landing.css

* {
  margin-block-end: 0;
  margin-block-start: 0;
  box-sizing: border-box;
}

html {
  --pagination-active-color: #ec700e;

  --input-text-color: #352e48;
  --input-border-color: #e3e5ea;
  --input-focus-border-color: #7a6da0;
  --input-focus-stroke-color: #e2e1e6;

  --feedback-star-inactive-color: #94919c;
  --feedback-star-hover-color: #433d53;

  --font-family: "fontello", "Roboto", sans-serif;
}

body {
  margin: 0px;
  font-family: var(--font-family);
  background-color: var(--page-background-color);
}

section {
  width: 100%;
}

#doc-content {
  overflow-x: hidden;
}

.contents {
  /* Disable standard Doxygen content behavior */
  padding: 0 !important;
  margin: 12px 0px 0px 0px !important;
  max-width: unset !important;
}

.section {
  margin-top: 84px;
}

.section:first-child {
  margin-top: 0;
}

.container {
  max-width: 1242px;
  min-width: 375px;
  padding: 0 10px;
}

.mt {
  margin-top: 40px;
}

@media (max-width: 1241px) {
  .section {
    margin-top: 28px;
  }

  .container {
    max-width: 768px;
  }

  .mt {
    margin-top: 8px;
  }
}

@media (max-width: 767px) {
  .container {
    max-width: 375px;
    padding: 0 13px;
  }
}

h2 {
  margin-top: 0;
  font-size: 64px;
  font-weight: 500;
  color: var(--page-foreground-color);
  line-height: 1;
}

p {
  font-size: 22px;
  line-height: 32px;
  color: var(--page-foreground-color);
}

.paragraph {
  width: 650px;
}

label {
  width: 100%;
  display: block;
  font-size: 14px;
  line-height: 16px;
}

input,
textarea,
input::placeholder,
textarea::placeholder,
.paragraph_small {
  font-size: 16px;
  line-height: 22px;
}

button {
  border: 0;
  background-color: transparent;
  cursor: pointer;
  padding: 0px;
  line-height: 1;
}

input,
textarea {
  width: 100%;
  display: block;
  border: 0;
  background-color: transparent;
  color: var(--input-text-color);
}

textarea {
  resize: none;
}

input:focus,
textarea:focus {
  outline: 0;
}

.userver__title {
  font-family: "fontello", Tahoma, Geneva, Verdana, sans-serif;
  font-size: 66px;
  font-weight: 400;
  /* 🐙 usever is always written with a small letter */
  text-transform: lowercase;
}

.userver__title_p {
  font-size: 24px;
}

@media (max-width: 1241px) {
  h2 {
    font-size: 20px;
    line-height: 22px;
  }

  p {
    font-size: 14px;
    line-height: 22px;
  }

  .userver__title {
    font-size: 22px;
  }

  .userver__title_p {
    font-size: 16px;
  }
}

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

/* Disable scrollbar on smartphones */
@media (max-width: 1241px) {
  .main {
    overflow: hidden;
  }
}

a.button {
  color: #fff !important;
  background: var(--primary-color);
  display: inline-block;
  line-height: 1;
}

.button {
  padding: 20px 23px;
  text-transform: capitalize;
  border-radius: var(--border-radius-large);
  border: 0px;
  border: 2px solid var(--primary-color);
  background-color: var(--primary-color);
  font-size: 22px;
  font-weight: 500;
  font-family: var(--font-family);
  color: #fff;
  transition: background-color 0.3s, border-color 0.3s, color 0.3s;
  text-align: center;
}

@media (prefers-color-scheme: dark) {
  html:not(.light-mode) a.button {
    color: var(--color-white-1) !important;
  }

  html:not(.light-mode) .button {
    color: var(--color-white-1);
  }
}

html.dark-mode a.button {
  color: var(--color-white-1) !important;
}

html.dark-mode .button {
  color: var(--color-white-1);
}

a.button.button_outline {
  color: var(--page-foreground-color) !important;
}

.button.button_outline {
  padding: 20px 34px;
  color: var(--page-foreground-color);
  border-color: var(--page-foreground-color);
  background-color: transparent;
}

