:root{
  --bg:#07111f;
  --panel:#0d1b2e;
  --panel2:#10233a;
  --panel3:#132b46;
  --line:#1f3d5e;
  --text:#edf6ff;
  --muted:#8fa9c3;
  --cyan:#36c7ff;
  --blue:#3a86ff;
  --green:#39e58c;
  --red:#ff4d6d;
  --gold:#ffd166;
  --purple:#9b5cff;
  --shadow:0 24px 65px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:Arial,Helvetica,sans-serif;background:
radial-gradient(circle at 15% 10%,rgba(58,134,255,.15),transparent 30%),
radial-gradient(circle at 85% 15%,rgba(155,92,255,.14),transparent 26%),
linear-gradient(180deg,#06101c,#081421 45%,#07111f 100%);color:var(--text)}
body{min-height:100vh;padding:18px}
button,textarea{font:inherit}
.app-shell{
  width:min(980px,100%);margin:0 auto;border:1px solid rgba(92,157,215,.22);
  background:linear-gradient(180deg,rgba(13,27,46,.98),rgba(9,20,34,.98));
  border-radius:30px;box-shadow:var(--shadow);overflow:hidden;position:relative
}
.app-shell:before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(120deg,rgba(54,199,255,.05),transparent 25%,transparent 70%,rgba(155,92,255,.05))
}
.topbar{
  position:relative;z-index:1;
  background:linear-gradient(135deg,#0a1a2e,#102c4a 60%,#182b53);
  color:#fff;padding:22px 28px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  border-bottom:1px solid rgba(125,181,235,.18)
}
.brand{display:flex;align-items:center;gap:14px}
.wow{
  font-weight:1000;font-size:28px;letter-spacing:1px;color:#05111e;
  background:linear-gradient(135deg,var(--cyan),#8ee7ff);
  padding:9px 12px;border-radius:14px;box-shadow:0 0 24px rgba(54,199,255,.28), inset 0 -4px 0 rgba(0,0,0,.12)
}
h1{margin:0;font-size:27px;letter-spacing:.2px}
.brand p{margin:4px 0 0;color:#9eb8d1;font-weight:700}
.score-card{
  min-width:120px;text-align:center;
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:11px 15px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06)
}
.score-card span{display:block;font-size:11px;font-weight:900;letter-spacing:1.3px;color:#9fb5ce}
.score-card strong{font-size:30px;color:var(--gold);text-shadow:0 0 18px rgba(255,209,102,.18)}
#gameScreen{padding:26px 28px 32px;position:relative;z-index:1}
.progress-meta{display:flex;justify-content:space-between;font-weight:900;color:#9fb2c7;margin-bottom:9px}
.progress-track{height:11px;background:#0a1726;border:1px solid #17304b;border-radius:100px;overflow:hidden}
.progress-bar{
  height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--blue),var(--purple));
  border-radius:100px;transition:width .35s ease;box-shadow:0 0 18px rgba(54,199,255,.35)
}
.question-card{
  margin-top:22px;border:1px solid rgba(93,151,205,.23);border-radius:24px;padding:25px;
  background:linear-gradient(180deg,rgba(17,38,62,.98),rgba(11,27,45,.98));
  box-shadow:0 14px 35px rgba(0,0,0,.24), inset 0 1px 0 rgba(255,255,255,.03)
}
.question-label{
  font-size:13px;font-weight:1000;text-transform:uppercase;letter-spacing:1px;color:#7ea7cc;margin-bottom:13px
}
.prompt{
  font-size:clamp(25px,4vw,39px);font-weight:1000;line-height:1.32;color:#f5fbff;
  text-shadow:0 2px 16px rgba(0,0,0,.25)
}
.cue{
  display:inline-block;margin-top:17px;
  background:linear-gradient(180deg,rgba(255,77,109,.14),rgba(255,77,109,.08));
  border:1px solid rgba(255,77,109,.45);color:#ff8ca2;
  font-size:22px;font-weight:1000;padding:9px 17px;border-radius:100px;
  box-shadow:0 0 22px rgba(255,77,109,.08)
}
.answer-card{margin-top:19px}
.answer-label{font-weight:1000;color:#93abc2;margin:0 0 9px 4px}
.answer-input{
  width:100%;min-height:98px;border:2px solid #244969;border-radius:20px;
  background:linear-gradient(180deg,#0b1b2c,#0a1726);padding:20px 21px;
  font-size:clamp(24px,3vw,35px);font-weight:1000;line-height:1.45;color:var(--green);
  caret-color:var(--cyan);resize:none;outline:none;transition:.16s;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.015)
}
.answer-input::placeholder{color:#536a80}
.answer-input:focus{
  border-color:var(--cyan);box-shadow:0 0 0 4px rgba(54,199,255,.08),0 0 28px rgba(54,199,255,.08)
}
.answer-input.ok{
  border-color:var(--green);background:linear-gradient(180deg,#0d2c25,#0a211d);
  box-shadow:0 0 0 4px rgba(57,229,140,.07),0 0 25px rgba(57,229,140,.08)
}
.answer-input.wrong{
  border-color:var(--red);background:linear-gradient(180deg,#30131c,#221018);
  color:#ff8aa0;animation:shake .18s linear 1;
  box-shadow:0 0 0 4px rgba(255,77,109,.06),0 0 24px rgba(255,77,109,.08)
}
.feedback{height:30px;margin-top:9px;font-weight:1000;color:#6f879d}
.feedback.good{color:var(--green)}
.feedback.bad{color:#ff6a86}
.actions{display:flex;justify-content:center;gap:12px;margin-top:18px}
.secondary-btn,.primary-btn{
  border:0;border-radius:15px;font-weight:1000;cursor:pointer;transition:.16s
}
.secondary-btn{
  background:linear-gradient(180deg,#17314d,#10243a);color:#d6e8f8;padding:12px 20px;
  border:1px solid #284b6d;box-shadow:0 7px 18px rgba(0,0,0,.18)
}
.secondary-btn:hover{transform:translateY(-1px);border-color:#37668f}
.primary-btn{
  background:linear-gradient(135deg,var(--cyan),var(--blue));color:#03111f;
  padding:15px 32px;font-size:18px;box-shadow:0 10px 28px rgba(58,134,255,.24)
}
.primary-btn:hover{transform:translateY(-1px)}
.total-screen{
  text-align:center;padding:40px 24px 48px;position:relative;z-index:1;
  background:
    radial-gradient(circle at 50% 18%,rgba(255,77,109,.08),transparent 25%),
    transparent
}
.total-title{
  font-size:clamp(44px,8vw,76px);font-weight:1000;color:#ff536f;letter-spacing:4px;
  text-shadow:0 0 25px rgba(255,77,109,.16)
}
.score-circle{
  width:230px;height:230px;margin:22px auto;border-radius:50%;
  border:12px solid #ff536f;display:flex;align-items:center;justify-content:center;flex-direction:column;
  background:radial-gradient(circle at 50% 35%,#152943,#0a1726 68%);
  box-shadow:0 0 0 6px rgba(255,83,111,.08),0 18px 40px rgba(0,0,0,.32),inset 0 0 30px rgba(255,255,255,.02)
}
.final-score{font-size:68px;font-weight:1000;color:var(--cyan);line-height:1;text-shadow:0 0 22px rgba(54,199,255,.16)}
.max-score{font-size:22px;font-weight:900;color:#8198af;margin-top:6px}
.final-message{font-size:28px;font-weight:1000;margin-bottom:24px;color:#eef7ff}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;max-width:620px;margin:0 auto 28px}
.stats div{
  background:linear-gradient(180deg,#10233a,#0c1b2c);border:1px solid #1c3854;
  border-radius:18px;padding:17px;box-shadow:0 9px 22px rgba(0,0,0,.15)
}
.stats strong{display:block;font-size:31px;color:var(--cyan)}
.stats span{display:block;color:#8399ae;font-weight:900;font-size:13px;margin-top:5px}
.hidden{display:none!important}
footer{
  position:relative;z-index:1;text-align:center;padding:15px;
  background:#081522;color:#617991;font-weight:900;border-top:1px solid #14283d
}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}
@media(max-width:650px){
  body{padding:0}
  .app-shell{border:0;border-radius:0;min-height:100vh}
  .topbar{padding:16px}
  .brand p{display:none}
  h1{font-size:19px}
  .wow{font-size:20px}
  .score-card{min-width:88px;padding:8px}
  .score-card strong{font-size:24px}
  #gameScreen{padding:18px 14px 25px}
  .question-card{padding:19px}
  .answer-input{min-height:92px;padding:17px 16px}
  .stats{gap:8px}
  .stats div{padding:13px 7px}
}

