/* 受講画面の共通スタイル（コース一覧 templates/course/list.html・コース詳細 templates/course/detail.html）
   クラス名・変数は lrn- で始める（base.html のサイドバーや Bootstrap と衝突させない）。
   配色は個人メッセージ（static/css/messages.css）と同じ、濃い緑のインク＋ライムを控えめに使う。 */

.lrn-page {
    --lrn-ink: #142426;
    --lrn-ink-2: #4b5d58;
    --lrn-ink-3: #8a9a94;
    --lrn-line: #e4e9e6;
    --lrn-surface: #ffffff;
    --lrn-soft: #f4f6f5;
    --lrn-lime: #d1ef83;
    --lrn-lime-soft: #f3f9e3;
    --lrn-green: #3f7a3a;
    --lrn-amber-soft: #fdf5e3;
    --lrn-amber: #8a5a12;
    color: var(--lrn-ink);
    max-width: 1180px;
    margin: 0 auto;
    padding: 28px 24px 56px;
}

/* ページ見出し */
.lrn-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.lrn-head h1 {
    font-size: 1.625rem;
    font-weight: 700;
    letter-spacing: .01em;
    margin: 0 0 6px;
    color: var(--lrn-ink);
}
.lrn-head p {
    margin: 0;
    color: var(--lrn-ink-2);
    font-size: .9375rem;
}

/* セクション見出し */
.lrn-section { margin-bottom: 40px; }
.lrn-section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}
.lrn-section-head h2 {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
    color: var(--lrn-ink);
}
.lrn-count {
    font-size: .8125rem;
    font-weight: 500;
    color: var(--lrn-ink-3);
    margin-left: 6px;
}

/* ボタン */
.lrn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 40px;
    padding: 8px 18px;
    border-radius: 999px;
    font-size: .875rem;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color .15s, border-color .15s, color .15s;
    white-space: nowrap;
}
.lrn-btn-primary { background: var(--lrn-ink); color: #fff; }
.lrn-btn-primary:hover { background: #24393b; color: #fff; }
.lrn-btn-secondary { background: var(--lrn-surface); color: var(--lrn-ink); border-color: var(--lrn-line); }
.lrn-btn-secondary:hover { border-color: var(--lrn-ink-3); color: var(--lrn-ink); }
.lrn-btn-block { width: 100%; }
.lrn-btn:disabled, .lrn-btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }

/* バッジ */
.lrn-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: .75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    white-space: nowrap;
    background: var(--lrn-soft);
    color: var(--lrn-ink-2);
}
.lrn-badge-done { background: var(--lrn-lime-soft); color: var(--lrn-green); }
.lrn-badge-paid { background: var(--lrn-soft); color: var(--lrn-ink); }
.lrn-badge-free { background: var(--lrn-lime-soft); color: var(--lrn-green); }
.lrn-badge-draft { background: var(--lrn-amber-soft); color: var(--lrn-amber); }

/* 進み具合のバー */
.lrn-progress {
    height: 6px;
    border-radius: 999px;
    background: var(--lrn-soft);
    overflow: hidden;
}
.lrn-progress > span {
    display: block;
    height: 100%;
    border-radius: 999px;
    background: var(--lrn-ink);
}
.lrn-progress.is-done > span { background: var(--lrn-green); }
.lrn-progress-label {
    display: flex;
    justify-content: space-between;
    font-size: .8125rem;
    color: var(--lrn-ink-2);
    margin-bottom: 6px;
}

/* コースのカード（一覧） */
.lrn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}
.lrn-card {
    display: flex;
    flex-direction: column;
    background: var(--lrn-surface);
    border: 1px solid var(--lrn-line);
    border-radius: 14px;
    overflow: hidden;
    transition: border-color .15s, box-shadow .15s;
}
.lrn-card-inner {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 18px 20px 20px;
}

