@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100..900;1,100..900&display=swap');
:root {
  --primary-color :#ccff00;
  --primary-color-hover : #c1ef07;
  --background-color :#d9dbd1;
  --text-color :#212529;
  --footer-color :#212529;
  --placeholder-color: #96b12b;
  --selection-color: #dadeca;
  --selection-background-color: #000000;
  --border-color: #121212;
  --section-background-color: #f8f9fa;
  --button-color: #121212;
  --delete-button-background-color: #FF073A;
  --delete-button-box-shadow:0 0 10px #FF073A;
  --delete-button-background-color-hover: #ff0000;
  --toggle-button-box-shadow:0 0 10px #c1ef07;
  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --primary-color :#ccff00;
  --primary-color-hover : #c1ef07;
  --background-color: #3f3f3f;
  --text-color :#121212;
  --h1-text-color : #121212;
  --footer-color: #ccff00;
  --placeholder-color: #96b12b;
  --selection-color: #000000;
  --selection-background-color: #ffffff;
  --border-color: #f8f9fa;
  --button-color: #f8f9fa;
  --section-background-color: #a6cb14;
  --delete-button-background-color: #FF073A;
  --delete-button-box-shadow:0 0 10px #FF073A;
  --delete-button-background-color-hover: #ff0000;
  --toggle-button-box-shadow:0 0 10px #c1ef07;
  --transition: all 0.3s ease;
}

::selection {
  color: var(--selection-color);
  background-color: var(--selection-background-color);
}

*{
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: sans-serif;
  list-style-type: none;
  text-decoration: none;
}

body {
  background-color: var(--background-color);
  transition: background-color .3s ease, color .3s ease;
  color: var(--text-color);
}

header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

#nav-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

#h1-header {
  padding: 10px;
  color: var(--h1-text-color);
  border-radius: 10px 0 10px 0;
  border: 3px solid var(--border-color);
  background-color: var(--primary-color);
  transition: var(--transition);
}

#h1-header:hover {
  transform: scale(1.1); 
}


#ul-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.social-media {
  color: var(--button-color);
  text-decoration: none;
  font-size: 24px;
  transition: all 0.3s ease; 
}

.social-media:hover {
  transform: scale(1.5);
  text-shadow: 
    0 0 5px var(--background-color), 
    0 0 10px var(--background-color), 
    0 0 20px var(--primary-color), 
    0 0 30px var(--primary-color),
    0 0 40px var(--primary-color);
  color: #fff;
}

#theme-button {
  color: var(--button-color); 
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

#theme-button:hover {
  /* text-shadow: horizontal vertical blur warna */
  transform: scale(1.5);
  text-shadow: 
    0 0 5px var(--background-color), 
    0 0 10px var(--background-color), 
    0 0 20px var(--primary-color), /* Warna cahaya */
    0 0 30px var(--primary-color),
    0 0 40px var(--primary-color);
  color: #fff;
}
main {
  max-width: 700px;
  width: 80%;
  margin: 0 auto;
}

#input-section {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 10px ;
  border: 3px solid var(--border-color);
  padding: 30px 50px;
  gap: 20px;
  transition: var(--transition);
  background-color: var(--section-background-color);
}



#form-input-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-direction: column;
  font-weight: 600;
  width: 100%;
  gap: 20px;
}

.div-input {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 10px;
}

.text-input {
  font-size: 20px;
}

.required {
  color: red;
}

.input-form {
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 16px;
}

input[placeholder]::placeholder {
color: var(--placeholder-color);
}

.div-input-isRead {
  display: flex;
  justify-content: center;
  width: 100%;
  gap: 20px;
}

#isRead {
  transform: scale(2);
}

button {
  cursor: pointer;
}

.submit-button {
  padding: 10px 15px;
  border-radius: 10px 0 10px 0;
  border: 3px solid var(--text-color);
  background-color: var(--primary-color);
  font-weight: 600;
  transition: var(--transition);
}

.submit-button:hover {
  transform: scale(1.1); 
  color: var(--text-color);
  background-color: var(--primary-color);
  box-shadow: var(--toggle-button-box-shadow);
}

#search-section {
  margin-top: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border-radius: 10px ;
  border: 3px solid var(--border-color);
  padding: 30px 50px;
  width: 100%;
  gap: 20px;
  background-color: var(--section-background-color);
}

#form-search-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

#div-search {
  display: flex;
  align-items: center;
  justify-content: space-around;
  width: 100%;
  gap: 10px;
}

#search-title {
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 16px;
  width: 100%;
}

#search-button {
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 10px 0 10px 0;
  border: 3px solid var(--text-color);
  background-color: var(--primary-color);
  transition: var(--transition);
}

#search-button:hover {
  transform: scale(1.1);
  color: var(--text-color);
  box-shadow: var(--toggle-button-box-shadow);
}

#bookshelf-read-section {
  margin-top: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  padding: 30px 50px;
  max-width: 100%;
  width: 100%;
  border-radius: 10px;
  border: 3px solid var(--border-color);
  background-color: var(--section-background-color);
}

#read-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: inherit;
  gap: 20px;
  border-radius: 10px;
}

.card-book {
  padding: 30px;
  width: inherit;
  border-radius: 10px;
  border: 3px solid var(--border-color);
  font-size: 18px;
  font-weight: 600;
  line-height: .6cm;
}
.delete-button{
  padding: 10px 20px;
  border-radius: 10px 0 10px 0;
  border: 3px solid var(--text-color);
  background-color: var(--delete-button-background-color);
  font-weight: 600;
  color: var(--background-color);
  transition: var(--transition);
  margin: 10px 10px 0 0;
}

.delete-button:hover {
  transform: scale(1.1);
  background-color: var(--delete-button-background-color-hover);
  box-shadow: var(--delete-button-box-shadow);
  color: var(--text-color);
}

.toggle-button {
  padding: 10px 20px;
  border-radius: 10px 0 10px 0;
  font-weight: 600;
  border: 3px solid var(--text-color);
  background-color: var(--primary-color);
  transition: var(--transition);
}

.toggle-button:hover {
  transform: scale(1.1);
  background-color: var(--primary-color);
  color: var(--text-color);
  box-shadow: var(--toggle-button-box-shadow);
}

#bookshelf-unread-section {
  margin-top: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  padding: 30px 50px;
  max-width: 100%;
  width: 100%;
  border-radius: 10px;
  border: 3px solid var(--border-color);
  background-color: var(--section-background-color);
}

#unread-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: inherit;
  gap: 20px;
  border-radius: 10px;
}

footer {
  max-width: 100%;
  width: 80%;
  margin: 2.6% auto;
  text-align: center;
  color: var(--footer-color);
}

@media screen and (max-width: 768px) {
  #input-section{
    padding: 20px 30px;
  }
  #search-section{
    padding: 20px 30px;
  }
  #bookshelf-read-section{
    padding: 20px 30px;
  }
  #bookshelf-unread-section{
    padding: 20px 30px;
  }
  .card-book {
    padding: 20px;
  }
}