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

html,
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background: black;
  scroll-behavior: smooth;
}

main {
  flex: 1;
}

body.home-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

body.home-page main {
  flex: 1;
  overflow: hidden;
}

body.home-page footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  padding: 20px 0;
  color: #C9D6DF;
  font-size: 0.9rem;
}

.stars,
.twinkling {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: -1;
  pointer-events: none;
}

.stars {
  background: url('https://www.transparenttextures.com/patterns/stardust.png') repeat;
  z-index: 0;
  animation: moveStars 200s linear infinite;
}

.twinkling {
  background: url('https://www.transparenttextures.com/patterns/tiny-cross-hatch.png') repeat;
  animation: moveTwinkling 150s linear infinite;
  z-index: 1;
  opacity: 0.6;
}

@keyframes moveStars {
  from {
    background-position: 0 0;
  }

  to {
    background-position: -10000px 5000px;
  }
}

@keyframes moveTwinkling {
  from {
    background-position: 0 0;
  }

  to {
    background-position: 10000px 5000px;
  }
}

header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  background-color: transparent;
  align-items: center;
  justify-content: flex-start;
  padding: 20px 40px;
  gap: 35rem;
  transition: background 0.4s ease, color 0.4s ease;
}

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

html,
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background: black;
  scroll-behavior: smooth;
}

main {
  flex: 1;
}

body.home-page {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

body.home-page main {
  flex: 1;
  overflow: hidden;
}

body.home-page footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  padding: 20px 0;
  color: #C9D6DF;
  font-size: 0.9rem;
}


.stars,
.twinkling {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: -1;
  pointer-events: none;
}

.stars {
  background: url('https://www.transparenttextures.com/patterns/stardust.png') repeat;
  z-index: 0;
  animation: moveStars 200s linear infinite;
}

.twinkling {
  background: url('https://www.transparenttextures.com/patterns/tiny-cross-hatch.png') repeat;
  animation: moveTwinkling 150s linear infinite;
  z-index: 1;
  opacity: 0.6;
}

@keyframes moveStars {
  from {
    background-position: 0 0;
  }

  to {
    background-position: -10000px 5000px;
  }
}

@keyframes moveTwinkling {
  from {
    background-position: 0 0;
  }

  to {
    background-position: 10000px 5000px;
  }
}

header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  background-color: transparent;
  align-items: center;
  justify-content: flex-start;
  padding: 20px 40px;
  gap: 35rem;
  transition: background 0.4s ease, color 0.4s ease;
}

header.scrolled {
  background: rgba(5, 4, 4, 0.976);
}

header.scrolled .logo,
header.scrolled nav a {
  color: #E0E0E0;
}

.logo {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
  padding-left: 25px;
}

nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
}

nav a {
  position: relative;
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  letter-spacing: 0.5px;
  transition: color 0.3s ease;
  padding-bottom: 4px;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  right: 0;
  width: 0%;
  height: 2.5px;
  background-color: white;
  transition: width 0.2s ease, right 0.9s ease;
}

nav a:hover::after {
  width: 100%;
  right: 0;
}

nav a:hover {
  color: #5BC0EB;
}

.hero {
  position: relative;
  height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  z-index: 5;
  overflow: hidden;
  padding-top: 80px;
}


.hero h1 {
  font-size: 3rem;
  font-family: 'Poppins', sans-serif;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.hero h1 span {
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.2rem;
  color: #C9D6DF;
  margin-bottom: 30px;
}

#enter-btn {
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: 30px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#enter-btn:hover {
  box-shadow: 0 0 8px #5BC0EB;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    text-align: center;
  }

  nav a {
    display: inline-block;
    margin: 10px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  button,
  .book-card button,
  #enter-btn,
  .contact-content button,
  .modal-buttons button {
    min-height: 40px;
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  html,
  body {
    overflow-x: hidden;
    position: relative;
  }

  nav a,
  button,
  .book-card,
  .member-card {
    transition: all 0.3s ease;
  }

  header.scrolled {
    background: rgba(5, 4, 4, 0.95);
    backdrop-filter: blur(10px);
  }

  .nav-overlay.active {
    display: block;
  }

  .hamburger {
    position: absolute;
    top: 18px;
    right: 20px;
    display: flex;
    margin: 0;
    padding: 5px;
  }

  header {
    position: relative;
  }
}

.books-section {
  padding: 120px 60px;
  text-align: center;
  position: relative;
  z-index: 10;
}

