/* Credits (online app only): credits.js. Every class is cr-. Plain fills, the app's mint/teal/navy tokens + hard-hat yellow coin. */
:root { --cr-coin: #f6b81d; --cr-coin-soft: #fff4d6; --cr-coin-ink: #8a5a00; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --cr-coin: #f1c04d; --cr-coin-soft: #3a2f12; --cr-coin-ink: #f5d27a; } }
:root[data-theme="dark"] { --cr-coin: #f1c04d; --cr-coin-soft: #3a2f12; --cr-coin-ink: #f5d27a; }

/* sidebar: balance on the "Credit của tôi" button */
.cr-badge { margin-left: auto; min-width: 24px; padding: 1px 8px; border-radius: 999px; background: var(--cr-coin-soft); color: var(--cr-coin-ink);
  font-weight: 900; font-size: .78rem; text-align: center; }
.cr-badge.zero { background: var(--bad-soft); color: var(--bad); }
.side-min .cr-badge { display: none; }

/* ---------------------------------------------------------------- dialog */
.cr-veil { position: fixed; inset: 0; z-index: 900; display: grid; place-items: center; padding: 16px;
  background: rgba(15, 28, 36, .45); animation: cr-fade .15s ease-out; }
.cr-dlg { position: relative; width: min(460px, 100%); max-height: calc(100vh - 32px); overflow: auto; background: var(--panel); color: var(--ink);
  border-radius: var(--r); padding: 26px 26px 22px; box-shadow: 0 20px 60px rgba(15, 28, 36, .3); animation: cr-pop .18s ease-out; }
.cr-dlg.cr-pay { width: min(760px, 100%); }
.cr-dlg h2 { margin: 0; color: var(--navy); }
.cr-dlg h2::before, .cr-h::before { display: none; }
.cr-x { position: absolute; top: 10px; right: 12px; width: 34px; height: 34px; border: 0; border-radius: 50%; background: none; color: var(--ink-3);
  font-size: 1.5rem; line-height: 1; cursor: pointer; }
.cr-x:hover { background: var(--panel-2); color: var(--ink); }
.cr-act { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.cr-act .btn.primary .kbd { color: inherit; border-color: currentColor; opacity: .75; font-family: inherit; }
.cr-msg { min-height: 1.2em; margin: 8px 0 0; color: var(--bad); font-size: .88rem; }
@keyframes cr-fade { from { opacity: 0; } }
@keyframes cr-pop { from { opacity: 0; transform: translateY(8px) scale(.98); } }

/* unlock */
.cr-lesson { display: flex; gap: 14px; align-items: center; padding: 14px; margin: 4px 30px 14px 0; border-radius: 16px; background: var(--cc-soft); }
.cr-lesson small { font-size: .7rem; font-weight: 900; text-transform: uppercase; letter-spacing: .02em; color: var(--cc); }
.cr-lesson h2 { font-size: 1.15rem; line-height: 1.25; }
.cr-lesson p { margin: 2px 0 0; }
.cr-lock { flex: none; display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; background: var(--panel); }
.cr-lock .ic { width: 34px; height: 34px; }
.cr-bal { display: flex; gap: 10px; align-items: center; padding: 10px 12px; border-radius: 12px; background: var(--cr-coin-soft); color: var(--cr-coin-ink); font-size: .92rem; }
.cr-bal .ic { width: 26px; height: 26px; flex: none; }
.cr-bal.low { background: var(--bad-soft); color: var(--bad); }
.cr-done { text-align: center; padding: 6px 0 2px; }
.cr-done img { width: 92px; animation: cr-hop .6s ease-out; }
.cr-done h2 { font-size: 1.4rem; margin: 6px 0 4px; }
.cr-done .cr-act { justify-content: center; }
@keyframes cr-hop { 0% { transform: translateY(14px) scale(.9); opacity: 0; } 60% { transform: translateY(-6px); opacity: 1; } }

/* QR payment */
.cr-wait { display: flex; gap: 10px; align-items: center; justify-content: center; padding: 40px 0; color: var(--ink-2); }
.cr-pay-grid { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 22px; align-items: start; }
.cr-qr { display: grid; justify-items: center; gap: 8px; padding: 10px; border-radius: 18px; background: #fff; border: 1.5px solid var(--line); }
.cr-qr img { width: 100%; height: auto; max-width: 260px; display: block; }
.cr-qr small { color: #5b6b80; font-size: .76rem; text-align: center; }
.cr-kick { font-size: .7rem; font-weight: 900; text-transform: uppercase; letter-spacing: .03em; color: var(--accent); }
.cr-info h2 { font-size: 1.3rem; margin: 2px 30px 10px 0; }
.cr-steps { margin: 0 0 12px; padding-left: 20px; color: var(--ink-2); font-size: .9rem; line-height: 1.55; }
.cr-kvs { display: grid; gap: 2px; border-radius: 14px; background: var(--panel-2); padding: 6px 10px; }
.cr-kv { display: grid; grid-template-columns: 112px minmax(0, 1fr) auto; gap: 8px; align-items: center; padding: 5px 0; font-size: .9rem; }
.cr-kv > span { color: var(--ink-3); }
.cr-kv > b { color: var(--navy); overflow-wrap: anywhere; }
.cr-code .cr-kv { margin: 2px -6px; padding: 7px 6px; border-radius: 10px; background: var(--sel-fill); outline: 1.5px dashed var(--sel-line); }
.cr-code .cr-kv > b { color: var(--sel-ink); font-size: 1.05rem; letter-spacing: .06em; }
.cr-copy { border: 1px solid var(--line); background: var(--panel); color: var(--ink-2); border-radius: 8px; padding: 3px 9px; font: inherit; font-size: .78rem; cursor: pointer; }
.cr-copy:hover { border-color: var(--accent); color: var(--accent); }
.cr-copy.ok { border-color: var(--ok); color: var(--ok); }
.cr-status { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 12px; padding: 10px 12px; border-radius: 12px;
  background: var(--accent-soft); color: var(--ink-2); font-size: .9rem; }
.cr-status.late { background: var(--warn-soft); color: var(--warn); }
.cr-left { margin-left: auto; font-variant-numeric: tabular-nums; color: var(--ink-3); }
.cr-spin { width: 16px; height: 16px; flex: none; border-radius: 50%; border: 2.5px solid var(--accent-soft); border-top-color: var(--accent); animation: cr-rot .8s linear infinite; }
.cr-sim { margin-top: 10px; color: var(--ink-3); }
@keyframes cr-rot { to { transform: rotate(360deg); } }
@media (max-width: 720px) { .cr-pay-grid { grid-template-columns: 1fr; } .cr-qr { max-width: 280px; margin: 0 auto; } }

