/* ── Viewer — thème sombre façon Calaméo ────────────────────────────────── */
:root {
  --v-bg:      #0f0f1a;
  --v-surface: #1a1a2e;
  --v-bar:     #16162a;
  --v-border:  rgba(255,255,255,.08);
  --v-accent:  #E72685;
  --v-text:    #e8e8f0;
  --v-muted:   #8888aa;
  --v-shadow:  0 20px 60px rgba(0,0,0,.7);
  --v-font:    'Nunito', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body.viewer-body {
  font-family: var(--v-font);
  background: var(--v-bg);
  color: var(--v-text);
  height: 100%; overflow: hidden;
}

/* ── Top bar ─────────────────────────────────────────────────────────────── */
.viewer-topbar {
  height: 56px;
  background: var(--v-bar);
  border-bottom: 1px solid var(--v-border);
  display: flex; align-items: center; gap: 1rem;
  padding: 0 1.25rem;
  flex-shrink: 0; position: relative; z-index: 200;
}

.viewer-logo {
  display: flex; align-items: center;
  text-decoration: none; flex-shrink: 0;
}
.viewer-logo img { height: 30px; width: auto; object-fit: contain; }

.viewer-divider {
  width: 1px; height: 24px;
  background: var(--v-border); flex-shrink: 0;
}

.viewer-title {
  flex: 1; font-size: .9rem; font-weight: 600; color: var(--v-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.viewer-actions { display: flex; align-items: center; gap: .4rem; flex-shrink: 0; }

.viewer-btn {
  display: flex; align-items: center; gap: .4rem;
  background: rgba(255,255,255,.07); border: 1px solid var(--v-border);
  cursor: pointer; color: var(--v-muted);
  font: 600 .8rem var(--v-font);
  padding: .4rem .8rem; border-radius: 7px;
  transition: all .15s; text-decoration: none; white-space: nowrap;
}
.viewer-btn:hover { background: rgba(255,255,255,.14); color: var(--v-text); border-color: rgba(255,255,255,.15); text-decoration: none; }
.viewer-btn--accent {
  background: rgba(231,38,133,.15); border-color: rgba(231,38,133,.3); color: #f472b6;
}
.viewer-btn--accent:hover { background: rgba(231,38,133,.25); color: #fff; }

/* ── Dropdowns ───────────────────────────────────────────────────────────── */
.dropdown { position: relative; }
.dropdown__menu {
  display: none; position: absolute; top: calc(100% + 8px); right: 0;
  background: #fff; color: #1e1426;
  border-radius: 12px; box-shadow: 0 12px 40px rgba(0,0,0,.25);
  min-width: 200px; overflow: hidden; z-index: 400;
  animation: dropIn .15s ease;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dropdown__menu--wide { min-width: 360px; }
.dropdown.open .dropdown__menu { display: block; }

.dropdown__menu-title {
  font-size: .7rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: .07em; color: #7a5470;
  padding: .75rem 1rem .4rem;
}
.dropdown__divider { border: none; border-top: 1px solid #f0d6e8; margin: .3rem 0; }

.dropdown__menu a,
.dropdown__menu button {
  display: flex; align-items: center; gap: .65rem;
  padding: .6rem 1rem; font-size: .875rem; font-weight: 600;
  color: #1e1426; text-decoration: none;
  background: none; border: none; cursor: pointer; width: 100%; text-align: left;
  transition: background .12s;
}
.dropdown__menu a:hover,
.dropdown__menu button:hover { background: #fdf0f6; color: #E72685; text-decoration: none; }

.dropdown__menu--wide { padding: .75rem; }
.embed-code {
  width: 100%; resize: none; font-family: monospace; font-size: .8rem;
  background: #fdf5f9; border: 1px solid #f0d6e8; border-radius: 8px;
  padding: .6rem; color: #1e1426; display: block;
}
.embed-copy-btn {
  display: flex; align-items: center; gap: .5rem; justify-content: center;
  margin-top: .6rem; width: 100%; padding: .5rem;
  background: linear-gradient(135deg,#E72685,#F06030,#FAC911);
  color: #fff; border: none; border-radius: 8px;
  font: 700 .85rem var(--v-font); cursor: pointer; transition: opacity .15s;
}
.embed-copy-btn:hover { opacity: .9; }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.viewer-toast {
  position: fixed; bottom: 70px; left: 50%; transform: translateX(-50%) translateY(12px);
  background: #1e1426; color: #fff; border: 1px solid var(--v-border);
  padding: .6rem 1.2rem; border-radius: 50px;
  font: 600 .85rem var(--v-font); display: flex; align-items: center; gap: .5rem;
  opacity: 0; transition: all .25s; pointer-events: none; z-index: 9999;
}
.viewer-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.viewer-toast i { color: #4ade80; }

