/* Kajinga Akademie — CI: #179AFC / #33CC33 / #07234B */
.kak-app {
    --kak-brand: #179AFC; --kak-navy: #07234B;
    --kak-border: #e3eaf2; --kak-muted: #667;
    font-family: var(--kak-font-body, Poppins, Helvetica, Arial, sans-serif); color: var(--kak-navy);
    background: var(--kak-bg, #fff);
    max-width: 900px; margin: 0 auto;
}
/* Text, das direkt auf --kak-bg liegt (keine weiße Karte darunter) folgt der gewählten Hintergrundfarbe;
   Text auf den festen weißen Karten (s. o., color: var(--kak-navy)) bleibt bewusst Navy, unabhängig
   von --kak-bg (I2, Final-Review 1.4.1). */
.kak-course-head h2, .kak-course-desc, .kak-lesson > h2, .kak-lesson-content, .kak-section-title {
    color: var(--kak-text, var(--kak-navy));
}
.kak-header { position: sticky; top: 0; background: #fff; z-index: 5; border-bottom: 1px solid var(--kak-border); padding: 12px 0 0; }
.kak-logo-wrap img { max-height: 48px; width: auto; }
.kak-title { margin: 0 0 10px; font-size: 22px; color: var(--kak-brand); font-family: var(--kak-font-head, inherit); }
.kak-tabs { display: flex; gap: 6px; }
.kak-tab { display: inline-flex; align-items: center; gap: 6px; padding: 10px 16px; text-decoration: none; color: var(--kak-muted); font-weight: 600; border-bottom: 3px solid transparent; }
.kak-tab.is-active { color: var(--kak-brand); border-bottom-color: var(--kak-brand); }
.kak-tab svg { width: 18px; height: 18px; }
.kak-main { padding: 20px 0 40px; }
.kak-notice { padding: 30px; text-align: center; color: var(--kak-muted); background: #f5f9ff; border-radius: 10px; }
/* Kurs-Grid */
.kak-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; }
.kak-card { background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
.kak-card-media { position: relative; aspect-ratio: 16/9; background: #f5f9ff; display: flex; align-items: center; justify-content: center; }
.kak-card-media img { width: 100%; height: 100%; object-fit: cover; }
.kak-card-ph svg { width: 40px; height: 40px; color: var(--kak-brand); }
.kak-lock { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(7,35,75,.45); color: #fff; }
.kak-lock svg { width: 34px; height: 34px; }
.kak-card-body { padding: 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.kak-card-body h3 { margin: 0; font-size: 16px; font-family: var(--kak-font-head, inherit); }
.kak-progress { height: 8px; background: #e3eaf2; border-radius: 10px; overflow: hidden; }
.kak-progress span { display: block; height: 100%; background: var(--kak-accent, #33CC33); }
.kak-progress-label { margin: 0; font-size: 12px; color: var(--kak-muted); }
.kak-locked-label { margin: 0; font-size: 13px; color: var(--kak-muted); display: flex; align-items: center; gap: 6px; }
.kak-locked-label svg { width: 15px; height: 15px; }
.kak-btn { display: inline-block; margin-top: auto; text-align: center; background: var(--kak-brand); color: var(--kak-on-brand, #fff) !important; font-weight: 600; padding: 11px 16px; border-radius: 10px; border: 0; cursor: pointer; text-decoration: none; }
.kak-btn:hover { filter: brightness(.95); }
.kak-btn-buy { background: var(--kak-accent, #33CC33); }
/* Kurs-Detail / Akkordeon (T5) */
.kak-course-head { margin-bottom: 20px; }
.kak-back { display: inline-flex; align-items: center; gap: 4px; color: var(--kak-brand); text-decoration: none; font-size: 14px; margin-bottom: 10px; }
.kak-module { border: 1px solid var(--kak-border); border-radius: 10px; margin-bottom: 12px; overflow: hidden; }
.kak-module-head { width: 100%; text-align: left; background: #f5f9ff; border: 0; padding: 14px 16px; font-weight: 600; font-size: 15px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.kak-lessons { list-style: none; margin: 0; padding: 0; }
.kak-lesson-link { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-top: 1px solid var(--kak-border); text-decoration: none; color: var(--kak-text, var(--kak-navy)); }
