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

/* Body */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #ffffff;
  color: #111111;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  text-align: center;
  padding: 2rem;
}

/* Container */
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

/* Headings */
h1 {
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Image Carousel */
.carousel-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

/* Image Carousel Wrapper */
.carousel-image-wrapper {
  width: 800px;
  height: 500px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  border-radius: 12px;
  background-color: transparent; /* changed from #f0f0f0 to transparent */
}

.carousel-image-wrapper img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: all 0.3s ease-in-out;
}

/* Metronome Carousel */
.tempo-carousel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

#tempo-list {
  display: flex;
  list-style: none;
  gap: 1rem;
  padding: 0;
  margin: 0;
  width: 300px;
  justify-content: center;
}

#tempo-list li {
  min-width: 80px;
  padding: 0.5rem 1rem;
  text-align: center;
  font-weight: 500;
  cursor: pointer;
  color: #bbb;
  flex-shrink: 0;
  transition: all 0.3s ease-in-out;
}

#tempo-list li.center {
  color: #111;
  font-weight: 700;
  transform: scale(1.2);
}

#tempo-list li.adjacent {
  color: #999;
  transform: scale(1.05);
}

/* Carousel Buttons */
.carousel-btn {
  font-size: 2rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  color: #111;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  background: transparent;
}

.carousel-btn:hover {
  background: rgba(0,0,0,0.1);
  transform: scale(1.15);
}

/* Play / Stop Buttons Container */
.controls {
  display: flex;             /* make buttons horizontal */
  justify-content: center;   
  align-items: center;
  gap: 1rem;                /* space between buttons */
  margin-top: 1rem;
}


/* Play / Stop Buttons */
#play-btn, #stop-btn {
  width: 70px;
  height: 45px;
  font-size: 1.3rem;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #000;
  border: none;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  transition: all 0.3s ease-in-out;
  margin: 0 0.5rem;
}

#play-btn:hover, #stop-btn:hover {
  background: #bbb;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transform: scale(1.1);
}