/* ═══════════════════════════════════════════════════════
   Code Quest — Neon Gaming Theme
   ═══════════════════════════════════════════════════════ */

*{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#070b14;
  --surface:rgba(12,18,32,.88);
  --surface2:rgba(18,28,50,.75);
  --border:rgba(0,200,255,.2);
  --neon:#00d4ff;
  --neon-glow:0 0 12px rgba(0,212,255,.5),0 0 30px rgba(0,212,255,.18);
  --magenta:#ff00ff;
  --magenta-glow:0 0 12px rgba(255,0,255,.45);
  --green:#00ff88;
  --green-glow:0 0 12px rgba(0,255,136,.45);
  --orange:#ffaa00;
  --orange-glow:0 0 12px rgba(255,170,0,.45);
  --red:#ff4466;
  --red-glow:0 0 12px rgba(255,68,102,.45);
  --gold:#ffd700;
  --gold-glow:0 0 18px rgba(255,215,0,.5);
  --text:#e4e8f1;
  --text-dim:#8892a8;
  --radius:16px;
  --radius-sm:10px;
  --font-display:'Orbitron',sans-serif;
  --font-mono:'Share Tech Mono',monospace;
  --font-body:'Exo 2',system-ui,sans-serif;
}

html,body{height:100%;overflow-x:hidden}

body{
  font-family:var(--font-body);
  color:var(--text);
  background:var(--bg);
  background-image:
    radial-gradient(ellipse 120% 80% at 50% 0%,rgba(0,60,120,.18),transparent),
    radial-gradient(ellipse 80% 60% at 80% 100%,rgba(80,0,120,.12),transparent);
}

#particles{
  position:fixed;inset:0;z-index:0;pointer-events:none;
}

#app{
  position:relative;z-index:1;
  min-height:100vh;display:flex;flex-direction:column;align-items:center;
  padding:1.5rem 1rem 3rem;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--neon);border-radius:3px}

/* ─── Common ─── */
.screen{
  width:100%;max-width:860px;
  animation:fadeUp .5s ease both;
}

.hidden{display:none!important}

/* ─── Buttons ─── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 2.2rem;
  font-family:var(--font-display);font-size:.95rem;font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;
  border:2px solid var(--neon);
  border-radius:50px;
  background:transparent;color:var(--neon);
  cursor:pointer;
  transition:all .25s ease;
  box-shadow:var(--neon-glow);
  text-decoration:none;
}
.btn:hover{
  background:var(--neon);color:#070b14;
  box-shadow:0 0 24px rgba(0,212,255,.6),0 0 60px rgba(0,212,255,.2);
  transform:translateY(-2px);
}
.btn:active{transform:translateY(0) scale(.97)}

.btn--green{border-color:var(--green);color:var(--green);box-shadow:var(--green-glow)}
.btn--green:hover{background:var(--green);color:#070b14;box-shadow:0 0 24px rgba(0,255,136,.6)}
.btn--magenta{border-color:var(--magenta);color:var(--magenta);box-shadow:var(--magenta-glow)}
.btn--magenta:hover{background:var(--magenta);color:#070b14;box-shadow:0 0 24px rgba(255,0,255,.6)}
.btn--gold{border-color:var(--gold);color:var(--gold);box-shadow:var(--gold-glow)}
.btn--gold:hover{background:var(--gold);color:#070b14;box-shadow:0 0 24px rgba(255,215,0,.6)}
.btn--sm{padding:.55rem 1.4rem;font-size:.8rem}

/* ─── Welcome Screen ─── */
.welcome{text-align:center;padding-top:6vh}

.welcome__logo{
  font-size:3rem;margin-bottom:.5rem;
  animation:float 3s ease-in-out infinite;
}

.welcome__title{
  font-family:var(--font-display);
  font-size:clamp(1.6rem,5vw,2.8rem);
  font-weight:900;
  background:linear-gradient(135deg,var(--neon),var(--magenta));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
  line-height:1.15;margin:.4rem 0;
  text-shadow:none;
  filter:drop-shadow(0 0 20px rgba(0,212,255,.3));
}

