/* ===== Space Explorer — kid-friendly space theme ===== */

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

:root {
  --bg-deep: #0b0d2a;
  --bg-card: rgba(255, 255, 255, 0.07);
  --text: #f4f6ff;
  --text-soft: #c3c9ec;
  --accent: #ffd23f;
  --accent2: #9b8cff;
  --good: #4caf78;
  --bad: #e5616a;
}

html {
  font-size: 17px;
}

body {
  font-family: "Comic Sans MS", "Chalkboard SE", "Segoe UI", sans-serif;
  background: radial-gradient(ellipse at top, #1b1f4b 0%, var(--bg-deep) 60%, #05061a 100%);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Twinkling stars background */
#stars-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.star {
  position: absolute;
  background: #fff;
  border-radius: 50%;
  animation: twinkle 3s infinite ease-in-out;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}

.screen {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  min-height: 100vh;
}

.hidden {
  display: none !important;
}

/* ===== Welcome screen ===== */
#welcome-screen {
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-card {
  text-align: center;
  background: var(--bg-card);
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  padding: 50px 40px;
  max-width: 480px;
  width: 100%;
  backdrop-filter: blur(6px);
}

.rocket-big {
  font-size: 5rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.welcome-card h1 {
  font-size: 2.6rem;
  margin: 10px 0 16px;
  background: linear-gradient(90deg, var(--accent), #ff8c42, var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.welcome-text {
  font-size: 1.25rem;
  color: var(--text-soft);
  margin-bottom: 24px;
}

#name-input {
  width: 100%;
  padding: 16px 20px;
  font-size: 1.3rem;
  font-family: inherit;
  text-align: center;
  border-radius: 50px;
  border: 3px solid var(--accent2);
  background: rgba(255, 255, 255, 0.95);
  color: #222;
  outline: none;
  margin-bottom: 20px;
}

#name-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(255, 210, 63, 0.4);
}

/* ===== Buttons ===== */
.big-btn {
  display: inline-block;
  font-family: inherit;
  font-size: 1.25rem;
  font-weight: bold;
  color: #1b1f4b;
  background: linear-gradient(135deg, var(--accent), #ffb347);
  border: none;
  border-radius: 50px;
  padding: 16px 36px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  box-shadow: 0 6px 18px rgba(255, 210, 63, 0.35);
}

.big-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 8px 26px rgba(255, 210, 63, 0.55);
}

.big-btn.secondary {
  background: linear-gradient(135deg, var(--accent2), #6e7bff);
  color: #fff;
  box-shadow: 0 6px 18px rgba(155, 140, 255, 0.35);
  margin-left: 10px;
}

.small-btn {
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-soft);
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  padding: 8px 20px;
  cursor: pointer;
}

.small-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.back-btn {
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: bold;
  color: var(--text);
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  padding: 10px 24px;
  cursor: pointer;
  margin-bottom: 20px;
}

.back-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ===== Home screen ===== */
.top-bar {
  text-align: center;
  margin-bottom: 30px;
}

.top-bar h1 {
  font-size: 2.4rem;
  background: linear-gradient(90deg, var(--accent), #ff8c42, var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  color: var(--text-soft);
  font-size: 1.15rem;
  margin-top: 6px;
}

.section-title {
  font-size: 1.6rem;
  margin: 34px 0 16px;
  color: var(--accent);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 18px;
}

.space-card {
  background: var(--bg-card);
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  padding: 26px 16px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.space-card:hover {
  transform: translateY(-6px) scale(1.03);
  border-color: var(--card-color, var(--accent));
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.space-card .card-emoji {
  font-size: 3.4rem;
  display: block;
  margin-bottom: 10px;
}

.space-card h3 {
  font-size: 1.25rem;
  margin-bottom: 4px;
  color: var(--card-color, var(--text));
}

.space-card p {
  font-size: 0.92rem;
  color: var(--text-soft);
}

/* Quiz banner on home */
.quiz-banner {
  margin-top: 46px;
  text-align: center;
  background: linear-gradient(135deg, rgba(155, 140, 255, 0.25), rgba(255, 140, 66, 0.2));
  border: 2px dashed var(--accent2);
  border-radius: 28px;
  padding: 34px 20px;
}

.quiz-banner h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.quiz-banner p {
  color: var(--text-soft);
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.footer {
  text-align: center;
  margin-top: 40px;
}

/* ===== Detail screen ===== */
.detail-card {
  background: var(--bg-card);
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  padding: 40px 34px;
  text-align: center;
  backdrop-filter: blur(6px);
}

.detail-emoji {
  font-size: 6rem;
  animation: float 3.5s ease-in-out infinite;
}

.detail-card h1 {
  font-size: 2.5rem;
  margin: 12px 0 4px;
  color: var(--card-color, var(--accent));
}

.detail-type {
  font-size: 1.2rem;
  color: var(--text-soft);
  margin-bottom: 22px;
}

.speak-btn {
  margin-bottom: 26px;
}

.speak-btn.speaking {
  background: linear-gradient(135deg, var(--good), #7fdbab);
  animation: pulse 1.2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.detail-description {
  font-size: 1.3rem;
  line-height: 1.8;
  text-align: left;
  color: var(--text);
  max-width: 760px;
  margin: 0 auto 30px;
}