.books-section h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: #5BC0EB;
  letter-spacing: 1px;
}

.search-bar {
  margin: 20px auto 50px;
  display: flex;
  justify-content: center;
}

#searchInput {
  width: 300px;
  padding: 10px 15px;
  border: 2px solid #5BC0EB;
  border-radius: 8px;
  outline: none;
  font-size: 1rem;
  text-align: left;
}

.book-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 30px;
  justify-content: center;
}

.book-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  padding: 15px;
  text-align: center;
  transition: transform 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
  animation: fadeIn 0.6s ease forwards;
  margin: auto;
}

.book-card:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 15px rgba(91, 192, 235, 0.4);
}

.book-card img {
  width: 100%;
  height: 20rem;
  border-radius: 12px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.book-card:hover img {
  transform: scale(1.05);
}

.book-card h3 {
  margin: 15px 0 5px;
  font-size: 1.1rem;
  color: #fff;
}

.book-card p {
  margin: 0;
  font-size: 0.9rem;
  color: #cfd6e1;
}

.tag {
  display: inline-block;
  background: #5BC0EB;
  color: black;
  font-weight: bold;
  font-size: 0.8rem;
  padding: 5px 10px;
  border-radius: 20px;
  margin-top: 8px;
}

.book-card button {
  display: inline-block;
  margin-top: 10px;
  margin-left: 10px;
  padding: 6px 15px;
  background: #5BC0EB;
  color: black;
  font-weight: bold;
  font-size: 0.85rem;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}

.book-card button:hover {
  background: #4aa0c9;
  transform: scale(1.05);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#toast {
  visibility: hidden;
  min-width: 250px;
  background: rgba(91, 192, 235, 0.95);
  color: black;
  text-align: center;
  border-radius: 25px;
  padding: 12px;
  position: fixed;
  bottom: 30px;
  right: 30px;
  font-weight: 600;
  box-shadow: 0 0 12px rgba(91, 192, 235, 0.8);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

#toast.show {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(6px);
}

.modal-content {
  background: rgba(20, 30, 50, 0.95);
  padding: 25px;
  border-radius: 15px;
  text-align: center;
  color: #fff;
  width: 320px;
  box-shadow: 0 0 20px rgba(91, 192, 235, 0.6);
  animation: popIn 0.3s ease;
}

.modal-content img {
  width: 120px;
  height: 170px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 10px;
}

.modal-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 15px;
}

.modal-buttons button {
  padding: 8px 15px;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  font-weight: bold;
  transition: 0.3s;
}

.confirm {
  background: #5BC0EB;
  color: black;
}

.cancel {
  background: #333;
  color: white;
}

.modal-buttons button:hover {
  transform: scale(1.05);
}

@keyframes popIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.about-section {
  padding-top: 120px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  position: relative;
  z-index: 5;
  text-align: center;
}

.about-content {
  max-width: 900px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 30px rgba(91, 192, 235, 0.3);
}

.about-content h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.3rem;
  color: #fff;
  margin-bottom: 15px;
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.intro-text {
  color: #C9D6DF;
  font-size: 1.1rem;
  margin-bottom: 25px;
}

.highlight {
  color: #F38FFF;
  font-weight: bold;
}

.about-box {
  margin: 25px 0;
  padding: 20px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.03);
  text-align: left;
}

.about-box h2 {
  color: #5BC0EB;
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.about-box p,
.about-box ul {
  color: #D9E2EC;
  line-height: 1.6;
  font-size: 1rem;
}

.about-box ul li {
  margin: 6px 0;
}

.about-quote {
  margin-top: 40px;
  font-size: 1.2rem;
  font-style: italic;
  color: #F38FFF;
  background: rgba(255, 255, 255, 0.05);
  padding: 15px;
  border-radius: 15px;
}

footer {
  text-align: center;
  padding: 20px 0;
  color: #C9D6DF;
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.contact-section {
  padding-top: 120px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  position: relative;
  z-index: 5;
  text-align: center;
}

.contact-content {
  max-width: 500px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 30px rgba(91, 192, 235, 0.3);
}

.contact-content h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  margin-bottom: 10px;
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.contact-content p {
  color: #C9D6DF;
  font-size: 1rem;
  margin-bottom: 25px;
}

.contact-content form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-content input,
.contact-content textarea {
  padding: 12px 15px;
  border-radius: 15px;
  border: none;
  outline: none;
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  backdrop-filter: blur(8px);
  transition: 0.3s;
}

