/* ============================================================================
   TESTKAV SKILLS — HOME · «آموزش پیش از آزمون» (introduction band) — ch-095 v2.2 (calm)
   A sibling of the challenge band (home-challenge.css) with its own colour world: a violet night («شب بنفش») with lilac
   as the signature and the brand amber as the light. Copy (start side): a kicker chip, a two-line title whose second
   line follows the scene on screen, one line, one button and one quiet link. The visual is a live
   «study desk»: the chapters of an exam, the lesson on screen (text / podcast / video / custom org training) and one
   progress bar — nothing else. Same in both site themes; every rule is scoped to .tktr; motion is driven by
   home-training.js and respects prefers-reduced-motion. Palette: change the --tktr-* tokens to re-colour the band.
   ============================================================================ */
.tktr{--tktr-bg-a:#2b1a5e;--tktr-bg-b:#1f1247;--tktr-bg-c:#150b33;                 /* the band, top → bottom */
  --tktr-glow-1:rgba(167,139,250,.3);--tktr-glow-2:rgba(255,157,60,.1);             /* corner glows */
  --tktr-orb-a:167,139,250;--tktr-orb-b:244,114,182;                                 /* the two drifting orbs (rgb) */
  --tktr-panel-a:rgba(31,18,71,.92);--tktr-panel-b:rgba(17,9,42,.97);--tktr-deep:#0f0826;   /* the desk */
  --tktr-li:#c4b5fd;--tktr-li-rgb:196,181,253;                                        /* lilac: kicker, active tile */
  --tktr-ink:#f6f3ff;--tktr-soft:rgba(246,243,255,.76);--tktr-faint:rgba(246,243,255,.5);
  --tktr-line:rgba(246,243,255,.12);--tktr-line-strong:rgba(246,243,255,.24);
  --tktr-amber:#ffc218;--tktr-ok:#7ff0b8;
  position:relative;isolation:isolate;overflow:hidden;color:var(--tktr-ink);
  background:
    radial-gradient(1100px 640px at 88% 4%,var(--tktr-glow-1),transparent 62%),
    radial-gradient(820px 560px at 4% 100%,var(--tktr-glow-2),transparent 60%),
    linear-gradient(180deg,var(--tktr-bg-a) 0%,var(--tktr-bg-b) 52%,var(--tktr-bg-c) 100%);
  padding:clamp(52px,5.8vw,88px) 0 clamp(56px,6vw,92px)}
.tktr *,.tktr *::before,.tktr *::after{box-sizing:border-box}
.tktr .tr-icon{width:18px;height:18px;flex:none}
/* ambient: two slow orbs */
.tktr-sky{position:absolute;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.tktr-orb{position:absolute;border-radius:50%;will-change:transform}
.tktr-orb--a{left:-6%;top:-14%;width:min(760px,70vw);aspect-ratio:1;
  background:radial-gradient(closest-side,rgba(var(--tktr-orb-a),.36),rgba(var(--tktr-orb-a),.1) 45%,transparent 72%);animation:tktr-drift-a 28s ease-in-out infinite alternate}
.tktr-orb--b{right:-8%;bottom:-30%;width:min(640px,60vw);aspect-ratio:1;
  background:radial-gradient(closest-side,rgba(var(--tktr-orb-b),.18),rgba(var(--tktr-orb-b),.05) 45%,transparent 72%);animation:tktr-drift-b 34s ease-in-out infinite alternate}
@keyframes tktr-drift-a{to{transform:translate(9%,12%)}}
@keyframes tktr-drift-b{to{transform:translate(-10%,-8%)}}

.tktr-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 clamp(32px,5vw,80px);align-items:center}

/* ---------- copy ---------- */
.tktr-kicker{display:inline-flex;align-items:center;gap:9px;margin:0;padding:6px 14px 6px 13px;border-radius:999px;
  border:1px solid rgba(var(--tktr-li-rgb),.34);background:rgba(var(--tktr-li-rgb),.1);
  font-family:var(--tk-font-heading);font-size:13.5px;font-weight:700;line-height:1.5;color:var(--tktr-li)}
.tktr-kicker__dot{position:relative;flex:none;width:8px;height:8px;border-radius:50%;background:var(--tktr-li);box-shadow:0 0 10px rgba(var(--tktr-li-rgb),.8)}
.tktr .tktr-title{margin:20px 0 0;font-family:var(--tk-font-heading);font-weight:950;font-size:clamp(32px,3.6vw,52px);line-height:1.45;letter-spacing:0;color:var(--tktr-ink)}
.tktr-title__a,.tktr-title__b{display:block}
.tktr-title__a{font-size:.8em;font-weight:950;line-height:1.5}
.tktr-word-wrap{display:inline-block;vertical-align:bottom;overflow:hidden;line-height:inherit}
.tktr-word{display:inline-block;color:var(--tktr-amber);white-space:nowrap;
  background:linear-gradient(var(--tktr-amber),var(--tktr-amber)) no-repeat 0 92%/100% 3px;padding-bottom:2px;
  transition:transform .32s var(--tk-ease),opacity .32s var(--tk-ease)}
.tktr-word.is-out{transform:translateY(-.55em);opacity:0}
.tktr-word.is-in{transform:translateY(.55em);opacity:0;transition:none}
.tktr-lede{max-width:44ch;margin:14px 0 0;font-size:clamp(16px,1.3vw,19px);font-weight:700;line-height:1.85;color:var(--tktr-soft)}

