/* ===========================================================
   Pop Learning — shared design system
   A chunky, crayon-box look shared by every app in the suite.
   =========================================================== */
@import url("https://fonts.googleapis.com/css2?family=Fredoka:wght@400;500;600;700&display=swap");

:root {
  --paper: #fff8ee;
  --ink: #2b2440;
  --ink-soft: #6b6480;
  --label: #ffffff;
  --rail: #ffffff;
  --shadow: rgba(43, 36, 64, 0.16);
  --pop: #fa5252;
  --font: "Fredoka", ui-rounded, "SF Pro Rounded", "Segoe UI Rounded", "Nunito", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}
html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: var(--font);
  background: radial-gradient(120% 90% at 50% -10%, #fffdf8 0%, var(--paper) 55%, #fbefdc 100%);
  color: var(--ink);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  user-select: none;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px clamp(14px, 4vw, 28px) 6px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.brand .home {
  border: none;
  background: #fff;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  font-size: 1.3rem;
  box-shadow: 0 3px 0 var(--shadow);
  cursor: pointer;
  display: grid;
  place-items: center;
  text-decoration: none;
  flex: 0 0 auto;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.brand .home:active {
  transform: translateY(3px);
  box-shadow: 0 0 0 var(--shadow);
}
.brand .titles {
  display: flex;
  flex-direction: column;
  line-height: 1;
  min-width: 0;
}
.brand h1 {
  margin: 0;
  font-size: clamp(1.2rem, 5vw, 1.6rem);
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.brand h1 span {
  color: var(--pop);
}
.brand p {
  margin: 2px 0 0;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.ctrl {
  border: none;
  background: #fff;
  color: var(--ink);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 9px 13px;
  border-radius: 999px;
  box-shadow: 0 3px 0 var(--shadow);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.15s ease;
}
.ctrl:active {
  transform: translateY(3px);
  box-shadow: 0 0 0 var(--shadow);
}
.ctrl[aria-pressed="true"] {
  background: var(--ink);
  color: #fff;
}
.ctrl:focus-visible {
  outline: 3px solid #4dabf7;
  outline-offset: 2px;
}

/* ---------- stage ---------- */
.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 3vh, 26px);
  padding: 8px clamp(14px, 4vw, 28px) 4px;
}

/* the chunky press-down card — the signature element */
.card {
  position: relative;
  width: min(78vw, 360px);
  aspect-ratio: 1 / 1.06;
  border-radius: 38px;
  background: var(--c, #fa5252);
  box-shadow: 0 16px 0 var(--c-dark, #d23b3b), 0 30px 46px rgba(43, 36, 64, 0.28);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 18px;
  border: none;
  transition: transform 0.09s ease, box-shadow 0.09s ease;
  will-change: transform;
}
.card:active {
  transform: translateY(12px);
  box-shadow: 0 4px 0 var(--c-dark, #d23b3b), 0 14px 22px rgba(43, 36, 64, 0.22);
}
.card:focus-visible {
  outline: 4px solid #2b2440;
  outline-offset: 6px;
}
.card.pop {
  animation: pop 0.42s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes pop {
  0% {
    transform: scale(0.86) rotate(-3deg);
  }
  60% {
    transform: scale(1.04) rotate(1.5deg);
  }
  100% {
    transform: scale(1) rotate(0);
  }
}

/* word / value label sticker */
.label {
  margin-top: clamp(10px, 3vh, 22px);
  background: var(--label);
  color: var(--ink);
  border-radius: 22px;
  padding: 8px 18px 9px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 0 rgba(0, 0, 0, 0.10);
  max-width: 90%;
}
.label .emoji {
  font-size: clamp(1.7rem, 7vw, 2.4rem);
  line-height: 1;
}
.label .word {
  font-size: clamp(1.05rem, 4.6vw, 1.5rem);
  font-weight: 600;
}

.tap-hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ---------- nav row ---------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 5vw, 28px);
}
.arrow {
  border: none;
  width: clamp(62px, 17vw, 80px);
  height: clamp(62px, 17vw, 80px);
  border-radius: 50%;
  background: #fff;
  color: var(--ink);
  font-size: clamp(1.8rem, 7vw, 2.4rem);
  box-shadow: 0 6px 0 var(--shadow);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.arrow:active {
  transform: translateY(6px);
  box-shadow: 0 0 0 var(--shadow);
}
.arrow:focus-visible {
  outline: 3px solid #4dabf7;
  outline-offset: 3px;
}
.say {
  border: none;
  height: clamp(62px, 17vw, 80px);
  padding: 0 clamp(22px, 7vw, 38px);
  border-radius: 999px;
  background: #ffd43b;
  color: var(--ink);
  font-family: var(--font);
  font-weight: 700;
  font-size: clamp(1.05rem, 4.6vw, 1.4rem);
  box-shadow: 0 6px 0 #e0b400;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}
.say:active {
  transform: translateY(6px);
  box-shadow: 0 0 0 #e0b400;
}
.say:focus-visible {
  outline: 3px solid #2b2440;
  outline-offset: 3px;
}

