*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: #202124;
  background: #fff;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

.layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-banner {
  --announcement-height: 36px;
  position: relative;
  height: var(--announcement-height);
  background: #f8f9fa;
  border-bottom: 1px solid #e8eaed;
}

.site-banner__scene {
  height: 100%;
  overflow: hidden;
  perspective: 480px;
}

.site-banner__cube {
  position: relative;
  width: 100%;
  height: var(--announcement-height);
  transform-style: preserve-3d;
  transform-origin: center center;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.site-banner__cube.is-animating-next {
  transform: rotateX(-90deg);
}

.site-banner__face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.site-banner__face--front {
  transform: rotateX(0deg) translateZ(calc(var(--announcement-height) / 2));
}

.site-banner__face--bottom {
  transform: rotateX(90deg) translateZ(calc(var(--announcement-height) / 2));
}

.site-banner__text {
  display: block;
  max-width: 100%;
  color: #3c4043;
  font-size: 13px;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-banner__text:hover {
  color: #1a0dab;
  text-decoration: underline;
}

@media (prefers-reduced-motion: reduce) {
  .site-banner__cube {
    transition: none;
  }
}

.layout__top {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
}

.layout__header {
  display: flex;
  align-items: center;
  gap: 28px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 12px;
  width: 100%;
}

.layout__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-size: 22px;
  font-weight: 400;
  color: #202124;
  text-decoration: none;
}

.layout__logo:hover {
  text-decoration: none;
}

.layout__logo:hover span {
  text-decoration: underline;
}

.layout__logo-icon {
  flex-shrink: 0;
}

.layout__feedback {
  font-size: 14px;
  color: #1a0dab;
  text-decoration: none;
}

.layout__feedback:hover {
  text-decoration: underline;
}

.layout__search {
  flex: 1;
  min-width: 0;
  max-width: none;
  margin: 0;
  padding: 0;
}

.layout__main {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 652px;
  margin: 0 auto;
  padding: 24px;
  width: 100%;
}

.search-bar-wrapper {
  position: relative;
}

.search-bar {
  display: flex;
  gap: 12px;
  align-items: center;
}

.search-bar__input {
  flex: 1;
  min-width: 0;
  height: 44px;
  padding: 0 16px;
  border: 1px solid #dfe1e5;
  border-radius: 24px;
  font-size: 16px;
  outline: none;
}

.search-bar__input:focus {
  border-color: #4285f4;
  box-shadow: 0 1px 6px rgba(32, 33, 36, 0.28);
}

.search-bar__button {
  height: 44px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: #f8f9fa;
  color: #3c4043;
  font-size: 14px;
  cursor: pointer;
  flex-shrink: 0;
}

.search-bar__button:hover {
  background: #f1f3f4;
  border-color: #dadce0;
}

.action-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 8px;
  height: 36px;
  padding: 0 16px;
  border: 1px solid #dadce0;
  border-radius: 4px;
  background: #f8f9fa;
  color: #3c4043;
  font-size: 14px;
  text-decoration: none;
  cursor: pointer;
}

.action-button:hover {
  background: #f1f3f4;
}

.search-suggestions {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 110;
  margin: 0;
  padding: 8px 0;
  list-style: none;
  background: #fff;
  border: 1px solid #dfe1e5;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(32, 33, 36, 0.15);
}

.search-suggestions__item {
  display: block;
  width: 100%;
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: #202124;
  text-align: left;
  cursor: pointer;
}

.search-suggestions__item:hover,
.search-suggestions__item--active {
  background: #f1f3f4;
}

.popular-queries {
  margin-top: 20px;
}

.popular-queries__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.popular-queries__item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 4px;
  border: none;
  background: transparent;
  color: #202124;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
}

.popular-queries__item:hover {
  background: #f8f9fa;
}

.popular-queries__icon {
  flex-shrink: 0;
  color: #70757a;
}

.popular-queries__text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.search-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.search-page__status,
.search-page__empty,
.search-page__summary {
  margin: 0;
  color: #70757a;
}

.search-page__error {
  margin: 0;
  color: #d93025;
}

.search-page__results {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.result-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.result-item__avatar {
  flex-shrink: 0;
  border-radius: 50%;
  object-fit: cover;
}

