:root {
  --ink: #eef5ee;
  --ink-soft: #a8b8a8;
  --green: #2ecc66;
  --green-deep: #1ea54c;
  --blue: #3d82e0;
  --yellow: #f2c200;
  --brown: #b0815a;
  --red: #ff6b5b;
  --ring-track: #2a3a30;
  --surface: rgba(24, 32, 26, 0.80);
}

* { box-sizing: border-box; }
html, body { margin:0; min-height:100vh; }

body {
  position:relative;
  background:
    radial-gradient(circle at 8% 15%, rgba(30,165,76,0.35), transparent 42%),
    radial-gradient(circle at 92% 8%, rgba(227,167,0,0.25), transparent 40%),
    radial-gradient(circle at 95% 90%, rgba(30,100,200,0.30), transparent 45%),
    radial-gradient(circle at 5% 95%, rgba(20,128,58,0.30), transparent 40%),
    linear-gradient(150deg, #0e1812 0%, #14201a 50%, #101a22 100%);
  background-attachment:fixed;
  display:flex; justify-content:center; align-items:center;
  font-family:'Inter', sans-serif;
  color:var(--ink);
  padding:20px;
}

h1, h2 { font-family:'Fraunces', serif; margin:0; color:var(--ink); }

.theme-toggle {
  width:48px;
  height:48px;
  border-radius:50%;
  background:var(--surface);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,0.15);
  font-size:20px;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:0;
  box-shadow:0 6px 16px rgba(0,0,0,0.3);
}

.screen {
  display:none;
  text-align:center;
  width:100%;
  max-width:480px;
  background:var(--surface);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:24px;
  padding:40px 32px;
  box-shadow:0 20px 60px rgba(0,0,0,0.45);
  position:relative;
  z-index:1;
}
.screen.active { display:block; animation:rise .35s ease; }

@keyframes rise {
  from { opacity:0; transform:translateY(8px); }
  to { opacity:1; transform:translateY(0); }
}

/* --- Menu --- */
.brandmark { font-size:44px; margin-bottom:8px; }
#menu h1 { font-size:36px; font-weight:700; letter-spacing:-0.01em; }
.plus { color:var(--green); }
.subtitle { color:var(--ink-soft); font-size:16px; margin:10px 0 28px; }

/* --- Buttons --- */
button {
  font-family:'Inter', sans-serif;
  font-size:16px; font-weight:600;
  border:none; border-radius:12px;
  padding:14px 22px;
  cursor:pointer;
  transition:transform .15s ease, filter .15s ease;
}
button:active { transform:scale(0.97); }

.btn-primary { background:var(--green); color:#ffffff; }
.btn-primary:hover { background:var(--green-deep); }

.btn-secondary { background:rgba(255,255,255,0.08); color:var(--ink); }
.btn-secondary:hover { background:rgba(255,255,255,0.14); }

.btn-text {
  background:none; color:var(--ink-soft);
  padding:10px 0; font-weight:500; font-size:14px;
  text-decoration:underline; text-underline-offset:3px;
}
.btn-text:hover { color:var(--ink); }
.btn-danger { color:var(--red); }

.menuBotoes { display:flex; gap:10px; margin-top:8px; }
.menuBotoes button { flex:1; }

/* --- HUD --- */
.hud {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:28px;
}
.hud-item { display:flex; flex-direction:column; gap:2px; min-width:64px; }
.hud-label {
  font-size:11px; text-transform:uppercase; letter-spacing:.06em;
  color:var(--ink-soft); font-weight:600;
}
.hud-value { font-size:20px; font-weight:700; color:var(--ink); }

.timer-ring { position:relative; width:64px; height:64px; cursor:pointer; }
.timer-ring svg { width:64px; height:64px; transform:rotate(-90deg); }
.ring-bg { fill:none; stroke:var(--ring-track); stroke-width:6; }
.ring-fg {
  fill:none; stroke:var(--green); stroke-width:6; stroke-linecap:round;
  stroke-dasharray:175.9; stroke-dashoffset:0;
  transition:stroke-dashoffset 1s linear, stroke .3s ease;
}
.timer-text {
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-size:18px; font-weight:700; color:var(--ink);
}
.timer-pause {
  position:absolute; inset:0;
  display:none;
  align-items:center; justify-content:center;
  background:rgba(0,0,0,0.55);
  border-radius:50%;
  color:#fff;
  font-size:18px;
  border:none;
  padding:0;
}
.timer-ring:hover .timer-pause { display:flex; }
.timer-ring:hover .timer-text { opacity:0; }

