@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=Nunito:wght@400;700;900&display=swap');

:root{
  --bg:#080818;--panel:#10102a;--border:#252550;
  --yellow:#FFD93D;--blue:#4FC3F7;--green:#69F0AE;
  --red:#FF5252;--purple:#CE93D8;--orange:#FFB74D;
  --white:#E8EAF6;--dim:#5C5C8A;--correct:#00E676;--wrong:#FF1744;
  --gfont:'Press Start 2P',monospace;--ufont:'Nunito',sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
body{background:var(--bg);color:var(--white);font-family:var(--ufont);
  display:flex;flex-direction:column;align-items:center;overflow-x:hidden;}

/* HEADER */
header{width:100%;padding:10px 18px;display:flex;align-items:center;
  justify-content:space-between;background:var(--panel);
  border-bottom:2px solid var(--border);flex-shrink:0;}
.logo{font-family:var(--gfont);font-size:12px;color:var(--yellow);
  text-shadow:0 0 12px #FFD93D88;}
.logo span{color:var(--blue);}

/* SCREENS */
.screen{display:none;width:100%;max-width:860px;padding:16px;}
.screen.active{display:flex;flex-direction:column;align-items:center;}

/* START SCREEN */
#start-screen{gap:22px;padding-top:30px;}
.title-main{font-family:var(--gfont);font-size:clamp(18px,4vw,30px);
  color:var(--yellow);text-shadow:0 0 24px #FFD93D55;line-height:1.6;text-align:center;}
.title-sub{font-size:14px;color:var(--blue);margin-top:4px;font-weight:700;text-align:center;}

/* animated pacman row */
.pac-demo{display:flex;align-items:center;gap:8px;margin:4px 0;}
.pac-anim{width:40px;height:40px;background:var(--yellow);border-radius:50%;
  clip-path:polygon(0% 50%,100% 0%,100% 100%);
  animation:chomp .4s steps(2) infinite;flex-shrink:0;}
@keyframes chomp{
  0%{clip-path:polygon(0% 50%,100% 0%,100% 100%);}
  50%{clip-path:polygon(0% 50%,100% 15%,100% 85%);}
  100%{clip-path:polygon(0% 50%,100% 0%,100% 100%);}
}
.pac-letters{display:flex;gap:5px;}
.pac-ltr{width:28px;height:28px;border-radius:6px;background:var(--panel);
  border:2px solid var(--border);display:flex;align-items:center;justify-content:center;
  font-family:var(--gfont);font-size:9px;animation:pop 1s ease-in-out infinite;}
.pac-ltr:nth-child(1){color:var(--blue);animation-delay:0s;}
.pac-ltr:nth-child(2){color:var(--green);animation-delay:.12s;}
.pac-ltr:nth-child(3){color:var(--purple);animation-delay:.24s;}
.pac-ltr:nth-child(4){color:var(--orange);animation-delay:.36s;}
.pac-ltr:nth-child(5){color:var(--yellow);animation-delay:.48s;}
@keyframes pop{0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}

.desc-text{font-size:13px;color:var(--dim);text-align:center;max-width:400px;line-height:1.7;}

/* category grid */
.section-label{font-family:var(--gfont);font-size:8px;color:var(--blue);
  letter-spacing:1px;margin-bottom:2px;}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));
  gap:10px;width:100%;max-width:480px;}
.cat-btn{padding:12px 8px;border:2px solid var(--border);border-radius:10px;
  background:var(--panel);color:var(--white);font-family:var(--ufont);
  font-size:12px;font-weight:700;cursor:pointer;text-align:center;transition:all .2s;}
.cat-btn:hover{transform:translateY(-3px);border-color:var(--dim);}
.cat-btn.selected{border-color:var(--yellow);box-shadow:0 0 14px #FFD93D44;background:#1c1c38;}
.cat-icon{font-size:20px;display:block;margin-bottom:4px;}
.cat-btn.all{border-color:var(--blue);color:var(--blue);}
.cat-btn.all.selected{box-shadow:0 0 14px #4FC3F744;}