/* ── Stage ───────────────────────────────────────────────────────────────── */
.viewer-stage {
  display: flex; align-items: center; justify-content: center;
  height: calc(100vh - 56px - 52px);
  padding: 1rem 64px;
  position: relative; overflow: hidden;
}

/* ── FlipBook engine ─────────────────────────────────────────────────────── */
.fb-root {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}

/* ─ Double page ─────────────────────────────────────────────────────────── */
.fb-scene {
  perspective: 2200px;
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%;
  transform-origin: center center;
}

.fb-book {
  position: relative;
  display: flex;
  box-shadow: 0 30px 90px rgba(0,0,0,.85), 0 0 0 1px rgba(255,255,255,.04);
  border-radius: 2px 3px 3px 2px;
  transform-style: preserve-3d;
}

.fb-half {
  position: relative;
  overflow: hidden;
  background: #fff;
  flex: 1;
}
.fb-half--l {
  border-radius: 3px 0 0 3px;
  background: linear-gradient(to right, #e8e8e8 0%, #fff 8%);
}
.fb-half--r {
  border-radius: 0 3px 3px 0;
  background: linear-gradient(to left,  #e8e8e8 0%, #fff 8%);
}
.fb-img { width: 100%; height: 100%; object-fit: contain; display: block; background: #fff; }

/* Ombre de courbure proche de la reliure */
.fb-gutter {
  position: absolute; top: 0; bottom: 0; width: 28px; pointer-events: none; z-index: 2;
}
.fb-gutter--r { right: 0; background: linear-gradient(to right, transparent, rgba(0,0,0,.13)); }
.fb-gutter--l { left:  0; background: linear-gradient(to left,  transparent, rgba(0,0,0,.13)); }

/* Reliure centrale */
.fb-book::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: calc(50% - 3px);
  width: 6px;
  background: linear-gradient(to right, #333 0%, #999 40%, #bbb 50%, #999 60%, #333 100%);
  z-index: 30;
  box-shadow: 0 0 8px rgba(0,0,0,.6);
  pointer-events: none;
}

/* ─ Flipper (l'élément qui tourne) ──────────────────────────────────────── */
.fb-flipper { transform-style: preserve-3d; }

.fb-face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #fff;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.fb-face--back { transform: rotateY(180deg); }

/* Ombre de pli dynamique sur le flipper (pseudo-élément) */
.fb-face--front::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,.22) 0%, transparent 40%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.fb-flipper:not([style*="rotateY(0"]) .fb-face--front::after { opacity: 1; }

/* ─ Single page ─────────────────────────────────────────────────────────── */
.fb-single {
  perspective: 1800px;
  display: flex; align-items: center; justify-content: center;
  transform-origin: center center;
}

.fb-s-card {
  position: relative;
  transform-style: preserve-3d;
  will-change: transform;
  box-shadow: 0 24px 80px rgba(0,0,0,.8);
  border-radius: 2px;
  /* taille calculée dynamiquement via JS → on garde juste un fallback */
  width: 400px; height: 566px;
}

.fb-s-face {
  position: absolute; inset: 0;
  background: #fff;
  overflow: hidden;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.fb-s-back { transform: rotateY(180deg); }

/* ── Nav arrows ──────────────────────────────────────────────────────────── */
.viewer-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.1); border: 1px solid var(--v-border);
  cursor: pointer; color: #fff;
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: all .15s; z-index: 50; font-size: .9rem;
}
.viewer-nav:hover:not(:disabled) { background: var(--v-accent); border-color: var(--v-accent); }
.viewer-nav:disabled { opacity: .2; cursor: default; }
.viewer-nav--prev { left: 12px; }
.viewer-nav--next { right: 12px; }

/* ── Flipbook container ──────────────────────────────────────────────────── */
.flipbook-wrapper {
  display: flex; align-items: center; justify-content: center;
  flex: 1; height: 100%;
}
#flipbook { width: 100%; height: 100%; }