/* サムネイル（16:9）。画像が無いコースはタイトル入りの無地の表紙にする */
.lrn-thumb {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    background: #e9efeb;
    overflow: hidden;
    text-decoration: none;
}
.lrn-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform .25s ease;
}
.lrn-card:hover .lrn-thumb img { transform: scale(1.02); }
.lrn-thumb-empty {
    display: flex;
    align-items: flex-end;
    padding: 18px 20px;
    background: var(--lrn-ink);
}
.lrn-thumb-title {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    border-left: 3px solid var(--lrn-lime);
    padding-left: 10px;
}
.lrn-thumb .lrn-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .12);
}
.lrn-card:hover { border-color: #c9d3ce; box-shadow: 0 2px 10px rgba(20, 36, 38, .06); }
.lrn-card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 8px;
}
.lrn-card-title {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
    margin: 0 0 6px;
    color: var(--lrn-ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.lrn-card-title a { color: inherit; text-decoration: none; }
.lrn-card-title a:hover { text-decoration: underline; }
.lrn-card-text {
    font-size: .875rem;
    color: var(--lrn-ink-2);
    line-height: 1.7;
    margin: 0 0 14px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.lrn-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 14px;
    font-size: .8125rem;
    color: var(--lrn-ink-3);
    margin-bottom: 14px;
}
.lrn-card-body { flex: 1; }
.lrn-card-price {
    font-size: 1.125rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    margin-bottom: 14px;
}
.lrn-card-price small {
    font-size: .75rem;
    font-weight: 500;
    color: var(--lrn-ink-3);
    margin-left: 4px;
}
.lrn-card-progress { margin-bottom: 16px; }

/* 空の状態 */
.lrn-empty {
    text-align: center;
    padding: 48px 16px;
    border: 1px dashed var(--lrn-line);
    border-radius: 14px;
    color: var(--lrn-ink-2);
    background: var(--lrn-surface);
}
.lrn-empty strong { display: block; color: var(--lrn-ink); font-size: 1rem; margin-bottom: 4px; }
.lrn-empty p { margin: 0; font-size: .875rem; }

@media (max-width: 576px) {
    .lrn-page { padding: 20px 16px 40px; }
    .lrn-head h1 { font-size: 1.375rem; }
    .lrn-head .lrn-btn { width: 100%; }
    .lrn-grid { grid-template-columns: 1fr; }
}

/* 数字のタイル（学習の記録） */
.lrn-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 36px;
}
.lrn-stat {
    background: var(--lrn-surface);
    border: 1px solid var(--lrn-line);
    border-radius: 14px;
    padding: 16px 18px;
}
.lrn-stat-label { font-size: .8125rem; font-weight: 600; color: var(--lrn-ink-2); }
.lrn-stat-value { font-size: 1.75rem; font-weight: 700; line-height: 1.3; margin: 4px 0 2px; font-variant-numeric: tabular-nums; }
.lrn-stat-value small { font-size: .875rem; font-weight: 500; color: var(--lrn-ink-3); margin-left: 3px; }
.lrn-stat-note { font-size: .75rem; color: var(--lrn-ink-3); }

/* 一覧の行（最近見た動画など） */
.lrn-list {
    list-style: none;
    margin: 0;
    padding: 0;
    background: var(--lrn-surface);
    border: 1px solid var(--lrn-line);
    border-radius: 14px;
    overflow: hidden;
}
.lrn-row { display: flex; align-items: center; gap: 14px; padding: 12px 16px; }
.lrn-row + .lrn-row { border-top: 1px solid var(--lrn-line); }
.lrn-row-thumb { flex: 0 0 104px; aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; background: #e9efeb; }
.lrn-row-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.lrn-row-body { flex: 1; min-width: 0; }
.lrn-row-title { font-size: .9375rem; font-weight: 600; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lrn-row-title a { color: var(--lrn-ink); text-decoration: none; }
.lrn-row-title a:hover { text-decoration: underline; }
.lrn-row-meta { font-size: .8125rem; color: var(--lrn-ink-3); margin-top: 2px; }
.lrn-row-action { flex-shrink: 0; }
.lrn-row-action .lrn-btn { min-height: 34px; padding: 6px 14px; font-size: .8125rem; }
.lrn-card-actions { display: grid; gap: 8px; }
.lrn-note { font-size: .8125rem; color: var(--lrn-ink-2); margin: 0 0 12px; }

