body {
  font-family:  Montserrat, Arial;
  background-color: rgb(238, 236, 236);
}

p {
  margin: 0;
}

main {
  margin: 4%;
}

.row {
  margin: 0;
}

header nav {
  background-color: rgb(23, 154, 183);
  color: white;
}

#logo, .nav-link, #catalog-categories-list li a,
#catalog-page-navigation a, #catalog-categories-mobile-list li a,
#password-help a, #login-admin a {
  color: inherit;
  text-decoration: none;
}

#logo {
  font-size: 20px; 
  font-weight: 800;
}

.nav-link {
  font-size: 16px; 
  font-weight: 600;
}

.active {
  font-weight: 900 !important;
  text-decoration: underline;
  text-decoration-skip-ink: none;
  color: white !important;
}

#cart-icon {
  transition: border-color 0.15s;
}

.active-icon #cart-icon {
  border-width: 1px;
  border-style: solid;
  border-color: white;
}

#search-bar {
  min-width: 94px;
}

#search-bar::placeholder {
  font-size: 14px; 
  font-weight: 400;
  color: rgb(145, 141, 141);
}

header nav a {
  transition: color 0.15s;
}

header nav a:hover {
  color: rgb(6, 69, 173) !important;
}

#cart-icon:hover {
  border-width: 1px;
  border-style: solid;
  border-color: white;
}

.active-icon #cart-icon:hover {
  border-color: rgb(6, 69, 173);
}

.main-page-section-title {
  min-height: 32px;
}

.main-page-section-title-text {
  font-size: 20px; 
  font-weight: 700;
}

.main-page-price {
  font-size: 14px; 
  font-weight: 700;
}

.main-page-book-title {
  font-size: 11px; 
  font-weight: 500;
}

.main-page-author {
  font-size: 11px; 
  font-weight: 500;
  color: rgb(97, 95, 95);
}

#product-card-order-container {
  width: 294px;
}

#product-card-book-name {
  font-size: 26px; 
  font-weight: 600;
}

#product-card-author {
  font-size: 16px; 
  font-weight: 600;
  color: rgb(14, 173, 208)
}

#product-card-characteristics {
  font-size: 16px; 
}

#product-card-characteristics dt {
  color: rgb(97, 95, 95);
  font-weight: 600 !important;
  padding-left: 0;
}

#product-card-characteristics dd {
  padding-left: 0;
  font-weight: 700;
}

#product-card-text-available {
  font-size: 21px; 
  font-weight: 600;
  color: rgb(80, 176, 84);
}

#product-card-price {
  font-size: 28px; 
  font-weight: 600;
}

#product-card-button-add {
  font-size: 21px; 
  font-weight: 600;
  color: white;
  background-color: rgb(23, 154, 183);
  transition: opacity 0.25s;
}

#product-card-button-add:hover {
  opacity: 0.85;
}

.product-card-book-description-h {
  font-size: 18px; 
  font-weight: 700;
}

.product-card-book-description-text {
  font-size: 18px; 
  font-weight: 500;
}

#contacts-title {
  font-size: 30px; 
  font-weight: 900;
}

.contacts-item {
  font-weight: 900;
}

.contacts-item-main-info {
  font-size: 20px; 
}

.contacts-item-clarification {
  font-size: 16px; 
  color: rgb(145, 141, 141);
}

#skype-link {
  font-size: 20px;
  font-weight: 900;
  color: rgb(6, 69, 173);
}

#contacts-address {
  font-size: 20px;
  font-weight: 900;
}

#contacts-address-value {
  font-size: 16px;
  font-weight: 600;
}

#cart-title {
  font-size: 36px;
  font-weight: 900;
}

#cart-items-num-text {
  font-size: 24px;
  font-weight: 900;
}

.cart-button-remove {
  font-size: 18px;
  font-weight: 700;
  color: rgb(145, 141, 141);
  transition: color 0.15s;
}

.cart-button-remove:hover {
  color: blue;
}

.cart-book-description {
  font-weight: 500;
}

.cart-book-description-title {
  font-size: 20px;
}

.cart-book-description-author {
  font-size: 16px;
  color: rgb(145, 141, 141);
}

.button-minus, .button-plus {
  font-size: 20px;
  font-weight: 600;
  width: 32px;
  height: 34px;
  color: rgb(145, 141, 141);
  transition: background-color 0.15s, color 0.15s;
}

.button-minus:hover, .button-plus:hover {
  background-color: rgb(114, 187, 5) !important;
  color: white;
}

.cart-input-label {
  width: 42px;
  height: 34px;
}

.cart-input {
  font-size: 16px;
  font-weight: 900;
  border-color: rgb(222, 226, 230) !important;
}

.cart-input::placeholder {
  color:black;
}

.cart-price {
  font-size: 18px;
  font-weight: 700;
}

#cart-final-price {
  font-weight: 700;
}

#cart-final-price-text {
  font-size: 24px;
}

#cart-final-price-value {
  font-size: 20px;
}

#cart-btn-checkout {
  font-size: 18px;
  font-weight: 700;
  background-color: rgb(217, 217, 217);
  transition: opacity 0.25s;
}

