/* Magic Quill — "Storybook Dawn" theme.
 * The world is the reward: the sky itself brightens as she writes.
 * Landscape tablet-first; right-handed child → controls live on the LEFT.
 */

:root {
  --ink: #4a3650;
  --cream: #fffaf2;
  --gold: #ffd76b;
  --pink: #ff7eb6;
  --lilac: #b88ad6;
  --sky-text: #fff;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  touch-action: none;               /* no pinch zoom / pull-to-refresh */
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
}

body {
  font-family: 'Baloo 2', 'Comic Sans MS', cursive, sans-serif;
  color: var(--ink);
  position: relative;
}

/* ---------- the sky (crossfading gradient layers) ---------- */
.sky-layer {
  position: fixed; inset: 0;
  opacity: 0;
  transition: opacity 2.4s ease;
  z-index: -3;
  pointer-events: none;
}
.sky-layer.night  { background: linear-gradient(180deg, #1b1840 0%, #322a63 55%, #54417e 100%); }
.sky-layer.dawn1  { background: linear-gradient(180deg, #2e2a5e 0%, #6c4a8c 50%, #c4699c 100%); }
.sky-layer.dawn2  { background: linear-gradient(180deg, #5a5096 0%, #c4699c 45%, #ffb37e 100%); }
.sky-layer.day    { background: linear-gradient(180deg, #7ec8f7 0%, #aee3fb 55%, #ffe9c4 100%); }

body.sky-night .sky-layer.night,
body.sky-dawn1 .sky-layer.dawn1,
body.sky-dawn2 .sky-layer.dawn2,
body.sky-day   .sky-layer.day { opacity: 1; }

/* stars — visible at night, fade at dawn */
#stars {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  opacity: 0; transition: opacity 2s ease;
}
body.sky-night #stars { opacity: 1; }
body.sky-dawn1 #stars { opacity: 0.5; }
#stars i {
  position: absolute; width: 4px; height: 4px; border-radius: 50%;
  background: #fff;
  animation: twinkle 2.6s ease-in-out infinite;
}
#stars i:nth-child(2n) { animation-delay: 0.9s; width: 3px; height: 3px; }
#stars i:nth-child(3n) { animation-delay: 1.7s; }
@keyframes twinkle { 0%,100% { opacity: 0.25; } 50% { opacity: 1; } }

/* the sun — rises with her writing */
#sun {
  position: fixed; left: 12vw; z-index: -2; pointer-events: none;
  width: 16vmin; height: 16vmin; border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, #fff6c9, #ffd76b 60%, #ffb84d);
  box-shadow: 0 0 60px 24px rgba(255, 215, 107, 0.55);
  bottom: -20vmin;
  transition: bottom 2.6s cubic-bezier(.45,.05,.35,1), box-shadow 2.6s ease;
}
body.sky-dawn1 #sun { bottom: -6vmin; }
body.sky-dawn2 #sun { bottom: 16vmin; box-shadow: 0 0 80px 36px rgba(255, 215, 107, 0.65); }
body.sky-day   #sun { bottom: 52vmin; box-shadow: 0 0 90px 44px rgba(255, 224, 130, 0.7); }

/* the moon — rises for the MOON quest */
#moon {
  position: fixed; right: 14vw; z-index: -2; pointer-events: none;
  width: 13vmin; height: 13vmin; border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #fffdf0, #f0ead2 65%, #d8d0b8);
  box-shadow: 0 0 50px 18px rgba(240, 234, 210, 0.4);
  bottom: -18vmin;
  transition: bottom 2.6s cubic-bezier(.45,.05,.35,1);
}
#moon::after {            /* crescent shadow */
  content: '';
  position: absolute; top: -6%; left: -14%;
  width: 86%; height: 86%; border-radius: 50%;
  background: rgba(50, 42, 99, 0.55);
}
body.moon-up #moon { bottom: 50vmin; }