@media (max-width: 576px) {
    .lrn-stats { grid-template-columns: 1fr; gap: 8px; }
    .lrn-stat { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 0 12px; }
    .lrn-stat-note { flex-basis: 100%; }
    .lrn-row { flex-wrap: wrap; padding: 12px; }
    .lrn-row-thumb { flex-basis: 88px; }
    .lrn-row-body { flex-basis: calc(100% - 102px); }
    .lrn-row-title { white-space: normal; }
    .lrn-row-action { width: 100%; }
    .lrn-row-action .lrn-btn { width: 100%; }
}

/* 表（管理者向け）。スマホでは1行ずつのカードにする */
.lrn-panel {
    background: var(--lrn-surface);
    border: 1px solid var(--lrn-line);
    border-radius: 14px;
    overflow: hidden;
}
.lrn-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 14px 16px;
    border-bottom: 1px solid var(--lrn-line);
}
.lrn-panel-head h2 { font-size: 1rem; font-weight: 700; margin: 0; }
.lrn-search {
    border: 1px solid var(--lrn-line);
    border-radius: 999px;
    padding: 7px 14px;
    font-size: .875rem;
    min-width: 220px;
}
.lrn-search:focus { outline: none; border-color: var(--lrn-ink-3); box-shadow: 0 0 0 3px rgba(20, 36, 38, .08); }
.lrn-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.lrn-table th {
    font-size: .75rem;
    font-weight: 600;
    color: var(--lrn-ink-3);
    text-align: left;
    padding: 10px 16px;
    border-bottom: 1px solid var(--lrn-line);
    white-space: nowrap;
}
.lrn-table td { padding: 12px 16px; border-bottom: 1px solid var(--lrn-line); vertical-align: middle; }
.lrn-table tbody tr:last-child td { border-bottom: 0; }
.lrn-table tbody tr:hover { background: #fafbfa; }
.lrn-table .lrn-num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.lrn-table .lrn-mini-progress { display: flex; align-items: center; gap: 8px; min-width: 140px; }
.lrn-table .lrn-mini-progress .lrn-progress { flex: 1; }
.lrn-table .lrn-mini-progress span.lrn-pct { font-size: .8125rem; color: var(--lrn-ink-2); min-width: 3em; text-align: right; font-variant-numeric: tabular-nums; }
.lrn-person { font-weight: 600; }
.lrn-sub { display: block; font-size: .75rem; color: var(--lrn-ink-3); }
.lrn-table-empty { padding: 32px 16px; text-align: center; color: var(--lrn-ink-2); font-size: .875rem; }

@media (max-width: 768px) {
    .lrn-search { min-width: 0; width: 100%; }
    .lrn-table thead { display: none; }
    .lrn-table, .lrn-table tbody, .lrn-table tr, .lrn-table td { display: block; width: 100%; }
    .lrn-table tr { padding: 12px 16px; border-bottom: 1px solid var(--lrn-line); }
    .lrn-table tbody tr:last-child { border-bottom: 0; }
    .lrn-table td { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 4px 0; border: 0; text-align: right; }
    .lrn-table td::before { content: attr(data-label); font-size: .75rem; color: var(--lrn-ink-3); text-align: left; flex-shrink: 0; }
    .lrn-table td.lrn-cell-main { display: block; text-align: left; padding-bottom: 6px; }
    .lrn-table td.lrn-cell-main::before { display: none; }
    .lrn-table .lrn-mini-progress { min-width: 0; width: 60%; }
    .lrn-table td.lrn-cell-action { justify-content: flex-end; padding-top: 8px; }
    .lrn-table td.lrn-cell-action::before { display: none; }
}