/* level cards */
.levels-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:10px;width:100%;max-width:580px;}
.lv-card{background:var(--panel);border:2px solid var(--border);border-radius:10px;padding:12px;}
.lv-card h3{font-family:var(--gfont);font-size:8px;margin-bottom:5px;}
.lv-card p{font-size:11px;color:var(--dim);line-height:1.5;}
.lv-card.lv1 h3{color:var(--green);}
.lv-card.lv2 h3{color:var(--yellow);}
.lv-card.lv3 h3{color:var(--orange);}
.lv-card.lv4 h3{color:var(--red);}

.start-btn{font-family:var(--gfont);font-size:12px;padding:14px 32px;
  background:var(--yellow);color:#000;border:none;border-radius:10px;
  cursor:pointer;letter-spacing:1px;transition:all .2s;
  box-shadow:0 4px 18px #FFD93D44;}
.start-btn:hover{transform:scale(1.06);box-shadow:0 4px 26px #FFD93D88;}
.start-btn:disabled{opacity:.35;cursor:not-allowed;transform:none;}

/* GAME SCREEN */
#game-screen{gap:10px;padding:10px;}

.hud{display:flex;align-items:center;justify-content:space-between;
  width:100%;max-width:800px;background:var(--panel);border-radius:10px;
  padding:8px 14px;border:1px solid var(--border);flex-wrap:wrap;gap:6px;}
.hud-item{text-align:center;}
.hud-lbl{font-size:7px;color:var(--dim);font-family:var(--gfont);letter-spacing:.5px;}
.hud-val{font-family:var(--gfont);font-size:13px;color:var(--yellow);
  text-shadow:0 0 8px #FFD93D55;}
.hud-val.blue{color:var(--blue);}
.hud-val.green{color:var(--green);}
.lives-row{display:flex;gap:4px;align-items:center;}
.life{width:14px;height:14px;background:var(--yellow);border-radius:50%;
  clip-path:polygon(0% 50%,100% 0%,100% 100%);opacity:.2;transition:opacity .3s;}
.life.on{opacity:1;}

/* timer bar */
.timer-bar-wrap{width:100%;max-width:800px;height:5px;
  background:var(--border);border-radius:3px;overflow:hidden;}
.timer-bar{height:100%;background:var(--orange);border-radius:3px;
  transition:width .95s linear,background .3s;}

/* question box */
.q-box{width:100%;max-width:800px;background:var(--panel);
  border:2px solid var(--border);border-radius:12px;padding:14px 18px;text-align:center;}
.q-badge{display:inline-block;padding:2px 10px;border-radius:20px;
  font-size:8px;font-family:var(--gfont);margin-bottom:6px;}
.q-badge.lv1{background:#00E67618;color:var(--green);border:1px solid var(--green);}
.q-badge.lv2{background:#FFD93D18;color:var(--yellow);border:1px solid var(--yellow);}
.q-badge.lv3{background:#FFB74D18;color:var(--orange);border:1px solid var(--orange);}
.q-badge.lv4{background:#FF525218;color:var(--red);border:1px solid var(--red);}
.q-text{font-size:clamp(12px,2.5vw,15px);font-weight:700;color:var(--white);
  line-height:1.5;margin-bottom:3px;}
.q-hint{font-size:12px;color:var(--dim);}
.q-word-prog{margin-top:12px;display:flex;justify-content:center;gap:6px;}
.qw-ltr{font-family:var(--gfont);font-size:14px;color:#3a3a6a;border-bottom:3px solid #3a3a6a;padding:0 2px 4px;transition:all 0.3s;}
.qw-ltr.done{color:var(--correct);border-color:var(--correct);text-shadow:0 0 10px rgba(0,230,118,0.5);}

/* canvas */
.canvas-wrap{position:relative;width:100%;max-width:800px;
  background:#050510;border:2px solid var(--border);border-radius:12px;overflow:hidden;}
#gc{display:block;width:100%;touch-action:none;}