/* rain — drops appear level by level (rain-level-1..4) */
#rain {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
}
#rain i {
  position: absolute; top: -6vh;
  width: 3px; height: 16px; border-radius: 3px;
  background: linear-gradient(180deg, rgba(188,216,255,0), #bcd8ff);
  opacity: 0;
  animation: raindrop 0.9s linear infinite;
}
@keyframes raindrop {
  0% { transform: translateY(0); }
  100% { transform: translateY(80vh); }
}
body.rain-level-1 #rain i:nth-child(-n+4)  { opacity: 0.85; }
body.rain-level-2 #rain i:nth-child(-n+8)  { opacity: 0.85; }
body.rain-level-3 #rain i:nth-child(-n+12) { opacity: 0.85; }
body.rain-level-4 #rain i                  { opacity: 0.85; }

/* rainbow — RAIN quest payoff */
#rainbow {
  position: fixed; left: 50%; bottom: 18vh; z-index: -1; pointer-events: none;
  width: min(72vmin, 80vw);
  transform: translateX(-50%) scale(0.5);
  transform-origin: bottom center;
  opacity: 0;
  transition: opacity 1.4s ease, transform 1.4s cubic-bezier(.34,1.56,.64,1);
}
body.rainbow-show #rainbow { opacity: 0.92; transform: translateX(-50%) scale(1); }

/* shooting stars — STAR quest */
.shooting-star {
  position: fixed; z-index: 0; pointer-events: none;
  width: 5px; height: 5px; border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 8px 3px rgba(255, 246, 201, 0.9);
  animation: shoot 1.3s ease-out forwards;
}
.shooting-star::before {
  content: '';
  position: absolute; right: 2px; top: 1.5px;
  width: 70px; height: 2px;
  background: linear-gradient(270deg, rgba(255,255,255,0.9), rgba(255,255,255,0));
  transform-origin: right center;
  transform: rotate(-200deg);
}
@keyframes shoot {
  0% { transform: translate(0, 0); opacity: 1; }
  100% { transform: translate(38vmin, 22vmin); opacity: 0; }
}

/* extra-twinkle payoff for STAR */
body.star-burst #stars { opacity: 1; }
body.star-burst #stars i {
  width: 5px; height: 5px;
  box-shadow: 0 0 7px 2px rgba(255, 255, 255, 0.8);
  animation-duration: 1.2s;
}

/* bloomers — GROW quest flower patches (bloom-1..4) */
#meadow .bloomer {
  transform: scale(0);
  transform-box: fill-box;
  transform-origin: center bottom;
  transition: transform 0.9s cubic-bezier(.34,1.56,.64,1);
}
body.bloom-1 #meadow .bloomer.b1,
body.bloom-2 #meadow .bloomer.b2,
body.bloom-3 #meadow .bloomer.b3,
body.bloom-4 #meadow .bloomer.b4,
body.bloom-all #meadow .bloomer { transform: scale(1); }

/* writing-mode toggle on the title screen */
.mode-btn {
  font-family: inherit;
  font-size: clamp(0.95rem, 2.4vmin, 1.3rem);
  font-weight: 700;
  color: var(--ink);
  background: rgba(255, 250, 242, 0.85);
  border: none;
  border-radius: 999px;
  padding: 0.5em 1.4em;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(74, 54, 80, 0.25);
  -webkit-tap-highlight-color: transparent;
}
.mode-btn:active { transform: translateY(2px); }

/* sticker collection row on the complete panel */
#sticker-row {
  font-size: clamp(1.4rem, 4vmin, 2.2rem);
  letter-spacing: 0.3em;
  min-height: 1.2em;
}

/* meadow — darkens at night */
#meadow {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: -1;
  width: 100%; height: 26vh; pointer-events: none;
  filter: brightness(1);
  transition: filter 2.4s ease;
}
body.sky-night #meadow { filter: brightness(0.45) saturate(0.7); }
body.sky-dawn1 #meadow { filter: brightness(0.62) saturate(0.8); }
body.sky-dawn2 #meadow { filter: brightness(0.85); }

/* ---------- screens ---------- */
.screen {
  position: fixed; inset: 0;
  display: none;
  z-index: 5;
}
.screen.active { display: flex; }