.contact-content input:focus,
.contact-content textarea:focus {
  background: rgba(91, 192, 235, 0.2);
  box-shadow: 0 0 10px #5BC0EB;
}

.contact-content input::placeholder,
.contact-content textarea::placeholder {
  color: #aaa;
}

.contact-content button {
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  border: none;
  padding: 12px;
  border-radius: 25px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.contact-content button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px #5BC0EB;
}

.success-msg {
  display: none;
  margin-top: 15px;
  color: #F38FFF;
  font-weight: 600;
}

@media (max-width: 600px) {
  .contact-content {
    padding: 20px;
  }

  .contact-content h1 {
    font-size: 1.6rem;
  }
}

.members-section {
  text-align: center;
  padding: 120px 40px;
  min-height: 100vh;
}

.members-section h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.members-section p {
  color: #ccc;
  margin-bottom: 40px;
  font-size: 1.1rem;
}

.members-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  justify-content: center;
}

.member-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  padding: 25px;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
  transition: 0.4s ease;
  text-align: left;
  position: relative;
}

.member-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.member-card h3 {
  margin-bottom: 5px;
  font-size: 1.3rem;
  color: #00bcd4;
}

.member-card p {
  margin: 5px 0;
}

.book-tag {
  display: inline-block;
  background: #00bcd4;
  color: white;
  padding: 4px 8px;
  border-radius: 12px;
  font-size: 0.85rem;
  margin-top: 8px;
}

footer {
  text-align: center;
  padding: 20px;
  color: white;
  font-size: 0.9rem;
  background: rgba(0, 0, 0, 0.5);
  margin-top: 60px;
}

header.scrolled {
  background-color: #000000 !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

.no-records {
  font-size: 1.1rem;
  color: #bbb;
  margin-top: 40px;
}

header.scrolled .logo,
header.scrolled nav a {
  color: #E0E0E0;
}

.logo {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  letter-spacing: 2px;
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
  padding-left: 25px;
}

nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
}

nav a {
  position: relative;
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  letter-spacing: 0.5px;
  transition: color 0.3s ease;
  padding-bottom: 4px;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  right: 0;
  width: 0%;
  height: 2.5px;
  background-color: white;
  transition: width 0.2s ease, right 0.9s ease;
}

nav a:hover::after {
  width: 100%;
  right: 0;
}

nav a:hover {
  color: #5BC0EB;
}

.hero {
  position: relative;
  height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  z-index: 5;
  overflow: hidden;
  padding-top: 80px;
}


.hero h1 {
  font-size: 3rem;
  font-family: 'Poppins', sans-serif;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: 0.5px;
}

.hero h1 span {
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.2rem;
  color: #C9D6DF;
  margin-bottom: 30px;
}

#enter-btn {
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  color: white;
  border: none;
  padding: 12px 28px;
  border-radius: 30px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#enter-btn:hover {
  box-shadow: 0 0 8px #5BC0EB;
}

.books-section {
  padding: 120px 60px;
  text-align: center;
  position: relative;
  z-index: 10;
}

.books-section h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.2rem;
  margin-bottom: 20px;
  color: #5BC0EB;
  letter-spacing: 1px;
}

.search-bar {
  margin: 20px auto 50px;
  display: flex;
  justify-content: center;
}

#searchInput {
  width: 300px;
  padding: 10px 15px;
  border: 2px solid #5BC0EB;
  border-radius: 8px;
  outline: none;
  font-size: 1rem;
  text-align: left;
}

.book-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 30px;
  justify-content: center;
}

.book-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  padding: 15px;
  text-align: center;
  transition: transform 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
  animation: fadeIn 0.6s ease forwards;
  margin: auto;
}

.book-card:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 15px rgba(91, 192, 235, 0.4);
}

.book-card img {
  width: 100%;
  height: 20rem;
  border-radius: 12px;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.book-card:hover img {
  transform: scale(1.05);
}

.book-card h3 {
  margin: 15px 0 5px;
  font-size: 1.1rem;
  color: #fff;
}

.book-card p {
  margin: 0;
  font-size: 0.9rem;
  color: #cfd6e1;
}

.tag {
  display: inline-block;
  background: #5BC0EB;
  color: black;
  font-weight: bold;
  font-size: 0.8rem;
  padding: 5px 10px;
  border-radius: 20px;
  margin-top: 8px;
}

