body, html {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background-color: #6c3472;
}

header {
  background: linear-gradient(60deg, #300f33, #142135);
  height: 5vh;
  display: flex;
  justify-content: left;
  align-items: center;
}

#textHeader {
  color: #ffffff;
  font-family: "Segoe UI";
  font-size: 1.5vw;
  margin-left: 1.5vw;
}

#pdf-container {
  width: 100%;
  min-height: calc(100vh - 96px);
  display: flex;
  flex-direction: column;
  position: relative;
  background-color: #6c3472;
}

#pdf-viewer-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: auto;
  background-color: #6c3472;
  margin-top: 5vh;
}

#pdf-viewer {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  background-color: #6c3472;
  display: block;
  margin: 0 auto;
}

#pdf-controls {
  width: 100%;
  padding: 0 6rem;
  display: flex;
  gap: 10px;
  background-color: white;
  padding-top: 1rem;
  padding-bottom: 1rem;
  background-color: #6c3472;
}

#pdf-pagination-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  justify-content: center;
}

#pdf-pagination-controls button {
  width: 40px;
  min-height: 40px;
  background-color: #3b82f6cc;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.download-btn {
  padding: 8px 16px;
  background-color: rgba(239, 68, 68, 0.8);
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: "Segoe UI";
}

.download-btn:hover {
  background-color: #dc2626e6;
}

canvas {
  width: clamp(300px, 80vw, 1200px);
  height: clamp(300px, 80vh, 800px);
  margin: 0 auto;
  border: none;
}

canvas:fullscreen {
  width: 100vw;
  height: 100vh;
}

@media (max-width: 800px) {
  header {
    height: 8vh;
  }

  #textHeader {
    font-size: clamp(16px, 5vw, 22px);
    margin-left: 4vw;
  }

  #pdf-viewer {
    width: 100%;
    max-height: 60vh;
  }

  #pdf-controls {
    padding: 1rem;
    flex-direction: column;
    align-items: center;
  }

  #pdf-pagination-controls {
    width: 100%;
    margin-bottom: 1rem;
  }

  #pdf-pagination-controls button {
    width: 40px;
    min-height: 40px;
    font-size: 1rem;
  }

  .download-btn {
    padding: 12px 24px;
    font-size: 1rem;
  }
}