/* ==========================================================================
   E-paper magazine viewer — main page + numbered page strip + thumbnail rail
   ========================================================================== */

.magazine-viewer {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  max-width: 100%;
  font-family: var(--hm-font, "PT Sans", "Open Sans", sans-serif);
  margin: 10px 0 30px;
  overflow-x: hidden;
}

/* ---------- Main page ---------- */

.magazine-viewer__main {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 100%;
  background: #fff;
  border: 1px solid #e2e5eb;
}

.magazine-viewer__page-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  background: var(--hm-navy, #14213d);
  padding: 8px;
}

.magazine-viewer__nav-btn {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, .3);
  background: transparent;
  color: #fff;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  transition: background .15s ease-in-out;
}

.magazine-viewer__nav-btn:hover {
  background: var(--hm-navy-light, #223357);
}

.magazine-viewer__page-strip {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 2px;
}

.magazine-viewer__page-strip::-webkit-scrollbar {
  height: 4px;
}

.magazine-viewer__page-strip::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, .25);
}

.magazine-viewer__page-btn {
  flex: 0 0 auto;
  min-width: 32px;
  height: 30px;
  padding: 0 8px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, .25);
  background: transparent;
  color: #f2f3f5;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s ease-in-out, border-color .15s ease-in-out;
}

.magazine-viewer__page-btn:hover:not(.is-active) {
  background: var(--hm-navy-light, #223357);
}

.magazine-viewer__page-btn.is-active {
  background: #2f6fed;
  border-color: #2f6fed;
  color: #fff;
}

.magazine-viewer__canvas-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 320px;
  max-width: 100%;
  padding: 18px;
  background: #e9edf3;
  overflow: auto;
  box-sizing: border-box;
}

.magazine-viewer__canvas {
  max-width: 100%;
  height: auto;
  background: #fff;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .16);
}

.magazine-viewer__loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5a6472;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .3px;
  background: rgba(233, 237, 243, .85);
}

.magazine-viewer__error {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  color: #b3202a;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  padding: 20px;
}

/* ---------- Sidebar: all pages ---------- */

.magazine-viewer__sidebar {
  flex: 0 0 260px;
  min-width: 0;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  border: 1px solid #e2e5eb;
  background: #fff;
  max-height: 780px;
}

.magazine-viewer__sidebar-header {
  background: var(--hm-navy, #14213d);
  color: #fff;
  text-align: center;
  padding: 11px 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .6px;
  text-transform: uppercase;
}

.magazine-viewer__thumbs {
  flex: 1 1 auto;
  min-width: 0;
  overflow-y: auto;
  padding: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-content: start;
}

.magazine-viewer__thumb {
  position: relative;
  min-width: 0;
  cursor: pointer;
  border: 2px solid transparent;
  background: #f2f4f7;
  line-height: 0;
  transition: border-color .15s ease-in-out;
}

.magazine-viewer__thumb:hover {
  border-color: rgba(20, 33, 61, .3);
}

.magazine-viewer__thumb.is-active {
  border-color: var(--hm-gold, #c8a24a);
}

.magazine-viewer__thumb canvas {
  display: block;
  width: 100%;
  height: auto;
}

.magazine-viewer__thumb-badge {
  position: absolute;
  top: 5px;
  left: 5px;
  background: #c0392b;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 2px;
  line-height: 1.5;
}

/* ---------- Responsive ---------- */

@media (max-width: 767px) {
  .magazine-viewer {
    flex-direction: column;
  }

  .magazine-viewer__sidebar {
    flex-basis: auto;
    width: 100%;
    max-height: 360px;
  }

  .magazine-viewer__thumbs {
    grid-template-columns: repeat(3, 1fr);
  }

  .magazine-viewer__canvas-wrap {
    padding: 12px;
  }
}

@media (max-width: 420px) {
  .magazine-viewer__thumbs {
    grid-template-columns: repeat(2, 1fr);
  }
}