.welcome__subtitle{
  font-family:var(--font-mono);
  font-size:clamp(.85rem,2.5vw,1.1rem);
  color:var(--text-dim);margin:0 0 1.5rem;
  line-height:1.5;
}

.welcome__story{
  max-width:560px;margin:0 auto 2rem;
  padding:1.4rem 1.6rem;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  font-size:.95rem;line-height:1.65;
  color:var(--text-dim);
  backdrop-filter:blur(12px);
}
.welcome__story strong{color:var(--neon)}

.welcome__badges{
  display:flex;flex-wrap:wrap;justify-content:center;gap:.6rem;
  margin:0 auto 2rem;max-width:520px;
}
.welcome__badge{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.4rem .9rem;
  font-size:.78rem;font-weight:600;
  border-radius:50px;
  border:1px solid var(--border);
  background:var(--surface2);
  color:var(--text-dim);
  transition:all .3s ease;
}
.welcome__badge:hover{
  border-color:var(--neon);color:var(--neon);
  box-shadow:var(--neon-glow);transform:translateY(-2px);
}

/* ─── Mission Header ─── */
.mission-header{
  text-align:center;margin-bottom:1.5rem;
}

.mission-header__level{
  font-family:var(--font-mono);font-size:.8rem;
  color:var(--neon);letter-spacing:.12em;text-transform:uppercase;
  margin-bottom:.3rem;
}

.mission-header__title{
  font-family:var(--font-display);
  font-size:clamp(1.3rem,4vw,2rem);
  font-weight:700;color:#fff;
  margin:.2rem 0 .8rem;
}

.progress-bar{
  width:100%;max-width:400px;height:8px;margin:0 auto;
  background:rgba(255,255,255,.06);
  border-radius:4px;overflow:hidden;
}
.progress-bar__fill{
  height:100%;border-radius:4px;
  background:linear-gradient(90deg,var(--neon),var(--magenta));
  transition:width .5s ease;
  box-shadow:0 0 10px rgba(0,212,255,.5);
}

/* ─── Task Card ─── */
.task-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:2rem;
  margin-bottom:1.5rem;
  backdrop-filter:blur(12px);
  position:relative;
  overflow:hidden;
}
.task-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--neon),var(--magenta),var(--green));
}

.task-card__label{
  font-family:var(--font-mono);font-size:.72rem;
  color:var(--neon);letter-spacing:.15em;text-transform:uppercase;
  margin-bottom:1rem;
  display:flex;align-items:center;gap:.5rem;
}

.code-block{
  font-family:var(--font-mono);
  font-size:1.05rem;line-height:1.7;
  background:rgba(0,0,0,.4);
  border:1px solid rgba(0,212,255,.12);
  border-radius:var(--radius-sm);
  padding:1rem 1.4rem;
  margin:1rem 0;
  color:#b8f0ff;
  position:relative;
  white-space:pre-wrap;
  word-break:break-word;
}
.code-block .keyword{color:var(--magenta)}
.code-block .number{color:var(--orange)}
.code-block .string{color:var(--green)}
.code-block .blank{
  display:inline-block;min-width:80px;
  border-bottom:2px dashed var(--neon);
  color:var(--neon);text-align:center;
  margin:0 .2rem;
}
.code-block .bug-line{color:var(--red);text-decoration:line-through;opacity:.5}
.code-block .bug-highlight{
  background:rgba(255,68,102,.15);
  border:1px solid var(--red);
  border-radius:4px;padding:0 .3rem;
}

.task-card__question{
  font-size:1.15rem;font-weight:600;
  margin:1.2rem 0 1rem;
  color:#fff;
}

.task-card__scenario{
  font-size:2.2rem;
  text-align:center;
  margin:1rem 0;
  letter-spacing:.3em;
  line-height:1.6;
}

