html, body {
  margin: 0;
  padding: 0;
  background: #0d0d0d;
  font-family: 'Orbitron', sans-serif;
  color: #d0d0d0;
  font-size: 15px;
  letter-spacing: 0.5px;
}

.back-button {
  display: inline-block;
  margin: 32px auto;
  font-family: 'Orbitron', sans-serif;
  font-size: 15px;
  color: #6c8e92;
  background: transparent;
  border: 1px solid transparent;
  padding: 6px 16px;
  border-radius: 6px;
  text-decoration: none;
  letter-spacing: 0.8px;
  transition: all 0.3s ease;
  opacity: 0.6;
  text-align: center;
}

.back-button:hover {
  border-color: var(--color-lightblue);
  color: var(--color-lightblue);
  opacity: 1;
  cursor: pointer;
}

.hint {
  font-size: 12px;
  color: #444;
}

#unlock {
  box-sizing: border-box;
  background-color: #111;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 24px;
  max-width: 400px;
  margin: 80px auto 40px;
  text-align: center;
  display: flex;
  flex-direction: column; 
  align-items: center; 
  justify-content: center;
}

#unlock input[type="password"] {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 12px auto;
  padding: 8px;
  border: none;
  background-color: #222;
  color: #ccc;
  border-bottom: 1px solid #555;
  font-family: inherit;
  box-sizing: border-box;
}

#unlock button {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 16px auto;
  padding: 8px 18px;
  background-color: transparent;
  color: var(--color-lightblue);
  border: 1px solid var(--color-lightblue);
  border-radius: 6px;
  font-family: 'Orbitron', sans-serif;
  cursor: pointer;
  transition: all 0.3s ease;
  box-sizing: border-box;
}

#unlock button:hover {
  background-color: var(--color-lightblue);
  color: #000;
}

#error-msg {
  margin-top: 10px;
  color: #ff6d6d;
  font-size: 13px;
  display: none;
}

#secret-content {
  width: 100%;
  max-width: 700px;
  margin: 20px auto;
  margin-top: 80px;
  padding: 0 40px;
  box-sizing: border-box;
  line-height: 1.9;
}

#secret-content h2 {
  font-size: 20px;
  margin-bottom: 20px;
  color: #96d3d7;
}

#secret-content p {
  margin-bottom: 28px;
}

@media (max-width: 450px) {
  body {
    font-size: 14px;
  }

  #unlock {
    margin: 60px auto 40px;
    padding: 16px;
    max-width: 90%;
  }

  #unlock input[type="password"],
  #unlock button {
    font-size: 16px;
  }

  #secret-content h2 {
    font-size: 18px;
  }

  #secret-content p {
    font-size: 14px;
    line-height: 1.6;
  }
}

@media (max-width: 700px) {
    #secret-content {
    margin: 40px auto;
    margin-bottom: 20px;
    padding: 0 40px;
    max-width: 95%;
  }
  
  .back-button {
  margin: 40px auto;
  margin-top: 0px;
}
}

/* @media (prefers-color-scheme: light) {
  html, body {
    background: #ffffff;
    color: #000000;
  }

  .back-button:hover {
    border-color: #5db14e;
    color: #5db14e;
  }

    #unlock {
        background-color: #f5f5f5;
    }

    #unlock input[type="password"] {
        background-color: #d6d6d6;
        color: #222;
        border-bottom: #acacac;
    }

    #unlock button {
        color: #5db14e;
        border: #5db14e;
    }

    #unlock button:hover {
        background-color: #5db14e;
        color: #fff;
    }

    #secret-content h2 {
        color: #5db14e;
    }

} */