/* title */
#screen-title {
  flex-direction: column; align-items: center; justify-content: center;
  gap: 2vh;
  text-align: center;
}
#screen-title h1 {
  font-size: clamp(2.4rem, 7vmin, 4.6rem);
  color: #fff;
  text-shadow: 0 3px 0 rgba(74, 54, 80, 0.35), 0 8px 26px rgba(74, 54, 80, 0.3);
  letter-spacing: 0.02em;
}
#screen-title .subtitle {
  font-size: clamp(1.1rem, 3vmin, 1.7rem);
  color: #fff;
  opacity: 0.95;
  text-shadow: 0 2px 10px rgba(74, 54, 80, 0.4);
  margin-top: -1vh;
}
#title-unicorn { width: clamp(180px, 30vmin, 300px); }
#title-unicorn .unicorn-svg { width: 100%; height: auto; }

.big-btn {
  font-family: inherit;
  font-size: clamp(1.5rem, 4.5vmin, 2.4rem);
  font-weight: 700;
  color: #7a4a12;
  background: linear-gradient(180deg, #ffe9a8, var(--gold) 60%, #ffc24d);
  border: none;
  border-radius: 999px;
  padding: 0.55em 1.8em;
  box-shadow: 0 8px 0 #d99b2b, 0 14px 30px rgba(0,0,0,0.25);
  cursor: pointer;
  animation: btn-breathe 2.2s ease-in-out infinite;
  -webkit-tap-highlight-color: transparent;
}
.big-btn:active { transform: translateY(5px); box-shadow: 0 3px 0 #d99b2b, 0 8px 18px rgba(0,0,0,0.25); }
@keyframes btn-breathe { 0%,100% { transform: scale(1); } 50% { transform: scale(1.05); } }

/* ---------- persistent rail (unicorn + speech) — LEFT side ---------- */
#rail {
  position: fixed; left: 1.5vw; bottom: 2vh;
  width: clamp(180px, 26vw, 340px);
  z-index: 6;
  pointer-events: none;
}
#screen-title.active ~ #rail { display: none; }

#unicorn-slot .unicorn-svg { width: 100%; height: auto; }

#bubble {
  background: var(--cream);
  border-radius: 22px;
  padding: 12px 16px;
  font-size: clamp(0.95rem, 2.4vmin, 1.3rem);
  font-weight: 600;
  line-height: 1.3;
  box-shadow: 0 6px 18px rgba(74, 54, 80, 0.25);
  position: relative;
  margin-bottom: 8px;
  min-height: 2.4em;
}
#bubble::after {
  content: '';
  position: absolute; bottom: -10px; left: 38px;
  border: 11px solid transparent;
  border-top-color: var(--cream);
  border-bottom: none;
}
.bubble-pop { animation: bubble-pop 0.35s cubic-bezier(.34,1.56,.64,1); }
@keyframes bubble-pop { 0% { transform: scale(0.7); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }

/* ---------- trace screen ---------- */
#screen-trace {
  flex-direction: column;
  align-items: flex-end;          /* trace card on the right for righties */
  padding: 2vh 3vw 2vh 0;
}

#word-row {
  display: flex; gap: 0.5vw;
  justify-content: center;
  width: 100%;
  padding: 0 2vw;
  margin-bottom: 1.5vh;
}
.tile {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: clamp(34px, 6.2vmin, 60px);
  height: clamp(40px, 7.4vmin, 70px);
  padding: 0 6px;
  border-radius: 14px;
  background: rgba(255, 250, 242, 0.55);
  color: var(--ink);
  font-size: clamp(1.3rem, 4.4vmin, 2.4rem);
  font-weight: 700;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.5);
  transition: transform 0.25s, background 0.4s;
}
.tile.current {
  background: var(--cream);
  box-shadow: inset 0 0 0 3px var(--gold), 0 6px 16px rgba(74,54,80,0.3);
  animation: tile-bounce 1s ease-in-out infinite;
}
.tile.done {
  background: linear-gradient(135deg, #ffd1ec, #ffe9a8 50%, #c9f0ff);
  box-shadow: 0 4px 12px rgba(74,54,80,0.2);
}
@keyframes tile-bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

