:root {
  --color-primary: #000000;    /* nero */
  --color-accent: #d90b2d;     /* rosso */
  --color-light: #edf1ff;      /* grigio chiaro */
  --color-bg: #ffffff;         /* bianco puro */
  --color-accent-alt: #fcfafa; /* bianco */
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--color-primary);
  color: var(--color-light);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 90%;
  max-width: 700px;
  margin: auto;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  text-align: center;
  padding: 2rem 0 1rem;
  color: var(--color-accent);
}

.header h1 {
  font-size: 2.5rem;
  margin: 0;
}

.header .subtitle {
  font-size: 1.2rem;
  margin-top: 0.25rem;
  letter-spacing: 2px;
  color: var(--color-accent-alt);
}

.main {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 0 1rem;
}

.question-card {
  background-color: var(--color-bg);
  color: var(--color-primary);
  border-radius: 25px;
  box-shadow: 0 8px 15px rgba(10, 25, 47, 0.3);
  padding: 2rem;
  max-width: 600px;
  width: 100%;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  transition: transform 0.5s ease, opacity 0.5s ease;
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 600px;
}

.btn {
  cursor: pointer;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 0.75rem 2rem;
  border: none;
  box-shadow: 0 4px 12px rgba(100, 255, 218, 0.4);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  width: 100%;
  max-width: 400px;
}

.btn--primary {
  background-color: var(--color-bg);
  color: var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 6px 18px rgba(255, 111, 97, 0.6);
}

.counter {
  font-weight: 500;
  color: var(--color-light);
}

.footer {
  text-align: center;
  padding: 1rem 0;
  font-size: 0.9rem;
  color: var(--color-accent-alt);
  background-color: var(--color-primary);
  box-shadow: inset 0 1px 0 rgba(255, 111, 97, 0.2);
}

/* Responsive adjustments */
@media (max-width: 480px) {
  .header h1 {
    font-size: 1.8rem;
  }
  .header .subtitle {
    font-size: 1rem;
  }
  .btn {
    font-size: 1rem;
    padding: 0.6rem 1.5rem;
  }
  .question-card {
    padding: 1.5rem;
    min-height: 150px;
  }
}