/* ===== FahrFix — Führerschein Trainer ===== */
:root{
  --bg:#0f172a;
  --bg-soft:#1e293b;
  --card:#1e293b;
  --card-2:#273449;
  --line:#334155;
  --text:#f1f5f9;
  --muted:#94a3b8;
  --primary:#6366f1;
  --primary-d:#4f46e5;
  --accent:#22d3ee;
  --green:#22c55e;
  --green-d:#16a34a;
  --red:#ef4444;
  --red-d:#dc2626;
  --amber:#f59e0b;
  --radius:18px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:radial-gradient(1200px 600px at 80% -10%,#1e2a4a 0%,var(--bg) 55%);
  color:var(--text);
  min-height:100dvh;
  overflow-x:hidden;
}
#app{max-width:560px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;position:relative}

/* loader */
.loader-screen{flex:1;display:flex;align-items:center;justify-content:center;min-height:100dvh}
.spinner{width:46px;height:46px;border-radius:50%;border:4px solid var(--line);border-top-color:var(--primary);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== generic ===== */
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.95rem 1.25rem;border-radius:14px;font-size:1rem;font-weight:700;
  background:var(--primary);color:#fff;transition:transform .12s ease,filter .12s ease,background .2s;
  width:100%;
}
.btn:active{transform:scale(.97)}
.btn:hover{filter:brightness(1.07)}
.btn.secondary{background:var(--card-2);color:var(--text);border:1px solid var(--line)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--muted)}
.btn.success{background:var(--green)}
.btn.lg{padding:1.1rem 1.25rem;font-size:1.08rem}
.btn:disabled{opacity:.5;pointer-events:none}

.fade-in{animation:fadeIn .35s ease both}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ===== Login ===== */
.login{flex:1;display:flex;flex-direction:column;justify-content:center;padding:2rem 1.4rem;gap:1.1rem}
.brand{display:flex;flex-direction:column;align-items:center;gap:.6rem;margin-bottom:.6rem;text-align:center}
.brand .logo{
  width:74px;height:74px;border-radius:22px;display:grid;place-items:center;font-size:2rem;color:#fff;
  background:linear-gradient(135deg,var(--primary),var(--accent));box-shadow:var(--shadow)
}
.brand h1{font-size:1.7rem;letter-spacing:-.5px}
.brand p{color:var(--muted);font-size:.95rem;max-width:320px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.3rem;box-shadow:var(--shadow)}
.field{margin-bottom:1rem}
.field label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:.4rem;font-weight:600}
.field input{
  width:100%;padding:.9rem 1rem;border-radius:12px;background:var(--bg);border:1px solid var(--line);
  color:var(--text);font-size:1rem;transition:border .2s
}
.field input:focus{outline:none;border-color:var(--primary)}
.note{font-size:.78rem;color:var(--muted);line-height:1.5;margin-top:.4rem}
.error-msg{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.4);color:#fca5a5;padding:.75rem .9rem;border-radius:12px;font-size:.9rem;display:none}
.error-msg.show{display:block}

/* ===== top bar ===== */
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:.8rem;
  padding:.85rem 1rem;background:rgba(15,23,42,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)
}
.topbar .back{font-size:1.1rem;color:var(--muted);width:38px;height:38px;border-radius:10px;display:grid;place-items:center}
.topbar .back:hover{background:var(--card-2)}
.topbar .title{font-weight:700;flex:1}
.pill{display:inline-flex;align-items:center;gap:.4rem;background:var(--card-2);border:1px solid var(--line);padding:.35rem .7rem;border-radius:999px;font-size:.82rem;font-weight:700}
.pill .fa-fire{color:var(--amber)}
.pill .fa-heart{color:var(--red)}

/* ===== home / dashboard ===== */
.screen{flex:1;padding:1rem 1rem 6rem;display:flex;flex-direction:column;gap:1rem}
.hero-card{
  background:linear-gradient(135deg,var(--primary-d),#7c3aed);border-radius:var(--radius);
  padding:1.3rem;box-shadow:var(--shadow);position:relative;overflow:hidden
}
.hero-card::after{content:"\\f1b9";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;right:-10px;bottom:-18px;font-size:7rem;opacity:.12}
.hero-card h2{font-size:1.25rem;margin-bottom:.3rem}
.hero-card p{color:#e0e7ff;font-size:.9rem;margin-bottom:1rem}
.progress-wrap{background:rgba(255,255,255,.18);border-radius:999px;height:10px;overflow:hidden}
.progress-bar{height:100%;background:#fff;border-radius:999px;width:0;transition:width .6s ease}
.progress-label{display:flex;justify-content:space-between;font-size:.78rem;color:#e0e7ff;margin-top:.5rem;font-weight:600}

.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:.7rem}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.9rem .6rem;text-align:center}
.stat .v{font-size:1.4rem;font-weight:800}
.stat .l{font-size:.72rem;color:var(--muted);margin-top:.2rem}
.stat .v.green{color:var(--green)}
.stat .v.amber{color:var(--amber)}
.stat .v.cyan{color:var(--accent)}

.section-title{font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;margin:.4rem .2rem -.2rem}