.button:active {
  border-color: var(--primary-dark-color);
  background-color: var(--primary-dark-color);
}

.button.button_outline:active {
  background-color: transparent;
  color: var(--primary-dark-color);
}

@media (hover: hover) {
  .button:hover {
    border-color: var(--primary-dark-color);
    background-color: var(--primary-dark-color);
  }

  a.button.button_outline:hover {
    color: var(--primary-dark-color) !important;
  }

  .button.button_outline:hover {
    background-color: transparent;
    color: var(--primary-dark-color);
  }
}

.input {
  padding: 3px;
  margin-left: -3px;
}

.input:has(input:focus),
.input:has(textarea:focus) {
  border-radius: var(--border-radius-large);
  background-color: var(--input-focus-stroke-color);
  transition: background-color 0.3s;
}

.input>input,
.input>textarea {
  padding: 7px 10px;
  border: 2px solid var(--input-border-color);
  border-radius: var(--border-radius-large);
  background-color: var(--page-background-color);
  position: relative;
  transition: border 0.3s;
}

.input>input:focus,
.input>textarea:focus,
.input>input:hover,
.input>textarea:hover {
  border-color: var(--input-focus-border-color);
}

.input+label {
  margin-top: 12px;
}

@media (max-width: 767px) {
  .button {
    font-size: 16px;
    line-height: 22px;
    padding: 14px 21.5px;
    border-width: 1px;
  }

  .button.button_outline {
    padding: 15px 35.5px;
  }
}

.info {
  display: flex;
  justify-content: center;
}

.info__block {
  flex: 1;
  padding-top: 84px;
}

.info__header {
  position: relative;
  height: 190px;
}

.info__title,
.info__logo::after {
  min-height: 350px;
  min-width: 1050px;
  mask: url("title.svg") no-repeat center;
  -webkit-mask: url("title.svg") no-repeat center;
  mask-size: contain;
  -webkit-mask-size: contain;
  z-index: -1;
}

.info__title {
  position: absolute;
  display: block;
  background-color: var(--page-foreground-color);
  top: 17px;
  left: -1px;
}

.info__logo,
.info__logo::before {
  min-width: 562px;
  min-height: 562px;
}

.info__logo {
  position: absolute;
  display: block;
  top: -84px;
  right: -200px;
  border-radius: 280px;
  transition: background-color 0.3s;
}

#landing_logo_id {
  background-color: var(--primary-color);
}

#landing_logo_id:hover {
  background-color: var(--primary-dark-color);
}

.info__logo::before {
  content: "";
  position: absolute;
  display: block;
  background-image: url("logo_landing.svg");
  background-repeat: no-repeat;
  background-size: contain;
  bottom: -1.9px;
}

.info__logo::after {
  content: "";
  position: absolute;
  display: block;
  background-color: #282431;
  top: 101px;
  left: -834px;
  z-index: 2;
  clip-path: inset(149.5px 0px 0px 834.5px);
}

.info__buttons>.button:last-child {
  margin-left: 24px;
}

@media (max-width: 1241px) {
  .info__block {
    padding-bottom: 0;
  }

  .info__header {
    height: 130px;
  }

  .info__title,
  .info__logo::after {
    min-width: 640px;
  }

  .info__title {
    top: -51px;
  }

  .info__logo,
  .info__logo::before {
    min-width: 355px;
    min-height: 355px;
  }

  .info__logo {
    top: -73px;
    right: -112px;
  }

  .info__logo::before {
    bottom: -0.9px;
  }

  .info__logo::after {
    top: 22px;
    left: -506px;
    clip-path: inset(159px 0px 0px 506px);
  }

  .info__paragraph {
    max-width: 500px;
  }

  .info__paragraph,
  .info__buttons {
    margin-top: 20px;
  }
}

@media (max-width: 767px) {
  .info__block {
    padding-top: 26px;
  }

  .info__header {
    height: 70px;
  }

  .info__title,
  .info__logo::after {
    min-height: 100px;
  }

  .info__title {
    top: 25px;
    left: -172px;
  }

  .info__logo,
  .info__logo::before {
    min-width: 146px;
    min-height: 146px;
  }

