/* ==========================================================================
   Training tab (training.js) — course hub, lesson player, quiz.
   Every class is prefixed ax-tr-. Tokens come from /tcn-app.css.
   ========================================================================== */

/* view.body is .ax-body (pre-wrap); reset for our layouts. */
.ax-tr { white-space: normal; font-size: 16px; line-height: 1.4; }

.ax-tr-eyebrow { font: 700 12px/1.2 var(--tx-font); letter-spacing: .08em; text-transform: uppercase; background: var(--tx-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.ax-tr-title { margin: 6px 0 0; font: 800 28px/1.15 var(--tx-font-display); letter-spacing: -.024em; color: #fff; }
.ax-tr-desc { margin: 10px 0 0; font-size: 16px; line-height: 1.55; color: var(--tx-label-2); }
.ax-tr-note { margin: 26px 16px 0; text-align: center; font-size: 13px; color: var(--tx-label-3); }

/* --- Skeletons --------------------------------------------------------------- */
.ax-tr-skel-hero { height: 214px; border-radius: var(--tx-radius); margin-bottom: 26px; }
.ax-tr-skel-h { height: 22px; width: 120px; margin: 0 4px 12px; border-radius: 8px; }
.ax-tr-skel-lesson { height: 96px; border-radius: 18px; margin-bottom: 10px; }
.ax-tr-skel-player { aspect-ratio: 16 / 9; border-radius: 18px; margin-bottom: 18px; }
.ax-tr-skel-line { height: 16px; border-radius: 8px; margin: 0 2px 12px; }
.ax-tr-skel-title { height: 64px; border-radius: 12px; margin: 10px 0 22px; }
.ax-tr-skel-opt { height: 64px; border-radius: 18px; margin-bottom: 10px; }
.ax-tr-w60 { width: 60%; }

/* --- Hero (course progress) --------------------------------------------------- */
.ax-tr-hero { padding: 20px; }
.ax-tr-hero::before { content: ""; position: absolute; right: -60px; top: -70px; width: 220px; height: 220px; border-radius: 50%; background: radial-gradient(circle, rgba(139,61,255,.35), transparent 65%); pointer-events: none; }
.ax-tr-hero-done::before { background: radial-gradient(circle, rgba(48,209,88,.28), transparent 65%); }
.ax-tr-hero-top { position: relative; display: flex; align-items: center; gap: 18px; }
.ax-tr-hero .ax-ring-label { font-size: 26px; }
.ax-tr-ring-of { font-size: 15px; font-weight: 700; color: var(--tx-label-3); }
.ax-tr-hero-txt { flex: 1; min-width: 0; }
.ax-tr-hero h2 { margin: 4px 0 6px; font: 800 21px/1.18 var(--tx-font-display); letter-spacing: -.02em; color: #fff; }
.ax-tr-meta { font: 600 14px/1.3 var(--tx-font); color: var(--tx-label-2); margin-bottom: 10px; font-variant-numeric: tabular-nums; }
.ax-tr-upline { position: relative; margin: 16px 0 0; padding: 12px 14px; border-radius: 14px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.06); font-size: 14px; line-height: 1.4; color: var(--tx-label-3); }
.ax-tr-upline b { color: #fff; font-weight: 600; }
.ax-tr-cta { position: relative; margin-top: 14px; }

.ax-tr-count { font: 600 14px/1 var(--tx-font); color: var(--tx-label-3); font-variant-numeric: tabular-nums; }