.mode-grid{display:grid;grid-template-columns:1fr 1fr;gap:.8rem}
.mode{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;
  display:flex;flex-direction:column;gap:.5rem;text-align:left;transition:transform .12s,border .2s
}
.mode:active{transform:scale(.97)}
.mode:hover{border-color:var(--primary)}
.mode .ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:1.15rem;color:#fff}
.mode.learn .ic{background:linear-gradient(135deg,#6366f1,#22d3ee)}
.mode.exam .ic{background:linear-gradient(135deg,#f59e0b,#ef4444)}
.mode.weak .ic{background:linear-gradient(135deg,#ef4444,#ec4899)}
.mode.topics .ic{background:linear-gradient(135deg,#22c55e,#10b981)}
.mode h3{font-size:1.02rem}
.mode p{font-size:.78rem;color:var(--muted);line-height:1.4}

/* ===== topic list ===== */
.topic{
  background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.95rem 1rem;
  display:flex;align-items:center;gap:.9rem;transition:border .2s
}
.topic:hover{border-color:var(--primary)}
.topic .tic{width:38px;height:38px;border-radius:10px;background:var(--card-2);display:grid;place-items:center;color:var(--accent)}
.topic .meta{flex:1;text-align:left}
.topic .meta .n{font-weight:700;font-size:.95rem}
.topic .meta .c{font-size:.76rem;color:var(--muted)}
.topic .mini-bar{height:6px;background:var(--line);border-radius:999px;margin-top:.4rem;overflow:hidden}
.topic .mini-bar > i{display:block;height:100%;background:var(--green);border-radius:999px}
.topic .chev{color:var(--muted)}
.subtopic{margin-left:.6rem}

/* ===== quiz ===== */
.quiz{flex:1;display:flex;flex-direction:column;padding:1rem 1rem 1.5rem}
.quiz-progress{display:flex;gap:4px;margin-bottom:1rem}
.quiz-progress > i{flex:1;height:6px;border-radius:999px;background:var(--line);transition:background .3s}
.quiz-progress > i.done{background:var(--green)}
.quiz-progress > i.wrong{background:var(--red)}
.quiz-progress > i.current{background:var(--primary)}
.q-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;box-shadow:var(--shadow);margin-bottom:1rem}
.q-img{width:100%;border-radius:12px;margin-bottom:1rem;background:#0b1222;display:block}
.q-text{font-size:1.18rem;font-weight:700;line-height:1.4}
.q-hint{font-size:.78rem;color:var(--muted);margin-top:.5rem;display:flex;align-items:center;gap:.4rem}
.answers{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1rem}
.answer{
  display:flex;align-items:center;gap:.85rem;text-align:left;width:100%;
  background:var(--card);border:2px solid var(--line);border-radius:14px;padding:.95rem 1rem;
  font-size:1rem;line-height:1.35;transition:border .15s,background .15s,transform .1s
}
.answer:active{transform:scale(.985)}
.answer .box{
  flex:none;width:26px;height:26px;border-radius:8px;border:2px solid var(--line);
  display:grid;place-items:center;font-size:.8rem;color:transparent;transition:all .15s
}
.answer.selected{border-color:var(--primary);background:rgba(99,102,241,.12)}
.answer.selected .box{background:var(--primary);border-color:var(--primary);color:#fff}
.answer .a-img{width:64px;border-radius:8px;flex:none}
/* after reveal */
.answer.correct{border-color:var(--green);background:rgba(34,197,94,.15)}
.answer.correct .box{background:var(--green);border-color:var(--green);color:#fff}
.answer.incorrect{border-color:var(--red);background:rgba(239,68,68,.13)}
.answer.incorrect .box{background:var(--red);border-color:var(--red);color:#fff}
.answer.missed{border-color:var(--amber);background:rgba(245,158,11,.1)}
.answer.locked{pointer-events:none}

/* feedback banner */
.feedback{
  border-radius:14px;padding:1rem 1.1rem;margin-bottom:1rem;display:none;align-items:center;gap:.8rem;
  font-weight:700;animation:fadeIn .25s ease both
}
.feedback.show{display:flex}
.feedback.good{background:rgba(34,197,94,.15);border:1px solid rgba(34,197,94,.5);color:#86efac}
.feedback.bad{background:rgba(239,68,68,.13);border:1px solid rgba(239,68,68,.5);color:#fca5a5}
.feedback .fic{font-size:1.5rem}
.feedback .sub{font-weight:500;font-size:.85rem;color:var(--muted);margin-top:.15rem}

.quiz-actions{margin-top:auto;display:flex;flex-direction:column;gap:.6rem}

/* ===== result ===== */
.result{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem 1.4rem;gap:1rem}
.result .big-ic{width:96px;height:96px;border-radius:50%;display:grid;place-items:center;font-size:2.6rem;color:#fff;box-shadow:var(--shadow)}
.result.pass .big-ic{background:linear-gradient(135deg,var(--green),#10b981)}
.result.fail .big-ic{background:linear-gradient(135deg,var(--red),#f59e0b)}
.result h2{font-size:1.6rem}
.result .score{font-size:3rem;font-weight:800}
.result .detail{color:var(--muted);font-size:.95rem;line-height:1.5}
.result .actions{width:100%;display:flex;flex-direction:column;gap:.6rem;margin-top:1rem}

/* confetti dots */
.toast{position:fixed;left:50%;bottom:1.5rem;transform:translateX(-50%) translateY(20px);background:var(--card-2);border:1px solid var(--line);color:var(--text);padding:.7rem 1.1rem;border-radius:999px;font-size:.9rem;font-weight:700;opacity:0;transition:all .3s;z-index:50;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.empty{text-align:center;color:var(--muted);padding:3rem 1rem}
.empty i{font-size:2.5rem;margin-bottom:.6rem;opacity:.6}

.streak-badge{display:flex;align-items:center;gap:.5rem;justify-content:center;font-size:.85rem;color:var(--amber);font-weight:700}