.tk-app{--ink:#1d2640;--muted:#5c6880;--accent:#3558df;--soft:#f3f5fd;max-width:1120px;margin:0 auto;padding:24px 18px 72px;color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",sans-serif}.tk-app *{box-sizing:border-box}.tk-header{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-bottom:24px;border-bottom:1px solid #dce2f4}.tk-header h1{font-size:clamp(28px,4vw,42px);line-height:1.1;margin:5px 0 0}.tk-kicker{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}.tk-user{display:flex;align-items:center;gap:16px}.tk-user form{margin:0}.tk-link,.tk-back{border:0;background:none;color:var(--accent);font-weight:700;cursor:pointer;text-decoration:none;padding:6px}.tk-panel{background:white;border:1px solid #dce2f4;border-radius:22px;box-shadow:0 10px 34px rgba(32,50,100,.07);padding:30px}.tk-center{text-align:center;margin:56px auto;max-width:540px}.tk-center h2,.tk-login h2{margin:8px 0}.tk-big-icon{font-size:44px;color:var(--accent)}.tk-login{max-width:440px;margin:56px auto}.tk-login p{color:var(--muted)}.tk-login form{display:grid;gap:18px;margin-top:26px}.tk-login label{display:grid;gap:7px;font-weight:700}.tk-login input{width:100%;padding:13px 14px;border:1px solid #b9c4e4;border-radius:10px;font:inherit}.tk-button,.tk-secondary{border:0;border-radius:11px;background:var(--accent);color:#fff;font:inherit;font-weight:800;padding:13px 20px;cursor:pointer}.tk-button:hover{background:#2142c6}.tk-secondary{background:#e9edff;color:#2342bd}.tk-grades{display:flex;gap:9px;flex-wrap:wrap;margin:24px 0 34px}.tk-grades a{padding:8px 14px;border:1px solid #cbd4ef;border-radius:999px;color:var(--ink);text-decoration:none;font-weight:700}.tk-grades a.active,.tk-grades a:hover{background:var(--accent);border-color:var(--accent);color:#fff}.tk-intro h2,.tk-deck-head h2{font-size:clamp(24px,3vw,32px);margin:0 0 8px}.tk-intro p,.tk-deck-head p,.tk-deck p{color:var(--muted)}.tk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin-top:26px}.tk-deck{display:flex;flex-direction:column;min-height:238px;padding:22px;border:1px solid #dce2f4;border-radius:20px;background:#fff;color:var(--ink);text-decoration:none;transition:transform .15s,box-shadow .15s}.tk-deck:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(28,50,119,.12)}.tk-deck-icon{font-size:27px;color:#f1ac23;margin-bottom:17px}.tk-deck h3{font-size:20px;margin:9px 0}.tk-deck p{line-height:1.5;margin:0}.tk-open{font-weight:800;color:var(--accent);margin-top:auto;padding-top:20px}.tk-back{display:inline-block;margin:0 0 12px}.tk-deck-head{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-bottom:22px}.tk-count{white-space:nowrap;color:var(--accent);font-weight:800;background:#edf0ff;padding:8px 12px;border-radius:999px}.tk-player{max-width:730px;margin:0 auto}.tk-progress{display:flex;justify-content:space-between;font-weight:700;color:var(--muted);margin-bottom:10px}.tk-progressbar{height:8px;background:#e7ebf8;border-radius:99px;overflow:hidden;margin-bottom:18px}.tk-progressbar span{display:block;width:0;height:100%;background:#55b99e;transition:width .2s}.tk-flashcard{min-height:340px;padding:34px;background:linear-gradient(135deg,#fff,#f3f5ff);border:2px solid #ccd5f4;border-radius:25px;box-shadow:0 16px 35px