/* RESET & STYLE DE BASE */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --primary-color: #3a6ea5;
  --primary-dark: #2c5282;
  --dark-color: #2c3e50;
  --light-color: #f8f9fa;
  --gray-color: #6c757d;
  --light-gray: #e9ecef;

  --border-radius: 12px;
  --border-radius-sm: 6px;
  --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}
body {
  font-family: "Poppins", sans-serif;
  color: var(--dark-color);
  background-color: var(--light-color);
  line-height: 1.6;
}

/* TITRE & TEXTE */
h1, h2, h3 {
  font-family: "Playfair Display", serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
p {
  margin-bottom: 16px;
}
a {
  color: var(--primary-color);
  text-decoration: none;
}

/* CONTAINER */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* BOUTON */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 27px;
  border-radius: var(--border-radius);
  font-weight: 500;
  border: none;
}
.btn-primary {
  background: var(--primary-color);
  color: white;
}
.search-btn {
  background: var(--primary-dark);
  color: white;
  border-radius: var(--border-radius);
}
.submit-btn {
  width: 100%;
  justify-content: center;
  font-size: 18px;
  padding: 16px 32px;
}

/* HEADER */
header {
  background: white;
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 16px;
}
header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo h1 {
  color: var(--primary-color);
  margin-bottom: 0;
}
.tagline {
  font-size: 14px;
  color: var(--gray-color);
  margin-bottom: 0;
  font-style: italic;
}
nav ul {
  display: flex;
  list-style: none;
}
nav ul li {
  margin-left: 45px;
}
nav ul li a {
  color: var(--dark-color);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--border-radius-sm);
}
nav ul li a.active {
  color: var(--primary-color);
  background-color: rgba(58, 110, 165, 0.1);
}

/* HERO */
.hero {
  padding: 48px 0;
  background: var(--primary-color);
}
.hero .container {
  display: flex;
  align-items: center;
  gap: 48px;
}
.hero-content {
  flex: 1;
}
.hero-content h2 {
  font-size: 45px;
  margin-bottom: 24px;
  color: var(--light-color);
}
.hero-content p {
  font-size: 19px;
  margin-bottom: 32px;
  color: var(--light-color);
}
.hero-image {
  flex: 1;
  text-align: center;
}
.hero-image img {
  max-width: 100%;
  border-radius: var(--border-radius);
}

/* INTRODUCTION */
.kitabu-intro {
  padding: 48px 0;
  background: white;
}
.kitabu-intro h2 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 35px;
  color: var(--primary-dark);
}
.intro-content {
  max-width: 1000px;
  margin: 0 auto;
  font-size: 21px;
  line-height: 2;
}
.intro-list {
  list-style: none;
  padding-left: 0;
  margin-top: 32px;
  display: grid;
  gap: 24px;
}
.intro-list li {
  display: flex;
  align-items: center;
  background-color: var(--primary-color);
  padding: 16px;
  border-radius: var(--border-radius-sm);
  color: var(--light-color);
}
.intro-list li i {
  margin-right: 16px;
  font-size: 16px;
}

/* RECHERCHE */
.search-section {
  padding: 48px 0;
  background-color: white;
}
.search-section h2 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 35px;
}
.search-box {
  display: flex;
  margin-bottom: 24px;
  box-shadow: var(--box-shadow);
}
.search-box input {
  flex: 1;
  padding: 16px;
  border: none;
  font-size: 16px;
  outline: none;
}

/* CATALOGUE */
.catalogue-section {
  padding: 48px 0;
  background: var(--light-gray);
}
.catalogue-section h2 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 35px;
}
.books-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.book-card {
  background-color: white;
  border-radius: var(--border-radius);
}
.book-image {
  height: 250px;
}
.book-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.book-info {
  padding: 16px;
}
.book-info h3 {
  font-size: 29px;
  margin-bottom: 8px;
  color: var(--dark-color);
}
.book-info p {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--gray-color);
}
.book-info .btn{
  display: block;
  margin: 14px ;
  text-align: center;
}

/* RÉSERVATION */
.reservation-section {
  padding: 48px 0;
  background-color: white;
}
.reservation-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 32px;
}
.reservation-content h2 {
  font-size: 35px;
  margin-bottom: 24px;
}
.reservation-form {
  max-width: 900px;
  margin: 0 auto;
  background: #ffffff;
  padding: 50px;
  border-radius: var(--border-radius);
  border: 2px solid var(--primary-color);
}
.livre-selectionne {
  text-align: center;
  padding: 8px;
  border: 2px solid var(--primary-color);
  border-radius: var(--border-radius);
  font-weight: bold;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  margin-bottom: 8px;
  font-weight: 500;
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 13px;
  border: 2px solid var(--light-gray);
  border-radius: var(--border-radius);
  font-size: 16px;
  outline: none;
}

/* POINTS DE RETRAIT */
.points-section {
  padding: 48px 0;
  background: #f0f4f8;
}
.points-section h2 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 35px;
}
.points-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}
.point-card {
  background-color: white;
  padding: 32px;
  border-radius: var(--border-radius);
  text-align: center;
  border: 2px solid var(--primary-color);
}
.point-card p {
  font-size: 14px;
  color: var(--gray-color);
  line-height: 1.6;
}

/* FOOTER */
footer {
  background: var(--dark-color);
  padding: 48px 0 24px;
}
.footer-bottom {
  text-align: center;
  color: #adb5bd;
  font-size: 14px;
}