* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  padding-top: 70px;
}

/* HEADER */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #f7efe3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  z-index: 1000;
}

.header a {
  margin: 0 10px;
  text-decoration: none;
  color: #333;
}

.login-btn {
  background: #d6b86c;
  border: none;
  padding: 8px 14px;
  cursor: pointer;
}

/* HERO */
.hero {
  background: #4b2f0b;
  color: white;
  padding: 60px 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  margin-top: 30px;
}

.hero img {
  width: 100%;
}

.hero-form input {
  width: 100%;
  margin: 8px 0;
  padding: 8px;
}

.hero-form button {
  background: #d6b86c;
  border: none;
  padding: 10px;
  width: 100%;
}

/* GÉNEROS */
.genres {
  padding: 60px 40px;
  text-align: center;
}

.genres-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.genre-card {
  height: 280px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.overlay {
  background: rgba(0,0,0,0.55);
  color: white;
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.overlay button {
  margin-top: 10px;
  background: #d6b86c;
  border: none;
  padding: 8px 14px;
}

/* NUEVOS */
.new-books {
  background: #1f2428;
  color: white;
  padding: 60px 40px;
}

.books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.book-card {
  background: white;
  color: black;
}

.book-card img {
  width: 100%;
}

.book-card h3 {
  padding: 10px;
}

.price {
  padding: 0 10px 10px;
  color: #d6b86c;
}

/* HOVER DEL PRODUCTO */
.book-image {
  position: relative;
  overflow: hidden;
}

.book-image img {
  width: 100%;
  display: block;
  transition: opacity 0.4s ease;
}

/* Botón oculto inicialmente */
.book-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, 30px);
  opacity: 0;
  background: #d6b86c;
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  transition: 
    opacity 0.4s ease,
    transform 0.4s ease;
}

/* HOVER */
.book-card:hover img {
  opacity: 0.3;
}

.book-card:hover .book-btn {
  opacity: 1;
  transform: translate(-50%, -50%);
}