/* --- Lesson list (Apple TV / Masterclass style) --------------------------------- */
.ax-tr-lessons { display: flex; flex-direction: column; gap: 10px; }
.ax-tr-lesson { position: relative; display: flex; align-items: center; gap: 13px; width: 100%; padding: 10px 12px 10px 10px; border-radius: 18px; text-align: left; color: #fff;
  background: linear-gradient(180deg, var(--tx-raised-2), var(--tx-raised)); border: 1px solid var(--tx-line); box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: transform .16s var(--tx-ease), background-color .15s; }
.ax-tr-lesson:active { transform: scale(.98); }
.ax-tr-lesson.ax-tr-next { border-color: transparent;
  background: linear-gradient(135deg, rgba(40,18,62,.96), rgba(14,22,44,.96)) padding-box, var(--tx-grad) border-box;
  box-shadow: 0 18px 36px -22px rgba(176,40,255,.9); }
.ax-tr-lesson-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.ax-tr-lesson-k { display: flex; align-items: center; gap: 7px; font: 700 11.5px/1.2 var(--tx-font); letter-spacing: .06em; text-transform: uppercase; color: var(--tx-label-3); }
.ax-tr-lesson-t { font: 600 15.5px/1.28 var(--tx-font); color: #fff; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.ax-tr-lesson-d { font-size: 13px; line-height: 1.3; color: var(--tx-label-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ax-tr-lesson .ax-row-chev { margin-left: -2px; }
.ax-tr-tag { display: inline-flex; align-items: center; gap: 3px; padding: 3px 7px; border-radius: 999px; font: 700 10.5px/1 var(--tx-font); letter-spacing: .04em; }
.ax-tr-tag svg { width: 11px; height: 11px; stroke-width: 3; }
.ax-tr-tag-next { background: var(--tx-grad); color: #fff; }
.ax-tr-tag-done { background: rgba(48,209,88,.15); color: #30d158; }

/* Thumbnails (16:9, ytimg) */
.ax-tr-thumb { position: relative; flex: none; width: 128px; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; display: grid; place-items: center;
  background: linear-gradient(145deg, #2a1645, #0d1a33) center / cover no-repeat; box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.ax-tr-thumb[style] { background-color: #16151f; background-size: cover; background-position: center; }
.ax-tr-thumb::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0,0,0,0) 40%, rgba(0,0,0,.45)); }
.ax-tr-play { position: relative; z-index: 1; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; color: #fff;
  background: rgba(20,18,30,.55); border: 1px solid rgba(255,255,255,.22); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.ax-tr-play svg { width: 15px; height: 15px; fill: currentColor; stroke-width: 1.5; margin-left: 2px; }
.ax-tr-thumb-done .ax-tr-play { background: #30d158; border-color: transparent; box-shadow: 0 4px 14px rgba(48,209,88,.5); }
.ax-tr-thumb-done .ax-tr-play svg { fill: none; stroke-width: 3; margin: 0; }
.ax-tr-thumb-done { filter: saturate(.85); }
.ax-tr-thumb-bar { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; z-index: 1; background: #30d158; }
.ax-tr-next .ax-tr-play { background: var(--tx-grad); border-color: transparent; box-shadow: 0 6px 18px rgba(176,40,255,.6); }
.ax-tr-thumb-sm { width: 76px; border-radius: 9px; }
.ax-tr-thumb-sm .ax-tr-play { width: 26px; height: 26px; }
.ax-tr-thumb-sm .ax-tr-play svg { width: 12px; height: 12px; }
.ax-tr-thumb-quiz { background: var(--tx-grad); }
.ax-tr-thumb-quiz .ax-tr-play svg, .ax-tr-locked .ax-tr-play svg { fill: none; stroke-width: 2.2; margin: 0; }
.ax-tr-thumb-quiz.ax-tr-locked { background: linear-gradient(145deg, #2b2a37, #17161f); }

/* --- Final quiz card ------------------------------------------------------------ */
.ax-tr-quiz { display: flex; align-items: center; gap: 14px; width: 100%; padding: 16px; border-radius: var(--tx-radius); text-align: left; color: #fff;
  background: linear-gradient(180deg, var(--tx-raised-2), var(--tx-raised)); border: 1px solid var(--tx-line); transition: transform .16s var(--tx-ease); }
.ax-tr-quiz:active { transform: scale(.98); }
.ax-tr-quiz-ic { width: 52px; height: 52px; border-radius: 16px; flex: none; display: grid; place-items: center; color: #fff; background: var(--tx-grad); box-shadow: 0 10px 24px -10px rgba(176,40,255,.9); }
.ax-tr-quiz-ic svg { width: 26px; height: 26px; }
.ax-tr-quiz-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.ax-tr-quiz-k { font: 700 11.5px/1.2 var(--tx-font); letter-spacing: .06em; text-transform: uppercase; color: var(--tx-label-3); }
.ax-tr-quiz-t { font: 700 18px/1.2 var(--tx-font-display); letter-spacing: -.01em; }
.ax-tr-quiz-s { font-size: 13.5px; color: var(--tx-label-3); }
.ax-tr-quiz-open { border-color: transparent; background: linear-gradient(135deg, rgba(40,18,62,.96), rgba(14,22,44,.96)) padding-box, var(--tx-grad) border-box; }
.ax-tr-quiz-locked .ax-tr-quiz-ic { background: rgba(255,255,255,.07); color: var(--tx-label-3); box-shadow: none; border: 1px solid rgba(255,255,255,.08); }
.ax-tr-quiz-locked .ax-tr-quiz-t { color: var(--tx-label-2); }