/* ─── Options ─── */
.options{display:flex;flex-direction:column;gap:.6rem}

.option-btn{
  display:flex;align-items:center;gap:.9rem;
  width:100%;
  padding:.9rem 1.2rem;
  background:var(--surface2);
  border:1.5px solid rgba(255,255,255,.08);
  border-radius:var(--radius-sm);
  color:var(--text);
  font-family:var(--font-body);font-size:1rem;
  cursor:pointer;
  transition:all .2s ease;
  text-align:left;
}
.option-btn:hover{
  border-color:var(--neon);
  background:rgba(0,212,255,.06);
  transform:translateX(4px);
}
.option-btn.selected{
  border-color:var(--neon);
  background:rgba(0,212,255,.1);
  box-shadow:var(--neon-glow);
}
.option-btn.correct{
  border-color:var(--green)!important;
  background:rgba(0,255,136,.12)!important;
  box-shadow:var(--green-glow)!important;
}
.option-btn.wrong{
  border-color:var(--red)!important;
  background:rgba(255,68,102,.1)!important;
  box-shadow:var(--red-glow)!important;
}
.option-btn.disabled{pointer-events:none;opacity:.5}

.option-btn__marker{
  flex-shrink:0;
  width:32px;height:32px;
  display:flex;align-items:center;justify-content:center;
  border-radius:8px;
  background:rgba(255,255,255,.05);
  border:1.5px solid rgba(255,255,255,.1);
  font-family:var(--font-display);font-size:.8rem;font-weight:700;
  color:var(--text-dim);
  transition:all .2s ease;
}
.option-btn.selected .option-btn__marker{
  border-color:var(--neon);color:var(--neon);
}
.option-btn.correct .option-btn__marker{
  border-color:var(--green);color:var(--green);
  background:rgba(0,255,136,.15);
}
.option-btn.wrong .option-btn__marker{
  border-color:var(--red);color:var(--red);
  background:rgba(255,68,102,.15);
}

/* ─── Show Answer / Answer Area ─── */
.answer-area{
  text-align:center;
  margin-top:1.5rem;
}

.show-answer-btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:1rem 2.5rem;
  font-family:var(--font-display);font-size:1rem;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;
  border:none;border-radius:50px;
  background:linear-gradient(135deg,var(--neon),#0088cc);
  color:#fff;cursor:pointer;
  box-shadow:0 0 20px rgba(0,212,255,.4);
  transition:all .25s ease;
}
.show-answer-btn:hover{
  transform:translateY(-2px) scale(1.03);
  box-shadow:0 0 30px rgba(0,212,255,.6),0 0 60px rgba(0,212,255,.2);
}
.show-answer-btn:active{transform:scale(.97)}

.answer-reveal{
  animation:scaleIn .4s ease both;
  padding:1.2rem 1.5rem;
  background:rgba(0,255,136,.08);
  border:1.5px solid var(--green);
  border-radius:var(--radius-sm);
  margin-top:1rem;
}
.answer-reveal__label{
  font-family:var(--font-mono);font-size:.7rem;
  color:var(--green);letter-spacing:.15em;text-transform:uppercase;
  margin-bottom:.4rem;
}
.answer-reveal__text{
  font-size:1.2rem;font-weight:700;color:var(--green);
}

/* ─── Next Mission Button ─── */
.next-area{
  text-align:center;margin-top:1.5rem;
  animation:fadeUp .4s ease .2s both;
}

/* ─── Mission Complete Overlay ─── */
.overlay{
  position:fixed;inset:0;z-index:100;
  display:flex;align-items:center;justify-content:center;
  background:rgba(7,11,20,.92);
  backdrop-filter:blur(8px);
  animation:fadeIn .3s ease;
}
.overlay__card{
  background:var(--surface);
  border:2px solid var(--border);
  border-radius:var(--radius);
  padding:3rem 2.5rem;
  max-width:420px;width:90%;
  text-align:center;
  animation:scaleIn .5s cubic-bezier(.34,1.56,.64,1) both;
}
.overlay__emoji{font-size:4rem;margin-bottom:.5rem;animation:float 2s ease-in-out infinite}
.overlay__title{
  font-family:var(--font-display);
  font-size:1.5rem;font-weight:700;
  color:#fff;margin:.3rem 0 .8rem;
}
.overlay__badge{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.6rem 1.5rem;
  border-radius:50px;
  font-family:var(--font-display);font-size:.85rem;font-weight:700;
  letter-spacing:.08em;
  margin:1rem 0;
  animation:glow 2s ease-in-out infinite;
}
.overlay__badge--cyan{
  border:2px solid var(--neon);color:var(--neon);
  background:rgba(0,212,255,.08);
  box-shadow:var(--neon-glow);
}
.overlay__badge--magenta{
  border:2px solid var(--magenta);color:var(--magenta);
  background:rgba(255,0,255,.08);
  box-shadow:var(--magenta-glow);
}
.overlay__badge--green{
  border:2px solid var(--green);color:var(--green);
  background:rgba(0,255,136,.08);
  box-shadow:var(--green-glow);
}
.overlay__badge--gold{
  border:2px solid var(--gold);color:var(--gold);
  background:rgba(255,215,0,.08);
  box-shadow:var(--gold-glow);
}
.overlay__xp{
  font-family:var(--font-mono);font-size:.85rem;
  color:var(--orange);margin:.5rem 0;
}
.overlay__buttons{margin-top:1.5rem;display:flex;flex-direction:column;gap:.6rem;align-items:center}

