/* Chords & scales course (/learn/akkordlar). Builds on proto.css + home.css + akkordlar.css (keyboard colours). */
.kurs { --c-root: #e2763a; --c-third: #3a86c8; --c-fifth: #2e9e5b; --c-seventh: #8a5cd0; --c-added: #d0458f; --c-scale: #3a86c8;
  max-width: 640px; padding-top: 12px; padding-bottom: calc(32px + env(safe-area-inset-bottom)); }
html.kurs-focus .site-header, html.kurs-focus .site-tabbar, html.kurs-focus .tabbar { display: none !important; }
html.kurs-focus body { padding-bottom: 0 !important; }
.kurs .eyebrow { color: var(--teal); }
.kurs h1 { font-size: 1.6rem; margin-top: 4px; }
.kurs .lead { margin-top: 6px; color: var(--ink-2); }
.overall { margin-top: 14px; }
.overall .bar { height: 8px; border-radius: 9px; background: var(--paper-2); overflow: hidden; }
.overall .bar span { display: block; height: 100%; width: 0; border-radius: 9px; background: var(--ok); }
.overall p { margin-top: 6px; font-size: 0.85rem; font-weight: 800; color: var(--ink-2); }
.unit { margin-top: 18px; }
.unit-n { font-size: 0.72rem; font-weight: 900; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.unit h2 { font-size: 1.15rem; margin-top: 2px; }
.lessons { list-style: none; margin: 6px 0 0; padding: 0; }
.lessons li + li .lesson-row { border-top: 1px solid var(--line); }
.lesson-row { display: flex; align-items: center; gap: 12px; min-height: 60px; padding: 8px 2px; text-decoration: none; color: var(--ink); }
.lesson-row:hover b { color: var(--accent-ink); }
.lr-n { width: 36px; height: 36px; flex: none; display: grid; place-items: center; border-radius: 50%; background: var(--paper-2); color: var(--muted); font-weight: 900; }
.lesson-row.is-done .lr-n { background: var(--ok); color: #fff; }
.lr-t { flex: 1; min-width: 0; display: grid; }
.lr-t b { font-size: 0.98rem; }
.lr-t span { font-size: 0.8rem; color: var(--muted); }
.lr-go { font-size: 1.3rem; font-weight: 800; color: var(--muted); }
.dict-link { display: block; margin-top: 20px; padding: 14px 16px; font-weight: 800; text-decoration: none; color: var(--accent-ink); border: 1px solid var(--line); box-shadow: none; }
.device-note { margin-top: 10px; font-size: 0.8rem; color: var(--muted); }

/* lesson */
#lesson-view { padding-bottom: 90px; }
.l-top { display: flex; align-items: center; gap: 10px; }
.icon-btn { width: 42px; height: 42px; flex: none; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 12px; background: var(--card); color: var(--ink); cursor: pointer; }
.l-name { flex: 1; min-width: 0; display: grid; }
.l-name b { font-size: 1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.l-name span { font-size: 0.78rem; color: var(--muted); }
.l-dots { display: flex; gap: 5px; margin-top: 12px; }
.l-dots i { flex: 1; height: 6px; border-radius: 9px; background: var(--paper-2); }
.l-dots i.on { background: var(--accent); }
.kurs .s-title { margin-top: 16px; font-size: 1.4rem; outline: none; }
.s-text { margin-top: 8px; color: var(--ink-2); font-size: 0.98rem; }
.s-text b { color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.chips span { padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); font-weight: 900; color: var(--muted); }
.chips span.now { border-color: var(--accent); color: var(--ink); box-shadow: 0 0 0 2px var(--accent-soft); }
.chips span.did { background: var(--ok); border-color: var(--ok); color: #fff; }
.opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.opt { min-height: 54px; padding: 8px 10px; border: 2px solid var(--line); border-radius: 16px; background: var(--card); color: var(--ink); font: inherit; font-weight: 800; cursor: pointer; }
.opt:hover:not(:disabled) { border-color: var(--accent); }
.opt.good { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, var(--card)); }
.opt.bad { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 14%, var(--card)); }
.opt.dim { opacity: 0.45; }
.kurs .kbd-wrap { margin-top: 14px; }
.kbd .sel rect { fill: var(--ink-2); }
.kbd .kw.sel rect { fill: #c9cde0; }
.kbd .good rect { fill: var(--ok) !important; }
.kbd .bad rect { fill: var(--bad) !important; }
.kbd .kw.hint rect { fill: #fff8ef; stroke: var(--accent); stroke-width: 1.5; }
.kbd .kb.hint rect { fill: #5a4636; }
.kbd .next-hint rect { stroke-dasharray: 4 3; stroke-width: 2.5; stroke: var(--ok); }
.kbd .kb.next-hint rect { fill: #2e6a48; }
.help { margin-top: 8px; text-align: center; font-size: 0.8rem; color: var(--muted); }
.plays { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.plays .btn { flex: 1 1 auto; min-height: 46px; }
.fb { margin-top: 12px; padding: 10px 12px; border-radius: 12px; font-weight: 800; font-size: 0.92rem; }
.fb.ok { background: color-mix(in srgb, var(--ok) 15%, var(--card)); color: var(--ok); }
.fb.bad { background: color-mix(in srgb, var(--bad) 13%, var(--card)); color: var(--bad); }
.fb.shown { background: var(--paper-2); color: var(--ink-2); }
.task-btns { display: flex; gap: 8px; margin-top: 10px; }
.task-btns .btn { flex: 1; min-height: 42px; }
.task-btns [hidden] { display: none; }
.next-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; padding: 10px 16px calc(12px + env(safe-area-inset-bottom)); background: rgba(var(--paper-rgb), 0.96); border-top: 1px solid var(--line); }
.next-bar .btn { max-width: 608px; margin: 0 auto; display: block; min-height: 52px; }
.next-bar .btn:disabled { opacity: 0.4; }

/* done */
#done-view { text-align: center; padding-top: 30px; }
.done-mark { width: 84px; height: 84px; margin: 0 auto 12px; display: grid; place-items: center; border-radius: 50%; background: var(--ok); color: #fff; font-size: 2.6rem; font-weight: 900; }
#done-view h1 { outline: none; }
.done-all { margin-top: 8px; color: var(--ink-2); }
.done-actions { display: grid; gap: 10px; margin-top: 20px; }
.done-actions [hidden] { display: none; }
.drill-link { display: grid; grid-template-columns: 1fr auto; gap: 2px 10px; margin-top: 16px; padding: 14px 16px; text-decoration: none; color: var(--ink); border: 1px solid var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.drill-link b { font-size: 1.05rem; }
.drill-link span:not(.pt-go) { grid-column: 1; font-size: 0.85rem; color: var(--ink-2); }
.drill-link .pt-go { grid-column: 2; grid-row: 1 / 3; align-self: center; font-size: 1.4rem; font-weight: 800; color: var(--accent-ink); }