.book-card button {
  display: inline-block;
  margin-top: 10px;
  margin-left: 10px;
  padding: 6px 15px;
  background: #5BC0EB;
  color: black;
  font-weight: bold;
  font-size: 0.85rem;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}

.book-card button:hover {
  background: #4aa0c9;
  transform: scale(1.05);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#toast {
  visibility: hidden;
  min-width: 250px;
  background: rgba(91, 192, 235, 0.95);
  color: black;
  text-align: center;
  border-radius: 25px;
  padding: 12px;
  position: fixed;
  bottom: 30px;
  right: 30px;
  font-weight: 600;
  box-shadow: 0 0 12px rgba(91, 192, 235, 0.8);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.4s ease;
}

#toast.show {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(6px);
}

.modal-content {
  background: rgba(20, 30, 50, 0.95);
  padding: 25px;
  border-radius: 15px;
  text-align: center;
  color: #fff;
  width: 320px;
  box-shadow: 0 0 20px rgba(91, 192, 235, 0.6);
  animation: popIn 0.3s ease;
}

.modal-content img {
  width: 120px;
  height: 170px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 10px;
}

.modal-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 15px;
}

.modal-buttons button {
  padding: 8px 15px;
  border: none;
  border-radius: 20px;
  cursor: pointer;
  font-weight: bold;
  transition: 0.3s;
}

.confirm {
  background: #5BC0EB;
  color: black;
}

.cancel {
  background: #333;
  color: white;
}

.modal-buttons button:hover {
  transform: scale(1.05);
}

@keyframes popIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

.about-section {
  padding-top: 120px;
  padding-bottom: 100px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  position: relative;
  z-index: 5;
  text-align: center;
}

.about-content {
  max-width: 900px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 30px rgba(91, 192, 235, 0.3);
}

.about-content h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.3rem;
  color: #fff;
  margin-bottom: 15px;
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.intro-text {
  color: #C9D6DF;
  font-size: 1.1rem;
  margin-bottom: 25px;
}

.highlight {
  color: #F38FFF;
  font-weight: bold;
}

.about-box {
  margin: 25px 0;
  padding: 20px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.03);
  text-align: left;
}

.about-box h2 {
  color: #5BC0EB;
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.about-box p,
.about-box ul {
  color: #D9E2EC;
  line-height: 1.6;
  font-size: 1rem;
}

.about-box ul li {
  margin: 6px 0;
}

.about-quote {
  margin-top: 40px;
  font-size: 1.2rem;
  font-style: italic;
  color: #F38FFF;
  background: rgba(255, 255, 255, 0.05);
  padding: 15px;
  border-radius: 15px;
}

footer {
  text-align: center;
  padding: 20px 0;
  color: #C9D6DF;
  font-size: 0.9rem;
  margin-top: 10px;
  position: relative;
  margin-bottom: 20px;
}

.contact-section {
  padding-top: 120px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  position: relative;
  z-index: 5;
  text-align: center;
}

.contact-content {
  max-width: 500px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 0 30px rgba(91, 192, 235, 0.3);
}

.contact-content h1 {
  font-family: 'Poppins', sans-serif;
  font-size: 2rem;
  margin-bottom: 10px;
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.contact-content p {
  color: #C9D6DF;
  font-size: 1rem;
  margin-bottom: 25px;
}

.contact-content form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-content input,
.contact-content textarea {
  padding: 12px 15px;
  border-radius: 15px;
  border: none;
  outline: none;
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  backdrop-filter: blur(8px);
  transition: 0.3s;
}

.contact-content input:focus,
.contact-content textarea:focus {
  background: rgba(91, 192, 235, 0.2);
  box-shadow: 0 0 10px #5BC0EB;
}

.contact-content input::placeholder,
.contact-content textarea::placeholder {
  color: #aaa;
}

.contact-content button {
  background: linear-gradient(90deg, #5BC0EB, #F38FFF);
  border: none;
  padding: 12px;
  border-radius: 25px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.contact-content button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px #5BC0EB;
}

.success-msg {
  display: none;
  margin-top: 15px;
  color: #F38FFF;
  font-weight: 600;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
  z-index: 1001;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: white;
  margin: 3px 0;
  transition: 0.3s;
  border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

@media (max-width: 480px) {

  header {
    flex-direction: row;
    justify-content: space-between;
    padding: 12px 15px;
    gap: 0;
    align-items: center;
  }