/* ─── Bonus Round ─── */
.bonus-screen{text-align:center}
.bonus-screen__timer{
  font-family:var(--font-display);
  font-size:3rem;font-weight:900;
  margin:.5rem 0;
}
.bonus-screen__timer--urgent{color:var(--red);animation:pulse .5s ease infinite}
.bonus-screen__timer--ok{color:var(--green)}

.speed-options{
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:.6rem;
  margin:1rem 0;
}
@media(max-width:500px){.speed-options{grid-template-columns:1fr}}

/* ─── Stats Bar ─── */
.stats-bar{
  display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;
  margin:1rem 0;
}
.stat{
  display:flex;align-items:center;gap:.4rem;
  font-family:var(--font-mono);font-size:.8rem;
  color:var(--text-dim);
  padding:.35rem .8rem;
  background:var(--surface2);
  border:1px solid var(--border);
  border-radius:50px;
}
.stat__val{font-weight:700;color:var(--neon)}

/* ─── Combo ─── */
.combo{
  position:fixed;top:1rem;right:1rem;z-index:50;
  padding:.5rem 1rem;
  font-family:var(--font-display);font-size:.85rem;font-weight:700;
  color:var(--orange);
  background:rgba(255,170,0,.1);
  border:2px solid var(--orange);
  border-radius:50px;
  box-shadow:var(--orange-glow);
  animation:comboIn .4s cubic-bezier(.34,1.56,.64,1) both;
}
.combo.hidden{display:none}

/* ─── XP Popup ─── */
.xp-popup{
  position:fixed;
  font-family:var(--font-display);font-size:1.2rem;font-weight:700;
  color:var(--green);
  pointer-events:none;z-index:60;
  animation:xpFly 1.2s ease both;
}

/* ─── Final Screen ─── */
.final{text-align:center;padding-top:4vh}
.final__medal{font-size:6rem;animation:float 3s ease-in-out infinite}
.final__congrats{
  font-family:var(--font-display);
  font-size:clamp(1.8rem,5vw,3rem);font-weight:900;
  background:linear-gradient(135deg,var(--gold),var(--orange));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
  margin:.5rem 0;
}
.final__rank{
  font-family:var(--font-display);
  font-size:clamp(1.1rem,3vw,1.6rem);font-weight:700;
  color:var(--gold);
  margin:.5rem 0 1.5rem;
  text-shadow:0 0 20px rgba(255,215,0,.4);
}
.final__stats{
  display:flex;flex-wrap:wrap;justify-content:center;gap:1.2rem;
  margin:1.5rem 0 2rem;
}
.final__stat{
  padding:1rem 1.5rem;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  min-width:130px;
}
.final__stat-icon{font-size:1.6rem}
.final__stat-val{
  font-family:var(--font-display);font-size:1.5rem;font-weight:700;
  color:var(--neon);margin:.3rem 0;
}
.final__stat-label{
  font-size:.75rem;color:var(--text-dim);
  text-transform:uppercase;letter-spacing:.1em;
}

.final__badges{
  display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;
  margin:1rem 0 2rem;
}

/* ─── Grid Scene (for robot missions) ─── */
.robot-grid{
  display:flex;justify-content:center;align-items:center;
  gap:.5rem;margin:1rem 0;
  font-size:2.2rem;
  letter-spacing:.15em;
  flex-wrap:wrap;
}
.robot-grid__cell{
  width:60px;height:60px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);
  border-radius:8px;
}

