ad-count.done { font-size: 16px; letter-spacing: 0.04em; padding: 8px 10px; }
.ad-slot {
  align-self: center; width: 86%; padding: 22px 16px; border-radius: 14px;
  border: 2px dashed rgba(232, 246, 243, 0.35); background: rgba(3, 8, 12, 0.72); text-align: center; display: grid; gap: 8px;
}
.ad-slot-title { font-family: var(--display); font-weight: 800; font-size: 22px; letter-spacing: 0.08em; text-transform: uppercase; }
.ad-slot-copy { font-size: 13.5px; line-height: 1.45; color: var(--mist); }
.ad-copy { font-size: 14.5px; line-height: 1.45; font-weight: 500; background: rgba(3, 8, 12, 0.72); padding: 10px 12px; border-radius: 10px; }
/* Secondary on purpose: quiet outline, full 44px touch height, and kept
   20px (12px gap + 8px margin) below the Continue button so a child
   reaching for Continue can't hit it by accident. */
.ad-unlock {
  align-self: center; min-height: 44px; margin-top: 8px; padding: 0 18px;
  border: 1px solid rgba(232, 246, 243, 0.22); border-radius: 999px; background: transparent; color: var(--mist);
  font-size: 13px; font-weight: 500;
}
.ad-unlock:focus-visible { outline: 2px solid var(--sand); outline-offset: 2px; }