  .info__logo {
    top: -4px;
    right: -40px;
  }

  .info__logo::after {
    top: 29px;
    left: -415px;
    clip-path: inset(42px 0px 0px 414.8px);
  }

  .info__paragraph {
    max-width: 235px;
  }

  .info__buttons {
    margin-top: 24px;
    display: flex;
  }

  .info__buttons>.button {
    flex: 1;
    padding-right: 0;
    padding-left: 0;
  }

  .info__buttons>.button:last-child {
    margin-left: 8px;
  }
}

.how__info {
  line-height: 27px;
  margin-top: 24px;
}

.how__codeblocks {
  display: flex;
  flex-direction: row;
}

.codeblock {
  flex: 1;
}

.codeblock_overflow {
  overflow: hidden;
}

.codeblock>.codeblock__header {
  background-color: var(--primary-color-2);
}

.codeblock>.codeblock__body {
  background-color: var(--primary-color-1);
}

.codeblock.codeblock_grey>.codeblock__header {
  background-color: var(--secondary-color-1);
}

.codeblock.codeblock_grey>.codeblock__body {
  background-color: var(--secondary-color-2);
}

.codeblock__header {
  font-size: 42px;
  padding: 32px 8px;
  border-radius: var(--border-radius-large);
}

.codeblock__header>.userver__title {
  font-size: 42px;
}

.codeblock__body {
  margin-top: 8px;
  padding: 36px 8px;
  border-radius: var(--border-radius-large);
  background-color: transparent;
  border: 0;
  font-size: 16px;
  line-height: 22px;
  height: 302px;
}

.codeblock_cpp {
  margin-left: 16px;
}

.codeblock_overflow>.codeblock__body {
  position: relative;
  padding-bottom: 0;
}

.codeblock_overflow>.codeblock__body:before {
  content: "";
  width: 100%;
  height: 50px;
  position: absolute;
  left: 0;
  bottom: 0;
  background: linear-gradient(transparent, var(--primary-color-1));
  border-radius: 0px 0px var(--border-radius-large) var(--border-radius-large);
  opacity: 0.7;
}

#intro_sample {
  background-color: var(--primary-color-1);
  margin-top: 40px;
  padding-left: 36px;
  padding-bottom: 18px;
  border-radius: var(--border-radius-large);
}

@media (max-width: 1241px) {
  .how__info {
    margin-top: 8px;
  }

  .how__codeblocks {
    justify-content: center;
  }

  .codeblock {
    flex: 0;
  }

  .codeblock_userver>.codeblock__header {
    display: none;
  }

  .codeblock_userver>.codeblock__body {
    margin-top: 0;
  }

  .codeblock__body {
    padding: 36px 81px;
    height: auto;
  }

  .codeblock_cpp {
    display: none;
  }

  #intro_sample {
    display: none;
  }
}

@media (max-width: 767px) {
  .how__info {
    width: 310px;
    line-height: 24px;
  }

  .codeblock__body {
    font-size: 9px;
    line-height: 14px;
    padding: 10px;
  }
}

.values__cards {
  display: grid;
  grid-auto-rows: 1fr;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.values__card {
  padding: 46px 42px;
  border: 1px solid var(--separator-color);
  border-radius: var(--border-radius-large);
  display: flex;
  align-items: center;
  flex-direction: column;
}

@media (prefers-color-scheme: dark) {
  html:not(.light-mode) .values__card {
    background-color: var(--primary-color-3);
  }
}

html.dark-mode .values__card {
  background-color: var(--primary-color-3);
}

.values__icon {
  margin-top: 13px;
}

.thumbnail {
  width: 36px;
  height: 36px;
  background-color: var(--primary-color);
  mask-size: contain;
  -webkit-mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-position: center;
}

.thumbnail_debugging {
  mask-image: url("debugging.svg");
  -webkit-mask-image: url("debugging.svg");
}

.thumbnail_modern {
  mask-image: url("modern.svg");
  -webkit-mask-image: url("modern.svg");
}