.kak-lesson-link .kak-check { width: 20px; height: 20px; color: var(--kak-accent, #33CC33); }
.kak-lesson-link .kak-check.is-empty { color: #cbd5e1; }
/* Lektion */
.kak-video { position: relative; aspect-ratio: 16/9; background: #000; border-radius: 10px; overflow: hidden; margin-bottom: 16px; }
.kak-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.kak-lesson-content { line-height: 1.6; }
.kak-lesson-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 24px; }
.kak-done-btn { background: var(--kak-accent, #33CC33); }
.kak-done-btn.is-done { background: #e3eaf2; color: var(--kak-navy) !important; }
/* Feed (T6/T7) */
.kak-composer { background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 14px; margin-bottom: 20px; }
.kak-composer textarea { width: 100%; min-height: 80px; border: 1px solid #ccd5e0; border-radius: 10px; padding: 10px 12px; font-size: 15px; box-sizing: border-box; font-family: inherit; }
.kak-post { background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.kak-post-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.kak-post-head img { border-radius: 50%; }
.kak-post-date { color: var(--kak-muted); font-size: 12px; margin-left: 6px; }
.kak-badge { margin-left: auto; background: #eaf5ff; color: var(--kak-brand); font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 10px; }
.kak-post-body { line-height: 1.6; word-wrap: break-word; overflow-wrap: anywhere; }
.kak-post-foot { display: flex; gap: 8px; margin-top: 12px; }
.kak-post-foot button { display: inline-flex; align-items: center; gap: 6px; background: #f5f9ff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 6px 12px; cursor: pointer; color: var(--kak-muted); font-size: 13px; }
.kak-post-foot button svg { width: 16px; height: 16px; }
.kak-like.is-active { color: #e0245e; border-color: #f5c6d3; }
.kak-delete { margin-left: auto; }
.kak-comments { margin-top: 14px; border-top: 1px solid var(--kak-border); padding-top: 12px; }
.kak-comment { display: flex; gap: 8px; padding: 8px 0; }
.kak-comment img { border-radius: 50%; }
.kak-comment-body { flex: 1; }
.kak-comment-author { font-weight: 600; font-size: 13px; }
.kak-comment-form textarea { width: 100%; min-height: 50px; border: 1px solid #ccd5e0; border-radius: 10px; padding: 8px 10px; box-sizing: border-box; font-family: inherit; }
.kak-msg { border-radius: 10px; padding: 8px 12px; margin: 8px 0; font-size: 13px; background: #fdecea; color: #b71c1c; }
.kak-msg.is-success { background: #edfaed; color: #1b5e20; }
.kak-loadmore { display: block; margin: 20px auto 0; }
@media (max-width: 600px) {
    .kak-grid { grid-template-columns: 1fr; }
    .kak-tab { padding: 10px; font-size: 14px; }
}

/* ── Gamification (V2.1): Level-Badge, Leaderboard, Rewards ── */
.kak-level { display: inline-block; margin-left: 6px; background: var(--kak-brand); color: #fff; font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 10px; vertical-align: middle; }
.kak-level-big { font-size: 15px; padding: 8px 14px; margin: 0; }
.kak-mystats { background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 16px; margin-bottom: 20px; }
.kak-mystats-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.kak-mystats-sub { margin: 2px 0 0; font-size: 13px; color: var(--kak-muted); }
.kak-range { display: flex; gap: 6px; margin-bottom: 16px; }
.kak-range-link { padding: 7px 14px; border: 1px solid var(--kak-border); border-radius: 10px; text-decoration: none; color: var(--kak-muted); font-size: 13px; font-weight: 600; }
.kak-range-link.is-active { background: var(--kak-brand); border-color: var(--kak-brand); color: #fff; }
.kak-board { list-style: none; margin: 0 0 16px; padding: 0; }
.kak-board-row { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.kak-board-row.is-me { border-color: var(--kak-brand); background: #eaf5ff; }
.kak-board-rank { width: 26px; font-weight: 700; color: var(--kak-muted); text-align: center; }
.kak-board-row img { border-radius: 50%; }
