/* Bitcoin-Quiz Orange Theme */
:root {
  --bitcoin-orange: #f7931a;
  --bitcoin-dark: #1e1e1e;
  --bitcoin-light: #ffffff;
  --bitcoin-grey: #2b2b2b;
  --bitcoin-border: #444;
  --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html, body {
  max-width: 100%;
  overflow-x: hidden;
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bitcoin-dark);
  color: var(--bitcoin-light);
  font-family: var(--font-family);
  min-height: 100vh;
}

.main-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  flex: 1;
  margin: 40px auto 0 auto;
  background-color: var(--bitcoin-grey);
  border-radius: 16px;
  padding: 30px;
  width: 90%;
  max-width: 700px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.6);
  border: 1px solid var(--bitcoin-border);
}

h1, h2, h3 {
  color: var(--bitcoin-orange);
  text-align: center;
}

label {
  display: block;
  margin-top: 20px;
  font-weight: bold;
  color: var(--bitcoin-light);
}

select, button {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  background-color: var(--bitcoin-orange);
  border: none;
  border-radius: 8px;
  color: var(--bitcoin-dark);
  font-weight: bold;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.2s ease;
}

select {
  background-color: var(--bitcoin-light);
  color: var(--bitcoin-dark);
}

button:hover {
  background-color: #e67e00;
}

#question-container {
  margin-top: 20px;
}

#answers button {
  margin-bottom: 10px;
  background-color: #333;
  color: white;
  border: 1px solid var(--bitcoin-border);
}

#answers button.correct {
  background-color: #2ecc71;
}

#answers button.incorrect {
  background-color: #e74c3c;
}

#result {
  margin-top: 20px;
  padding: 15px;
  background-color: #222;
  border: 1px solid var(--bitcoin-orange);
  border-radius: 10px;
  font-size: 1.2rem;
  color: var(--bitcoin-orange);
  text-align: center;
}

.progress {
  margin-top: 20px;
  height: 10px;
  width: 100%;
  background-color: #555;
  border-radius: 5px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background-color: var(--bitcoin-orange);
  width: 0%;
  transition: width 0.3s ease;
}

footer {
  text-align: center;
  color: #888;
  padding: 1em;
  font-size: 0.8rem;
}

footer a {
  color: var(--bitcoin-orange);
  text-decoration: none;
  margin: 0 0.5em;
  display: inline-block;
}

.quiz-logo {
  display: block;
  margin: 0 auto 10px auto; /* zentriert + Abstand nach unten */
  max-width: 100px;         /* je nach Geschmack */
  height: auto;
}