/* -------------------- GLOBAL -------------------- */
html, body {
  height: auto;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto; /* ✅ permet de scroller en ligne */
  margin: 0;
  padding: 0;
  font-family: 'Georgia', serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  background: #fff9f2;
  transition: background 0.4s ease;
}

/* Toolbar */
.toolbar {
  margin: 20px;
  display: flex;
  gap: 10px;
  align-items: center;
}

button, select {
  padding: 10px 15px;
  font-size: 16px;
  border: none;
  background: #ffe7c4;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s ease;
}
button:hover, select:hover {
  background: #fdd9a8;
}

/* -------------------- BOOK WRAPPER -------------------- */
#book {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: transparent;
  gap: 0;
  z-index: 1;
  flex-wrap: nowrap;
  flex-direction: column;
  flex-wrap: nowrap;
  height: auto;
  max-width: 100vw;
}



/* -------------------- PAGE -------------------- */
.page {
  width: 512px;
  aspect-ratio: 2 / 3;
  display: flex;
  justify-content: center;
  align-items: center;
  background: transparent;
  overflow: hidden;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transform-origin: initial;
  transform: rotateY(0deg);
  transition: transform 0.5s ease, opacity 0.5s ease;
  flex-shrink: 0;
  cursor: pointer;
}

/* -------------------- IMAGE -------------------- */
.page-img {
  width: 100%;
  height: auto;
  max-height: 100vh;
  object-fit: contain;
  display: block;
  margin: 0;
  padding: 0;
}

/* -------------------- PAGE EFFECTS -------------------- */
.page.visible {
  opacity: 1;
}
.page.turning {
  transform: rotateY(-90deg);
  opacity: 0;
}
.page::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 60px;
  background: radial-gradient(closest-side, rgba(0, 0, 0, 0.88), transparent);
  clip-path: polygon(100% 100%, 0% 100%, 100% 0%);
  pointer-events: none;
  opacity: 0.8;
  transition: opacity 0.3s;
}
.page:hover::after { opacity: 0.6; }
.page.right::after { right: 0; bottom: 0; }
.page.left::after { left: 0; bottom: 0; transform: rotate(90deg); }
.page.solo::after { right: 0; bottom: 0; }

/* -------------------- THEMES -------------------- */
body.magic {
  background: radial-gradient(#1a0136 0%, #000 100%);
  background-attachment: fixed;
  background-size: cover;
  min-height: 100vh;
}
body.night { background: #1b1b1b; }
body.blue  { background: #d0e7ff; }
body.green { background: #d7f9e5; }
body.pink  { background: #ffe0f0; }

body.light #book,
body.light #book.fullscreen { background: #fff9f2; }
body.blue #book,
body.blue #book.fullscreen { background: #d0e7ff; }
body.green #book,
body.green #book.fullscreen { background: #d7f9e5; }
body.pink #book,
body.pink #book.fullscreen { background: #ffe0f0; }
body.night #book,
body.night #book.fullscreen { background: #2b2b2b; }

body.magic #book,
body.magic #book.fullscreen {
  background: transparent;
  border: 2px solid #9c6cd3;
  box-shadow: 0 0 30px #d99cff;
  border-radius: 12px;
  animation: glowPulse 3s ease-in-out infinite;
}

/* -------------------- GLOW & STARFIELD -------------------- */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px #d99cff; }
  50%      { box-shadow: 0 0 40px #e7caff; }
}

body.magic .starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: url('images/stars.gif') repeat;
  animation: moveStars 60s linear infinite;
  opacity: 0.2;
  z-index: 0;
  pointer-events: none;
}

@keyframes moveStars {
  from { transform: translate(0, 0); }
  to   { transform: translate(-50%, -50%); }
}

/* -------------------- FAUX PLI CENTRAL -------------------- */
/* --- Faux pli central : affiché seulement en mode desktop avec deux pages --- */