#residuoArea {
  display:flex; flex-direction:column; align-items:center; gap:10px;
  margin-bottom:28px;
}
#residuo {
  width:96px; height:96px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:20px;
  display:flex; align-items:center; justify-content:center;
  font-size:42px;
  cursor:grab;
  user-select:none;
  box-shadow:0 6px 16px rgba(0,0,0,0.35);
  transition:transform .12s ease;
  touch-action:none;
}
#residuo:active { cursor:grabbing; transform:scale(1.05); }
#residuo.dragging { opacity:0.85; }

#residuoNome {
  font-size:14px; font-weight:600; color:var(--ink-soft);
  text-transform:uppercase; letter-spacing:.05em;
}

/* --- Ecopontos --- */
#ecopontos { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.ecoponto {
  display:flex; flex-direction:column; align-items:center; gap:6px;
  padding:18px 8px;
  border-radius:16px;
  color:#fff; font-weight:600; font-size:13px;
}
.eco-icon { font-size:26px; }
.eco-papel    { background:var(--blue); }
.eco-plastico { background:var(--yellow); color:#1c2620; }
.eco-vidro    { background:var(--green); color:#08120a; }
.eco-organico { background:var(--brown); }

.ecoponto.dragover {
  transform:scale(1.04);
  box-shadow:0 0 0 3px rgba(255,255,255,0.5) inset;
}

#feedback {
  margin-top:20px; min-height:24px;
  font-size:15px; font-weight:600;
}
.correto { color:var(--green); }
.incorreto { color:var(--red); }

/* --- Ecrã final --- */
.result-icon { font-size:40px; margin-bottom:4px; }
.result-score { margin:6px 0 26px; }
.result-score #pontosFinal,
.result-score #certasFinalQuiz,
.result-score #erradasFinalQuiz {
  font-family: 'Fraunces', serif; font-size: 48px; font-weight: 700;
  color:var(--green);
}
.result-label { font-size:14px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:.05em; margin-left:6px; }

#listaRanking {
  text-align:center; max-width:320px; margin:20px auto 28px;
  font-size:15px; list-style:none; padding:0;
}
#listaRanking li {
  padding:10px 14px; margin-bottom:6px;
  background:rgba(255,255,255,0.05);
  border-radius:10px;
}

#listaInstrucoes {
  text-align:left; max-width:340px; margin:20px auto 28px;
  font-size:15px; list-style:none; padding:0;
}
#listaInstrucoes li {
  padding:10px 14px; margin-bottom:8px;
  background:rgba(255,255,255,0.05);
  border-radius:10px;
}

#autores {
  border:1px solid rgba(46,204,102,0.35);
  box-shadow:0 20px 60px rgba(0,0,0,0.45), 0 0 40px rgba(46,204,102,0.15);
}
#listaAutores {
  text-align:center; max-width:320px; margin:20px auto 28px;
  font-size:15px; list-style:none; padding:0;
}
#listaAutores li {
  padding:10px 14px; margin-bottom:6px;
  background:rgba(46,204,102,0.12);
  border:1px solid rgba(46,204,102,0.25);
  border-radius:10px;
  color:#ffffff;
  font-weight:600;
}