/* ---------------------------------------------------------------- 💳 Credit của tôi */
.cr-top { display: grid; grid-template-columns: minmax(240px, 300px) minmax(0, 1fr); gap: 16px; margin: 14px 0 6px; }
.cr-wallet { display: flex; gap: 14px; align-items: center; padding: 20px; border-radius: var(--r); background: var(--cr-coin-soft); }
.cr-wallet img { width: 76px; flex: none; }
.cr-wallet small { font-size: .74rem; font-weight: 900; text-transform: uppercase; letter-spacing: .03em; color: var(--cr-coin-ink); }
.cr-big { font-size: 2.8rem; font-weight: 900; line-height: 1; color: var(--navy); }
.cr-big span { font-size: 1rem; font-weight: 700; color: var(--ink-2); }
.cr-wallet p { margin: 6px 0 0; color: var(--ink-2); }
.cr-packs { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }
.cr-pack { position: relative; display: grid; gap: 6px; justify-items: start; text-align: left; font: inherit; color: var(--ink); cursor: pointer;
  padding: 18px 16px 14px; border-radius: var(--r); background: var(--panel); border: 1.5px solid var(--line); box-shadow: var(--shadow); transition: transform .12s, border-color .12s; }
.cr-pack:hover { transform: translateY(-2px); border-color: var(--accent); }
.cr-pack.first { border-color: var(--sel-line); background: var(--sel-fill); }
.cr-tag { position: absolute; top: -10px; right: 12px; padding: 2px 10px; border-radius: 999px; background: var(--navy); color: var(--panel); font-size: .72rem; font-weight: 800; }
.cr-pack.first .cr-tag { background: var(--sel-line); color: #fff; }
.cr-pn { display: flex; align-items: center; gap: 6px; color: var(--ink-2); font-weight: 700; }
.cr-pn .ic { width: 26px; height: 26px; }
.cr-pn b { font-size: 1.9rem; color: var(--navy); line-height: 1; }
.cr-pp { font-size: 1.15rem; font-weight: 900; color: var(--navy); }
.cr-per { font-size: .8rem; color: var(--ink-3); display: flex; gap: 6px; }
.cr-pack .btn { margin-top: 4px; pointer-events: none; }
.cr-h { display: flex; align-items: center; gap: 8px; font-size: 1.1rem; margin: 26px 0 10px; color: var(--navy); }
.cr-h .ic { width: 24px; height: 24px; }
.cr-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 10px; }
.cr-row { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 14px; background: var(--panel); border: 1.5px solid var(--line); }
.cr-tt { flex: 1; min-width: 0; display: grid; }
.cr-tt b { color: var(--navy); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cr-tt small { color: var(--cc); font-weight: 700; font-size: .76rem; }
.cr-hist { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: 14px; overflow: hidden; font-size: .9rem; }
.cr-hist th, .cr-hist td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); }
.cr-hist th { background: var(--panel-2); color: var(--ink-3); font-size: .78rem; font-weight: 800; }
.cr-hist td:last-child, .cr-hist th:last-child { text-align: right; font-weight: 900; }
.cr-hist .plus { color: var(--ok); } .cr-hist .minus { color: var(--ink-2); }
@media (max-width: 860px) { .cr-top { grid-template-columns: 1fr; } }

/* a locked lesson in the lists (home / library cards, flyout rows) */
.hb-lesson.cr-locked .hb-pbar, .hb-lesson.cr-locked .hb-lnums { opacity: .45; }
.cr-lockpill { display: inline-flex; align-items: center; gap: 4px; padding: 1px 8px 1px 4px; border-radius: 999px; background: var(--cr-coin-soft);
  color: var(--cr-coin-ink); font-size: .74rem; font-weight: 800; white-space: nowrap; }
.cr-lockpill .ic { width: 18px; height: 18px; }

/* a games-only lesson (not opened with a credit): its lesson pages are greyed with a small lock; the games stay free */
nav button.cr-navlock .lbl, nav button.cr-navlock .ico { opacity: .5; }
.cr-navlk { margin-left: auto; display: inline-flex; opacity: .7; }
.cr-navlk .ic { width: 16px; height: 16px; }
.side-min .cr-navlk { display: none; }