/* 管理者向けの入力画面（コース作成・編集、テスト作成・編集）の配色をそろえる。
   部品は Bootstrap のまま、いちばん外の要素に lrn-tone を付ける */
.lrn-tone { --lrn-ink: #142426; --lrn-ink-2: #4b5d58; --lrn-ink-3: #8a9a94; --lrn-line: #e4e9e6; --lrn-soft: #f4f6f5; --lrn-lime-soft: #f3f9e3; --lrn-green: #3f7a3a; color: var(--lrn-ink); }
.lrn-tone .btn-primary { background: var(--lrn-ink); border-color: var(--lrn-ink); }
.lrn-tone .btn-primary:hover, .lrn-tone .btn-primary:focus, .lrn-tone .btn-primary:active { background: #24393b !important; border-color: #24393b !important; }
.lrn-tone .btn-outline-primary { color: var(--lrn-ink); border-color: #c9d3ce; }
.lrn-tone .btn-outline-primary:hover, .lrn-tone .btn-outline-primary:focus { background: var(--lrn-soft); color: var(--lrn-ink); border-color: var(--lrn-ink-3); }
.lrn-tone .btn-success { background: var(--lrn-green); border-color: var(--lrn-green); }
.lrn-tone .text-primary { color: var(--lrn-ink) !important; }
.lrn-tone .text-success { color: var(--lrn-green) !important; }
.lrn-tone a:not(.btn):not(.nav-link) { color: var(--lrn-ink); }
.lrn-tone .card { border-color: var(--lrn-line); border-radius: 14px; overflow: hidden; }
.lrn-tone .card-header { background: #fff; border-bottom-color: var(--lrn-line); }
.lrn-tone .form-control:focus, .lrn-tone .form-select:focus { border-color: var(--lrn-ink-3); box-shadow: 0 0 0 .2rem rgba(20, 36, 38, .1); }
.lrn-tone .form-check-input:checked { background-color: var(--lrn-ink); border-color: var(--lrn-ink); }
.lrn-tone .form-check-input:focus { border-color: var(--lrn-ink-3); box-shadow: 0 0 0 .2rem rgba(20, 36, 38, .1); }
.lrn-tone .nav-tabs .nav-link { color: var(--lrn-ink-2); }
.lrn-tone .nav-tabs .nav-link.active { color: var(--lrn-ink); font-weight: 600; }
.lrn-tone .alert-info { background: var(--lrn-soft); border-color: var(--lrn-line); color: var(--lrn-ink-2); }
.lrn-tone .alert-warning { background: #fdf5e3; border-color: #f0dfb8; color: #8a5a12; }
.lrn-tone .badge.bg-primary, .lrn-tone .badge.bg-info, .lrn-tone .badge.bg-secondary, .lrn-tone .badge.bg-warning { background: var(--lrn-soft) !important; color: var(--lrn-ink-2) !important; font-weight: 600; }
.lrn-tone .badge.bg-success { background: var(--lrn-lime-soft) !important; color: var(--lrn-green) !important; font-weight: 600; }
.lrn-tone .bg-primary:not(.badge) { background: var(--lrn-ink) !important; }

/* ---------- 企業（サロン・スクール）の管理画面で使う部品 ---------- */

/* 横幅をしぼった入力ページ（招待など） */
.lrn-page.lrn-narrow { max-width: 760px; }

/* 企業の管理画面の上に置くタブ（templates/company/_subnav.html） */
.lrn-tabs {
    display: flex;
    gap: 4px;
    margin: 0 0 24px;
    padding: 0;
    border-bottom: 1px solid #e4e9e6;
    overflow-x: auto;
    scrollbar-width: none;
}
.lrn-tabs::-webkit-scrollbar { display: none; }
.lrn-tab {
    flex-shrink: 0;
    padding: 10px 14px;
    font-size: .875rem;
    font-weight: 600;
    color: #4b5d58;
    text-decoration: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    white-space: nowrap;
}
.lrn-tab:hover { color: #142426; }
.lrn-tab.is-active { color: #142426; border-bottom-color: #142426; }
.lrn-tab-back { color: #8a9a94; font-weight: 500; padding-left: 0; }