/* --- Modo Claro --- */
body.tema-claro {
  background:
    radial-gradient(circle at 8% 15%, rgba(30,165,76,0.30), transparent 42%),
    radial-gradient(circle at 92% 8%, rgba(227,167,0,0.25), transparent 40%),
    radial-gradient(circle at 95% 90%, rgba(30,100,200,0.30), transparent 45%),
    linear-gradient(150deg, #f3fbf5 0%, #fefaf0 50%, #eef5fb 100%);
}
body.tema-claro {
  --ink: #1c2620;
  --ink-soft: #4a574f;
  --ring-track: #e2e8df;
  --surface: rgba(255, 255, 255, 0.85);
}
body.tema-claro .screen {
  border:1px solid rgba(28,38,32,0.08);
  box-shadow:0 20px 60px rgba(20,60,40,0.12);
}
body.tema-claro .btn-secondary {
  background:rgba(28,38,32,0.07); color:var(--ink);
}
body.tema-claro .btn-secondary:hover { background:rgba(28,38,32,0.12); }
body.tema-claro #residuo {
  background:#fff; border:1px solid rgba(28,38,32,0.08);
  box-shadow:0 6px 16px rgba(20,60,40,0.12);
}
body.tema-claro #listaRanking li,
body.tema-claro #listaInstrucoes li {
  background:rgba(28,38,32,0.05);
}
body.tema-claro .theme-toggle {
  border:1px solid rgba(28,38,32,0.1);
}
body.tema-claro h1,
body.tema-claro h2,
body.tema-claro .subtitle,
body.tema-claro .hud-label,
body.tema-claro .hud-value,
body.tema-claro .timer-text,
body.tema-claro #residuoNome,
body.tema-claro .result-label,
body.tema-claro #listaRanking li,
body.tema-claro #listaInstrucoes li,
body.tema-claro #inputNome,
body.tema-claro #modalConfirmarTitulo,
body.tema-claro .erro-nome {
  color:#1c2620;
}
body.tema-claro .btn-secondary { color:#1c2620; }
body.tema-claro #listaAutores li { color:#0a3d1f; }
body.tema-claro .plus { color:var(--green-deep); }
body.tema-claro #inputNome::placeholder { color:#6b7a70; }
body.tema-claro .correto { color:var(--green-deep); }
body.tema-claro .incorreto { color:#c0392b; }
body.tema-claro .result-score #pontosFinal,
body.tema-claro .result-score #certasFinalQuiz,
body.tema-claro .result-score #erradasFinalQuiz {
  color:var(--green-deep);
}
body.tema-claro .modo-card {
  background:rgba(28,38,32,0.05);
  border:1px solid rgba(28,38,32,0.1);
}
body.tema-claro .modo-card:hover {
  background:rgba(28,38,32,0.09);
}
body.tema-claro .opcao-quiz {
  background:rgba(28,38,32,0.05);
  border:1px solid rgba(28,38,32,0.12);
}
body.tema-claro .opcao-quiz:hover {
  background:rgba(28,38,32,0.09);
}

@media (max-width:380px) {
  .screen { padding:28px 20px; }
  #ecopontos { gap:8px; }
}

/* --- Modais --- */
.modal-overlay {
  display:none;
  position:fixed; inset:0;
  background:rgba(0,0,0,0.55);
  backdrop-filter:blur(4px);
  align-items:center; justify-content:center;
  z-index:10000;
  padding:20px;
}
.modal-overlay.active { display:flex; }

.modal-box {
  width:100%; max-width:380px;
  background:var(--surface);
  backdrop-filter:blur(22px);
  -webkit-backdrop-filter:blur(22px);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:24px;
  padding:36px 28px;
  text-align:center;
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
  animation:rise .25s ease;
}

#inputNome {
  width:100%;
  padding:14px 16px;
  font-size:16px;
  font-family:'Inter', sans-serif;
  border-radius:12px;
  border:1px solid rgba(255,255,255,0.15);
  background:rgba(255,255,255,0.06);
  color:var(--ink);
  margin-top:6px;
  outline:none;
}
#inputNome:focus { border-color:var(--green); }
#inputNome::placeholder { color:var(--ink-soft); }

body.tema-claro #inputNome {
  background:rgba(28,38,32,0.05);
  border:1px solid rgba(28,38,32,0.12);
  color:var(--ink);
}

.erro-nome {
  color:var(--red);
  font-size:13px;
  min-height:0;
  margin:4px 0 0;
}

.checkbox-hardcore {
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:8px;
  font-size:14px;
  font-weight:600;
  color:var(--ink-soft);
  cursor:pointer;
}
.checkbox-hardcore input {
  width:18px;
  height:18px;
  accent-color:var(--red);
  cursor:pointer;
}
.checkbox-hardcore:has(input:checked) span {
  color:var(--red);
}

/* --- Streak --- */
.streak-wrapper {
  position:relative;
  height:0;
  margin-top:0;
  overflow:visible;
  transition:height .25s ease, margin-top .25s ease;
}
.streak-wrapper.expandido {
  height:20px;
  margin-top:16px;
}

.streak {
  position:absolute;
  top:0; left:0; right:0;
  font-size:14px;
  font-weight:700;
  color:var(--yellow);
  opacity:0;
  transform:scale(0.8);
  transition:opacity .2s ease, transform .2s ease;
}
.streak.ativa {
  opacity:1;
  transform:scale(1);
}

.streak-perdida {
  position:absolute;
  top:0; left:0; right:0;
  font-size:14px;
  font-weight:700;
  color:var(--red);
  opacity:0;
  transition:opacity .3s ease;
}
.streak-perdida.ativa {
  opacity:1;
}

