*{ box-sizing:border-box; }

:root{
  --content-half-width: 380px;
  --effect-3d: 1;
  --log-divider-width: 1px;
  --log-divider-style: dashed;
  --panel-texture: none;
}

body{
  margin:0;
  min-height:100vh;
  background:var(--bg-gradient, var(--bg));
  color:var(--text);
  font-family:var(--font-ui);
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding:24px 16px;
}

#app{ width:100%; max-width:760px; }

.topbar{
  display:flex;
  align-items:center;
  flex-wrap:nowrap;
  gap:12px;
  margin-bottom:18px;
}

.logo{
  font-family:var(--font-type);
  letter-spacing:0.14em;
  font-size:28px;
  margin:0;
  color:var(--text);
}
.logo span{ color:var(--red-ink); }
.logo a{
  color:inherit;
  text-decoration:none;
}
.logo a:hover{ opacity:.8; }

#mode-badge{ margin-left:auto; }

#btn-auth{
  transition: box-shadow .15s ease, transform .15s ease;
}
#btn-auth:hover{
  box-shadow: var(--card-shadow-hover, 0 3px 8px rgba(0,0,0,.16));
  transform: translateY(-1px);
}
#btn-auth.error{
  color:var(--red-ink);
  border-color:var(--red-ink);
}

.topbar-controls{ display:flex; align-items:center; flex-wrap:nowrap; gap:8px; }

#btn-lang{ order:1; }

#btn-howto{
  cursor:pointer;
  transition: box-shadow .15s ease, transform .15s ease;
}
#btn-howto:hover{
  box-shadow: var(--card-shadow-hover, 0 3px 8px rgba(0,0,0,.16));
  transform: translateY(-1px);
}

select{
  background: var(--panel-texture, none), var(--bg-panel);
  color:var(--text);
  border:1px solid var(--border);
  border-radius:4px;
  padding:6px 8px;
  font-family:var(--font-ui);
  font-size:13px;
}

.badge{
  font-size:11px;
  padding:4px 8px;
  border-radius:999px;
  border:1px solid var(--border);
  color:var(--muted);
  box-shadow: var(--badge-shadow, 0 1px 2px rgba(0,0,0,.12));
}
.badge.online{ color:var(--online-ink); border-color:var(--online-ink); }
.badge.offline{ color:var(--red-ink); border-color:var(--red-ink); }

.badge.clickable{
  color:var(--accent-ink);
  border-color:var(--accent-ink);
  transition: box-shadow .15s ease, transform .15s ease;
}
.badge.clickable:hover{
  box-shadow: var(--card-shadow-hover, 0 3px 8px rgba(0,0,0,.16));
  transform: translateY(-1px);
}

.badge.toggle{
  cursor:pointer;
  user-select:none;
  -webkit-tap-highlight-color:transparent;
  color:var(--accent-ink);
  border-color:var(--accent-ink);
  transition:color .15s ease, border-color .15s ease, opacity .15s ease, box-shadow .15s ease, transform .15s ease;
}
.badge.toggle:hover{
  opacity:.75;
  box-shadow: var(--card-shadow-hover, 0 3px 8px rgba(0,0,0,.16));
  transform: translateY(-1px);
}

.clickable{ cursor:pointer; }

/* Topbar estreita (compartilhada pelos 4 jogos — letchess, letrix,
   letris, letmaze — todos usam a mesma marcação de topbar): logo,
   display-toggle-btn e btn-lang ficam na primeira linha; mode-badge,
   btn-auth, btn-howto e btn-stats descem para uma segunda linha, na
   mesma ordem em que aparecem. O ::after força a quebra de linha
   independente da largura disponível (truque do item
   flex-basis:100%). Cada grupo é alinhado à direita na sua linha via
   margin-left:auto no primeiro item do grupo. */
@media (max-width: 720px){
  .topbar{
    flex-wrap: wrap;
    row-gap: 7px;
  }
  .topbar-controls{ order: 1; margin-left: auto; }
  .topbar::after{
    content: "";
    order: 2;
    flex-basis: 100%;
    width: 0;
    height: 0;
  }
  #mode-badge,
  #btn-auth,
  #btn-howto,
  #btn-stats{
    order: 3;
  }
  #mode-badge{ margin-left: auto; }
}

