* { margin:0; padding:0; box-sizing:border-box; }
html, body { width:100%; height:100%; overflow:hidden; background:#87ceeb;
  font-family:'Segoe UI', system-ui, sans-serif; touch-action:none;
  user-select:none; -webkit-user-select:none; }
canvas { display:block; }

#loading { position:fixed; inset:0; background:linear-gradient(135deg,#1a2a6c,#2a9d8f);
  display:flex; align-items:center; justify-content:center; z-index:100; transition:opacity .6s; }
#loading.done { opacity:0; pointer-events:none; }
.load-box { text-align:center; color:#fff; }
.load-title { font-size:64px; font-weight:900; letter-spacing:8px; text-shadow:0 4px 0 rgba(0,0,0,.3); }
.load-sub { font-size:18px; opacity:.85; margin:6px 0 22px; letter-spacing:3px; }
.load-bar { width:260px; height:10px; background:rgba(255,255,255,.25); border-radius:6px; margin:0 auto; overflow:hidden; }
.load-fill { height:100%; width:40%; background:#ffd166; border-radius:6px; animation:slide 1.1s ease-in-out infinite alternate; }
@keyframes slide { from { margin-left:-40%; } to { margin-left:100%; } }

#hud { position:fixed; top:0; left:0; right:0; padding:12px 16px; z-index:10; pointer-events:none;
  display:flex; align-items:flex-start; justify-content:space-between; }
#title { background:rgba(20,20,30,.5); color:#fff; padding:8px 16px 8px 10px; border-radius:12px;
  display:flex; align-items:center; gap:10px; backdrop-filter:blur(4px); }
.title-text { font-size:20px; font-weight:800; letter-spacing:1px; line-height:1; }
.title-text span { display:block; font-weight:400; font-size:11px; opacity:.75; letter-spacing:2px; margin-top:3px; }

/* Logo block ala Roblox: kubus merah + stud di atas */
.blox-logo { position:relative; width:34px; height:30px; margin-top:8px;
  background:linear-gradient(180deg,#ff4d4d 0%,#d61f1f 60%,#a31212 100%);
  border-radius:6px; box-shadow:inset 0 2px 0 rgba(255,255,255,.35), 0 3px 6px rgba(0,0,0,.4); flex:none; }
.blox-logo .stud { position:absolute; top:-9px; left:50%; transform:translateX(-50%);
  width:16px; height:10px; background:linear-gradient(180deg,#ff6b6b,#d61f1f);
  border-radius:4px 4px 2px 2px; box-shadow:inset 0 2px 0 rgba(255,255,255,.4); }
.blox-logo.big { width:64px; height:56px; margin:0 auto 14px; border-radius:12px; }
.blox-logo.big .stud { width:30px; height:18px; top:-16px; border-radius:8px 8px 4px 4px; }
#stats { background:rgba(20,20,30,.5); color:#fff; padding:8px 16px; border-radius:12px;
  font-size:15px; display:flex; align-items:center; gap:6px; }
#topRight { display:flex; gap:8px; align-items:center; pointer-events:auto; }
#clock { background:rgba(20,20,30,.5); color:#ffd166; padding:8px 14px; border-radius:12px;
  font-size:15px; font-weight:700; display:flex; align-items:center; gap:7px; letter-spacing:.5px; }
#muteBtn { background:rgba(20,20,30,.5); border:2px solid rgba(255,255,255,.25);
  border-radius:12px; padding:7px 11px; cursor:pointer; backdrop-filter:blur(4px);
  display:flex; align-items:center; }
#muteBtn:hover { border-color:#ffd166; }
#muteBtn .hidden { display:none; }
#icoOff.hidden { display:none; }
#help { position:fixed; bottom:12px; left:50%; transform:translateX(-50%);
  background:rgba(20,20,30,.65); color:#eee; padding:8px 18px; border-radius:20px;
  font-size:13px; white-space:nowrap; backdrop-filter:blur(4px); }
#help b { color:#ffd166; }