rgba(40,57,126,.1);cursor:pointer;display:flex;flex-direction:column;justify-content:center;text-align:center;outline-offset:5px}.tk-flashcard.is-flipped{background:linear-gradient(135deg,#f0fff8,#e8faf5);border-color:#8cd6bf}.tk-card-label{font-size:12px;font-weight:900;letter-spacing:.15em;color:var(--accent);margin-bottom:20px}.tk-card-text{font-size:clamp(21px,3vw,30px);font-weight:750;line-height:1.35;white-space:pre-wrap}.tk-card-hint,.tk-card-source{font-size:14px;color:var(--muted);margin-top:17px}.tk-card-tip{font-size:13px;color:#76829c;margin-top:36px}.tk-controls{display:flex;justify-content:center;gap:12px;margin-top:18px}.tk-controls button{min-width:170px}.tk-small-controls{margin-top:8px}.tk-small-controls button{min-width:0}.tk-done{text-align:center;padding:22px;background:#effaf5;border-radius:12px;color:#16684b;font-weight:800}@media(max-width:600px){.tk-header,.tk-deck-head{display:block}.tk-user{margin-top:14px}.tk-flashcard{min-height:300px;padding:25px}.tk-controls{flex-wrap:wrap}.tk-controls button{flex:1}}
.tk-app [hidden]{display:none!important}

/* 3.0: kompakt kártyák és teljes szélességű tanulói felület. */
.tk-app{max-width:none;width:calc(100vw - 32px);margin-left:calc(50% - 50vw + 16px);margin-right:0;padding:12px 0 40px}
.tk-header{min-height:65px;padding-bottom:10px}
.tk-header h1{font-size:26px;margin:2px 0 0}
.tk-kicker{font-size:11px}
.tk-grades{gap:6px;margin:12px 0 14px}
.tk-grades a{padding:5px 11px;font-size:14px}
.tk-intro h2{font-size:23px;margin:0 0 2px}
.tk-intro p{margin:0;font-size:14px}
.tk-grid{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;margin-top:14px}
.tk-deck{min-height:128px;padding:14px;border-radius:13px}
.tk-deck-icon{font-size:17px;margin-bottom:3px}
.tk-deck h3{font-size:16px;line-height:1.25;margin:5px 0 8px}
.tk-open{padding-top:8px;font-size:13px}
.tk-back{margin-bottom:4px}
.tk-deck-head{align-items:center;margin-bottom:9px;gap:12px}
.tk-deck-head h2{font-size:21px;line-height:1.2;margin:2px 0 0}
.tk-count{padding:5px 9px;font-size:13px}
.tk-player{width:min(100%,720px);max-width:none}
.tk-progress{margin-bottom:5px;font-size:13px}
.tk-progressbar{height:5px;margin-bottom:9px}
.tk-flashcard{height:clamp(230px,42vh,340px);min-height:0;overflow-y:auto;padding:20px 24px;border-radius:17px;justify-content:flex-start;gap:8px}
.tk-card-label{margin:0;font-size:11px}
.tk-card-text{font-size:clamp(18px,2vw,24px);line-height:1.32;overflow-wrap:anywhere}
.tk-card-hint,.tk-card-source{font-size:13px;line-height:1.35;margin-top:2px;overflow-wrap:anywhere}
.tk-card-tip{font-size:12px;margin-top:auto;padding-top:4px}
.tk-controls{margin-top:9px}
.tk-controls button{min-width:145px;padding:9px 13px}
.tk-small-controls{margin-top:2px}
.tk-login,.tk-center{margin-top:18px}
.tk-login,.tk-center{width:100%;max-width:none;margin:18px 0;text-align:center}
.tk-login form{width:min(100%,440px);margin:16px auto 0;text-align:left}
@media(max-width:600px){.tk-app{width:calc(100vw - 20px);margin-left:calc(50% - 50vw + 10px)}.tk-header h1{font-size:22px}.tk-grades{margin:10px 0}.tk-deck-head{display:flex}.tk-deck-head h2{font-size:18px}.tk-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tk-deck{min-height:130px;padding:11px}.tk-deck h3{font-size:14px}.tk-flashcard{height:clamp(220px,40vh,300px);padding:16px}.tk-controls button{min-width:0}}
.tk-flashcard{position:relative;background:radial-gradient(circle at 92% 10%,#dfe8ff 0,transparent 32%),linear-gradient(135deg,#fff 0%,#f8faff 100%);border:1px solid #bfcdf4;box-shadow:0 12px 30px rgba(38,65,150,.14),inset 0 1px 0 #fff;transform-origin:center center;backface-visibility:hidden}
.tk-flashcard::before{content:"";position:absolute;top:0;left:18px;right:18px;height:4px;border-radius:0 0 8px 8px;background:linear-gradient(90deg,#3558df,#75a2ff)}