/* --- Pausa --- */
#jogo.pausado {
  outline:3px solid var(--green);
  outline-offset:4px;
  box-shadow:0 20px 60px rgba(0,0,0,0.45), 0 0 30px rgba(46,204,102,0.4);
}
#jogo.pausado #residuo,
#jogo.pausado .ecoponto {
  pointer-events:none;
  opacity:0.4;
}

#overlayPausa {
  display:none;
  position:absolute;
  inset:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  background:rgba(14,24,18,0.85);
  backdrop-filter:blur(6px);
  border-radius:24px;
  z-index:50;
}
#jogo.pausado #overlayPausa { display:flex; }

.pausa-icon { font-size:40px; }
.pausa-texto { font-size:18px; font-weight:700; color:var(--ink); }

.toggle-group {
  position:fixed;
  bottom:20px;
  right:20px;
  display:flex;
  gap:10px;
  z-index:9999;
}
.toggle-group .theme-toggle {
  position:static;
}

/* --- Ecrã de escolha de modo --- */
.menuBotoes-modo {
  display:flex;
  gap:14px;
  margin-top:12px;
}
.modo-card {
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:16px;
  padding:24px 14px;
  cursor:pointer;
  transition:transform .15s ease, background .15s ease;
}
.modo-card:hover {
  background:rgba(255,255,255,0.12);
  transform:translateY(-2px);
}
.modo-icon { font-size:34px; }
.modo-titulo { font-size:16px; font-weight:700; color:var(--ink); }
.modo-desc { font-size:12px; color:var(--ink-soft); }

/* --- Quiz --- */
.pergunta-texto {
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  margin:24px 0 22px;
  line-height:1.4;
}

.opcoes-quiz {
  display:flex;
  flex-direction:column;
  gap:10px;
}
.opcao-quiz {
  background:rgba(255,255,255,0.06);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:12px;
  padding:14px 18px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  text-align:left;
  cursor:pointer;
  transition:background .15s ease, transform .1s ease;
}
.opcao-quiz:hover { background:rgba(255,255,255,0.12); }
.opcao-quiz:active { transform:scale(0.98); }

.opcao-quiz.certa {
  background:rgba(46,204,102,0.25);
  border-color:var(--green);
}
.opcao-quiz.errada {
  background:rgba(255,107,91,0.25);
  border-color:var(--red);
}
.opcao-quiz.desativada {
  pointer-events:none;
  opacity:0.6;
}

#feedbackQuiz {
  margin-top:18px; min-height:24px;
  font-size:15px; font-weight:600;
}

.pergunta-contador-texto {
  font-size:13px;
  font-weight:600;
  color:var(--ink-soft);
  text-transform:uppercase;
  letter-spacing:.05em;
  margin:0 0 8px;
}

#overlayPausaQuiz {
  display:none;
  position:absolute;
  inset:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  background:rgba(14,24,18,0.85);
  backdrop-filter:blur(6px);
  border-radius:24px;
  z-index:50;
}
#jogoQuiz.pausado #overlayPausaQuiz { display:flex; }
#jogoQuiz.pausado .opcao-quiz {
  pointer-events:none;
  opacity:0.4;
}
#jogoQuiz.pausado {
  outline:3px solid var(--green);
  outline-offset:4px;
  box-shadow:0 20px 60px rgba(0,0,0,0.45), 0 0 30px rgba(46,204,102,0.4);
}

#instrucoes {
  max-width: 560px !important;
  padding: 40px 30px;
}

.instrucoes-container {
  display: flex;
  gap: 24px;
  justify-content: center;
  max-width: 100%;
  margin: 48px auto 0;
}

.modo-coluna {
  flex: 1;
  min-width: 0;
}

.modo-coluna .modo-titulo {
  margin: 0 0 20px 0;
  font-size: 21px;
  font-weight: 700;
  color: var(--green);
  text-align: center;
  position: relative;
}

.modo-coluna .modo-titulo::after {
  content: '';
  display: block;
  width: 55px;
  height: 3px;
  background: var(--green);
  margin: 10px auto 0;
  border-radius: 3px;
}

.instrucoes-lista {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.instrucao-item {
  padding: 17px 20px;
  background: rgba(255,255,255,0.08);
  border-radius: 16px;
  font-size: 15px;              
  line-height: 1.45;
  text-align: left;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  transition: all 0.25s ease;
  border-left: 5px solid var(--green);
  min-height: 66px;
  display: flex;
  align-items: center;
}