/* ---------- bottom: progress + rail ---------- */
.bottom {
  padding: 6px clamp(14px, 4vw, 28px) calc(14px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.counter {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
}
.progress {
  width: min(92vw, 520px);
  height: 9px;
  border-radius: 999px;
  background: #efe3ce;
  overflow: hidden;
}
.progress i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, #fa5252, #ff922b, #ffd43b);
  transition: width 0.25s ease;
}
.rail {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 5px;
  max-width: min(96vw, 560px);
}
.rail button {
  border: none;
  min-width: 30px;
  height: 30px;
  padding: 0 7px;
  border-radius: 9px;
  background: #fff;
  color: var(--ink-soft);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.8rem;
  box-shadow: 0 2px 0 var(--shadow);
  cursor: pointer;
  transition: transform 0.08s ease;
}
.rail button:active {
  transform: translateY(2px);
}
.rail button.active {
  color: #fff;
  transform: translateY(2px);
  box-shadow: none;
}
.rail button:focus-visible {
  outline: 2px solid #4dabf7;
  outline-offset: 1px;
}

/* confetti stars */
.spark {
  position: fixed;
  pointer-events: none;
  font-size: 1.4rem;
  z-index: 50;
  animation: rise 0.9s ease-out forwards;
}
@keyframes rise {
  0% {
    transform: translate(0, 0) scale(0.4);
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  100% {
    transform: translate(var(--dx), -120px) scale(1.2) rotate(var(--rot));
    opacity: 0;
  }
}

/* ---------- voice picker modal ---------- */
.pop-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(43, 36, 64, 0.45);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.pop-modal {
  background: var(--paper);
  color: var(--ink);
  width: min(560px, 100%);
  max-height: 82vh;
  border-radius: 26px 26px 0 0;
  padding: 20px 18px calc(18px + env(safe-area-inset-bottom));
  box-shadow: 0 -10px 40px rgba(43, 36, 64, 0.3);
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: sheet 0.22s ease;
}
@keyframes sheet {
  from {
    transform: translateY(40px);
    opacity: 0.6;
  }
  to {
    transform: none;
    opacity: 1;
  }
}
@media (min-width: 560px) {
  .pop-modal-backdrop {
    align-items: center;
    padding: 20px;
  }
  .pop-modal {
    border-radius: 26px;
  }
}
.pop-modal h2 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
}
.pop-modal-hint {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.85rem;
  font-weight: 500;
}
.pop-voice-list {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 2px;
  -webkit-overflow-scrolling: touch;
}
.pop-voice-row {
  border: none;
  text-align: left;
  cursor: pointer;
  background: #fff;
  color: var(--ink);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 14px;
  padding: 11px 14px;
  box-shadow: 0 2px 0 var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}
.pop-voice-row small {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.72rem;
  white-space: nowrap;
}
.pop-voice-row.sel {
  background: var(--pop);
  color: #fff;
  box-shadow: 0 2px 0 #c23b3b;
}
.pop-voice-row.sel small {
  color: rgba(255, 255, 255, 0.85);
}
.pop-voice-row:focus-visible {
  outline: 3px solid #4dabf7;
  outline-offset: 2px;
}
.pop-modal-tip {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
  line-height: 1.35;
}
.pop-modal-done {
  border: none;
  cursor: pointer;
  background: var(--ink);
  color: #fff;
  font-family: var(--font);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 999px;
  padding: 13px;
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.25);
}
.pop-modal-done:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0.25);
}

/* ---------- share/QR modal ---------- */
.pop-share-modal {
  align-items: center;
  text-align: center;
}
.pop-share-modal .qr-box {
  margin: 4px auto;
  padding: 12px;
  background: #fff;
  border-radius: 18px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
  line-height: 0;
}
.pop-share-modal .qr-box svg {
  width: min(70vw, 240px);
  height: auto;
}
.pop-share-modal .pop-modal-link {
  color: var(--ink-soft);
  font-size: 0.8rem;
  font-weight: 600;
  word-break: break-all;
  margin: 4px 6px 8px;
}
.pop-share-modal .qr-actions {
  display: flex;
  gap: 10px;
  width: 100%;
}
.pop-share-modal .qr-actions .pop-modal-done {
  flex: 1;
}
.pop-share-modal .pop-modal-secondary {
  background: var(--ink-soft);
  opacity: 0.9;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}