.tk-flashcard.is-flipped{background:radial-gradient(circle at 92% 10%,#d9f5e8 0,transparent 32%),linear-gradient(135deg,#fff 0%,#f4fcf8 100%);border-color:#a3d9bf}
.tk-flashcard.is-flipped::before{background:linear-gradient(90deg,#2a9d74,#71d5aa)}
.tk-flashcard.is-turning-out{animation:tk-turn-out .16s ease-in forwards}
.tk-flashcard.is-turning-in{animation:tk-turn-in .16s ease-out forwards}
@keyframes tk-turn-out{from{transform:perspective(1000px) rotateY(0)}to{transform:perspective(1000px) rotateY(90deg)}}
@keyframes tk-turn-in{from{transform:perspective(1000px) rotateY(-90deg)}to{transform:perspective(1000px) rotateY(0)}}
@media(prefers-reduced-motion:reduce){.tk-flashcard.is-turning-out,.tk-flashcard.is-turning-in{animation:none}}
.tk-brand{display:flex;align-items:center;gap:10px}
.tk-brand-icon{flex:none;width:40px;height:40px;border-radius:10px}
.tk-deck-icon{display:block;width:22px;height:22px;flex:none;margin-bottom:4px;border-radius:5px}

/* 5.1: a teljes szövegcsoport középen, a segítség és forrás is vele együtt. */
.tk-flashcard{gap:0}
.tk-card-content{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;width:100%;min-width:0;flex-shrink:0;margin-block:auto;text-align:center}
.tk-card-text{max-width:100%;white-space:pre-line;text-wrap:balance;overflow-wrap:anywhere;text-align:center}
.tk-card-hint,.tk-card-source{max-width:100%;margin-top:0;text-align:center}
.tk-card-tip{flex-shrink:0;margin-top:0;text-align:center}

/* A pakli adatai a fejlécben vannak, így a nagyobb kártya feljebb kezdődik. */
.tk-header-study{display:grid;grid-template-columns:max-content minmax(0,1fr) max-content;align-items:center;gap:clamp(14px,2.5vw,36px);min-height:70px;padding:4px 0 8px}
.tk-header-deck{display:grid;grid-template-columns:max-content minmax(0,max-content) max-content;justify-content:center;align-items:center;gap:clamp(10px,1.5vw,22px);min-width:0}
.tk-header-deck .tk-back{margin:0;padding:6px 0;white-space:nowrap}
.tk-header-deck-meta{min-width:0}
.tk-header-deck-meta h2{margin:2px 0 0;font-size:clamp(20px,1.6vw,26px);line-height:1.15;overflow-wrap:anywhere}
.tk-header-study+.tk-grades{margin:8px 0 7px}
.tk-player{width:min(100%,920px)}
.tk-flashcard{height:clamp(400px,55vh,500px);padding:30px 44px}
.tk-card-label{font-size:12px}
.tk-card-text{font-size:clamp(25px,2.5vw,36px);line-height:1.28}
.tk-card-hint,.tk-card-source{font-size:16px}
.tk-card-tip{font-size:13px}
.tk-header-deck{grid-template-columns:max-content minmax(0,max-content) max-content max-content}
.tk-level{display:inline-flex;align-items:center;width:max-content;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800;white-space:nowrap}
.tk-level-easy{background:#e5f6ed;color:#136945}
.tk-level-hard{background:#efe9ff;color:#643ca8}
.tk-deck-hard{border-color:#d9c9f2}
.tk-deck .tk-level{margin-top:3px}
@media(max-width:1100px){
  .tk-header-study{grid-template-columns:minmax(0,1fr) auto;gap:6px 12px}
  .tk-header-study .tk-header-deck{grid-column:1/-1;grid-row:2;justify-self:stretch;justify-content:start}
}
@media(max-width:600px){
  .tk-header-study{display:grid;gap:5px 8px}
  .tk-header-study .tk-user{margin-top:0;gap:8px;font-size:13px}
  .tk-header-study .tk-header-deck{grid-template-columns:minmax(0,1fr) auto;gap:2px 8px}
  .tk-header-deck .tk-back{grid-column:1/-1;padding:3px 0;font-size:14px}
  .tk-header-deck .tk-count{display:none}
  .tk-header-deck-meta h2{font-size:19px}
  .tk-header-study+.tk-grades{margin:7px 0}
  .tk-flashcard{height:clamp(350px,45vh,420px);padding:20px 18px}
  .tk-card-text{font-size:clamp(23px,5.7vw,28px)}
  .tk-card-hint,.tk-card-source{font-size:14px}
}