/* ======================================
   Rampaga header.css — v1.1
   Назначение: шапка сайта, поиск, утилиты, навигация
   ====================================== */

.header {
  --header-background-color: var(--surface-color, #f7f9fb);
  --header-border-color: var(--border-subtle-color, rgba(0, 0, 0, 0.06));
  --header-text-color: var(--text-color, #20262d);
  --header-muted-color: var(--text-muted-color, #6b7280);
  --header-soft-text-color: var(--text-soft-color, #475569);
  --header-surface-color: var(--surface-muted-color, #eef3f7);
  --header-surface-hover-color: color-mix(in srgb, var(--surface-muted-color, #eef3f7) 72%, white);
  --header-surface-active-color: var(--surface-subtle-color, #e8eef3);
  --header-dropdown-background-color: color-mix(in srgb, var(--surface-color, #f7f9fb) 92%, white);
  --header-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);

  width: 100%;
  border-bottom: 1px solid var(--header-border-color);

  /* Если вернёшь sticky, просто раскомментируй
  position: sticky;
  top: 0;
  z-index: 1001;
  */

  & .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xs, 0.75rem);
    min-height: calc(var(--header-height, 40px) + 1rem);
    padding: 0.5rem 1.625rem;
    background: var(--header-background-color);
  }
}

/* ===== Лого ===== */

.logo {
  display: flex;
  align-items: center;
  min-width: 0;
  height: var(--header-height, 40px);

  & .logo__link,
  & .logo--link {
    display: inline-flex;
    align-items: center;
    color: var(--text-strong-color, #181c22);
    font-family: var(--font-family-brand, sans-serif);
    font-size: clamp(2rem, 1.8rem + 0.8vw, 2.375rem);
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    text-transform: lowercase;
    transform: translateY(-0.1875rem);
  }
}

/* ===== Поиск ===== */

.search {
  position: relative;
  flex: 1;
  max-width: 720px;
  margin-inline: 1rem;

  & .search__form {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;

    &::before {
      content: "ctrl + f";
      position: absolute;
      top: 50%;
      right: 0.9375rem;
      transform: translateY(-50%);
      color: var(--header-muted-color);
      font-size: 0.7rem;
      text-transform: uppercase;
      opacity: 0.75;
      pointer-events: none;
    }
  }

  & .search__input,
  & input {
    width: 100%;
    height: var(--header-height, 40px);
    padding: 0.65rem 0.9rem;
    border: 1px solid transparent;
    border-radius: 1.125rem;
    background: var(--header-surface-color);
    color: var(--header-text-color);
    transition:
      border-color var(--transition-fast, 150ms ease),
      background-color var(--transition-fast, 150ms ease),
      box-shadow var(--transition-fast, 150ms ease);

    &::placeholder {
      color: var(--header-muted-color);
    }

    &:hover {
      background: var(--header-surface-hover-color);
    }

    &:focus,
    &:focus-visible {
      outline: none;
      background: color-mix(in srgb, var(--header-background-color, #f7f9fb) 86%, white);
      box-shadow: 0 0 0 3px light-dark(#1677c8, #3aa2ff);
    }
  }

  & .search__result {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    left: 0;
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    max-height: 0;
    overflow: hidden;
    padding: var(--space-xs, 0.75rem);
    border: 1px solid var(--border-color, rgba(17, 24, 39, 0.08));
    border-radius: 0.9rem;
    background: var(--header-dropdown-background-color);
    box-shadow: var(--header-shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(0.5rem);
    transition:
      opacity var(--transition-base, 300ms ease-out),
      transform var(--transition-base, 300ms ease-out),
      max-height var(--transition-base, 300ms ease-out);

    &.is-open {
      max-height: 30vh;
      overflow-y: auto;
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }

    & .search__result--item {
      display: flex;
      align-items: center;
    }

    & .search__result--link,
    & .search__result--history-item {
      display: flex;
      align-items: center;
      gap: 0.25rem;
      width: 100%;
      padding: var(--space-2xs, 0.5rem);
      border-radius: var(--radius-pill, 999px);
      color: light-dark(#334155, #b5bfcb);
      text-align: left;
      text-decoration: none;

      &:hover,
      &:focus-visible {
        background: color-mix(in srgb, var(--surface-subtle-color, #e8eef3) 78%, white);
        color: var(--text-strong-color, #181c22);
      }

      & .search__result--icon {
        width: 1rem;
        height: 1rem;
        opacity: 0.7;
      }

      & .search__result--text {
        width: 100%;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
      }
    }
  }

  & .is-loader {
    width: 25px;
    height: 25px;
    margin: 0 auto;
    border: 2px solid color-mix(in srgb, var(--accent-color, #1677c8) 20%, transparent);
    border-top-color: var(--accent-color, #1677c8);
    border-radius: var(--radius-round, 50%);
    animation: header-spin 0.5s linear infinite;
  }
}

/* ===== Утилиты шапки ===== */

.header-utils {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-utils__btn,
.burger-menu__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--header-height, 40px);
  height: var(--header-height, 40px);
  padding: 0;
  border: none;
  border-radius: var(--radius-round, 50%);
  background: transparent;
  color: var(--header-soft-text-color);
  cursor: pointer;
  transition:
    background-color var(--transition-fast, 150ms ease),
    color var(--transition-fast, 150ms ease),
    transform var(--transition-fast, 150ms ease);

  &:hover {
    background: var(--header-surface-active-color);
    color: var(--text-strong-color, #181c22);
  }

  &:active {
    transform: translateY(1px);
  }

  &:focus-visible {
    outline: 2px solid var(--accent-soft-color, rgba(22, 119, 200, 0.35));
    outline-offset: 2px;
  }

  & svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
  }
}

.header-utils__btn--avatar {
  overflow: hidden;

  & img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
  }
}

/* ===== Бургер ===== */

.burger-menu__btn {
  & span {
    position: relative;
    display: block;
    width: 16px;
    height: 2px;
    border-radius: 1rem;
    background: var(--header-soft-text-color);
    transition: all var(--transition-base, 300ms ease-out);

    &::before,
    &::after {
      content: "";
      position: absolute;
      left: 0;
      width: 100%;
      height: 2px;
      border-radius: 1rem;
      background: var(--header-soft-text-color);
      transition: all var(--transition-base, 300ms ease-out);
    }

    &::before {
      top: -6px;
    }

    &::after {
      top: 6px;
    }
  }

  &.is-open {
    background: color-mix(in srgb, var(--surface-subtle-color, #e8eef3) 88%, white);

    & span {
      background: transparent;

      &::before {
        top: 0;
        transform: rotate(45deg);
      }

      &::after {
        top: 0;
        transform: rotate(-45deg);
      }
    }
  }
}

/* ===== Навигация ===== */

.navigation {
  position: sticky;
  top: 0;
  align-self: start;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: thin;
}

/* ===== Адаптив ===== */

@media (max-width: 900px) {
  .header {
    & .header__inner {
      gap: 0.5rem;
      padding-inline: 1rem;
    }
  }

  .search {
    max-width: 360px;
    margin-inline: 0.5rem;
  }
}

@media (max-width: 720px) {
  .header {
    & .header__inner {
      flex-wrap: wrap;
    }
  }

  .logo {
    order: 1;
  }

  .header-utils {
    order: 2;
    margin-left: auto;
  }

  .search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
    margin: 0;

    & .search__form::before {
      display: none;
    }
  }
}

@media (max-width: 480px) {
  .header {
    & .header__inner {
      padding-inline: 0.75rem;
    }
  }

  .logo {
    & .logo__link,
    & .logo--link {
      font-size: 2rem;
    }
  }

  .header-utils {
    gap: 0.5rem;
  }
}

@keyframes header-spin {
  to {
    transform: rotate(360deg);
  }
}