/* the one button of the band and a quiet link */
.tktr-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:26px}
.tktr-go{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 26px;border-radius:999px;
  font-family:inherit;font-size:15px;font-weight:800;line-height:1;color:#191307;text-decoration:none;white-space:nowrap;background:linear-gradient(180deg,#ffd75a,#f3b705);
  box-shadow:0 14px 34px -14px rgba(255,194,24,.7),inset 0 1px 0 rgba(255,255,255,.5);transition:transform .2s var(--tk-ease),box-shadow .2s var(--tk-ease)}
.tktr-go svg{width:18px;height:18px;flex:none}
.tktr-go:hover{transform:translateY(-1px);box-shadow:0 18px 40px -14px rgba(255,194,24,.85),inset 0 1px 0 rgba(255,255,255,.55)}
.tktr-go:focus-visible{outline:2px solid var(--tktr-li);outline-offset:3px}
.tktr-more{font-size:14px;font-weight:700;color:var(--tktr-soft);text-decoration:none;border-bottom:1px solid rgba(var(--tktr-li-rgb),.4);padding-bottom:2px;transition:color .2s var(--tk-ease),border-color .2s var(--tk-ease)}
.tktr-more:hover{color:var(--tktr-ink);border-color:var(--tktr-li)}

/* ---------- the study desk ---------- */
.tktr-visual{position:relative;margin:0;min-width:0;perspective:1400px}
.tktr-visual::before{content:"";position:absolute;z-index:-1;inset:-8% -4%;pointer-events:none;
  background:radial-gradient(60% 55% at 50% 45%,rgba(var(--tktr-orb-a),.3),transparent 70%)}
.tktr-console{position:relative;max-width:560px;margin-inline:auto;border-radius:18px;
  background:linear-gradient(180deg,var(--tktr-panel-a) 0%,var(--tktr-panel-b) 100%);border:1px solid rgba(246,243,255,.16);
  box-shadow:0 60px 120px -44px rgba(8,3,30,.95),0 0 0 1px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.1);
  transform:rotateX(var(--tktr-rx,0deg)) rotateY(var(--tktr-ry,0deg));transform-style:preserve-3d;transition:transform .45s var(--tk-ease)}
.tktr-console__bar{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--tktr-line);border-radius:18px 18px 0 0;background:rgba(246,243,255,.04)}
.tktr-dots{display:flex;gap:6px;flex:none}
.tktr-dots i{width:10px;height:10px;border-radius:50%;background:rgba(246,243,255,.14)}
.tktr-dots i:first-child{background:#ff5f57}.tktr-dots i:nth-child(2){background:#febc2e}.tktr-dots i:last-child{background:#28c840}
.tktr-console__name{flex:1;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-family:var(--tk-font-heading);font-size:15.5px;font-weight:800;color:var(--tktr-ink)}
.tktr-console__body{display:grid;grid-template-columns:150px minmax(0,1fr);gap:18px;padding:20px 18px}

/* chapters, on the start side */
.tktr-chapters{position:relative;margin:0;padding:0;list-style:none;display:grid;gap:10px;align-content:start}
.tktr-chapters li{position:relative;display:flex;align-items:center;gap:10px;font-size:12.5px;line-height:1.5;color:var(--tktr-faint);transition:color .35s var(--tk-ease)}
.tktr-chapters li i{flex:none;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;border:1px solid var(--tktr-line-strong);
  font-style:normal;font-size:11px;font-weight:800;color:var(--tktr-faint);transition:background .35s var(--tk-ease),border-color .35s var(--tk-ease),color .35s var(--tk-ease),box-shadow .35s var(--tk-ease)}
.tktr-chapters li + li::before{content:"";position:absolute;inset-inline-start:11.5px;top:-11px;width:1px;height:12px;background:var(--tktr-line-strong)}
.tktr-chapters li span{min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.tktr-chapters li.is-done{color:var(--tktr-soft)}
.tktr-chapters li.is-done i{background:var(--tktr-amber);border-color:var(--tktr-amber);color:#1d1407;font-size:0}
.tktr-chapters li.is-done i::after{content:"";display:block;width:4px;height:8px;margin-top:-2px;border:solid #1d1407;border-width:0 2px 2px 0;transform:rotate(45deg)}
.tktr-chapters li.is-now{color:var(--tktr-ink);font-weight:700}
.tktr-chapters li.is-now i{border-color:var(--tktr-li);color:var(--tktr-li);box-shadow:0 0 0 4px rgba(var(--tktr-li-rgb),.16)}

