.nahvac-pdf-flipbook {
  border: 1px solid #d8dee8;
  border-radius: 12px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(17, 24, 39, 0.08);
  margin: 14px 0;
}

.nahvac-pdf-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 14px;
  background: #f6f8fb;
  border-bottom: 1px solid #e5ebf3;
}

.nahvac-pdf-title {
  font-weight: 600;
  color: #16324f;
}

.nahvac-pdf-download {
  text-decoration: none;
  color: #ffffff;
  background: #0098d1;
  border: 1px solid #0098d1;
  border-radius: 7px;
  padding: 6px 10px;
  font-size: 13px;
}

.nahvac-pdf-stage {
  background: #eef3f8;
  min-height: var(--nahvac-pdf-height, 860px);
  height: var(--nahvac-pdf-height, 860px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow: auto;
  padding: 16px 12px 12px;
  box-sizing: border-box;
}

.nahvac-pdf-canvas {
  width: auto;
  height: auto;
  max-width: 100%;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.18);
  background: #ffffff;
}

.nahvac-pdf-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px 12px;
  border-top: 1px solid #e5ebf3;
  background: #ffffff;
}

.nahvac-btn {
  border: 1px solid #c5d2e4;
  background: #f7f9fc;
  color: #223b59;
  border-radius: 6px;
  padding: 5px 10px;
  font-size: 13px;
  cursor: pointer;
}

.nahvac-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.nahvac-page-label {
  font-size: 13px;
  color: #425a76;
}

.nahvac-page-input {
  width: 70px;
  border: 1px solid #c5d2e4;
  border-radius: 6px;
  padding: 4px 6px;
  font-size: 13px;
}

.nahvac-pdf-flipbook-error {
  border: 1px solid #f3c2c2;
  background: #fff3f3;
  color: #8b1e1e;
  padding: 10px 12px;
  border-radius: 8px;
}

.nahvac-manuals-split {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 16px;
  margin-top: 14px;
  align-items: start;
}

.nahvac-manuals-dir {
  border: 1px solid #d8dee8;
  border-radius: 10px;
  background: #f8fbff;
  padding: 10px;
  max-height: calc(var(--nahvac-pdf-height, 860px) + 74px);
  overflow: auto;
}

.nahvac-manuals-dir,
.nahvac-manuals-dir * {
  font-size: 12px;
}

.nahvac-manuals-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nahvac-manual-group-title {
  margin: 8px 0 2px;
  font-size: 11px;
  line-height: 1.25;
  font-weight: 600;
  color: #5a6f8a;
  text-transform: none;
}

.nahvac-manual-item {
  text-align: left;
  border: 1px solid #cfdaea;
  border-radius: 8px;
  background: #ffffff;
  color: #1f3856;
  font-size: 12px;
  line-height: 1.25;
  padding: 7px 9px;
  cursor: pointer;
}

.nahvac-manual-item:hover {
  border-color: #0098d1;
}

.nahvac-manual-item.is-active {
  background: #e8f4fb;
  border-color: #0098d1;
  color: #0f2f52;
  font-weight: 600;
}

.nahvac-manuals-viewer {
  min-width: 0;
}

.nahvac-manuals-viewer .nahvac-pdf-flipbook {
  margin-top: 0;
}

@media (max-width: 980px) {
  .nahvac-manuals-split {
    grid-template-columns: 1fr;
  }

  .nahvac-manuals-dir {
    max-height: 280px;
  }
}

@media (max-width: 767px) {
  .nahvac-pdf-stage {
    min-height: 70vh;
    height: 70vh;
  }
}