/* overlay */
.ov{position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:10px;
  background:rgba(5,5,20,.88);backdrop-filter:blur(5px);
  font-family:var(--gfont);font-size:10px;text-align:center;padding:20px;
  transition:opacity .2s;}
.ov.hide{display:none;}
.ov h2{font-size:clamp(13px,3vw,19px);margin-bottom:2px;}
.ov .ov-word{color:var(--blue);font-size:clamp(14px,4vw,24px);
  letter-spacing:4px;word-break:break-all;}
.ov p{color:var(--dim);font-size:9px;line-height:1.7;white-space:pre-line;}
.ov-btns{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:6px;}
.ov-btn{font-family:var(--gfont);font-size:9px;padding:9px 20px;border-radius:8px;
  border:none;cursor:pointer;transition:all .2s;}
.ov-btn.pri{background:var(--yellow);color:#000;}
.ov-btn.sec{background:var(--panel);color:var(--white);border:1px solid var(--border);}
.ov-btn:hover{transform:scale(1.06);}

/* countdown overlay */
.countdown-ov{position:absolute;inset:0;display:flex;align-items:center;
  justify-content:center;background:rgba(5,5,20,.75);font-family:var(--gfont);}
.countdown-ov.hide{display:none;}
.countdown-num{font-size:80px;color:var(--yellow);
  text-shadow:0 0 40px #FFD93Daa;animation:cdbig .9s ease-out forwards;}
@keyframes cdbig{
  0%{transform:scale(2);opacity:0;}
  40%{transform:scale(1);opacity:1;}
  80%{transform:scale(.9);opacity:1;}
  100%{transform:scale(.85);opacity:0;}
}

/* mobile d-pad */
.dpad{display:none;grid-template-columns:repeat(3,48px);
  grid-template-rows:repeat(3,48px);gap:4px;margin-top:4px;}
@media(hover:none){.dpad{display:grid;}}
.dp-btn{background:var(--panel);border:2px solid var(--border);border-radius:10px;
  color:var(--white);font-size:18px;display:flex;align-items:center;
  justify-content:center;cursor:pointer;user-select:none;-webkit-user-select:none;
  transition:background .1s;}
.dp-btn:active{background:#2a2a50;}
.dp-center{grid-column:2;grid-row:2;background:transparent;border-color:transparent;
  font-size:10px;color:var(--dim);}

/* controls hint */
.ctrl-row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;
  font-size:10px;color:var(--dim);}
.key{display:inline-block;padding:2px 6px;background:var(--panel);
  border:1px solid var(--border);border-radius:4px;
  font-family:var(--gfont);font-size:8px;color:var(--white);}

/* RESULT SCREEN */
#result-screen{gap:22px;padding-top:36px;text-align:center;}
.res-title{font-family:var(--gfont);font-size:clamp(14px,3vw,20px);
  color:var(--yellow);text-shadow:0 0 20px #FFD93D55;}
.res-stars{font-size:32px;letter-spacing:4px;}
.res-stats{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;}
.stat-card{background:var(--panel);border:2px solid var(--border);
  border-radius:12px;padding:14px 22px;min-width:110px;}
.stat-card .num{font-family:var(--gfont);font-size:22px;color:var(--yellow);}
.stat-card .lbl{font-size:10px;color:var(--dim);margin-top:3px;}
.vocab-list{width:100%;max-width:580px;max-height:240px;overflow-y:auto;
  display:flex;flex-direction:column;gap:7px;}
.v-row{display:flex;align-items:center;gap:10px;background:var(--panel);
  border-radius:9px;padding:9px 13px;border:1px solid var(--border);font-size:13px;}
.v-row .en{color:var(--blue);font-weight:700;flex:1;}
.v-row .id{color:var(--dim);flex:1;}
.v-row .st{font-size:15px;}
::-webkit-scrollbar{width:4px;}
::-webkit-scrollbar-track{background:var(--panel);}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px;}

/* flash */
.flash-ok{animation:fok .5s;}
.flash-no{animation:fno .5s;}
@keyframes fok{0%,100%{box-shadow:none;border-color:var(--border);}
  50%{box-shadow:0 0 30px var(--correct);border-color:var(--correct);}}
@keyframes fno{0%,100%{box-shadow:none;border-color:var(--border);}
  50%{box-shadow:0 0 30px var(--wrong);border-color:var(--wrong);}}