/* V4 adjustments */
.question-card{position:relative}
.cue{
  display:block;
  width:max-content;
  max-width:100%;
  margin:18px 0 0 auto !important;
  text-align:right;
}

/* V5 cue styling */
.cue{
  display:block;
  width:max-content;
  max-width:100%;
  margin:18px 0 0 auto !important;
  text-align:right;
  background:none !important;
  border:none !important;
  box-shadow:none !important;
  padding:0 !important;
  border-radius:0 !important;
  color:#b1121b !important;
  font-size:23px;
  font-weight:1000;
}

/* V6 cue font size = sentence font size */
.cue{
  font-size:clamp(25px,4vw,39px) !important;
  line-height:1.32;
}

/* V7 cue color */
.cue{
  color:#69c8ff !important;
}

/* V8 teacher header */
.teacher-strip{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:11px 24px 10px;
  background:linear-gradient(90deg,#071522,#0c2034 45%,#0c2034 55%,#071522);
  border-bottom:1px solid rgba(105,200,255,.16);
  box-shadow:inset 0 -1px 0 rgba(255,255,255,.02)
}
.teacher-name{
  font-size:17px;font-weight:1000;letter-spacing:.2px;
  color:#f4f9ff;text-shadow:0 0 14px rgba(105,200,255,.08)
}
.teacher-phone{
  font-size:16px;font-weight:1000;letter-spacing:1px;
  color:#69c8ff;
  background:rgba(105,200,255,.07);
  border:1px solid rgba(105,200,255,.16);
  padding:6px 11px;border-radius:999px
}
@media(max-width:650px){
  .teacher-strip{padding:9px 14px;gap:10px}
  .teacher-name{font-size:14px}
  .teacher-phone{font-size:13px;padding:5px 9px}
}

/* V9 teacher name size */
.teacher-name{
  font-size:22px !important;
  font-weight:1000;
}
@media(max-width:650px){
  .teacher-name{font-size:18px !important}
}