* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea, #764ba2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #2d2d44;
  padding: 1rem;
}

.game {
  background: #ffffff;
  border-radius: 16px;
  padding: 2rem 2.5rem;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  text-align: center;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 2rem;
  color: #4a3f8a;
}

.subtitle {
  margin: 0 0 1.5rem;
  color: #6b6b85;
}

.status {
  display: flex;
  justify-content: space-between;
  background: #f1f0fb;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.question {
  font-size: 2.25rem;
  font-weight: bold;
  margin: 1rem 0 1.5rem;
  color: #2d2d44;
}

#answerForm {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}

.answer-input {
  flex: 1;
  padding: 0.75rem 1rem;
  font-size: 1.1rem;
  border: 2px solid #d4d2ea;
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s;
}

.answer-input:focus {
  border-color: #764ba2;
}

.btn {
  background: #764ba2;
  color: #fff;
  border: none;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:hover {
  background: #5d3a82;
}

.btn:active {
  transform: scale(0.97);
}

.btn-secondary {
  background: #e2e0f1;
  color: #4a3f8a;
  margin-top: 1rem;
}

.btn-secondary:hover {
  background: #d4d2ea;
}

.end-screen {
  padding: 1rem 0;
}

.end-screen h2 {
  font-size: 1.75rem;
  color: #4a3f8a;
  margin-bottom: 0.5rem;
}

.feedback {
  margin-top: 1rem;
  min-height: 1.5rem;
  font-weight: 600;
}

.feedback.correct {
  color: #1f9d55;
}

.feedback.wrong {
  color: #c53030;
}

.win-screen {
  padding: 1rem 0;
}

.win-screen h2 {
  font-size: 2rem;
  color: #1f9d55;
  margin-bottom: 0.5rem;
}

.hidden {
  display: none;
}