#interact { position:fixed; bottom:64px; left:50%; transform:translateX(-50%);
  background:rgba(20,20,30,.8); color:#fff; padding:10px 20px; border-radius:14px;
  font-size:15px; display:none; z-index:10; border:2px solid #ffd166; }
#interact b { color:#ffd166; }

#dialog { position:fixed; bottom:110px; left:50%; transform:translateX(-50%);
  width:min(480px, 90vw); background:rgba(15,15,25,.92); border:2px solid #ffd166;
  border-radius:16px; padding:16px 20px; z-index:20; color:#fff;
  box-shadow:0 8px 32px rgba(0,0,0,.5); cursor:pointer; }
#dialog.hidden { display:none; }
#dialogName { color:#ffd166; font-weight:800; font-size:16px; margin-bottom:6px; }
#dialogText { font-size:15px; line-height:1.55; color:#f0f0f0; }
#dialogHint { margin-top:10px; font-size:11px; opacity:.5; text-align:right; }

#stick { position:fixed; bottom:90px; left:26px; width:110px; height:110px;
  border-radius:50%; background:rgba(255,255,255,.12); border:2px solid rgba(255,255,255,.35);
  display:none; z-index:15; }
#stickKnob { position:absolute; left:50%; top:50%; width:48px; height:48px; border-radius:50%;
  background:rgba(255,255,255,.5); transform:translate(-50%,-50%); }
@media (pointer:coarse) { #stick { display:block; } #help { display:none; } #touchBtns { display:flex; } }

/* di HP/tablet: panel dialog & hint digeser ke atas tombol sentuh */
@media (pointer:coarse) {
  #dialog { bottom:182px; }
  #interact { bottom:182px; }
}

/* HUD ramping untuk HP/tablet */
@media (pointer:coarse) {
  #hud { padding:8px 10px; }
  #title { padding:6px 10px 6px 8px; gap:8px; align-items:center; }
  .title-text { font-size:18px; }
  .title-text span { display:none; } /* cukup "PLAY" saja */
  .blox-logo { width:24px; height:22px; margin-top:6px; } /* sejajar tinggi teks BLOX */
  .blox-logo .stud { width:11px; height:7px; top:-6px; }
  #topRight { gap:6px; }
  #clock { font-size:13px; padding:6px 10px; white-space:nowrap; }
  #muteBtn { padding:6px 9px; }
  #stats { font-size:13px; padding:6px 10px; }
  #stats .stats-word { display:none; } /* cukup icon + angka */
}

/* layar sangat kecil: judul loading dirampingkan */
@media (max-width:700px) {
  .load-title { font-size:44px; letter-spacing:5px; }
  .load-sub { font-size:14px; letter-spacing:2px; }
}

#touchBtns { position:fixed; bottom:90px; right:26px; display:none; gap:14px; z-index:15; }
#touchBtns button { width:68px; height:68px; border-radius:50%;
  background:rgba(255,255,255,.12); border:2px solid rgba(255,255,255,.35);
  color:#fff; font-size:10px; font-weight:700; letter-spacing:.5px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:3px;
  font-family:inherit; cursor:pointer; -webkit-tap-highlight-color:transparent;
  touch-action:manipulation; user-select:none; -webkit-user-select:none; }
#touchBtns button:active { background:rgba(255,209,102,.4); }
#tanyaBtn.pulse { border-color:#ffd166; animation:tpulse 1.2s infinite; }
@keyframes tpulse {
  0%,100% { box-shadow:0 0 0 0 rgba(255,209,102,.55); }
  50% { box-shadow:0 0 0 14px rgba(255,209,102,0); }
}
#tanyaBtn.deny { animation:tdeny .45s; border-color:#ff6b6b; }
@keyframes tdeny {
  0%,100% { transform:translateX(0); }
  25% { transform:translateX(-7px); }
  50% { transform:translateX(7px); }
  75% { transform:translateX(-4px); }
}

