:root {
  --paper: #fff8ef;
  --paper-strong: #fff2dc;
  --ink: #183153;
  --ink-soft: #49617f;
  --coral: #ff8d6d;
  --gold: #ffcb5a;
  --sky: #dff2ff;
  --sea: #68b9e6;
  --leaf: #97c46c;
  --berry: #ef5c84;
  --card: rgba(255, 255, 255, 0.92);
  --line: rgba(24, 49, 83, 0.12);
  --shadow: 0 24px 60px rgba(24, 49, 83, 0.16);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 203, 90, 0.55), transparent 24%),
    radial-gradient(circle at top right, rgba(104, 185, 230, 0.4), transparent 20%),
    linear-gradient(180deg, #fffaf4 0%, #fff1de 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(24, 49, 83, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 49, 83, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.4;
}

.page-shell {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.page-hero {
  margin-bottom: 28px;
  padding: 24px 28px;
  border: 3px solid rgba(24, 49, 83, 0.08);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 248, 239, 0.95));
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.page-hero h1 {
  margin: 10px 0 12px;
  font-size: clamp(2.3rem, 4vw, 4.4rem);
  line-height: 0.95;
}

.hero-copy {
  margin: 0;
  max-width: 66ch;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.widget-layout {
  display: block;
}

.viewer-panel {
  border: 3px solid rgba(24, 49, 83, 0.08);
  border-radius: var(--radius-xl);
  background: var(--card);
  box-shadow: var(--shadow);
}

.viewer-panel {
  padding: 24px;
}

.slide-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 22px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top left, rgba(255, 203, 90, 0.3), transparent 28%),
    radial-gradient(circle at bottom right, rgba(239, 92, 132, 0.2), transparent 24%),
    linear-gradient(180deg, #fffefb 0%, #fff6e9 100%);
  border: 3px solid rgba(24, 49, 83, 0.08);
}

.slide-card.is-animating {
  animation: card-pop 420ms ease;
}

@keyframes card-pop {
  0% {
    transform: translateY(10px) scale(0.985);
    opacity: 0.35;
  }

  100% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.image-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 360px;
  padding: 18px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(223, 242, 255, 0.75)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 248, 239, 0.9));
  border: 2px solid rgba(24, 49, 83, 0.08);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.image-frame:hover,
.image-frame:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(104, 185, 230, 0.5);
  box-shadow: 0 16px 32px rgba(24, 49, 83, 0.12);
  outline: none;
}

.slide-card.is-scanning .image-frame {
  animation: scan-pulse 560ms ease-in-out infinite alternate;
}

@keyframes scan-pulse {
  0% {
    transform: scale(0.994);
    box-shadow: 0 0 0 rgba(104, 185, 230, 0);
  }

  100% {
    transform: scale(1.008);
    box-shadow: 0 0 0 12px rgba(104, 185, 230, 0.12);
  }
}

#word-image {
  width: min(100%, 420px);
  max-height: 360px;
  object-fit: contain;
}

.image-fallback {
  width: 100%;
  height: 100%;
}

.slide-copy {
  position: relative;
  min-height: 170px;
}

.answer-toolbar {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 1;
}

.reveal-button {
  cursor: pointer;
  padding: 12px 16px;
  border: 0;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--berry), #d94672);
  color: white;
  font: inherit;
  font-weight: 800;
  box-shadow: 0 10px 20px rgba(239, 92, 132, 0.24);
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.reveal-button:hover,
.reveal-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 24px rgba(239, 92, 132, 0.3);
}

.answer-details {
  min-height: 170px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 16px;
  text-align: center;
  transition: opacity 180ms ease;
}

.answer-details.is-hidden {
  opacity: 0;
}

.answer-details.is-hidden > * {
  visibility: hidden;
}

.phonics-pill {
  display: inline-flex;
  align-items: center;
  margin: 0 0 12px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(151, 196, 108, 0.2);
  border: 2px solid rgba(151, 196, 108, 0.28);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.word-title {
  margin: 0 0 14px;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 0.9;
}

.letter-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.letter-chip {
  min-width: 58px;
  padding: 12px 16px;
  border-radius: 18px;
  border: 2px solid rgba(24, 49, 83, 0.08);
  background: rgba(255, 255, 255, 0.95);
  font-size: 2.05rem;
  font-weight: 700;
  text-align: center;
  text-transform: lowercase;
}

.letter-chip.is-vowel {
  background: rgba(255, 203, 90, 0.4);
  border-color: rgba(255, 203, 90, 0.7);
}

.control-button {
  cursor: pointer;
  padding: 14px 16px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(180deg, var(--ink), #102743);
  color: white;
  font: inherit;
  font-weight: 800;
  box-shadow: 0 12px 24px rgba(24, 49, 83, 0.18);
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.control-button:hover,
.control-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(24, 49, 83, 0.24);
}

.control-button:focus-visible,
.reveal-button:focus-visible,
.source-link:focus-visible,
#speed-input:focus-visible {
  outline: 3px solid rgba(104, 185, 230, 0.8);
  outline-offset: 3px;
}

.control-button:disabled,
.reveal-button:disabled {
  cursor: wait;
  opacity: 0.6;
  transform: none;
  box-shadow: none;
}

body[data-embed="true"] .page-hero {
  display: none;
}

body[data-controls="false"] .answer-toolbar {
  display: none;
}

body[data-embed="true"] .page-shell {
  max-width: none;
  padding: 0;
}

body[data-embed="true"] .viewer-panel {
  border-radius: 0;
}

body[data-embed="true"] .widget-layout {
  grid-template-columns: 1fr;
}

@media (max-width: 920px) {
  .viewer-actions {
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 18px 14px 28px;
  }

  .page-hero,
  .viewer-panel {
    padding: 18px;
  }

  .image-frame {
    min-height: 280px;
  }

  .letter-chip {
    min-width: 52px;
  }
}