.layout{ display:flex; gap:20px; flex-wrap:wrap; }

.side-panel{
  flex:1;
  min-width:180px;
  display:flex;
  flex-direction:column;
  gap:14px;
}

.stat{
  background: var(--panel-texture, none), var(--bg-panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:10px 12px;
  display:flex;
  flex-direction:column;
  gap:2px;
  box-shadow: var(--card-shadow, 0 1px 3px rgba(0,0,0,.12));
  transition: box-shadow .15s ease, transform .15s ease;
}
#dict-stat:hover,
#level-stat:hover{
  box-shadow: var(--card-shadow-hover, 0 3px 8px rgba(0,0,0,.16));
  transform: translateY(-1px);
}
.stat.small{ padding:8px 12px; }

#score-stat,
#stage-stat{
  position:relative;
  overflow:hidden;
}
#score-stat::before,
#stage-stat::before{
  content:"";
  position:absolute;
  left:0; top:0; bottom:0;
  width:4px;
  background:var(--accent-ink);
}

.stat-row{
  display:flex;
  gap:14px;
}
.stat-row .stat{
  flex:1;
  min-width:0;
}
.stat-label{ font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; }
.stat-value{
 font-family:var(--font-type);
 font-size:var(--text-size);
 line-height:var(--line-height);
 color:var(--accent-ink);
 }

.stat select{
  appearance:none;
  -webkit-appearance:none;
  -moz-appearance:none;
  display:block;
  width:100%;
  height:var(--line-height);
  line-height:var(--line-height);
  font-family:var(--font-type);
  font-size:var(--text-size);
  font-weight:400;
  color:var(--accent-ink);
  background:transparent;
  border:none;
  border-radius:0;
  padding:0 20px 0 0;
  cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='currentColor'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right center;
  background-size:10px 6px;
}
.stat select:focus{
  outline:2px solid var(--accent-ink);
  outline-offset:2px;
}

.stat select option{
  background-color:var(--bg-panel);
  color:var(--text);
}

#stage-indicator{ font-size:var(--text-size); }
#stage-indicator.stage-pulse{ animation:letris-stamp .5s ease-out; }

.log{
  background: var(--panel-texture, none), var(--bg-panel);
  border:1px solid var(--border);
  border-radius:6px;
  padding:10px 12px;
  flex:1;
  min-height:120px;
  max-height:340px;
  overflow-y:auto;
  box-shadow: var(--card-shadow, 0 1px 3px rgba(0,0,0,.12));
}
.log-title{ font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; margin:0 0 6px; }
#word-log{ list-style:none; margin:0; padding:0; font-family:var(--font-type); font-size:14px; }
#word-log li{ padding:3px 0; border-bottom:var(--log-divider-width, 1px) var(--log-divider-style, dashed) var(--log-divider); display:flex; justify-content:space-between; }
#word-log li.bonus{ color:var(--accent-ink); font-weight:bold; }
#word-log li.repeated{ color:var(--repeated-ink, #8a8577); font-style:italic; }

#word-log li.extra{
  background:rgba(76,122,147,0.16);
  border-radius:4px;
  padding-left:6px;
  padding-right:6px;
}
#word-log li.extra span:first-child{ color:var(--extra-ink); }
#word-log li.extra span:last-child{ color:var(--extra-ink); }

#word-log li.pending{ opacity:.5; }
#word-log li.pending .tag{ color:var(--accent-ink); }
#word-log li.bonus-target span:first-child{ color:var(--accent-ink); }
#word-log li.found {
  opacity:1;
  background:var(--found-bg, rgba(201,151,31,0.14));
  border-radius:4px;
  padding-left:6px;
  padding-right:6px;
  animation:letris-stamp .25s ease-out;
}
#word-log li.found span:first-child{
  text-decoration:line-through;
  text-decoration-color:var(--red-ink);
  color:var(--text);
}
#word-log li.found .tag{ color:var(--accent-ink); font-weight:bold; }

@keyframes letris-stamp{
  from{ transform:scale(1.12); }
  to{ transform:scale(1); }
}

.controls-help{ font-size:11px; color:var(--muted); }

.modal-card.modal-card-howto{
  width:min(360px, 92%);
  max-width:360px;
  max-height:82vh;
  overflow-y:auto;
  text-align:left;
  padding:20px 22px;
}