.trace-card {
  background: radial-gradient(circle at 30% 20%, #fffdf7, var(--cream));
  border-radius: 32px;
  box-shadow: 0 14px 40px rgba(40, 25, 60, 0.35), inset 0 0 0 6px rgba(255, 215, 107, 0.35);
  width: min(62vw, 78vh);
  height: min(78vh, 100%);
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center;
  padding: 2vmin;
}
/* whole-word canvas: one svg slot per glyph, school lines run across each row */
#word-canvas {
  width: 100%; height: 100%;
  display: flex; flex-direction: column;
  justify-content: center;
  gap: 2vmin;
}
.word-line {
  display: flex; justify-content: center;
  width: 100%;
  /* cap 15/140, dashed midline 62/140, baseline 112/140 of slot height */
  background:
    linear-gradient(#c5a8dd, #c5a8dd) 0 10.71% / 100% 2px no-repeat,
    repeating-linear-gradient(to right, #d9c2e8 0 8px, transparent 8px 18px) 0 44.29% / 100% 2px no-repeat,
    linear-gradient(#b88ad6, #b88ad6) 0 80% / 100% 2.5px no-repeat;
}
.slot {
  display: block;
  width: calc(100% / var(--n, 4));
  aspect-ratio: 100 / 140;
  touch-action: none;
  cursor: crosshair;
  border-radius: 10px;
}
.slot.active {
  background: rgba(255, 224, 130, 0.16);
  box-shadow: inset 0 0 0 3px rgba(255, 215, 107, 0.45);
}
.slot-preview {
  stroke: #cfb9e2; opacity: 0.4;
  fill: none; stroke-width: 7;
  stroke-linecap: round; stroke-linejoin: round;
}

/* tracing strokes (classes created by tracer.js) */
.mq-under { stroke: #f0dcc8; stroke-width: 13; }
.mq-guide {
  stroke: #d9c2e8; stroke-width: 2.6;
  stroke-dasharray: 0.1 7;
  opacity: 0.85;
}
.mq-guide-active { stroke: var(--lilac); opacity: 1; }
.mq-ink { stroke-width: 9.5; }
.mq-start {
  fill: var(--gold);
  stroke: #fff; stroke-width: 1.6;
  transition: opacity 0.2s;
}
.mq-pulse { animation: dot-pulse 1.1s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes dot-pulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.35); } }
.mq-arrow { fill: var(--lilac); opacity: 0.95; transition: opacity 0.2s; }
.mq-comet {
  fill: #fff;
  filter: drop-shadow(0 0 6px #ffe66b) drop-shadow(0 0 12px #ff7eb6);
  transition: opacity 0.3s;
}
.mq-mote {
  animation: mote-drift 0.8s ease-out forwards;
  transform-box: fill-box;
}
@keyframes mote-drift {
  0% { opacity: 1; transform: translate(0, 0) scale(1); }
  100% { opacity: 0; transform: translate(var(--dx, 0), var(--dy, -12px)) scale(0.3); }
}
.mq-shake { animation: gentle-shake 0.4s ease; }
@keyframes gentle-shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-5px); } 75% { transform: translateX(5px); }
}

/* freehand mode: school writing lines + her own ink (classes from freehand.js) */
.fh-line { stroke-width: 1.4; }
.fh-cap  { stroke: #c5a8dd; }
.fh-mid  { stroke: #d9c2e8; stroke-dasharray: 4 4; opacity: 0.8; }
.fh-base { stroke: #b88ad6; stroke-width: 1.8; }
.fh-ink {
  stroke: #8ab6ff;
  stroke-width: 4.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: opacity 0.4s;
}
.fh-ink-done { stroke-width: 5.2; }
.fh-fade { opacity: 0; }

