:root {
  --bg-main: #020202;
  --panel: #090909;
  --panel-strong: #111111;
  --text-main: #ffffff;
  --text-muted: #9a9a9a;
  --accent: #ffffff;
  --accent-deep: #d9d9d9;
  --line: rgba(255, 255, 255, 0.08);
  --success: #7dff9c;
  --danger: #ff7474;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
  --radius-lg: 28px;
  --radius-md: 20px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.08), transparent 24%),
    var(--bg-main);
}

body {
  min-height: 100vh;
}

button {
  font: inherit;
}

.app-shell {
  width: min(100%, 480px);
  margin: 0 auto;
  padding: 20px 16px 32px;
}

.hero {
  padding: 14px 6px 18px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  color: #7e7e7e;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.1rem, 9vw, 3.1rem);
  line-height: 0.95;
}

.hero-copy {
  margin: 12px 0 0;
  line-height: 1.5;
  color: var(--text-muted);
}

.game-panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 16px;
}

.status-bar,
.prompt-card,
.feedback-card,
.result-card {
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.status-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 14px 16px;
}

.status-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.prompt-card,
.feedback-card,
.result-card,
.silhouette-card,
.action-buttons,
.primary-button {
  margin-top: 14px;
}

.prompt-card,
.feedback-card,
.result-card {
  padding: 18px;
}

.prompt-badge {
  display: inline-block;
  margin-bottom: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent-deep);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.prompt-card h2,
.result-card h2 {
  margin: 0;
  font-size: 1.14rem;
  line-height: 1.4;
}

.prompt-hint,
.feedback-text,
.result-rate,
.result-grade {
  margin: 10px 0 0;
  line-height: 1.5;
  color: var(--text-muted);
}

.silhouette-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  border-radius: 999px;
  background: #050505;
  padding: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.silhouette-card::before {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: 999px;
  background: #ffffff;
}

.silhouette-image {
  position: relative;
  z-index: 1;
  display: block;
  width: 58%;
  height: 58%;
  object-fit: contain;
  object-position: center;
  background: transparent;
  filter: brightness(0) saturate(0) contrast(1.35);
  transform: scale(1);
}

.silhouette-image.is-revealing {
  animation: silhouette-pop 1s ease-out forwards;
}

.silhouette-image.is-original {
  filter: none;
  width: 74%;
  height: 74%;
}

.silhouette-cover {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.9);
  color: #ffffff;
  text-align: center;
  padding: 20px;
  z-index: 2;
}

.silhouette-cover p {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.action-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.choice-button,
.primary-button {
  border: 0;
  border-radius: 999px;
  min-height: 60px;
  padding: 18px;
  font-size: 1rem;
  font-weight: 800;
}

.choice-button,
.primary-button {
  background: #ffffff;
  color: #050505;
}

.choice-button.secondary {
  background: #232323;
  color: #ffffff;
}

.feedback-card.is-correct .feedback-title {
  color: var(--success);
}

.feedback-card.is-wrong .feedback-title {
  color: var(--danger);
}

.feedback-title,
.result-score {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 800;
}

.feedback-text {
  font-size: 0.95rem;
}

.result-score {
  font-size: 1.08rem;
}

@keyframes silhouette-pop {
  0% {
    opacity: 0.45;
    transform: scale(0.9);
  }

  45% {
    opacity: 1;
    transform: scale(1.04);
  }

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

@media (min-width: 481px) {
  .app-shell {
    padding-top: 28px;
  }
}