:root {
  --primary-color: #e60012;
  --text-color: #333;
  --bg-color: #f5f5f5;
  --button-hover: #cc0010;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-color);
}

.viewer-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.viewer-header {
  background-color: white;
  padding: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-buttons {
  display: flex;
  justify-content: center;
}

.download-btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s;
  background-color: var(--primary-color);
  color: white;
}

.download-btn:hover {
  background-color: var(--button-hover);
}

#pdf-viewer {
  flex: 1;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  background-color: var(--bg-color);
  padding: 0;
}

#magazine {
  position: relative;
  width: 100%;
  height: 100%;
  margin: 0;
  background: white;
}

#magazine .page {
  background-color: white;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

#magazine canvas {
  max-height: 100%;
  width: auto;
  object-fit: contain;
}

/* 페이지 그림자 효과 */
#magazine .hard {
  background: white !important;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

/* 첫/마지막 페이지 스타일 */
#magazine .page.first,
#magazine .page.last {
  background: #fff;
}

/* 페이지 넘김 효과용 그라데이션 */
#magazine .gradient {
  background: -webkit-gradient(linear, left top, right top, 
    color-stop(0.95, rgba(0,0,0,0)), 
    color-stop(1, rgba(0,0,0,0.2))
  );
}

.viewer-controls {
  background-color: white;
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  box-shadow: 0 -2px 4px rgba(0,0,0,0.1);
}

.control-btn {
  padding: 0.5rem 1rem;
  border: 1px solid #ddd;
  background-color: white;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.control-btn:hover {
  background-color: #f0f0f0;
}

.page-info {
  font-size: 1rem;
  color: var(--text-color);
}

#turn-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  background: white;
}

#turn-container .page {
  background: white;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

#turn-container canvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* turn.js 관련 스타일 */
.turn-page-wrapper {
  background: transparent !important;
}

.turn-page {
  background: transparent !important;
}

#loading-indicator {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  pointer-events: none;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(243, 243, 243, 0.8);
  border-top: 5px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-text,
.loading-progress {
  text-shadow: 0 0 5px white;
  background: rgba(255, 255, 255, 0.8);
  padding: 5px 10px;
  border-radius: 4px;
}

.loading-text {
  margin-top: 1rem;
  color: var(--text-color);
  font-size: 1.1rem;
}

.loading-progress {
  margin-top: 0.5rem;
  font-size: 1.2rem;
  color: var(--primary-color);
  font-weight: bold;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}