/* ---------- naming + complete panels (centered, rail stays visible) ---------- */
#screen-naming, #screen-complete {
  align-items: center; justify-content: center;
  flex-direction: column; gap: 3vh;
}
.panel {
  background: var(--cream);
  border-radius: 32px;
  padding: 4vh 4vw;
  box-shadow: 0 14px 40px rgba(40, 25, 60, 0.35);
  text-align: center;
  display: flex; flex-direction: column; gap: 2.5vh; align-items: center;
}
.panel h2 { font-size: clamp(1.6rem, 4.5vmin, 2.6rem); }
.name-choices { display: flex; gap: 2vw; }
.name-btn {
  font-family: inherit;
  font-size: clamp(1.3rem, 3.8vmin, 2rem);
  font-weight: 700;
  color: var(--ink);
  border: none; border-radius: 24px;
  padding: 0.7em 1.1em;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(74,54,80,0.25), 0 10px 22px rgba(74,54,80,0.18);
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s;
}
.name-btn:active { transform: translateY(4px); }
.name-btn[data-name="Luna"]  { background: linear-gradient(180deg, #d8ccff, #b89cff); }
.name-btn[data-name="Rosie"] { background: linear-gradient(180deg, #ffd1e4, #ff9cc6); }
.name-btn[data-name="Star"]  { background: linear-gradient(180deg, #fff3c4, #ffe066); }

/* ---------- topic picker ("What shall we learn today?") ---------- */
#screen-topics { align-items: center; justify-content: center; flex-direction: column; }
#screen-topics .panel { max-width: min(94vw, 920px); max-height: 90vh; }
#topic-grid {
  display: flex; flex-wrap: wrap;
  justify-content: center; align-content: center;
  gap: 2vmin;
  width: 100%;
  overflow-y: auto;
}
.topic-btn {
  font-family: inherit;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.3em;
  width: clamp(108px, 20vmin, 184px);
  min-height: clamp(108px, 20vmin, 184px);
  padding: 1em 0.6em;
  border: none; border-radius: 24px;
  color: var(--ink);
  font-size: clamp(1rem, 2.6vmin, 1.5rem);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 0 rgba(74,54,80,0.25), 0 10px 22px rgba(74,54,80,0.18);
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.15s;
}
.topic-btn:active { transform: translateY(4px); }
.topic-btn .emoji { font-size: clamp(2.4rem, 7vmin, 4rem); line-height: 1; }
.topic-btn .label { word-break: break-word; line-height: 1.1; }
/* pastel gradient variants cycle by position so any number of packs stays lively */
.topic-btn:nth-child(5n+1) { background: linear-gradient(180deg, #d8ccff, #b89cff); }
.topic-btn:nth-child(5n+2) { background: linear-gradient(180deg, #ffd1e4, #ff9cc6); }
.topic-btn:nth-child(5n+3) { background: linear-gradient(180deg, #fff3c4, #ffe066); }
.topic-btn:nth-child(5n+4) { background: linear-gradient(180deg, #c9f0ff, #8fd9ff); }
.topic-btn:nth-child(5n+5) { background: linear-gradient(180deg, #d6f5d0, #9be08a); }
/* the always-present built-in pack keeps a signature gold-lilac sparkle */
.topic-btn.magic { background: linear-gradient(180deg, #fff3c4, #e7c9ff); }
/* level stars under an adventure card name */
.topic-btn .stars { font-size: clamp(0.75rem, 1.9vmin, 1.05rem); letter-spacing: 0.08em; line-height: 1; }

/* ---------- Adventure Playground Quest ---------- */
/* picker + "what did you find?" reuse the topic grid/card layout */
#screen-adventures, #screen-found { align-items: center; justify-content: center; flex-direction: column; }
#screen-adventures .panel, #screen-found .panel { max-width: min(94vw, 920px); max-height: 90vh; }
#adventure-grid, #found-grid {
  display: flex; flex-wrap: wrap;
  justify-content: center; align-content: center;
  gap: 2vmin;
  width: 100%;
  overflow-y: auto;
}

/* the mission card: one big go-do prompt + a single Go button */
#screen-mission { align-items: center; justify-content: center; flex-direction: column; }
#screen-mission .panel { max-width: min(92vw, 720px); }
.mission-icon { font-size: clamp(3rem, 12vmin, 6rem); line-height: 1; }
#mission-prompt { line-height: 1.2; }

