/* ==========================================================================
   画面の枠：お知らせ帯・ヘッダー・グローバルナビ・2カラム・サイドバー・フッター
   ========================================================================== */

/* 中身が少ないページでもフッターを画面の下端に置く */
#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

#app > .page {
  flex: 1 0 auto;
}

#app > .site-footer {
  margin-top: auto;
}
.notice-bar {
  padding: 4px 16px;
  background: var(--c-notice);
  border-bottom: 1px solid var(--c-notice-line);
  font-size: 12px;
  text-align: center;
}

/* --- ヘッダー ----------------------------------------------------------- */
.site-header {
  background: var(--c-header);
  border-top: 4px solid var(--c-brand);
  border-bottom: 1px solid var(--c-header-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 12px 24px;
  min-height: 76px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.site-logo {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 8px;
  color: var(--c-text);
}

.site-logo:hover {
  color: var(--c-text);
  text-decoration: none;
}

.site-logo__mark {
  display: block;
  width: 52px;
  height: 52px;
  border-radius: 2px;
  object-fit: contain;
}

.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.site-logo__name {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.site-logo__tagline {
  color: var(--c-text-sub);
  font-size: 11px;
}

.site-search {
  display: flex;
  flex: 1;
  max-width: 540px;
}

.site-search__input {
  flex: 1;
  min-width: 0;
  height: 36px;
  padding: 0 10px;
  background: #fff;
  border: 1px solid #848484;
  border-right: 0;
  border-radius: var(--radius) 0 0 var(--radius);
}

.site-search__input::placeholder {
  color: #999;
}

.site-search__button {
  height: 36px;
  padding: 0 20px;
  background: var(--g-brand);
  border: 1px solid var(--c-brand-dark);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
}

.site-search__button:hover {
  filter: brightness(1.08);
}

.site-util {
  display: flex;
  align-items: center;
  gap: 4px 16px;
  margin-left: auto;
  font-size: 13px;
  white-space: nowrap;
}

.site-util a {
  color: var(--c-text);
}


/* --- グローバルナビ ---------------------------------------------------------- */
.gnav {
  background: var(--c-gnav);
}

.gnav .container {
  padding: 0;
}

.gnav__list {
  display: flex;
  overflow-x: auto;
  scrollbar-width: thin;
}

.gnav__list a {
  display: block;
  padding: 10px 16px;
  color: #fff;
  font-size: 13px;
  white-space: nowrap;
  border-right: 1px solid #555;
}

.gnav__list li:first-child a {
  border-left: 1px solid #555;
}

.gnav__list a:hover {
  background: var(--c-gnav-hover);
  color: #fff;
  text-decoration: none;
}

.gnav__list a.is-active {
  background: var(--c-gnav-active);
  box-shadow: inset 0 -3px 0 var(--c-marker);
}

/* --- 2カラム ---------------------------------------------------------------- */
.page {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  grid-template-areas: "side main";
  gap: 24px;
  margin-top: 16px;
  margin-bottom: 48px;
}

.main {
  grid-area: main;
  min-width: 0;
}

.main:focus {
  outline: none;
}

.main.is-loading .view {
  opacity: 0.45;
  transition: opacity 0.2s;
  cursor: progress;
}

.sidebar {
  grid-area: side;
}

/* --- サイドバー ------------------------------------------------------------ */
.side-box {
  margin-bottom: 16px;
  border: 1px solid var(--c-border);
}

.side-box__title {
  padding: 6px 10px;
  background: var(--c-bg-sub);
  border-bottom: 1px solid var(--c-border);
  font-size: 13px;
}

.side-cats a,
.side-links a {
  position: relative;
  display: block;
  padding: 8px 10px 8px 24px;
  border-top: 1px solid #eee;
  color: var(--c-text);
  font-size: 13px;
}

.side-cats li:first-child a,
.side-links li:first-child a {
  border-top: 0;
}

.side-cats a::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 10px;
  width: 7px;
  height: 7px;
  margin-top: -3px;
  background: var(--c-marker);
}

/* 難易度（★の数）の一覧は、★が目印になるので四角い印を付けない */
.side-cats--stars a {
  padding-left: 10px;
}

.side-cats--stars a::before {
  content: none;
}

.side-links a::before {
  content: "›";
  position: absolute;
  left: 11px;
  color: var(--c-muted);
}

.side-cats a:hover,
.side-links a:hover {
  background: var(--c-brand-tint);
  text-decoration: none;
}

.side-cats a.is-active,
.side-links a.is-active {
  background: var(--c-brand-tint-strong);
  font-weight: 700;
}

.side-box--guide p {
  padding: 8px 10px 0;
  color: var(--c-text-sub);
  font-size: 12px;
}

.side-box--guide p:last-child {
  padding-bottom: 10px;
}

/* --- フッター ---------------------------------------------------------------- */
.site-footer {
  background: #3a3a3a;
  border-top: 4px solid var(--c-brand);
  color: #ddd;
  font-size: 13px;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}

.site-footer nav a {
  color: #fff;
}

.site-footer nav a:hover {
  color: #ffb3b5;
}

.site-footer__contact a {
  color: #ffd2d3;
}

.site-footer__copy {
  color: #aaa;
  font-size: 12px;
}

/* --- スマートフォン ---------------------------------------------------------- */
@media (max-width: 860px) {
  .page {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "main"
      "side";
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-wrap: wrap;
    min-height: 0;
  }

  .site-logo__mark {
    width: 40px;
    height: 40px;
  }

  .site-logo__name {
    font-size: 17px;
  }

  .site-logo__tagline {
    display: none;
  }

  .site-util {
    display: none;
  }

  .site-search {
    flex-basis: 100%;
    order: 3;
    max-width: none;
  }
}