/* ── Controls bar ────────────────────────────────────────────────────────── */
.viewer-controls {
  height: 52px;
  background: var(--v-bar);
  border-top: 1px solid var(--v-border);
  display: flex; align-items: center; justify-content: center;
  gap: .35rem; padding: 0 1rem; flex-shrink: 0;
}
.ctrl-btn {
  background: rgba(255,255,255,.07); border: 1px solid var(--v-border);
  cursor: pointer; color: var(--v-muted);
  padding: .4rem .55rem; border-radius: 6px; font-size: .85rem;
  transition: all .15s; min-width: 34px;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.ctrl-btn:hover { background: var(--v-accent); color: #fff; border-color: var(--v-accent); }
.ctrl-btn:disabled { opacity: .3; cursor: default; pointer-events: none; }

/* ── Tooltips ────────────────────────────────────────────────────────────── */
[data-tip] { position: relative; }
[data-tip]::before, [data-tip]::after {
  position: absolute;
  left: 50%; transform: translateX(-50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity .15s, transform .15s;
  z-index: 500;
}
[data-tip]::before {
  content: attr(data-tip);
  bottom: calc(100% + 10px);
  background: rgba(10,10,20,.92);
  color: #fff;
  padding: .3rem .65rem;
  border-radius: 7px;
  font-size: .75rem;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid rgba(255,255,255,.08);
  transform: translateX(-50%) translateY(4px);
}
[data-tip]::after {
  content: '';
  bottom: calc(100% + 5px);
  border: 5px solid transparent;
  border-top-color: rgba(10,10,20,.92);
  transform: translateX(-50%) translateY(4px);
}
[data-tip]:hover::before { opacity: 1; transform: translateX(-50%) translateY(0); }
[data-tip]:hover::after  { opacity: 1; transform: translateX(-50%) translateY(0); }
.ctrl-separator { width: 1px; height: 20px; background: var(--v-border); margin: 0 .2rem; }
.ctrl-page {
  font-size: .85rem; color: var(--v-muted);
  display: flex; align-items: center; gap: .4rem; padding: 0 .4rem;
}
.ctrl-sep { color: var(--v-border); }
.ctrl-page input[type=number] {
  width: 48px; background: rgba(255,255,255,.08); border: 1px solid var(--v-border);
  border-radius: 6px; color: #fff; text-align: center; padding: .25rem;
  font: inherit; font-size: .85rem;
}
.ctrl-page input:focus { outline: none; border-color: var(--v-accent); }

/* ── Thumbnails panel ────────────────────────────────────────────────────── */
.thumbs-panel {
  position: fixed; left: 0; top: 56px; bottom: 52px;
  width: 210px; background: var(--v-surface);
  border-right: 1px solid var(--v-border);
  overflow-y: auto; z-index: 100;
  transform: translateX(-100%); transition: transform .25s ease;
  display: flex; flex-direction: column;
}
.thumbs-panel.open { transform: translateX(0); }
.thumbs-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 1rem; border-bottom: 1px solid var(--v-border);
  font-size: .8rem; font-weight: 700; color: var(--v-muted); flex-shrink: 0;
}
.thumbs-close {
  background: none; border: none; cursor: pointer;
  color: var(--v-muted); font-size: .9rem; padding: .1rem .3rem;
  border-radius: 4px; transition: color .15s;
}
.thumbs-close:hover { color: var(--v-text); }
.thumbs-inner { display: flex; flex-direction: column; gap: .5rem; padding: .75rem; overflow-y: auto; }
.thumb-item {
  background: none; border: 2px solid transparent; cursor: pointer;
  border-radius: 6px; overflow: hidden; position: relative;
  transition: border-color .15s;
}
.thumb-item:hover { border-color: var(--v-accent); }
.thumb-item.active { border-color: var(--v-accent); }
.thumb-item img { width: 100%; display: block; }
.thumb-item span {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(0,0,0,.6); color: #fff; font-size: .7rem;
  padding: .15rem 0; text-align: center;
}

/* ── Fullscreen ──────────────────────────────────────────────────────────── */
:fullscreen .viewer-topbar, :fullscreen .viewer-controls { display: flex !important; }
:fullscreen .viewer-stage { height: calc(100vh - 108px); }

/* ── Lecteur vidéo ───────────────────────────────────────────────────────── */
.viewer-video-wrap {
  height: calc(100vh - 56px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  padding: 2rem;
}
.viewer-video {
  max-width: 100%;
  max-height: 100%;
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,.7);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .viewer-title { display: none; }
  .viewer-btn span { display: none; }
  .viewer-stage { padding: .5rem 52px; }
  .viewer-video-wrap { padding: .5rem; }
}