.thumbnail_asynchronous {
  mask-image: url("asynchronous.svg");
  -webkit-mask-image: url("asynchronous.svg");
}

.thumbnail_plane {
  mask-image: url("plane.svg");
  -webkit-mask-image: url("plane.svg");
}

.thumbnail_tools {
  mask-image: url("tools.svg");
  -webkit-mask-image: url("tools.svg");
}

.thumbnail_abstractions {
  mask-image: url("abstractions.svg");
  -webkit-mask-image: url("abstractions.svg");
}

.values__cardinfo {
  margin-top: 35px;
  font-size: 16px;
  line-height: 22px;
}

@media (max-width: 1241px) {
  .values__cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .values__cards {
    grid-template-columns: 1fr;
  }

  .values__card {
    padding: 24px;
  }

  .values__cardinfo {
    font-size: 14px;
  }
}

.companies__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.logo {
  background-color: var(--page-foreground-color);
  mask-size: contain;
  -webkit-mask-size: contain;
  mask-repeat: no-repeat;
  -webkit-mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-position: center;
  width: 150px;
  height: 100px;
  transition: filter 0.3s;
}

@media (hover: hover) and (prefers-color-scheme: dark) {
  .logo:hover {
    filter: brightness(0.7);
  }
}

@media (hover: hover) {
  .logo:hover {
    filter: brightness(2.5);
  }

  html.dark-mode .logo:hover {
    filter: brightness(0.7);
  }
}

.logo_uber {
  mask-image: url("uber.svg");
  -webkit-mask-image: url("uber.svg");
}

.logo_delivery {
  mask-image: url("delivery.svg");
  -webkit-mask-image: url("delivery.svg");
}

.logo_yago {
  mask-image: url("yago.svg");
  -webkit-mask-image: url("yago.svg");
}

.logo_matchmaker {
  mask-image: url("matchmaker.svg");
  -webkit-mask-image: url("matchmaker.svg");
  width: 63px;
}

@media (max-width: 767px) {
  .companies__logos {
    justify-content: space-around;
    gap: 0;
  }

  .logo {
    width: 80px;
  }

  .logo_matchmaker {
    width: 43px;
  }
}

.feedback {
  background-color: rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: center;
  border-radius: var(--border-radius-large) var(--border-radius-large) 0px 0px;
}

.feedback__wrapper {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 24px;
}

.feedback__info {
  margin-top: 24px;
}

.feedback__form {
  margin-top: 26px;
}

.feedback__stars {
  border: 0;
  display: flex;
  padding: 11px 0;
  width: min-content;
  margin: 0;
  margin-left: -3px;
}

.feedback__stars>input {
  -webkit-appearance: none;
  appearance: none;
  box-shadow: none;
  margin: 0;
  width: auto;
}

.feedback__star::after {
  content: '\2605';
  font-size: 64px;
  cursor: pointer;
}

.feedback__star:invalid::after,
.feedback__stars:hover .feedback__star:hover~.feedback__star:invalid::after,
.feedback__stars .feedback__star:focus~.feedback__star:invalid::after {
  color: var(--feedback-star-inactive-color);
}

.feedback__stars:hover .feedback__star:invalid::after,
.feedback__stars:focus-within .feedback__star:invalid::after {
  color: var(--feedback-star-hover-color);
}

.feedback__stars .feedback__star:valid {
  color: var(--primary-color);
}

.feedback__stars .feedback__star:checked~.feedback__star:not(:checked)::after {
  content: '\2606';
  color: var(--feedback-star-inactive-color);
}

.feedback__button {
  margin-top: 24px;
  display: block;
  width: max-content;
  opacity: 0;
  transition: background-color 0.3s, border-color 0.3s, color 0.3s, opacity 0.5s;
}

.feedback__stars:valid+.feedback__button {
  opacity: 1;
}

@media (max-width: 767px) {
  .feedback__wrapper {
    padding-top: 24px;
  }

  .feedback__stars {
    padding: 8px 0;
  }

  .feedback__star::after {
    content: '\2605';
    font-size: 54px;
  }

  .feedback__image {
    height: 150px;
  }
}