/* the title's Go-outside button: a sky-blue sibling of .big-btn */
.outside-btn {
  color: #0d4a63;
  background: linear-gradient(180deg, #cdeeff, #8fd9ff 60%, #5cc1f5);
  box-shadow: 0 8px 0 #3a9bc8, 0 14px 30px rgba(0,0,0,0.25);
}
.outside-btn:active { transform: translateY(5px); box-shadow: 0 3px 0 #3a9bc8, 0 8px 18px rgba(0,0,0,0.25); }

.sticker {
  font-size: clamp(3rem, 10vmin, 5.5rem);
  animation: sticker-spin 1.2s cubic-bezier(.34,1.56,.64,1);
}
@keyframes sticker-spin { 0% { transform: scale(0) rotate(-180deg); } 100% { transform: scale(1) rotate(0); } }

/* ---------- corner controls (left = reachable without covering writing) ---------- */
#music-btn {
  position: fixed; top: 1.5vh; left: 1.5vw; z-index: 9;
  width: clamp(44px, 7vmin, 64px); height: clamp(44px, 7vmin, 64px);
  border-radius: 50%;
  border: none;
  background: rgba(255, 250, 242, 0.85);
  color: var(--ink);
  font-size: clamp(1.2rem, 3vmin, 1.7rem);
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(74,54,80,0.25);
}
#music-btn.off { opacity: 0.45; text-decoration: line-through; }

#parent-link {
  position: fixed; bottom: 1vh; right: 1vw; z-index: 9;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  padding: 8px;
}

/* ---------- unicorn animation states ---------- */
.unicorn { pointer-events: none; }
.unicorn-svg { overflow: visible; }

.u-tail { animation: tail-sway 3.2s ease-in-out infinite; transform-box: fill-box; transform-origin: right center; }
@keyframes tail-sway { 0%,100% { transform: rotate(0deg); } 50% { transform: rotate(7deg); } }

.u-eye { transform-box: fill-box; transform-origin: center; animation: blink 4.4s infinite; }
@keyframes blink { 0%, 93%, 100% { transform: scaleY(1); } 95.5%, 97% { transform: scaleY(0.08); } }

.u-idle .u-body-group { animation: idle-bob 3s ease-in-out infinite; }
@keyframes idle-bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-4px); } }

.u-shy .u-head-group {
  transform-box: fill-box; transform-origin: center bottom;
  animation: shy-peek 3s ease-in-out infinite;
}
@keyframes shy-peek {
  0%,100% { transform: rotate(7deg) translateY(4px); }
  50% { transform: rotate(2deg) translateY(1px); }
}
.u-shy .u-stars { opacity: 0; }

.u-happy .u-body-group { animation: happy-bounce 0.55s cubic-bezier(.34,1.56,.64,1) 2; }
@keyframes happy-bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

.u-celebrate .u-body-group {
  transform-box: fill-box; transform-origin: 30% 90%;
  animation: rear-up 0.9s cubic-bezier(.34,1.56,.64,1) 2;
}
@keyframes rear-up {
  0%,100% { transform: rotate(0); }
  40% { transform: rotate(-12deg) translateY(-10px); }
}
.u-stars { opacity: 0; transition: opacity 0.3s; }
.u-celebrate .u-stars { opacity: 1; }
.u-celebrate .u-star { animation: star-pop 1s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.u-celebrate .u-star.s2 { animation-delay: 0.3s; }
.u-celebrate .u-star.s3 { animation-delay: 0.6s; }
@keyframes star-pop { 0%,100% { transform: scale(0.7); opacity: 0.6; } 50% { transform: scale(1.25); opacity: 1; } }

/* ---------- portrait fallback (game is designed landscape) ---------- */
@media (orientation: portrait) {
  #screen-trace { align-items: center; padding: 1vh 2vw; }
  .trace-card { width: 92vw; height: 58vh; }
  #rail { width: 38vw; bottom: 1vh; }
  #rotate-hint { display: block; }
}
#rotate-hint {
  display: none;
  position: fixed; top: 1vh; right: 2vw; z-index: 9;
  color: #fff; font-size: 0.9rem; opacity: 0.8;
}