/* Certificate badge */
.ax-tr-cert { position: relative; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 4px; width: 100%; padding: 26px 18px 18px; border-radius: var(--tx-radius); color: #fff; overflow: hidden;
  border: 1.5px solid transparent;
  background: radial-gradient(120% 80% at 50% 0%, rgba(255,214,10,.16), transparent 60%) padding-box, linear-gradient(160deg, #1d1530, #0c1220) padding-box, linear-gradient(135deg, #ffd60a, #e01cff 45%, #22e3ff) border-box;
  box-shadow: 0 24px 50px -28px rgba(255,190,40,.55); transition: transform .16s var(--tx-ease); }
button.ax-tr-cert:active { transform: scale(.98); }
.ax-tr-cert::before { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 35%, rgba(255,255,255,.1) 50%, transparent 65%); transform: translateX(-100%); animation: ax-tr-sheen 4.5s ease-in-out 1s infinite; pointer-events: none; }
.ax-tr-cert-medal { width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center; margin-bottom: 8px; color: #1a1205;
  background: radial-gradient(circle at 35% 30%, #fff6c4, #ffd60a 45%, #f0a500); box-shadow: 0 0 0 5px rgba(255,214,10,.15), 0 10px 30px rgba(255,190,40,.45); }
.ax-tr-cert-medal svg { width: 32px; height: 32px; fill: currentColor; stroke-width: 1.2; }
.ax-tr-cert-k { font: 700 11.5px/1.2 var(--tx-font); letter-spacing: .1em; text-transform: uppercase; color: rgba(255,230,150,.8); }
.ax-tr-cert-t { font: 800 22px/1.2 var(--tx-font-display); letter-spacing: -.02em; }
.ax-tr-cert-s { font-size: 14px; color: var(--tx-label-2); font-variant-numeric: tabular-nums; }
.ax-tr-cert-link { display: inline-flex; align-items: center; gap: 2px; margin-top: 10px; font: 600 14px/1 var(--tx-font); color: var(--tx-cyan); }
.ax-tr-cert-link svg { width: 15px; height: 15px; stroke-width: 2.4; }
.ax-tr-cert-static { margin-top: 22px; }
@keyframes ax-tr-sheen { 0%, 60% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

/* Attempts */
.ax-tr-att { cursor: default; }
.ax-tr-att:active { background: none; }
.ax-tr-att-val { display: inline-flex; align-items: center; gap: 10px; }
.ax-tr-att-score { font: 600 15px/1 var(--tx-font); color: var(--tx-label-2); font-variant-numeric: tabular-nums; }
.ax-tr-pass-dot { font: 700 11px/1 var(--tx-font); color: #30d158; letter-spacing: .03em; text-transform: uppercase; margin-left: 4px; }

/* --- Lesson screen -------------------------------------------------------------- */
.ax-tr-player { position: relative; width: 100%; padding-bottom: 56.25%; height: 0; border-radius: 18px; overflow: hidden; background: #000;
  box-shadow: 0 0 0 1px rgba(255,255,255,.08), 0 30px 60px -30px rgba(120,40,255,.7); }
.ax-tr-player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.ax-tr-noplayer { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; color: var(--tx-label-3); font-size: 14px; }
.ax-tr-noplayer svg { width: 34px; height: 34px; }
.ax-tr-lhead { margin: 20px 4px 0; }
.ax-tr-lstate { margin-top: 12px; min-height: 26px; }
.ax-tr-lessonpage .ax-tr-desc { margin: 14px 4px 0; }
.ax-tr-mini .ax-row { min-height: 66px; }
.ax-tr-mini .ax-row + .ax-row::before { left: 102px; }
.ax-tr-mini .ax-row-title { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 15px; line-height: 1.3; }
.ax-tr-mini-k { display: block; margin-bottom: 2px; font: 700 11px/1.2 var(--tx-font); letter-spacing: .06em; text-transform: uppercase; color: var(--tx-label-3); }