#howto-modal{
  position:fixed;
  inset:0;
  z-index:3;
}

.howto-body{ text-align:left; }
.howto-body p{ margin:0 0 10px; font-size:14px; color:var(--modal-ink); line-height:1.5; }
.howto-section{
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--modal-accent);
  margin:16px 0 8px;
  font-weight:600;
}
.howto-section:first-child{ margin-top:0; }
.howto-list{ margin:0 0 10px; padding-left:18px; font-size:14px; color:var(--modal-ink); line-height:1.5; }
.howto-list li{ margin-bottom:4px; }
.howto-list strong{ color:var(--modal-accent); }

.modal{
  position:absolute; inset:0;
  background:rgba(18,17,15,.82);
  display:flex; align-items:center; justify-content:center;
  border-radius:3px;
}
.modal.hidden{ display:none; }

.hidden{ display:none; }

.modal-card{
  position:relative;
  background:var(--modal-bg);
  color:var(--modal-ink);
  padding:22px 26px;
  border-radius:4px;
  text-align:center;
  min-width:220px;
  max-width:min(320px, 82vw);
  box-shadow:0 0 0 3px var(--modal-accent) inset;
}
.modal-close-x{
  position:absolute;
  top:10px; right:10px;
  width:26px; height:26px;
  display:flex; align-items:center; justify-content:center;
  border:none; border-radius:50%;
  background:transparent;
  color:var(--modal-muted);
  font-size:18px; line-height:1;
  cursor:pointer;
  transition: background .15s ease, color .15s ease;
}
.modal-close-x:hover{
  background:rgba(128,128,128,.16);
  color:var(--modal-ink);
}
.modal-close-x:active{ transform:scale(.92); }
.modal-eyebrow{
  font-size:11px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--modal-accent); margin:0 0 6px;
}
.modal-detail{ font-size:13px; color:var(--modal-muted); margin:0 0 14px; }
.modal-card-gameover h2,
.modal-card-start h2{
  font-family:var(--font-type);
  font-size:32px;
  letter-spacing:.06em;
  margin:0 0 6px;
  color:var(--modal-accent);
}
.modal-actions{ display:flex; gap:10px; justify-content:center; }
.modal-hint{ font-size:11px; color:var(--modal-hint); margin:10px 0 0; }

.btn{
  border:none; border-radius:4px; padding:8px 14px;
  font-family:var(--font-ui); font-size:13px; cursor:pointer;
  transition: transform .1s ease, box-shadow .15s ease, filter .1s ease;
}
.btn-primary{
  background: linear-gradient(180deg, rgba(255,255,255,calc(.28 * var(--effect-3d, 1))) 0%, rgba(255,255,255,0) 45%, rgba(0,0,0,calc(.15 * var(--effect-3d, 1))) 100%), var(--modal-accent);
  color:var(--modal-accent-text);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,calc(.35 * var(--effect-3d, 1))),
    inset 0 -2px 2px rgba(0,0,0,calc(.2 * var(--effect-3d, 1))),
    0 2px 4px rgba(0,0,0,.25);
}
.btn-primary:hover{ filter:brightness(1.06); transform:translateY(-1px); }
.btn-primary:active{
  background: linear-gradient(180deg, rgba(0,0,0,calc(.2 * var(--effect-3d, 1))) 0%, rgba(0,0,0,0) 50%, rgba(255,255,255,calc(.1 * var(--effect-3d, 1))) 100%), var(--modal-accent);
  box-shadow: inset 0 2px 3px rgba(0,0,0,calc(.3 * var(--effect-3d, 1)));
  transform: translateY(1px) scale(0.97);
}

.btn-ghost{
  background: linear-gradient(180deg, rgba(255,255,255,calc(.07 * var(--effect-3d, 1))) 0%, rgba(255,255,255,0) 60%), transparent;
  border:1px solid var(--muted);
  color:var(--modal-ink);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,calc(.1 * var(--effect-3d, 1))),
    0 1px 2px rgba(0,0,0,.1);
}
.btn-ghost:hover{
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,calc(.14 * var(--effect-3d, 1))),
    0 2px 5px rgba(0,0,0,.16);
}
.btn-ghost:active{
  transform: translateY(1px) scale(0.97);
  box-shadow: inset 0 2px 3px rgba(0,0,0,calc(.15 * var(--effect-3d, 1)));
}

.sr-only{
  position:absolute;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}