  .logo {
    font-size: 1.4rem;
    padding-left: 0;
    min-width: 120px;
    order: 1;
  }

  .hamburger {
    display: flex;
    padding: 3px;
    order: 2;
    margin-left: auto;
  }

  .hamburger {
    margin-right: 0;
  }

  .hamburger span {
    width: 22px;
    height: 2.5px;
    margin: 2.5px 0;
  }

  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    height: 100vh;
    background: rgba(10, 10, 30, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 80px;
    gap: 25px;
    transition: right 0.3s ease;
    z-index: 1000;
  }

  nav.active {
    right: 0;
  }

  nav a {
    font-size: 1rem;
    padding: 12px 20px;
    width: 80%;
    text-align: center;
    border-radius: 10px;
  }

  nav a::after {
    display: none;
  }

  .hero {
    padding-top: 0px;
    height: calc(100vh - 100px);
  }

  .hero h1 {
    font-size: 1.8rem;
    padding: 0 20px;
  }

  .hero p {
    font-size: 0.9rem;
    padding: 0 20px;
  }

  #enter-btn {
    padding: 10px 25px;
    font-size: 0.9rem;
  }

  .books-section {
    padding: 80px 15px 40px;
  }

  .books-section h2 {
    font-size: 1.6rem;
    margin-bottom: 20px;
  }

  #searchInput {
    width: 100%;
    max-width: 250px;
    padding: 8px 12px;
    font-size: 0.9rem;
  }

  .book-container {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 15px;
  }

  .book-card {
    padding: 12px;
  }

  .book-card img {
    height: 160px;
  }

  .book-card h3 {
    font-size: 0.95rem;
    margin: 10px 0 5px;
  }

  .book-card p {
    font-size: 0.8rem;
  }

  .book-card .tag {
    font-size: 0.75rem;
    padding: 5px 8px;
  }

  .book-card button {
    font-size: 0.75rem;
    padding: 5px 10px;
    width: auto;
  }

  .about-section {
    padding: 80px 15px 40px;
  }

  .about-content {
    padding: 20px 15px;
    margin: 0 10px;
  }

  .about-content h1 {
    font-size: 1.6rem;
  }

  .intro-text {
    font-size: 0.9rem;
  }

  .about-box {
    padding: 12px;
    margin: 15px 0;
  }

  .about-box h2 {
    font-size: 1.2rem;
  }

  .about-box p,
  .about-box ul {
    font-size: 0.9rem;
  }

  .contact-section {
    padding: 80px 15px 40px;
  }

  .contact-content {
    padding: 20px 15px;
    margin: 0 10px;
  }

  .contact-content h1 {
    font-size: 1.6rem;
  }

  .contact-content input,
  .contact-content textarea {
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  .contact-content button {
    padding: 10px 25px;
    font-size: 0.9rem;
  }

  .members-section {
    padding: 80px 15px 40px;
    overflow-x: auto !important;
  }

  .members-section h1 {
    font-size: 1.6rem;
  }


  .members-section table {
    font-size: 0.8rem;
  }

  th,
  td {
    padding: 6px;
  }

  .clear-btn {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

  .members-container {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .member-card {
    padding: 15px;
    margin: 0 5px;
  }

  .member-card h3 {
    font-size: 1.1rem;
  }

  .member-card p {
    font-size: 0.85rem;
  }

  .modal-content {
    width: 85%;
    max-width: 280px;
    padding: 20px 15px;
    margin: 15px;
  }

  .modal-content img {
    width: 100px;
    height: 140px;
  }

  .modal-buttons {
    flex-direction: column;
    gap: 8px;
  }

  .modal-buttons button {
    width: 100%;
  }

  #toast {
    min-width: 200px;
    bottom: 15px;
    right: 15px;
    left: 15px;
    font-size: 0.85rem;
    padding: 12px;
  }

  body.home-page footer {
    position: relative;
    padding: 15px 0;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  header {
    flex-direction: row;
    position: sticky;
    justify-content: space-between;
    padding: 18px 25px;
    gap: 0;
  }

  .logo {
    font-size: 1.6rem;
    padding-left: 0;
    min-width: 130px;
  }

  .hamburger {
    display: flex;
  }

  nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 60%;
    max-width: 300px;
    height: 100vh;
    background: rgba(10, 10, 30, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 80px;
    gap: 25px;
    transition: right 0.3s ease;
    z-index: 1000;
  }

  nav.active {
    right: 0;
  }

  nav a {
    font-size: 1.1rem;
    padding: 15px 25px;
    width: 80%;
    text-align: center;
    border-radius: 10px;
  }

  nav a::after {
    display: none;
  }

  .hero {
    padding-top: 0px;
    height: calc(100vh - 90px);
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .books-section {
    padding: 100px 25px 50px;
  }