#toast { position:fixed; bottom:170px; left:50%; transform:translateX(-50%) translateY(10px);
  background:rgba(20,20,30,.9); color:#ffd166; padding:10px 22px; border-radius:12px;
  font-size:14px; font-weight:600; border:1px solid rgba(255,209,102,.5);
  opacity:0; pointer-events:none; transition:opacity .25s, transform .25s; z-index:30;
  white-space:nowrap; }
#toast.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* overlay debug — hanya aktif bila URL ?debug=1 */
#dbg { position:fixed; top:56px; left:8px; z-index:99; font:11px/1.5 monospace; color:#0f0;
  background:rgba(0,0,0,.72); padding:8px 10px; border-radius:8px; max-width:78vw; display:none;
  max-height:44vh; overflow:auto; white-space:pre-wrap; word-break:break-word; pointer-events:none; }
#dbg.on { display:block; }

/* ================= PLAY: tombol dialog & kartu belajar ================= */
#dialogBtns { display:flex; gap:10px; margin-top:14px; flex-wrap:wrap; }
#dialogBtns:empty { display:none; }
.dlg-btn { flex:1 1 0; min-width:110px; padding:11px 14px; border-radius:12px;
  border:2px solid rgba(255,255,255,.25); background:rgba(255,255,255,.10);
  color:#fff; font-family:inherit; font-size:14px; font-weight:700; letter-spacing:.5px;
  cursor:pointer; -webkit-tap-highlight-color:transparent; touch-action:manipulation; }
.dlg-btn:active { transform:scale(.97); }
.dlg-btn.primary { background:#2a9d8f; border-color:#2a9d8f; }
.dlg-btn.listen { background:#0984e3; border-color:#0984e3; }
.dlg-btn.speak { background:#e17055; border-color:#e17055; }
.dlg-btn.ghost { flex:0 1 auto; min-width:0; background:transparent; opacity:.75;
  font-weight:400; font-size:12px; padding:8px 10px; }

/* kartu belajar */
.en-word { font-size:26px; font-weight:900; color:#ffd166; text-align:center;
  letter-spacing:1px; margin:2px 0 8px; }
.en-big { font-size:17px; font-weight:700; color:#fff; line-height:1.5;
  background:rgba(255,255,255,.07); border-radius:10px; padding:10px 12px; }
.conv-a { margin-bottom:6px; }
.conv-b { margin-bottom:2px; }
.conv-who { display:inline-block; min-width:22px; font-weight:900; color:#00d2ff; }
.conv-b .conv-who { color:#ff9ff3; }
.pron { margin-top:8px; font-size:13.5px; color:#ffeaa7; line-height:1.5; font-style:italic; }
.trans { margin-top:6px; font-size:13px; color:#b2bec3; line-height:1.5; }
.learn-progress { font-size:12px; color:#ffd166; font-weight:700; margin-bottom:8px;
  text-align:right; letter-spacing:1px; }
.stars { font-size:30px; color:#ffd166; text-align:center; margin:8px 0 2px;
  letter-spacing:4px; text-shadow:0 2px 0 rgba(0,0,0,.4); }
.stars .off { color:rgba(255,255,255,.22); text-shadow:none; }
.feedback { text-align:center; font-size:14px; color:#55efc4; font-weight:700; margin-bottom:4px; }
.result-title { font-size:22px; font-weight:900; color:#ffd166; text-align:center; margin:4px 0 8px; }
.result-sub { text-align:center; font-size:14px; color:#dfe6e9; line-height:1.6; }

/* pemilih bahasa di HUD */
#langBtns { display:flex; background:rgba(20,20,30,.5); border-radius:12px; padding:3px; gap:3px;
  pointer-events:auto; backdrop-filter:blur(4px); }
.lang-btn { border:none; border-radius:9px; padding:6px 10px; font-family:inherit;
  font-size:13px; font-weight:800; letter-spacing:.5px; cursor:pointer;
  background:transparent; color:rgba(255,255,255,.55); }
.lang-btn.active { background:#2a9d8f; color:#fff; }
.lang-btn.soon { color:rgba(255,255,255,.30); }
@media (pointer:coarse) {
  #langBtns { padding:2px; }
  .lang-btn { font-size:12px; padding:5px 8px; }
  #dialog { max-height:62vh; overflow-y:auto; }
  .en-word { font-size:22px; }
}