#cart-btn-checkout:hover {
  opacity: 0.85;
}

#catalog-categories, #catalog-categories-mobile {
  border-color: rgb(23, 154, 183) !important;
}

#catalog-categories-title, #catalog-categories-mobile-title {
  font-weight: 700;
}

#catalog-categories-title  {
  font-size: 24px;
}

#catalog-categories-list, #catalog-categories-mobile-list {
  font-weight: 500;
  color:rgb(6, 69, 173) !important;
}

#catalog-categories-list {
  font-size: 14px;
}

.active-category, .active-category-mobile {
  font-weight: 700;
}

#catalog-categories-mobile-title {
  font-size: 48px;
}

#catalog-categories-mobile-list {
  font-size: 24px;
}

#catalog-title {
  font-size: 40px;
  font-weight: 900;
}

#catalog-select {
  font-size: 14px;
  font-weight: 500;
  width: 264px;
  height: 35px;
}

.catalog-price {
  font-size: 18px;
  font-weight: 700;
}

.catalog-book-title,
.catalog-author {
  font-size: 12px;
  font-weight: 600;
}

.catalog-bth-checkout {
  font-size: 14px;
  font-weight: 600;
  background-color: rgb(217, 217, 217);
  transition: background-color 0.15s, color 0.15s;
}

.catalog-bth-checkout:hover {
  background-color: rgb(114, 187, 5) !important;
  color: white;
}

#catalog-page-navigation {
  font-size: 20px;
  font-weight: 700;
}
 
#catalog-selected-page {
  color: rgb(80, 176, 84) !important;
}

#catalog-page-navigation a {
  transition: color 0.15s;
}

#catalog-page-navigation a:hover {
  color: rgb(0, 0, 238) !important;
}

#catalog-section-navigation {
  font-size: 16px; 
}

#login-input-email, #login-input-password,
#reg-input-name, #reg-input-email, .reg-input-password {
  font-size: 16px;
  min-width: 165px;
}

#login-title, #reg-title {
  font-size: 24px; 
  font-weight: 900;
}

#login-btn, #reg-btn {
  font-size: 16px; 
  font-weight: 900;
  background-color: rgb(6, 69, 173);
  transition: opacity 0.25s;
  min-width: 160px;
}

#login-btn:hover, #reg-btn:hover {
  opacity: 0.85;
}

#password-help, #login-admin {
  font-size: 16px;
  font-weight: 900;
  color: rgb(145, 141, 141);
}

#add-btn {
  min-width: 150px;
}

footer {
  background-color: rgb(23, 154, 183);
  color: white;
  min-height: 60px;
}

#footer-container {
  min-height: 60px;
}

#footer-row {
  min-height: 60px;
}

#footer-copyright {
  font-size: 24px; 
  font-weight: 900;
}

#footer-phone-number-text {
  font-size: 20px; 
  font-weight: 900;
}

#footer-social-media-text {
  font-size: 19px; 
  font-weight: 900;
}

@media (min-width: 992px) and (max-width: 1200px) {
  #logo {
    margin-right: 25px !important;
  }

  .header-link {
    margin-right: 10px !important;
  }

  #header-contacts, #header-search {
    margin-right: 20px !important;
  }
}

@media (min-width: 992px) {
  header nav {
      height: 60px;
  }

  main {
    margin: 2%;
  }
}

@media (max-width: 1200px) {
  #catalog-categories-list {
    font-size: 12px;
  }

  .active-category {
    font-size: 11px;
  }

  #catalog-categories-title {
    font-size: 18px;
  }
  
  #catalog-title {
    font-size: 36px;
  }
}


@media (max-width: 992px) {
  #catalog-categories-title {
    font-size: 16px;
  }
  
  #catalog-categories-list {
    font-size: 11px;
  }

  .active-category {
    font-size: 10px;
  }

  #catalog-title {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  #product-card-characteristics {
    display: inline-block;
  }

  #product-card-characteristics dt,
  #product-card-characteristics dd {
    text-align: left;
    padding-right: 0;
  }
}

@media (max-width: 576px) {
  .cart-book-cover {
    width: 66px;
    height: 104px;
  }

  .cart-button-remove {
    font-size: 0 !important;
  }

  .catalog-book-description, .catalog-btn-checkout-div {
    margin-left: 15%;
  }

  #admin-title {
    font-size: 18px !important;
  }
}

@media (max-width: 510px) {
  #login-input-email, #login-input-password,
  #login-btn, #password-help, #login-admin {
    font-size: 12px;
  }

  #reg-input-name, #reg-input-email,
  .reg-input-password, #reg-btn {
    font-size: 12px;
  }
  
  #login-title, #reg-title {
    font-size: 20px; 
  }
}

@media (max-width: 475px) {
  #cart-title {
    font-size: 30px;
  }
  
  #cart-items-num-text, #cart-final-price-text  {
    font-size: 20px;
  }

  .cart-book-description-title, #cart-final-price-value  {
    font-size: 16px;
  }
  