/* 小さいボタン・削除などのボタン */
.lrn-btn-sm { min-height: 32px; padding: 5px 14px; font-size: .8125rem; }
.lrn-btn-danger { background: var(--lrn-surface); color: #a3262f; border-color: var(--lrn-line); }
.lrn-btn-danger:hover { border-color: #a3262f; color: #a3262f; }
.lrn-link { color: var(--lrn-ink); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.lrn-link:hover { color: var(--lrn-ink-2); }
.lrn-badge-alert { background: #fbeceb; color: #a3262f; }

/* 項目名と値を並べる表（登録情報など） */
.lrn-dl { margin: 0; }
.lrn-dl > div {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 4px 16px;
    padding: 13px 16px;
    align-items: center;
}
.lrn-dl > div + div { border-top: 1px solid var(--lrn-line); }
.lrn-dl dt { font-size: .8125rem; font-weight: 600; color: var(--lrn-ink-2); }
.lrn-dl dd { margin: 0; font-size: .9375rem; min-width: 0; overflow-wrap: anywhere; }
.lrn-dl dd small { display: block; font-size: .75rem; color: var(--lrn-ink-3); margin-top: 2px; }
.lrn-panel-body { padding: 16px; }
.lrn-panel-foot { padding: 12px 16px; border-top: 1px solid var(--lrn-line); font-size: .8125rem; color: var(--lrn-ink-2); }
.lrn-panel-head p { margin: 2px 0 0; font-size: .8125rem; color: var(--lrn-ink-2); font-weight: 400; }

/* 使っている量のバー（上限つき） */
.lrn-meters { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 340px)); gap: 16px 28px; }
.lrn-meter-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: .8125rem; color: var(--lrn-ink-2); margin-bottom: 6px; }
.lrn-meter-top strong { font-size: .9375rem; color: var(--lrn-ink); font-variant-numeric: tabular-nums; }
.lrn-progress.is-full > span { background: #a3262f; }

/* 名前の頭文字の丸 */
.lrn-avatar {
    flex: 0 0 36px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--lrn-soft);
    color: var(--lrn-ink-2);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .8125rem;
    font-weight: 700;
}
.lrn-person-row { display: flex; align-items: center; gap: 10px; min-width: 0; }
.lrn-person-row > div { min-width: 0; }
.lrn-person-row .lrn-sub { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lrn-actions { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }
.lrn-actions form { display: inline-flex; margin: 0; }

/* お知らせの帯 */
.lrn-notice {
    background: var(--lrn-soft);
    border: 1px solid var(--lrn-line);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: .875rem;
    line-height: 1.8;
    color: var(--lrn-ink-2);
    margin: 0 0 20px;
}
.lrn-notice strong { color: var(--lrn-ink); }
.lrn-notice ul { margin: 6px 0 0; padding-left: 1.2em; }
.lrn-notice-warn { background: var(--lrn-amber-soft); border-color: #f0dfb8; color: var(--lrn-amber); }
.lrn-notice-warn strong { color: #6f470c; }
.lrn-notice-ok { background: var(--lrn-lime-soft); border-color: #dcebb6; color: var(--lrn-green); }
.lrn-notice-ok strong { color: #2f5d2b; }