/* ─── Shape Preview ─── */
.shape-preview{
  width:120px;height:120px;margin:1rem auto;
  border:2px solid var(--neon);
  border-radius:4px;
}

/* ─── Animations ─── */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(24px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes fadeIn{
  from{opacity:0}to{opacity:1}
}
@keyframes scaleIn{
  from{opacity:0;transform:scale(.85)}
  to{opacity:1;transform:scale(1)}
}
@keyframes float{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}
@keyframes glow{
  0%,100%{filter:brightness(1)}
  50%{filter:brightness(1.3)}
}
@keyframes pulse{
  0%,100%{transform:scale(1)}
  50%{transform:scale(1.05)}
}
@keyframes comboIn{
  from{opacity:0;transform:scale(.5) rotate(-10deg)}
  to{opacity:1;transform:scale(1) rotate(0)}
}
@keyframes xpFly{
  0%{opacity:1;transform:translateY(0) scale(1)}
  100%{opacity:0;transform:translateY(-60px) scale(1.3)}
}
@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-6px)}
  40%{transform:translateX(6px)}
  60%{transform:translateX(-4px)}
  80%{transform:translateX(4px)}
}
@keyframes bugBreak{
  0%{opacity:1;transform:translateX(0) rotate(0)}
  30%{transform:translateX(8px) rotate(3deg)}
  60%{transform:translateX(-5px) rotate(-2deg);opacity:.5}
  100%{opacity:0;transform:translateY(20px) rotate(15deg) scale(.5)}
}

.bug-broken{
  border-color:var(--red)!important;
  color:var(--red)!important;
  background:rgba(255,68,102,.15)!important;
  animation:bugBreak .7s ease .3s both;
  pointer-events:none;
}
@keyframes confettiBurst{
  0%{opacity:1;transform:translateY(0) rotate(0) scale(1)}
  100%{opacity:0;transform:translateY(-120px) rotate(720deg) scale(0)}
}
@keyframes borderGlow{
  0%,100%{border-color:var(--neon);box-shadow:var(--neon-glow)}
  33%{border-color:var(--magenta);box-shadow:var(--magenta-glow)}
  66%{border-color:var(--green);box-shadow:var(--green-glow)}
}

.shake{animation:shake .4s ease}

/* ─── Confetti Container ─── */
.confetti-container{
  position:fixed;inset:0;pointer-events:none;z-index:200;
}
.confetti-piece{
  position:absolute;
  width:10px;height:10px;
  border-radius:2px;
  animation:confettiBurst 1.5s ease both;
}

/* ─── Responsive ─── */
@media(max-width:600px){
  .task-card{padding:1.2rem}
  .code-block{font-size:.9rem;padding:.8rem 1rem}
  .option-btn{padding:.7rem 1rem;font-size:.9rem}
  .overlay__card{padding:2rem 1.5rem}
  .welcome__title{font-size:1.5rem}
  .robot-grid__cell{width:48px;height:48px;font-size:1.6rem}
}

/* ─── Tooltip for code hover ─── */
.code-block .highlight{
  background:rgba(0,212,255,.15);
  border-bottom:1px solid var(--neon);
}

/* ─── Mission complete particles burst ─── */
.mission-complete-bg{
  position:fixed;inset:0;z-index:99;
  display:flex;align-items:center;justify-content:center;
  background:rgba(7,11,20,.85);
  animation:fadeIn .3s ease;
}

/* ─── Lucky question indicator ─── */
.lucky-indicator{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.3rem .8rem;
  border-radius:50px;
  background:rgba(255,170,0,.1);
  border:1px solid var(--orange);
  font-family:var(--font-mono);font-size:.7rem;
  color:var(--orange);
  margin-bottom:.8rem;
}

/* ─── Speed round indicators ─── */
.speed-indicator{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.3rem .8rem;
  border-radius:50px;
  background:rgba(255,0,255,.1);
  border:1px solid var(--magenta);
  font-family:var(--font-mono);font-size:.7rem;
  color:var(--magenta);
  margin-bottom:.8rem;
}