/* the lesson on screen: a title, one media (CSS shows the one of the scene), one progress bar */
.tktr-lesson{display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:12px;min-width:0;padding:14px 16px;border-radius:12px;background:var(--tktr-deep);border:1px solid var(--tktr-line)}
.tktr-lesson__t{font-size:14px;font-weight:800;line-height:1.55;color:var(--tktr-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tktr-media{position:relative;min-height:104px}
.tktr-media > div{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .35s var(--tk-ease)}
.tktr-console.is-text .tktr-media__text,.tktr-console.is-audio .tktr-media__audio,.tktr-console.is-video .tktr-media__video,.tktr-console.is-org .tktr-media__org{opacity:1;visibility:visible}
/* text: lines of a page with a figure */
.tktr-media__text{display:grid;gap:10px;align-content:start;padding-top:4px}
.tktr-media__text i{display:block;height:7px;width:calc(var(--w,1) * 100%);border-radius:999px;background:rgba(246,243,255,.14)}
.tktr-media__text i.is-fig{height:30px;width:100%;border-radius:8px;background:rgba(var(--tktr-li-rgb),.1);border:1px dashed rgba(var(--tktr-li-rgb),.32)}
/* audio: play and a waveform */
.tktr-media__audio{display:flex;align-items:center;gap:12px}
.tktr-media__play{display:grid;place-items:center;flex:none;width:36px;height:36px;border-radius:50%;color:#1d1407;background:var(--tktr-amber);box-shadow:0 10px 24px -10px rgba(255,194,24,.8)}
.tktr-media__play .tr-icon{width:20px;height:20px}
.tktr-media__play--big{width:50px;height:50px}
.tktr-media__play--big .tr-icon{width:26px;height:26px}
.tktr-wave{display:flex;align-items:center;gap:3px;flex:1;min-width:0;height:40px;direction:ltr}
.tktr-wave i{flex:1;height:calc(22% + (var(--h,.5) * 70%));border-radius:2px;background:rgba(var(--tktr-li-rgb),.3)}
.tktr-wave i:nth-child(1){--h:.3}.tktr-wave i:nth-child(2){--h:.6}.tktr-wave i:nth-child(3){--h:.9}.tktr-wave i:nth-child(4){--h:.5}.tktr-wave i:nth-child(5){--h:.75}.tktr-wave i:nth-child(6){--h:.4}
.tktr-wave i:nth-child(7){--h:.85}.tktr-wave i:nth-child(8){--h:.55}.tktr-wave i:nth-child(9){--h:.35}.tktr-wave i:nth-child(10){--h:.7}.tktr-wave i:nth-child(11){--h:.95}.tktr-wave i:nth-child(12){--h:.45}
.tktr-wave i:nth-child(13){--h:.65}.tktr-wave i:nth-child(14){--h:.3}.tktr-wave i:nth-child(15){--h:.8}.tktr-wave i:nth-child(16){--h:.5}.tktr-wave i:nth-child(17){--h:.9}.tktr-wave i:nth-child(18){--h:.4}
.tktr-wave i:nth-child(19){--h:.6}.tktr-wave i:nth-child(20){--h:.75}
.tktr-wave i:nth-child(-n+8){background:var(--tktr-li)}
.tktr-console.is-audio .tktr-wave i{animation:tktr-wave 1.4s ease-in-out infinite alternate;animation-delay:calc(var(--h,.5) * -1.4s)}
@keyframes tktr-wave{to{transform:scaleY(.55)}}
/* video: a frame with a big play */
.tktr-media__video{display:grid;place-items:center;border-radius:10px;background:radial-gradient(80% 90% at 50% 100%,rgba(var(--tktr-orb-b),.18),transparent 70%),linear-gradient(180deg,#1a0f3d,#0b0620);border:1px solid var(--tktr-line)}
/* org: three members and how far each one is */
.tktr-media__org{display:grid;gap:10px;align-content:center}
.tktr-media__org span{display:grid;grid-template-columns:auto minmax(0,1fr);grid-template-rows:auto auto;align-items:center;gap:4px 10px;font-size:12px;font-weight:700;color:var(--tktr-soft);white-space:nowrap}
.tktr-media__org em{grid-row:1 / 3;display:grid;place-items:center;width:26px;height:26px;border-radius:50%;font-style:normal;font-size:11px;font-weight:800;color:var(--tktr-ink);background:rgba(var(--tktr-li-rgb),.18);border:1px solid rgba(var(--tktr-li-rgb),.35)}
.tktr-media__org i{position:relative;height:5px;border-radius:999px;background:rgba(246,243,255,.1)}
.tktr-media__org i::before{content:"";position:absolute;inset-block:0;inset-inline-start:0;width:calc(var(--v,0) * 100%);border-radius:999px;background:var(--tktr-ok)}
/* progress of the scene */
.tktr-progress{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px}
.tktr-progress__bar{position:relative;display:block;height:6px;border-radius:999px;background:rgba(246,243,255,.1);overflow:hidden}
.tktr-progress__bar b{position:absolute;inset:0 auto 0 0;width:calc(var(--v,0) * 100%);border-radius:inherit;background:linear-gradient(90deg,var(--tktr-li),var(--tktr-amber));transition:width .6s var(--tk-ease)}
.tktr-progress > b{font-family:var(--tk-font-heading);font-size:13px;font-weight:900;color:var(--tktr-ink);min-width:2.6em;text-align:center}
/* scene change: the whole desk crossfades */
.tktr-console__body,.tktr-console__bar{transition:opacity .35s var(--tk-ease)}
.tktr-console.is-swapping .tktr-console__body,.tktr-console.is-swapping .tktr-console__bar{opacity:0}