/* ---------- Pay card + grown-up check, restore code card ---------- */

.modal { overflow-x: hidden; }
.modal > .card { min-width: 0; max-width: min(420px, 100%); }
.card-copy { font-size: 14.5px; line-height: 1.5; }
.card.pay { gap: 8px; padding: 16px 16px; max-height: 100%; overflow-y: auto; overflow-wrap: anywhere; }
.card.pay .card-copy { font-size: 14px; line-height: 1.4; }
.card.pay .gate { font-size: 13.5px; line-height: 1.35; gap: 4px; }
.pay-links { display: flex; flex-wrap: wrap; justify-content: center; column-gap: 2px; margin: -6px 0 -10px; }
.pay-links .foot-link { padding: 0 5px; }
.pay-info, .pay-act { display: grid; gap: 8px; min-width: 0; }
.gate-error { line-height: 1.35; }
.pay-parent {
  font-size: 14px; line-height: 1.4; padding: 8px 10px; border-radius: 12px;
  background: rgba(240, 193, 77, 0.1); border: 1px solid rgba(240, 193, 77, 0.4); color: var(--foam);
}
.pay-parent strong { color: var(--sand); }
.pay-test { font-size: 12px; font-weight: 600; color: var(--tide); }
.gate { display: grid; gap: 6px; font-size: 14px; line-height: 1.45; }
.gate-q strong { color: var(--foam); }
.gate-input {
  width: 100%; min-height: 44px; padding: 8px 12px; border-radius: 12px;
  border: 1px solid rgba(232, 246, 243, 0.3); background: rgba(3, 8, 12, 0.6); color: var(--foam);
  font: 600 18px/1 var(--text); letter-spacing: 0.08em;
}
.gate-input:focus-visible { outline: 2px solid var(--sand); outline-offset: 2px; }
.gate-error { font-size: 13px; color: var(--flare); font-weight: 600; }
.pay-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pay-btn { min-height: 46px; border-radius: 999px; font-weight: 700; font-size: 15px; padding: 0 10px; }
.pay-no { border: 1px solid rgba(232, 246, 243, 0.35); background: rgba(6, 16, 20, 0.35); color: var(--foam); }
.pay-yes { border: 1px solid var(--tide); background: rgba(46, 230, 199, 0.14); color: var(--foam); }
.pay-btn:disabled { opacity: 0.6; cursor: default; }
.card .foot-link { min-height: 44px; }
.card.code { gap: 10px; grid-template-columns: minmax(0, 1fr); max-height: 100%; overflow-y: auto; overflow-wrap: anywhere; }
.card.code .launch { letter-spacing: 0.08em; padding: 0 10px; }
.card.code .restore-code {
  margin: 6px 0 2px;
  font: 800 clamp(16px, 5vmin, 26px) / 1.25 ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  letter-spacing: 0.06em; text-align: center; user-select: all; -webkit-user-select: all; word-break: break-all;
  padding: 10px 12px; border: 2px dashed currentColor; border-radius: 10px;
}
.app.split .card.pay, .app.split .card.code { max-width: 600px; }
.app.split .card.pay { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 16px; align-items: start; }
.app.split .card.pay > .kicker, .app.split .card.pay > .card-title { grid-column: 1 / -1; }
.app.split .card.pay > .pay-fine, .app.split .card.pay > .pay-links { grid-column: 1 / -1; }
.app.split .card.pay .pay-info { grid-column: 1; grid-row: 3; }
.app.split .card.pay .pay-act { grid-column: 2; grid-row: 3; }
/* Restore code card, side by side: code + Got it on the left, the note on the right */
.app.split .card.code { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 16px; align-items: start;
  grid-template-areas: "k n" "t n" "c n" "o f"; }
.app.split .card.code > .kicker { grid-area: k; }
.app.split .card.code > .card-title { grid-area: t; }
.app.split .card.code > .restore-code { grid-area: c; }
.app.split .card.code > #code-note { grid-area: n; font-size: 13.5px; line-height: 1.45; }
.app.split .card.code > #code-ok { grid-area: o; }
.app.split .card.code > .fine-print { grid-area: f; align-self: center; }
/* Ad placeholder panel, side by side: the slot on the left, the buttons on the right */
.app.split .ad-break { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); grid-template-rows: 1fr auto auto 1fr; column-gap: 16px; row-gap: 0; }
.app.split .ad-creative { grid-column: 1; grid-row: 1 / -1; padding: 12px; gap: 8px; }
.app.split .ad-slot { width: 100%; padding: 12px; gap: 4px; }
.app.split .ad-slot-title { font-size: 18px; }
.app.split .ad-copy { font-size: 13.5px; padding: 8px 10px; }
.app.split #ad-continue { grid-column: 2; grid-row: 2; }
.app.split .ad-unlock { grid-column: 2; grid-row: 3; margin-top: 20px; }
/* Title, side by side, payments on: How to play and the short "No ads · A$2" button share one row */
.app.split .minor-row.paid { flex-wrap: nowrap; gap: 4px 8px; }
.app.split .minor-row.paid > * { white-space: nowrap; flex: none; }
.app.split .minor-row.paid .remove-ads-btn { padding: 0 12px; }

/* ---------- Small / short screens ---------- */

@container (max-width: 340px) {
  .meter { gap: 10px; }
  .meter-item { font-size: 12px; }
  .sheet { padding: 14px 12px 16px; gap: 10px; }
  .lede { font-size: 14px; }
  .ghost { letter-spacing: 0.06em; font-size: 13px; }
  .ctl { font-size: 13px; gap: 5px; }
  .week-list { gap: 5px; }
  .day-btn { min-height: 44px; padding: 3px 12px; }
}
@media (max-height: 700px) {
  .sheet { gap: 9px; padding: 14px 14px 16px; }
  .launch { min-height: 50px; }
}

@media (prefers-reduced-motion: reduce) {
  .launch, .piece, .piece.leaving, .piece.settling, .piece canvas { transition: none; }
  .piece.hinted, .piece.bump canvas, .piece.happy canvas, .piece.leaving canvas, .stars .pop, .sheet.solved.enter,
  .shimmer, .tideline, .surf, .fx i { animation: none; }
  .piece.dragging canvas { transform: none; }
  .fx { display: none; }
}

/* Read by screen readers, not shown (used for the hint's "N moves to go" tail on narrow phones). */
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; border: 0; }