.instrucao-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 22px rgba(0,0,0,0.28);
  background: rgba(255,255,255,0.13);
}

body.tema-claro .instrucao-item {
  background: rgba(255,255,255,0.92);
  border-color: rgba(28,38,32,0.1);
  box-shadow: 0 4px 15px rgba(20,60,40,0.1);
  border-left-color: var(--green-deep);
}

/* Responsivo */
@media (max-width: 580px) {
  #instrucoes {
    max-width: 100% !important;
    padding: 35px 20px;
  }
  .instrucoes-container {
    flex-direction: column;
    gap: 28px;
    margin-top: 40px;
  }
  .instrucao-item {
    font-size: 14.8px;
    padding: 16px 18px;
  }
}

.eco-pilhao {
  background: #e74c3c;
  color: white;
}

.eco-indiferenciado {
  background: #95a5a6;
  color: white;
}

/* Bug 5 fix: contraste do dragover no ecoponto Indiferenciado em modo claro */
body.tema-claro .eco-indiferenciado.dragover {
  box-shadow: 0 0 0 3px rgba(0,0,0,0.45) inset;
}
body.tema-claro .ecoponto.dragover {
  box-shadow: 0 0 0 3px rgba(0,0,0,0.35) inset;
}


@media (min-width: 380px) {
  #ecopontos {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- Tablet --- */
@media (max-width: 768px) {
  body {
    align-items: flex-start;
    padding: 12px;
  }
  .screen {
    max-width: 100%;          
    padding: 32px 24px;
  }
  #ecopontos {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  .menuBotoes-modo {
    gap: 10px;
  }
}

/* --- Mobile --- */
@media (max-width: 480px) {
  body {
    padding: 8px;
  }
  .screen {
    padding: 24px 16px;
    border-radius: 18px;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }
  button {
    min-height: 44px;
  }
  .hud {
    margin-bottom: 16px;
  }
  .hud-value {
    font-size: 17px;
  }
  .timer-ring,
  .timer-ring svg {
    width: 54px;
    height: 54px;
  }
  .timer-text {
    font-size: 16px;
  }
  #residuo {
    width: 80px;
    height: 80px;
    font-size: 36px;
  }
  #residuoArea {
    margin-bottom: 16px;
  }
  #ecopontos {
    grid-template-columns: repeat(3, 1fr);
    gap: 7px;
  }
  .ecoponto {
    padding: 12px 4px;
    font-size: 11px;
    border-radius: 12px;
  }
  .eco-icon {
    font-size: 22px;
  }
  .menuBotoes-modo {
    flex-direction: column;
    gap: 10px;
  }
  .modo-card {
    padding: 18px 14px;
  }
  .opcoes-quiz {
    gap: 8px;
  }
  .opcao-quiz {
    padding: 14px 14px;
    font-size: 14px;
    min-height: 44px;
  }
  .pergunta-texto {
    font-size: 16px;
    margin: 16px 0 16px;
  }
  #menu h1 {
    font-size: 30px;
  }
  .brandmark {
    font-size: 36px;
  }
  .toggle-group {
    bottom: 10px;
    right: 10px;
    gap: 8px;
  }
  .theme-toggle {
    width: 42px;
    height: 42px;
    font-size: 17px;
  }
}

.menuBotoes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.btn-topo {
  grid-column: span 2;
}

.btn-classificacoes:hover {
  background-color: var(--yellow, #f2c200) !important;
  color: #000 !important; 
}

.btn-sair:hover {
  background-color: var(--red, #ff6b5b) !important;
  color: #fff !important;
}

.ranking-filtros {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin: 16px 0 4px;
}

.ranking-filtros button {
  padding: 8px 20px;
  font-size: 13px;
  border-radius: 20px;
  background: rgba(255,255,255,0.07);
  color: var(--ink-soft);
  border: 1px solid rgba(255,255,255,0.1);
  font-weight: 600;
  cursor: pointer;
  transition: all .15s ease;
}

.ranking-filtros button.ativo {
  background: var(--green);
  color: #fff;
  border-color: transparent;
}

.ranking-filtros button:hover:not(.ativo) {
  background: rgba(255,255,255,0.13);
  color: var(--ink);
}

body.tema-claro .ranking-filtros button {
  background: rgba(28,38,32,0.06);
  border-color: rgba(28,38,32,0.12);
  color: var(--ink-soft);
}

body.tema-claro .ranking-filtros button.ativo {
  background: var(--green-deep);
  color: #fff;
}

body.tema-claro .ranking-filtros button:hover:not(.ativo) {
  background: rgba(28,38,32,0.11);
  color: var(--ink);
}