  .cart-book-description-author {
    font-size: 12px;
  }

  .cart-price, #cart-btn-checkout,
  .cart-input {
    font-size: 14px;
  }
  
  .button-minus, .button-plus {
    font-size: 16px;
    width: 26px;
    height: 28px;
  }
  
  .cart-input-label {
    width: 34px;
    height: 28px;
  }

  #catalog-categories-mobile-title {
    font-size: 44px;
  }
  
  #catalog-categories-mobile-list {
    font-size: 18px;
  }

  #image-preview {
    width: 300px;
    height: 450px;
  }
}

@media (max-width: 400px) {
  .main-page-book-title, .main-page-author {
    font-size: 0 !important;
  }

  .main-page-book-cover {
    width: 80px;
    height: 122px;
  }

  #footer-copyright {
    font-size: 20px !important;
  }

  #footer-phone-number-text {
    font-size: 18px !important;
  }

  #footer-social-media-text {
    font-size: 0 !important;
    margin-right: 0 !important;
  }

  #catalog-section-navigation {
    font-size: 12px; 
  }

  #login-btn, #password-help, #login-admin,
  .reg-input-password, #reg-btn {
    font-size: 16px;
  }

  #reg-input-name, #reg-input-email,
  #login-input-email, #login-input-password {
    font-size: 14px;
  }

  #login-title, #reg-title {
    font-size: 20px; 
  }
}

@media (max-width: 361px) {
  #logo {
    font-size: 0 !important;
  }

  .contacts-icon {
    width: 55px !important;
    height: 55px !important;
  }

  #contacts-title {
    font-size: 22px; 
  }
  
  .contacts-item-main-info, #skype-link,
  #contacts-address {
    font-size: 14px; 
  }
  
  .contacts-item-clarification, #contacts-address-value {
    font-size: 12px; 
  }

  #catalog-title {
    font-size: 20px;
  }

  #catalog-select {
    font-size: 11px;
    width: 164px;
    height: 28px;
    padding: 5px;
  }

  #image-preview {
    width: 200px;
    height: 300px;
  }
}

@media (max-width: 335px) {
  #cart-title {
    font-size: 24px;
  }
  
  #cart-items-num-text {
    font-size: 14px;
  }

  .cart-book-description-title, #cart-final-price-value  {
    font-size: 10px;
  }
  
  .cart-book-description-author {
    font-size: 8px;
  }
  
  #cart-final-price-text {
    font-size: 12px;
  }
  
  .button-minus, .button-plus {
    font-size: 10px;
    width: 16px;
    height: 18px;
  }
  
  .cart-input-label {
    width: 22px;
    height: 18px;
  }
  
  .cart-input, #cart-btn-checkout,
  .cart-price {
    font-size: 9px;
  }

  .trash-icon {
    width: 16px;
    height: 16px;
  }

  .cart-book-cover {
    width: 44px;
    height: 69px;
  }
}

@media (max-width: 320px) {
  #product-card-price {
    font-size: 22px !important; 
  }

  #novelty-icon {
    width: 74px !important;
    height: 25px !important;
  }

  #discont-icon {
    width: 49px !important;
    height: 25px !important;
  }

  .product-card-book-description-h, .product-card-book-description-text,
  #product-card-button-add, #product-card-text-available {
    font-size: 16px !important; 
  }

  #catalog-section-navigation {
    font-size: 11px; 
  }

  #catalog-categories-mobile-title {
    font-size: 38px;
  }
  
  #catalog-categories-mobile-list {
    font-size: 16px;
  }
}

@media (max-width: 282px) {
  #footer-copyright {
    font-size: 14px !important;
  }

  #footer-phone-number-text {
    font-size: 12px !important;
  }

  #admin-title {
    font-size: 16px !important;
  }
}

@media (max-width: 272px) {
  #fire-icon {
    height: 38px;
    width: 30px;
  }

  .catalog-book-description, .catalog-btn-checkout-div {
    margin-left: 0;
  }

  .contacts-icon {
    width: 44px !important;
    height: 44px !important;
    margin-right: 20px !important;
  }

  #contacts-title {
    font-size: 16px; 
  }
  
  .contacts-item-main-info, #skype-link
  #contacts-address {
    font-size: 11px; 
  }

  #catalog-title {
    font-size: 16px;
  }

  #catalog-select {
    width: 140px;
    height: 22px;
    padding: 5px;
  }

  #catalog-select, #contacts-address-value, 
  .contacts-item-clarification {
    font-size: 9px;
  }

  #catalog-page-navigation {
    font-size: 15px;
    font-weight: 700;
  }

  #catalog-section-navigation {
    font-size: 11px; 
  }

  #catalog-categories-mobile-title {
    font-size: 26px;
  }
  
  #catalog-categories-mobile-list {
    font-size: 13px;
  }

  #image-preview {
    width: 155px;
    height: 235px;
  }
}

@media (max-width: 204px) {
  #footer-copyright {
    font-size: 13px !important;
  }

  #footer-phone-number-text {
    font-size: 11px !important;
  }
}