/* 入力欄 */
.lrn-form { background: var(--lrn-surface); border: 1px solid var(--lrn-line); border-radius: 14px; padding: 24px; }
.lrn-field { margin: 0 0 22px; padding: 0; border: 0; }
.lrn-label { display: block; font-size: .9375rem; font-weight: 700; margin: 0 0 4px; color: var(--lrn-ink); }
.lrn-hint { font-size: .8125rem; color: var(--lrn-ink-2); line-height: 1.7; margin: 0 0 8px; }
.lrn-input {
    display: block;
    width: 100%;
    border: 1px solid #cfd8d3;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 1rem;
    color: var(--lrn-ink);
    background: #fff;
}
.lrn-input:focus { outline: none; border-color: var(--lrn-ink-3); box-shadow: 0 0 0 3px rgba(20, 36, 38, .08); }
textarea.lrn-input { line-height: 1.7; resize: vertical; }
.lrn-error { font-size: .8125rem; color: #a3262f; margin: 6px 0 0; }
.lrn-form-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; margin-top: 4px; }

@media (max-width: 576px) {
    .lrn-dl > div { grid-template-columns: 1fr; padding: 12px 14px; }
    .lrn-form { padding: 18px 16px; }
    .lrn-form-actions .lrn-btn { flex: 1; }
    .lrn-actions { justify-content: flex-start; }
}

/* lrn-admin：lrn-tone と一緒に付ける。企業の基本設定など、Bootstrap の部品のまま形もそろえたい画面用。
   （lrn-tone だけの画面＝コース編集・テスト編集には影響させない） */
.lrn-admin .btn-secondary { background: #fff; border-color: #cfd8d3; color: var(--lrn-ink); }
.lrn-admin .btn-secondary:hover, .lrn-admin .btn-secondary:focus { background: var(--lrn-soft); border-color: var(--lrn-ink-3); color: var(--lrn-ink); }
.lrn-admin .btn-outline-secondary { border-color: #cfd8d3; color: var(--lrn-ink); }
.lrn-admin .btn-outline-secondary:hover { background: var(--lrn-soft); border-color: var(--lrn-ink-3); color: var(--lrn-ink); }
.lrn-admin .btn { border-radius: 999px; padding-left: 1.1em; padding-right: 1.1em; }
.lrn-admin .btn-sm { padding-left: .9em; padding-right: .9em; }
.lrn-admin .card-header h2, .lrn-admin .card-header h3, .lrn-admin .card-header h5 { font-size: 1rem; font-weight: 700; color: var(--lrn-ink); }
.lrn-admin .form-label { font-weight: 600; font-size: .875rem; color: var(--lrn-ink); }
.lrn-admin .form-control, .lrn-admin .form-select, .lrn-admin .input-group-text { border-color: #cfd8d3; border-radius: 10px; }
.lrn-admin .input-group > .form-control:not(:first-child) { border-top-left-radius: 0; border-bottom-left-radius: 0; }
.lrn-admin .input-group > .input-group-text:not(:last-child) { border-top-right-radius: 0; border-bottom-right-radius: 0; background: var(--lrn-soft); color: var(--lrn-ink-2); }
.lrn-admin .form-text { color: var(--lrn-ink-3); }
.lrn-admin .alert { border-radius: 12px; font-size: .875rem; }
.lrn-admin .alert-success { background: var(--lrn-lime-soft); border-color: #dcebb6; color: #2f5d2b; }
.lrn-admin .progress { background: var(--lrn-soft); }
.lrn-admin .progress-bar.bg-success { background-color: var(--lrn-green) !important; }
.lrn-admin .progress-bar.bg-warning { background-color: #c98a1a !important; }
.lrn-tone a.lrn-tab:not(.btn):not(.nav-link) { color: #4b5d58; }
.lrn-tone a.lrn-tab.is-active:not(.btn):not(.nav-link) { color: #142426; }
.lrn-tone a.lrn-tab-back:not(.btn):not(.nav-link) { color: #8a9a94; }

/* 受講期限（templates/course/_due.html） */
.lrn-due { font-size: .8125rem; font-weight: 600; color: var(--lrn-ink-2); margin: 8px 0 12px; }
.lrn-due-soon { color: var(--lrn-amber); }
.lrn-due-overdue { color: #a3262f; }