.result-item__content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.result-item__title {
  display: block;
  margin: 0 0 2px;
  font-size: 20px;
  line-height: 1.3;
  color: #1a0dab;
  text-decoration: none;
}

.result-item__title:hover {
  text-decoration: underline;
}

.result-item__title:visited {
  color: #681da8;
}

.result-item__username {
  display: block;
  margin: 0 0 4px;
  font-size: 14px;
  line-height: 1.3;
  color: #006621;
  text-decoration: none;
}

.result-item__username:hover {
  text-decoration: underline;
}

.result-item__description {
  margin: 4px 0 0;
  color: #4d5156;
}

.result-item__subscribers {
  margin-top: 4px;
  color: #70757a;
}

.channel-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.channel-card__avatar {
  flex-shrink: 0;
  border-radius: 50%;
  object-fit: cover;
}

.channel-card__content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.channel-card__title {
  margin: 0 0 2px;
  font-size: 28px;
  font-weight: 400;
  line-height: 1.2;
}

.channel-card__username {
  display: block;
  font-size: 14px;
  line-height: 1.3;
  color: #006621;
  margin: 0 0 8px;
  text-decoration: none;
}

.channel-card__username:hover {
  text-decoration: underline;
}

.channel-card__description {
  margin: 0 0 8px;
  color: #4d5156;
}

.channel-card__subscribers {
  color: #70757a;
  margin-bottom: 12px;
}

.channel-posts {
  margin-top: 16px;
  max-width: 100%;
}

.channel-posts__toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
  color: #1a0dab;
  font-size: 14px;
  cursor: pointer;
  list-style: none;
}

.channel-posts__toggle::-webkit-details-marker {
  display: none;
}

.channel-posts__toggle::before {
  content: '';
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 6px solid #70757a;
  transition: transform 0.15s ease;
}

.channel-posts[open] .channel-posts__toggle::before {
  transform: rotate(90deg);
}

.channel-posts__list {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid #dfe1e5;
  border-radius: 12px;
  overflow: hidden;
}

.channel-posts__item + .channel-posts__item {
  border-top: 1px solid #f1f3f4;
}

.channel-posts__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  color: inherit;
  text-decoration: none;
}

.channel-posts__link:hover {
  background: #f8f9fa;
}

.channel-posts__preview {
  color: #202124;
  line-height: 1.4;
}

.channel-posts__date {
  font-size: 12px;
  color: #70757a;
}

.channel-page {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.channel-page__status,
.channel-page__error {
  margin: 0;
}

.channel-page__error {
  color: #d93025;
}

.channel-page__similar-title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 400;
}

.channel-page__similar-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.similar-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.similar-item__avatar {
  flex-shrink: 0;
  border-radius: 50%;
  object-fit: cover;
}

.similar-item__content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.similar-item__title {
  display: block;
  margin: 0 0 2px;
  font-size: 18px;
  color: #1a0dab;
  text-decoration: none;
}

.similar-item__title:hover {
  text-decoration: underline;
}

.similar-item__username {
  display: block;
  margin: 0 0 4px;
  font-size: 14px;
  line-height: 1.3;
  color: #006621;
  text-decoration: none;
}

.similar-item__username:hover {
  text-decoration: underline;
}

.similar-item__description {
  margin: 4px 0 0;
  color: #4d5156;
}

.similar-item__subscribers {
  margin-top: 4px;
  color: #70757a;
}

.feedback-page {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feedback-page__title {
  margin: 0;
  font-size: 24px;
  font-weight: 400;
}

.feedback-page__form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feedback-page__textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #dfe1e5;
  border-radius: 8px;
  font-size: 16px;
  resize: vertical;
  outline: none;
}

.feedback-page__textarea:focus {
  border-color: #4285f4;
}

.feedback-page__submit {
  align-self: flex-start;
  height: 40px;
  padding: 0 20px;
  border: 1px solid #dadce0;
  border-radius: 4px;
  background: #f8f9fa;
  color: #3c4043;
  cursor: pointer;
}

.feedback-page__submit:hover:not(:disabled) {
  background: #f1f3f4;
}

.feedback-page__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.feedback-page__success {
  margin: 0;
  color: #137333;
}