#book.twopages {
  position: relative;
}
#book.twopages::before {
  content: '';
  position: absolute;
  top: 5%;
  bottom: 5%;
  left: 50%;
  width: 80px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.5), transparent 70%);
  z-index: 2;
  pointer-events: none;
  filter: blur(3px);
  opacity: 0.8;
  border-radius: 50%;
}




#book.fullscreen.twopages::before {
  display: none;
}

/* -------------------- FULLSCREEN MODE -------------------- */
#book.fullscreen.twopages {
  gap: 0 !important;
  justify-content: center;
  align-items: center;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: row;
  position: relative;
}
#book.fullscreen .page {
  width: 50vw;
  height: 100vh;
  max-height: 100vh;
  margin: 0;
  padding: 0;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}
#book.fullscreen .page-img {
  max-height: 100vh;
}

/* -------------------- RESPONSIVE -------------------- */
@media (max-width: 768px) {
  #book {
    flex-direction: column;
  }
  .page {
    width: 90vw;
    aspect-ratio: 2 / 3;
    max-height: 85vh;
  }
  .page-img {
    object-fit: contain;
  }
}

@media (orientation: portrait) {
  #book.fullscreen {
    height: auto;
    max-height: 100vh;
  }
  #book.fullscreen .page {
    width: 90vw;
    max-height: 85vh;
  }
}

/* -------------------- WRAPPER OPTIONNEL -------------------- */
.book-frame {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: inherit;
  overflow: hidden;
  position: relative;
}


.page::after {
  content: '';
  position: absolute;
  width: 60px;
  height: 60px;
  clip-path: polygon(100% 100%, 0% 100%, 100% 0%);
  pointer-events: none;
  opacity: 0.3;
  transition: opacity 0.3s;
  z-index: 1;
}

.page:hover::after {
  opacity: 0.6;
}

.page.right::after {
  right: 0;
  bottom: 0;
}
.page.left::after {
  left: 0;
  bottom: 0;
  transform: rotate(90deg);
}
.page.solo::after {
  right: 0;
  bottom: 0;
}

/* ----------------- THÈME : coin corné par ambiance ----------------- */
body.light .page::after {
  background: radial-gradient(closest-side, rgba(255, 211, 164, 0.9), transparent);
}

body.night .page::after {
  background: radial-gradient(closest-side, rgba(0, 0, 0, 0.9), transparent);
}

body.blue .page::after {
  background: radial-gradient(closest-side, rgba(3, 129, 255, 0.9), transparent);
}

body.green .page::after {
  background: radial-gradient(closest-side, rgba(11, 143, 77, 0.9), transparent);
}

body.pink .page::after {
  background: radial-gradient(closest-side, rgba(165, 28, 76, 0.9), transparent);
}

body.magic .page::after {
  background: radial-gradient(closest-side, rgba(112, 8, 176, 0.9), transparent);
}

#book.fullscreen {
  overflow-y: auto; /* ✅ permet le scroll */
  align-items: flex-start;
}

#book {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: visible;
  background: transparent;
  gap: 0;
  flex-wrap: nowrap;
  width: auto;
  height: auto;
  flex-direction: row; /* Valeur par défaut */
}

.page.turning-left {
  animation: turnLeftFromOutside 0.6s forwards;
}

.page.turning-right {
  animation: turnRightFromOutside 0.6s forwards;
}

@keyframes turnLeftFromOutside {
  0% {
    transform: rotateY(0deg);
    opacity: 1;
    transform-origin: right; /* 👈 commence de l’extérieur */
  }
  100% {
    transform: rotateY(-180deg);
    opacity: 0;
    transform-origin: right;
  }
}

@keyframes turnRightFromOutside {
  0% {
    transform: rotateY(0deg);
    opacity: 1;
    transform-origin: left; /* 👈 commence de l’extérieur */
  }
  100% {
    transform: rotateY(180deg);
    opacity: 0;
    transform-origin: left;
  }
}