.kak-board-name { font-weight: 600; }
.kak-board-points { margin-left: auto; font-weight: 700; color: var(--kak-brand); }
.kak-board-own { font-size: 14px; color: var(--kak-muted); }
.kak-section-title { margin: 26px 0 12px; font-size: 17px; }
.kak-rewards { display: grid; gap: 12px; }
.kak-reward { display: flex; align-items: center; gap: 14px; background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 14px 16px; }
.kak-reward-body { flex: 1; }
.kak-reward-desc { margin: 3px 0 0; font-size: 13px; color: var(--kak-muted); }
.kak-reward .kak-btn { margin-top: 0; white-space: nowrap; }
.kak-reward .kak-btn:disabled { background: #cbd5e1; cursor: not-allowed; }
.kak-codes { list-style: none; margin: 0; padding: 0; }
.kak-codes li { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--kak-border); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.kak-codes code { font-size: 15px; font-weight: 700; color: var(--kak-navy); background: #f5f9ff; padding: 3px 10px; border-radius: 6px; }

/* Zentraler Katalog (1.1.4) */
.kak-cat { max-width: 1100px; }
.kak-cat-search { display: flex; gap: 8px; margin: 10px 0 14px; }
.kak-cat-search input { flex: 1; padding: 10px 12px; border: 1px solid var(--kak-border); border-radius: 10px; }
.kak-cat-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.kak-cat-chips a { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--kak-border); text-decoration: none; color: var(--kak-navy); }
.kak-cat-chips a.is-active { background: var(--kak-brand); border-color: var(--kak-brand); color: #fff; }
.kak-cat-heading { font-size: 20px; margin: 6px 0 12px; }
.kak-cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.kak-cat-card { display: flex; flex-direction: column; border: 1px solid var(--kak-border); border-radius: 10px; overflow: hidden; text-decoration: none; color: inherit; background: #fff; }
.kak-cat-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.kak-cat-card-body { padding: 12px 14px; }
.kak-cat-card h3 { margin: 0 0 6px; font-size: 17px; }
.kak-cat-meta { margin: 0 0 4px; color: var(--kak-muted); font-size: 14px; }
.kak-cat-price { font-weight: 700; color: var(--kak-navy); }
.kak-cat-pager { display: flex; gap: 16px; justify-content: center; margin: 20px 0; }
.kak-cat-hero { width: 100%; max-height: 380px; object-fit: cover; border-radius: 10px; }
.kak-cat-buy { display: flex; align-items: center; gap: 14px; margin: 10px 0 18px; }
.kak-cat-buy .kak-btn { margin-top: 0; }
.kak-cat-preview, .kak-cat-curriculum { margin: 22px 0; }
.kak-cat-curriculum details { border: 1px solid var(--kak-border); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.kak-cat-curriculum summary { font-weight: 600; cursor: pointer; }
.kak-cat-badge { background: var(--kak-accent, #33CC33); color: #fff; border-radius: 6px; padding: 1px 6px; font-size: 12px; }
.kak-cat-vendor { display: flex; gap: 12px; align-items: center; border-top: 1px solid var(--kak-border); padding-top: 14px; }
.kak-cat-vendor img { border-radius: 50%; }
@media (max-width: 600px) { .kak-cat-buy { flex-direction: column; align-items: stretch; } }

/* Community-Bereiche (1.2.3) */
.kak-space-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 14px; }
.kak-space-chips a { display: inline-flex; align-items: center; gap: 4px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--kak-border); text-decoration: none; color: var(--kak-navy); }
.kak-space-chips a.is-active { background: var(--kak-brand); border-color: var(--kak-brand); color: #fff; }
.kak-space-chips a.is-locked { color: var(--kak-muted); }
.kak-space-chips svg { width: 14px; height: 14px; }
.kak-space-tag { display: inline-block; margin-left: 8px; padding: 1px 8px; border-radius: 999px; background: #eef4fb; color: var(--kak-navy); font-size: 12px; text-decoration: none; }
.kak-composer select { padding: 6px 8px; border-radius: 8px; border: 1px solid var(--kak-border); }