.facts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  max-width: 760px;
  margin: 0 auto;
}

.fact-box {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.fact-box .fact-label {
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 6px;
}

.fact-box .fact-value {
  font-size: 1.05rem;
  font-weight: bold;
}

/* ===== Quiz screen ===== */
.quiz-card, .results-card {
  background: var(--bg-card);
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  padding: 40px 34px;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  backdrop-filter: blur(6px);
}

.quiz-progress {
  font-size: 1.05rem;
  color: var(--accent);
  margin-bottom: 18px;
  font-weight: bold;
}

#quiz-question {
  font-size: 1.6rem;
  margin-bottom: 26px;
  line-height: 1.5;
}

.quiz-answers {
  display: grid;
  gap: 14px;
}

.answer-btn {
  font-family: inherit;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  padding: 16px 20px;
  cursor: pointer;
  transition: transform 0.12s, border-color 0.12s;
}

.answer-btn:hover:not(:disabled) {
  transform: scale(1.02);
  border-color: var(--accent);
}

.answer-btn.correct {
  background: var(--good);
  border-color: var(--good);
  color: #fff;
}

.answer-btn.wrong {
  background: var(--bad);
  border-color: var(--bad);
  color: #fff;
}

.answer-btn:disabled {
  cursor: default;
  opacity: 0.85;
}

.quiz-feedback {
  font-size: 1.3rem;
  font-weight: bold;
  margin: 20px 0;
  min-height: 1.6em;
}

/* ===== Results screen ===== */
#results-screen {
  display: flex;
  align-items: center;
  justify-content: center;
}

.results-card h1 {
  font-size: 2.2rem;
  margin: 10px 0;
}

.results-message {
  font-size: 1.3rem;
  color: var(--text-soft);
  margin-bottom: 18px;
  line-height: 1.6;
}

.results-score {
  font-size: 3rem;
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 28px;
}

/* ===== Game Zone on home ===== */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
  max-width: 700px;
  margin: 0 auto 24px;
}

.game-card {
  background: rgba(255, 255, 255, 0.09);
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  padding: 22px 14px;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s;
}

.game-card:hover {
  transform: translateY(-5px) scale(1.03);
  border-color: var(--accent);
}

.game-card .card-emoji {
  font-size: 2.8rem;
  display: block;
  margin-bottom: 8px;
}

.game-card h3 {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.game-card p {
  font-size: 0.9rem;
  color: var(--text-soft);
  margin: 0;
}

.game-hint {
  color: var(--text-soft);
  font-size: 1.1rem;
  margin-bottom: 16px;
}

/* ===== Memory Match ===== */
.memory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
}

.memory-card {
  font-family: inherit;
  font-size: 2.2rem;
  aspect-ratio: 1;
  border-radius: 18px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: linear-gradient(135deg, rgba(155, 140, 255, 0.35), rgba(91, 141, 239, 0.3));
  color: var(--text);
  cursor: pointer;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}

.memory-card:hover {
  transform: scale(1.05);
}

.memory-card.flipped {
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--accent);
}

.memory-card.matched {
  background: var(--good);
  border-color: var(--good);
  cursor: default;
  animation: pop 0.4s;
}

@keyframes pop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1); }
}

/* ===== Planet Parade ===== */
.order-line {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  padding: 14px;
  margin-bottom: 22px;
  min-height: 86px;
  flex-wrap: wrap;
}

.order-sun {
  font-size: 2.6rem;
}

.order-slots {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.order-placed {
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: pop 0.4s;
}

.order-placed span {
  font-size: 2rem;
}

.order-placed small {
  font-size: 0.72rem;
  color: var(--text-soft);
}

.order-pool {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}

.order-btn {
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: bold;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.12s, border-color 0.12s;
}

.order-btn span {
  font-size: 1.5rem;
}

.order-btn:hover {
  transform: scale(1.04);
  border-color: var(--accent);
}

.order-btn.shake {
  animation: shake 0.4s;
  border-color: var(--bad);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-7px); }
  75% { transform: translateX(7px); }
}

/* ===== Score history ===== */
.scores-card {
  text-align: left;
}

.scores-card h2,
.scores-card .game-hint {
  text-align: center;
}

.score-block {
  background: rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  padding: 18px 22px;
  margin-bottom: 16px;
}

.score-block h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.score-best {
  color: var(--accent);
  font-weight: bold;
  margin-bottom: 10px;
}

.score-empty {
  color: var(--text-soft);
}

.score-list {
  list-style: none;
}

.score-list li {
  padding: 5px 0;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  font-size: 1rem;
}

.score-date {
  display: inline-block;
  min-width: 70px;
  color: var(--text-soft);
  font-size: 0.9rem;
}

/* ===== Mobile ===== */
@media (max-width: 600px) {
  html { font-size: 15px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-card, .quiz-card, .results-card { padding: 28px 18px; }
  .big-btn.secondary { margin-left: 0; margin-top: 12px; }
}