/* Footer */
.ax-tr-foot { max-width: 680px; margin: 0 auto; }
.ax-tr-foot.ax-btns .ax-btn { flex: 1; padding: 0 14px; }
.ax-tr-foot .ax-btn svg { width: 18px; height: 18px; }
.ax-tr-foot-split { display: flex; align-items: center; gap: 12px; }
.ax-tr-foot-split .ax-btn { flex: 1; }
.ax-tr-donechip { display: inline-flex; align-items: center; gap: 7px; min-height: 50px; padding: 0 16px; border-radius: 999px; font: 700 15px/1 var(--tx-font); color: #30d158; background: rgba(48,209,88,.12); border: 1px solid rgba(48,209,88,.25); white-space: nowrap; }
.ax-tr-donechip svg { width: 20px; height: 20px; }

/* --- Quiz ------------------------------------------------------------------------ */
.ax-tr-intro, .ax-tr-gate, .ax-tr-result { text-align: center; padding: 18px 8px 8px; }
.ax-tr-intro .ax-tr-desc, .ax-tr-gate .ax-tr-desc, .ax-tr-result .ax-tr-desc { max-width: 440px; margin-left: auto; margin-right: auto; }
.ax-tr-medal { width: 92px; height: 92px; margin: 6px auto 18px; border-radius: 28px; display: grid; place-items: center; color: #fff; background: var(--tx-grad);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35), 0 24px 50px -18px rgba(176,40,255,.9); transform: rotate(-6deg); }
.ax-tr-medal svg { width: 46px; height: 46px; stroke-width: 1.7; transform: rotate(6deg); }
.ax-tr-medal-done { background: radial-gradient(circle at 35% 30%, #fff6c4, #ffd60a 45%, #f0a500); color: #1a1205; box-shadow: 0 24px 50px -18px rgba(255,190,40,.8); }
.ax-tr-medal-done svg { fill: currentColor; }
.ax-tr-medal-lock { background: rgba(255,255,255,.07); color: var(--tx-label-3); border: 1px solid rgba(255,255,255,.1); box-shadow: none; transform: none; }
.ax-tr-medal-lock svg { transform: none; }
.ax-tr-chips { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 24px 0 0; }
.ax-tr-chips span { display: flex; flex-direction: column; gap: 5px; padding: 14px 6px; border-radius: 16px; background: var(--tx-raised); border: 1px solid var(--tx-line); font: 600 12px/1 var(--tx-font); color: var(--tx-label-3); text-transform: uppercase; letter-spacing: .04em; }
.ax-tr-chips b { font: 800 22px/1 var(--tx-font-display); color: #fff; letter-spacing: -.02em; text-transform: none; }
.ax-tr-callout { display: flex; align-items: flex-start; gap: 10px; margin-top: 14px; padding: 13px 14px; border-radius: 14px; text-align: left; font-size: 14px; line-height: 1.4; color: var(--tx-label-2); background: rgba(255,255,255,.05); border: 1px solid var(--tx-line); }
.ax-tr-callout svg { width: 20px; height: 20px; flex: none; color: var(--tx-cyan); }
.ax-tr-callout-ok { background: rgba(48,209,88,.1); border-color: rgba(48,209,88,.22); }
.ax-tr-callout-ok svg { color: #30d158; }
.ax-tr-gatebar { max-width: 280px; margin: 24px auto 8px; }
.ax-tr-gatecap { font-size: 13px; color: var(--tx-label-3); }