.about-box {
  max-width: 600px;
  margin: 30px auto 20px;
  padding: 20px 30px;
  background: rgba(255, 255, 255, 0.7);
  border: 2px solid rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  font-family: 'Georgia', serif;
  text-align: center;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  position: relative;
  backdrop-filter: blur(5px);
  transition: background 0.4s ease;
}

body.night .about-box {
  background: rgba(30, 30, 30, 0.6);
  color: #eee;
  border-color: rgba(255, 255, 255, 0.2);
}

body.magic .about-box {
  background: rgba(64, 0, 128, 0.3);
  border-color: #d99cff;
  color: #f7eaff;
  box-shadow: 0 0 15px #d99cff;
}

.arabesque {
  font-size: 30px;
  color: #999;
  margin: 10px 0;
}

.arabesque.rotated {
  transform: rotate(180deg);
}
.intro-card {
  max-width: 600px;
  margin: 40px auto;
  padding: 30px 20px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  text-align: center;
  font-family: 'Georgia', serif;
  position: relative;
  border: 2px dashed rgba(0, 0, 0, 0.1);
}

.intro-card h2 {
  font-size: 1.8em;
  margin-bottom: 10px;
  font-weight: bold;
  color: #2b2b2b;
}

.intro-card p {
  font-size: 1.1em;
  color: #333;
  line-height: 1.6;
}

.decor-top,
.decor-bottom {
  font-size: 1.4em;
  color: #a3a3a3;
  margin: 10px 0;
  letter-spacing: 4px;
}

.arabesque-line {
  font-size: 1.4em;
  margin: 18px 0;
  letter-spacing: 5px;
  transition: color 0.3s ease;
}

/* Thème clair (par défaut) */
body.light .arabesque-line {
  color: #aaa;
}

/* Thème nuit */
body.night .arabesque-line {
  color: #ccc;
}

/* Thème magique */
body.magic .arabesque-line {
  color: #d99cff;
}

/* Thème bleu */
body.blue .arabesque-line {
  color: #5390d9;
}

/* Thème vert */
body.green .arabesque-line {
  color: #4ba867;
}

/* Thème rose */
body.pink .arabesque-line {
  color: #d97ca7;
}
.coloring-gallery {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  padding: 40px;
}

.coloring-gallery img {
  width: 300px;
  border: 2px dashed #aaa;
  border-radius: 10px;
  background: #fff;
}
.button {
  padding: 10px 15px;
  font-size: 16px;
  background: #ffe7c4;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition: background 0.3s ease;
}

.button:hover {
  background: #fdd9a8;
}
@media (max-width: 600px) {
  .toolbar {
    flex-wrap: wrap;
    justify-content: center;
    padding: 10px;
  }

  .toolbar button,
  .toolbar select,
  .toolbar .button {
    flex: 1 1 40%;
    margin: 5px 4px;
    font-size: 15px;
  }

  #pageIndicator {
    margin: 10px auto;
    font-size: 16px;
  }

  .about-box,
  .intro-card {
    padding: 15px 10px;
    margin: 20px 10px;
    font-size: 0.95em;
  }

  .intro-card h2 {
    font-size: 1.4em;
  }

  .intro-card p {
    font-size: 1em;
  }

  .arabesque-line {
    font-size: 1.2em;
    letter-spacing: 3px;
  }

  .book-frame {
    height: auto;
    flex-direction: column;
    align-items: center;
    padding: 0 10px;
  }

  #book {
    flex-direction: column !important;
    align-items: center;
    justify-content: center;
  }

  .page {
    width: 90vw;
    max-width: 100%;
    max-height: 80vh;
  }

  .page-img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
  }
}
@media (max-width: 600px) {
  .about-box {
    margin: 40px 20px 30px;
  }
}
/* Masquer le faux pli central en mode mobile (écran étroit) */
@media (max-width: 768px) {
  #book.twopages::before {
    display: none !important;
  }
}