.feedback-page__error {
  margin: 0;
  color: #d93025;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 28px 0 8px;
  flex-wrap: wrap;
}

.pagination__page {
  min-width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 6px;
  font-size: 14px;
  color: #1a0dab;
  text-decoration: none;
  border-radius: 4px;
}

.pagination__page:hover {
  text-decoration: underline;
  background: #f8f9fa;
}

.pagination__page--current {
  color: #202124;
  font-weight: 500;
  cursor: default;
}

.pagination__ellipsis {
  min-width: 24px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #70757a;
  font-size: 14px;
  letter-spacing: 2px;
}

.search-page__footer {
  margin-top: auto;
  padding-top: 32px;
  padding-bottom: 8px;
  border-top: 1px solid #e8eaed;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.search-page__footer-link {
  font-size: 14px;
  color: #70757a;
  text-decoration: none;
}

.search-page__footer-link:hover {
  color: #1a0dab;
  text-decoration: underline;
}

@media (max-width: 768px) {
  body {
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
  }

  .site-banner {
    --announcement-height: 36px;
  }

  .site-banner__text {
    font-size: 12px;
  }

  .layout__top {
    top: 0;
    padding-top: env(safe-area-inset-top);
  }

  .layout__header {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    max-width: none;
    padding-top: 12px;
    padding-right: max(16px, env(safe-area-inset-right));
    padding-bottom: 12px;
    padding-left: max(16px, env(safe-area-inset-left));
  }

  .layout__logo {
    font-size: 18px;
    min-width: 52px;
  }

  .layout__main {
    max-width: none;
    padding: 16px;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
  }

  .search-bar {
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }

  .search-bar__input {
    height: 40px;
    padding: 0 14px;
    font-size: 16px;
    border-radius: 20px;
  }

  .search-bar__button {
    width: auto;
    min-width: 56px;
    height: 40px;
    padding: 0 12px;
    touch-action: manipulation;
  }

  .search-suggestions__item {
    min-height: 44px;
    padding: 12px 16px;
  }

  .search-suggestions {
    max-height: min(50vh, 280px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .popular-queries {
    margin-top: 16px;
  }

  .popular-queries__item {
    min-height: 44px;
    padding: 10px 4px;
  }

  .search-page {
    gap: 20px;
  }

  .search-page__results {
    gap: 24px;
  }

  .result-item__title {
    font-size: 18px;
    line-height: 1.35;
  }

  .result-item__username,
  .result-item__description,
  .similar-item__description {
    word-break: break-word;
  }

  .channel-card__title {
    font-size: 22px;
  }

  .channel-page {
    gap: 24px;
  }

  .channel-page__similar-list {
    gap: 20px;
  }

  .similar-item__title {
    font-size: 17px;
  }

  .pagination {
    gap: 2px;
    padding: 24px 0 4px;
  }

  .pagination__page,
  .pagination__ellipsis {
    min-width: 40px;
    height: 40px;
  }

  .search-page__footer {
    padding-top: 24px;
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    gap: 16px;
  }

  .search-page__footer-link {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
  }

  .feedback-page__title {
    font-size: 20px;
  }

  .feedback-page__submit {
    align-self: stretch;
    width: 100%;
    min-height: 44px;
    touch-action: manipulation;
  }

  .channel-posts__link {
    padding: 14px 16px;
    min-height: 44px;
  }

  .channel-posts__toggle {
    min-height: 44px;
    padding: 10px 0;
  }
}

@media (max-width: 480px) {
  .layout__header {
    gap: 10px;
  }

  .layout__logo {
    font-size: 17px;
    min-width: 48px;
  }

  .search-bar__button {
    min-width: 48px;
    padding: 0 10px;
    font-size: 13px;
  }

  .result-item__title {
    font-size: 17px;
  }

  .result-item__description {
    font-size: 13px;
    line-height: 1.45;
  }

  .pagination__page {
    min-width: 36px;
    height: 36px;
    font-size: 13px;
  }

}

@media (max-width: 360px) {
  .layout__logo {
    font-size: 16px;
    min-width: 44px;
  }

  .search-bar {
    gap: 6px;
  }

  .search-bar__button {
    min-width: 44px;
    padding: 0 8px;
  }
}