.stratford-assignments-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

.assignment-selector {
  margin-bottom: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.assignment-selector select,
.assignment-selector input {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  min-width: 200px;
  font-size: 14px;
}

.pdf-container {
  background: #f5f5f5;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.canvas-wrapper {
  position: relative;
  margin-bottom: 20px;
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  min-height: 400px;
}

#pdf-canvas {
  display: block;
  background: white;
}

.canvas-container {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  z-index: 1 !important;
}

.toolbar {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  padding: 10px;
  background: white;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.tool-group {
  display: flex;
  gap: 8px;
}

.tool-button {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  background: #2271b1;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
  font-size: 14px;
}

.tool-button:hover {
  background: #135e96;
}

.tool-button.active {
  background: #135e96;
}

.tool-button.submit {
  background: #46b450;
}

.tool-button.submit:hover {
  background: #389e44;
}

.tool-button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

.tool-button .dashicons {
  font-size: 18px;
  width: 18px;
  height: 18px;
}

/* Mobile Styles */
@media (max-width: 768px) {
  .assignment-selector {
    flex-direction: column;
  }
  
  .assignment-selector select,
  .assignment-selector input {
    width: 100%;
    min-width: unset;
  }

  .pdf-container {
    padding: 10px;
  }

  .toolbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: white;
    padding: 10px;
    margin-bottom: 15px;
    border-bottom: 1px solid #ddd;
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
  }

  .tool-group {
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 5px;
  }

  .tool-button {
    flex: 1;
    padding: 12px 8px;
    font-size: 14px;
    min-width: auto;
  }

  #zoom-in, #zoom-out {
    display: none;  /* Hide zoom buttons on mobile */
  }

  .canvas-wrapper {
    width: 100%;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-x pan-y pinch-zoom;
    background: #fff;
    position: relative;
  }

  #pdf-canvas {
    max-width: none;
    width: 100%;
    height: auto;
  }

  .canvas-container {
    touch-action: auto !important;
  }
}

/* Touch device optimizations */
@supports (-webkit-touch-callout: none) {
  .canvas-wrapper {
    -webkit-overflow-scrolling: touch;
  }
}