body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    linear-gradient(rgba(0, 0, 0, 0.644), rgba(0, 0, 0, 0.551)),
    url("res/img/bac2.webp") no-repeat;
  overflow-x: hidden;
  background-size: cover;
  top: 0;
  justify-content: center;
  align-items: center;
}

/* Navbar */
nav {
  position:sticky;left:0;right:0;top:16px;margin:0 auto;z-index:1000;
  max-width:1200px;display:flex;justify-content:space-between;align-items:center;padding:18px 28px;border-radius:12px;
  transition:all .35s ease;backdrop-filter:blur(10px);
  background:linear-gradient(90deg, rgba(0, 0, 0, 0.104), rgba(0, 0, 0, 0.668));
    border:1px solid rgba(255, 136, 0, 0.12); box-shadow:0 6px 30px rgba(255, 179, 0, 0.035);
transform:translateY(-6px);box-shadow:0 10px 40px rgba(0,170,255,0.08);
}

nav div {
  margin-right: 10%;
  height: 100%;
  text-align: center;
  justify-content: center;
}
nav h2 {
  color: #ffb347;
  margin-left: 30px;
}
nav a {
  color: white;
  margin: 0 15px;
  justify-self: center;
  text-decoration: none;
  transition: 0.3s;
}

nav a:hover {
  color: #ffb347;
}

/* Hero Text */
.hero {
  position: absolute;
  top: 0;
  width: 100%;
  text-align: center;
  z-index: 5;
  left: 10%;
  display: flex;
}

.hero h1 {
  font-size: 60px;
}

.hero p {
  font-size: 20px;
  color: #ccc;
}

.btn {
  padding: 12px 30px;
  background: #ffb347;
  border: none;
  margin-top: 20px;
  cursor: pointer;
  font-size: 18px;
  transition: 0.3s;
  border-radius: 30px;
}

.btn:hover {
  background-color: #111;
  border: 2px solid #ffb347;
  color: rgb(237, 177, 64);
  font-size: 19px;
}

/* Section */
.section {
  padding: 100px 20px;
  text-align: center;
  background: #111;
}

.section h2 {
  color: #ffb347;
}

.card {
  width: 50%;
  padding: 20px;
  margin: auto;
  background: #1b1b1b;
  border-radius: 20px;
  display: flex;
  transform-style: preserve-3d;
  transition: 0.5s;
}

.card img {
  width: 150px;
}

.card p {
  color: wheat;
  align-content: center;
  text-align: center;
}

.card:hover {
  transform: rotateY(20deg) rotateX(10deg);
}

#bg {
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: flex-start;
  align-items: center; 
}

canvas {
  display: block;
}

.book_animation {   
  width: 30%;
  height: 100vh;
}
.book_animation iframe {
  width: 100%;
  height: 100%;
}
.book_about {
  width: 70%;
  top: 30%;
  right: 0%;
  left: 35%;
  text-align: left;
  position: absolute;
  align-items: flex-end;
}
.book_about p {
  width: 70%;
  z-index: 10;
  text-shadow: 0px 0px 20px rgba(255, 255, 255, 0.353);
}
  .side-panel{
    display: none;
  }
  .menu-icon{
    display: none;
  }

/* Tablet */

@media(max-width:1150px){
    .book_animation{
        width: 50%;
        margin-left: -80px;
    }
    .book_about{
        top: 25%;
    }
    .book_about p{
        font-size: 16px;
    }
    .book_about h1{
        font-size: 40px;
    }
}

@media (max-width: 992px) {
  .book_animation {
    width: 40%;
    height: 100vh;
  }
  .side-panel{
    display: none;
  }
  .menu-icon{
    display: none;
  }
  .book_animation iframe {
    width: 100%;
    height: 100%;
  }

  .book_about {
  width: 60%;
  top: 30%;
  right: 0%;
  left: 45%;
  text-align: left;
  position: absolute;
  align-items: flex-end;
}
.book_about p {
  width: 70%;
}
}

@media(max-width:900px){
    .book_animation{
        width: 50%;
        margin-left: -50px;
    }
}


/* Mobile */
@media (max-width: 700px) {

body{
      background:
    linear-gradient(rgba(0, 0, 0, 0.644), rgba(0, 0, 0, 0.551)),
    url("res/img/bg_mobile.jpg") no-repeat;

    background-position: right;
    justify-content: center;
    align-content: center;
    text-align: center;
    background-position-x: -1100px;
    background-position-y: -300px;
    position: relative;
    background-size: cover;
}

.hero {
  top: 5%;
  width: 100%;
  text-align: center;
  z-index: 5;
  left: 0;
  display: block;
  align-items: center;
  justify-content: space-around;
}
  .book_animation {
    width: 115%;
    height: 60vh;
    
  }
  .book_animation iframe {
    width: 100%;
    height: 100%;
  }

  .book_about {
  width: 90%;
  top: 30%;
  left: 10px;
  right: 0;
  text-align: left;
  position: relative;
  align-items: center;
  text-align: center;
}
.book_about p {
  width: 100%;
}

.hero h1 {
  font-size: 25px;
  text-align: center;
}
.hero p{
    font-size: 15px;
    text-align: center;
    width: 100%;
}



.card {
  width: 50%;
  padding: 20px;
  margin: auto;
  background: #1b1b1b;
  border-radius: 20px;
  display: block;
  transform-style: preserve-3d;
  transition: 0.5s;
}
.card img {
  width: 100px;
  height: 100px;
}
.section h2 {
  font-size: 18px;
}
.card p {
  color: wheat;
  align-content: center;
  text-align: center;
  font-size: 12px;
}



/* Side Panel */

.big-pannel a{
    display: none;
}
.menu-icon{
    display: flex;
    font-size: 28px;
    cursor: pointer;
    color: white;
}

.side-panel {
  position: fixed;
  top: 0;
  right: -300px;
  width: 280px;
  height: 100%;
  backdrop-filter: blur(15px);
  box-shadow: -5px 0 15px rgba(0,0,0,0.5);
  padding: 20px;
  display: flex;
  background: rgba(0, 0, 0, 0.44);
  flex-direction: column;
  gap: 15px;
  transition: right 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55); 
  transform: perspective(1000px) rotateY(-10deg);
  z-index: 2000;
}

/* Active state slides panel in */
.side-panel.active {
  right: 0;
  transform: perspective(1000px) rotateY(0deg);
}

/* Links inside panel */
.side-panel a {
  font-size: 20px;
  text-decoration: none;
  color: #bababa;
  padding: 10px 15px;
  border-radius: 6px;
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.4s ease;
}

/* Animate links when panel active */
.side-panel.active a {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger animation */
.side-panel.active a:nth-child(2) { transition-delay: 0.1s; }
.side-panel.active a:nth-child(3) { transition-delay: 0.2s; }
.side-panel.active a:nth-child(4) { transition-delay: 0.3s; }
.side-panel.active a:nth-child(5) { transition-delay: 0.4s; }

/* Hover effect for links */
.side-panel a:hover {
  background: #f0f0f077;

  transform: scale(0.35s);
  color: #ffa600;
}

/* Close button */
.close-btn {
  font-size: 28px;
  color: #333;
  align-self: flex-end;
  cursor: pointer;
  transition: transform 0.3s ease, color 0.3s ease;
}

.close-btn:hover {
  transform: rotate(90deg);
  color: red;
}

/* Overlay background */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.45);
  display: none;
  z-index: 1500;
}




}