/* ---------- entrance (home-training.js adds .is-in when the band scrolls into view) ---------- */
.tktr.is-armed .tktr-kicker,.tktr.is-armed .tktr-title,.tktr.is-armed .tktr-lede,.tktr.is-armed .tktr-actions{opacity:0;transform:translateY(14px)}
.tktr.is-armed .tktr-console{opacity:0;transform:translateY(26px) scale(.98)}
.tktr.is-in .tktr-kicker,.tktr.is-in .tktr-title,.tktr.is-in .tktr-lede,.tktr.is-in .tktr-actions{opacity:1;transform:none;transition:opacity .7s var(--tk-ease),transform .7s var(--tk-ease)}
.tktr.is-in .tktr-title{transition-delay:.08s}.tktr.is-in .tktr-lede{transition-delay:.16s}.tktr.is-in .tktr-actions{transition-delay:.28s}
.tktr.is-in .tktr-console{opacity:1;transform:rotateX(var(--tktr-rx,0deg)) rotateY(var(--tktr-ry,0deg));transition:opacity .8s var(--tk-ease) .15s,transform .9s var(--tk-ease) .15s}
.tktr.is-live .tktr-console{transition:transform .45s var(--tk-ease)}

@media (prefers-reduced-motion:reduce){
  .tktr-orb,.tktr-console.is-audio .tktr-wave i{animation:none}
  .tktr *,.tktr *::after,.tktr *::before{transition:none!important}
  .tktr-console{transform:none!important}
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .tktr-grid{grid-template-columns:minmax(0,1fr) minmax(0,.94fr)}
}
@media (max-width:900px){
  .tktr-grid{grid-template-columns:minmax(0,1fr);gap:40px 0}
  .tktr-copy{text-align:center}
  .tktr-lede{margin-inline:auto}
  .tktr-actions{justify-content:center}
  .tktr-console{max-width:560px}
}
@media (max-width:640px){
  .tktr{padding:48px 0 52px}
  .tktr .tktr-title{margin-top:16px;font-size:clamp(34px,11.2vw,46px);line-height:1.38}
  .tktr-title__a{font-size:.74em}
  .tktr-word{padding-bottom:4px;background-size:100% 4px;background-position:0 94%}
  .tktr-lede{margin-top:12px;font-size:17px}
  .tktr-actions{margin-top:22px;gap:14px}
  .tktr-go{width:100%}
  .tktr-console__body{grid-template-columns:minmax(0,1fr);padding:14px 14px 14px;gap:14px}
  .tktr-console__bar{padding-inline:14px}
  .tktr-chapters{grid-auto-flow:column;grid-template-columns:none;gap:6px;overflow:hidden}
  .tktr-chapters li{flex:none;gap:6px;font-size:11.5px}
  .tktr-chapters li span{display:none}
  .tktr-chapters li.is-now span{display:inline}
  .tktr-chapters li + li::before{display:none}
}
@media (hover:none){
  .tktr-go:hover{transform:none}
}