  .books-section h2 {
    font-size: 1.8rem;
  }

  #searchInput {
    width: 300px;
  }

  .book-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    justify-items: center;
  }

  .book-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 15px;
    width: 200px;
    height: 100%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 15px rgba(91, 192, 235, 0.5);
  }

  .book-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
  }


  .book-card .tag {
    display: inline-block;
    margin-bottom: 8px;
    background: #00bcd4;
    color: #fff;
    padding: 6px 10px;
    border-radius: 5px;
    font-size: 0.8rem;
  }

  .book-card button {
    display: inline-block;
    font-size: 0.8rem;
    padding: 6px 10px;
    margin-top: 4px;
    border-radius: 5px;
    background: #00bcd4;
    color: #fff;
    border: none;
    cursor: pointer;
  }

  .about-section {
    padding: 100px 25px 50px;
  }

  .about-content {
    padding: 25px;
    margin: 0 15px;
  }

  .about-content h1 {
    font-size: 2rem;
  }

  .about-box {
    padding: 18px;
  }

  .contact-section {
    padding: 100px 25px 50px;
  }

  .contact-content {
    padding: 25px;
    margin: 0 15px;
  }

  .members-section {
    padding: 80px 3%;
  }

  .members-section h1 {
    font-size: 1.8rem;
  }

  .members-section p {
    font-size: 1rem;
  }

  .members-section table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  th,
  td {
    font-size: 0.85rem;
    padding: 8px;
  }

  .member-card {
    padding: 20px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {

  header {
    padding: 20px 35px;
    gap: 20rem;
  }

  .logo {
    font-size: 1.7rem;
    min-width: 140px;
  }

  .hamburger {
    display: none;
  }

  nav {
    position: static;
    width: auto;
    height: auto;
    background: none;
    backdrop-filter: none;
    flex-direction: row;
    padding: 0;
    gap: 35px;
    box-shadow: none;
  }

  nav a {
    font-size: 1rem;
    padding: 0;
    width: auto;
    text-align: left;
    border-radius: 0;
    background: none;
  }

  nav a::after {
    display: block;
  }

  .books-section {
    padding: 110px 40px 60px;
  }

  .book-container {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 25px;
  }

  .book-card img {
    height: 240px;
  }

  .about-section {
    padding: 110px 40px 60px;
  }

  .contact-section {
    padding: 110px 40px 60px;
  }

  .members-section {
    padding: 110px 40px 60px;
  }

  .members-container {
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
  }
}

@media (min-width: 1025px) and (max-width: 1440px) {
  header {
    gap: 25rem;
  }

  .books-section {
    padding: 120px 50px 70px;
  }

  .book-container {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
  }

  .book-card img {
    height: 260px;
  }

  .about-section,
  .contact-section,
  .members-section {
    padding: 120px 50px 70px;
  }
}

@media (min-width: 1441px) {
  header {
    gap: 30rem;
  }

  .hero h1 {
    font-size: 3.2rem;
  }

  .books-section {
    padding: 130px 60px 80px;
  }

  .book-container {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 35px;
  }

  .book-card img {
    height: 280px;
  }

  .about-section,
  .contact-section,
  .members-section {
    padding: 130px 60px 80px;
  }

  .about-content,
  .contact-content {
    max-width: 800px;
  }
}

@media (max-width: 480px) {
  .search-bar {
    margin: 20px auto;
  }

  .about-content,
  .contact-content,
  .member-card {
    margin: 0 auto;
  }

  .book-card {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .book-card button {
    width: 60px;
    margin: 6px 0;
    text-align: center;
  }

  .hamburger {
    top: 15px;
    right: 15px;
  }

  .contact-section {
    padding-top: 1px;
  }


}

@media (max-width:768px) {

  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 18px;
    gap: 0;
  }

  .logo {
    font-size: 1.4rem;
    padding-left: 0;
    margin-right: auto;
    text-align: left;
    margin-top: 10px;
  }

  .hamburger {
    position: absolute;
    right: 18px;
    top: 18px;
  }

  nav {
    margin-top: 60px;
  }

}