.ax-tr-qhead { padding: 2px 0 6px; }
.ax-tr-qcount { display: flex; justify-content: space-between; margin: 0 2px 9px; font: 600 13px/1 var(--tx-font); color: var(--tx-label-3); font-variant-numeric: tabular-nums; }
.ax-tr-qcount span:first-child { color: #fff; }
.ax-tr-qbar { height: 6px; }
.ax-tr-qbar i { transition: width .5s var(--tx-ease); }
.ax-tr-qtitle { margin: 14px 2px 22px; font: 800 26px/1.2 var(--tx-font-display); letter-spacing: -.022em; color: #fff; }
.ax-tr-opts { display: flex; flex-direction: column; gap: 10px; }
.ax-tr-opt { display: flex; align-items: center; gap: 14px; width: 100%; min-height: 64px; padding: 14px 16px; border-radius: 18px; text-align: left; color: #fff;
  font: 500 16.5px/1.35 var(--tx-font) !important; border: 1.5px solid var(--tx-line);
  background: linear-gradient(180deg, var(--tx-raised-2), var(--tx-raised));
  transition: transform .14s var(--tx-ease), border-color .15s, background-color .15s, box-shadow .2s; }
.ax-tr-opt:active { transform: scale(.98); }
.ax-tr-opt.ax-on { border-color: transparent; background: linear-gradient(135deg, #2a1442, #12203d) padding-box, var(--tx-grad) border-box; box-shadow: 0 16px 34px -20px rgba(176,40,255,.95); }
.ax-tr-letter { width: 32px; height: 32px; flex: none; border-radius: 50%; display: grid; place-items: center; font: 700 14px/1 var(--tx-font); color: var(--tx-label-2); border: 1.5px solid rgba(255,255,255,.18); transition: background-color .15s, border-color .15s; }
.ax-tr-opt.ax-on .ax-tr-letter { background: var(--tx-grad); border-color: transparent; color: #fff; animation: ax-tr-pop .32s var(--tx-ease); }
.ax-tr-letter svg { width: 17px; height: 17px; stroke-width: 3; }
.ax-tr-opt-t { flex: 1; min-width: 0; }
@keyframes ax-tr-pop { 0% { transform: scale(.6); } 60% { transform: scale(1.12); } 100% { transform: none; } }

.ax-tr-step { animation: ax-tr-in .38s var(--tx-ease) both; }
.ax-tr-step.ax-tr-step-back { animation-name: ax-tr-in-back; }
@keyframes ax-tr-in { from { opacity: 0; transform: translateX(28px); } }
@keyframes ax-tr-in-back { from { opacity: 0; transform: translateX(-28px); } }

/* Result */
.ax-tr-result-ring { display: flex; justify-content: center; margin: 8px 0 18px; }
.ax-tr-result-ring .ax-ring-label { font-size: 40px; }
.ax-tr-result-ring .ax-ring-label small { font-size: 12px; margin-top: 6px; }
.ax-tr-result-ring .ax-ring circle { stroke-width: 8; }
.ax-tr-result-pass .ax-tr-result-ring .ax-ring { filter: drop-shadow(0 0 24px rgba(48,209,88,.35)); }
.ax-tr-result-pass .ax-tr-title { animation: ax-tr-pop .5s var(--tx-ease) .3s both; }

/* Confetti burst */
.ax-tr-confetti { position: absolute; left: 50%; top: 32%; width: 0; height: 0; z-index: 60; pointer-events: none; }
.ax-tr-confetti i { position: absolute; left: -4px; top: -7px; width: 8px; height: 14px; border-radius: 2px; opacity: 0; animation: ax-tr-confetti var(--d, 2.4s) cubic-bezier(.2,.7,.4,1) var(--dl, 0s) forwards; }
.ax-tr-confetti i.ax-tr-c-round { width: 9px; height: 9px; border-radius: 50%; }
@keyframes ax-tr-confetti {
  0% { opacity: 1; transform: translate(0, 0) rotate(0) scale(.5); }
  25% { opacity: 1; transform: translate(var(--bx), var(--by)) rotate(calc(var(--r) * .3)) scale(1); }
  85% { opacity: 1; }
  100% { opacity: 0; transform: translate(calc(var(--bx) * 1.25), calc(var(--by) + 60vh)) rotate(var(--r)) scale(1); }
}

@media (max-width: 380px) {
  .ax-tr-thumb { width: 108px; }
  .ax-tr-thumb-sm { width: 68px; }
  .ax-tr-hero-top { gap: 14px; }
  .ax-tr-qtitle { font-size: 23px; }
}
@media (prefers-reduced-motion: reduce) {
  .ax-tr-step, .ax-tr-opt.ax-on .ax-tr-letter, .ax-tr-result-pass .ax-tr-title { animation: none; }
  .ax-tr-cert::before { animation: none; display: none; }
  .ax-tr-confetti { display: none; }
  .ax-tr-qbar i { transition: none; }
}