/* ═══════════════════════════════════════════════════════════════════════════
   TRIADESTACK — Folha de estilos principal
   Tema escuro moderno com estética de jogo de tabuleiro físico
═══════════════════════════════════════════════════════════════════════════ */

/* ─── Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Paleta principal */
  --clr-bg:          #0f1117;
  --clr-surface:     #1a1d27;
  --clr-surface-2:   #22263a;
  --clr-surface-3:   #2c3150;
  --clr-border:      #333755;
  --clr-border-glow: #4a5080;

  /* Texto */
  --clr-text:        #e8eaf0;
  --clr-text-muted:  #7a80a0;
  --clr-text-dim:    #4a5070;

  /* Cores de ação */
  --clr-accent:      #6c63ff;
  --clr-accent-glow: rgba(108, 99, 255, 0.35);
  --clr-danger:      #ff4d6d;
  --clr-success:     #2dd4bf;
  --clr-warning:     #fbbf24;

  /* Tabuleiro */
  --clr-cell-dark:   #2a3050;
  --clr-cell-light:  #181c2e;
  --clr-cell-border: #1a1f35;

  /* Highlights */
  --clr-hl-move:    rgba(45, 212, 191, 0.30);
  --clr-hl-capture: rgba(255, 77, 109, 0.35);
  --clr-hl-stack:   rgba(108, 99, 255, 0.35);
  --clr-hl-return:  rgba(251, 191, 36, 0.35);
  --clr-hl-select:  rgba(108, 99, 255, 0.55);

  /* Peças */
  --clr-piece-white-top:    #f0f0f0;
  --clr-piece-white-mid:    #d8d8e0;
  --clr-piece-white-edge:   #9090a8;
  --clr-piece-white-shadow: rgba(0,0,0,0.4);

  --clr-piece-black-top:    #2a2a3a;
  --clr-piece-black-mid:    #1a1a28;
  --clr-piece-black-edge:   #050508;
  --clr-piece-black-shadow: rgba(0,0,0,0.7);

  /* Tipografia */
  --font-main:  'Inter', 'Segoe UI', Arial, Helvetica, sans-serif;
  --font-title: 'Inter', 'Segoe UI', Arial, Helvetica, sans-serif;

  /* Espaçamento */
  --cell-size: 72px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transições */
  --t-fast:   120ms ease;
  --t-normal: 220ms ease;
  --t-slow:   380ms ease;
}

html, body {
  height: 100%;
  font-family: 'Inter', 'Segoe UI', Arial, Helvetica, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  overflow: hidden;
}

/* Garante sans-serif em todo o documento */
*, *::before, *::after {
  font-family: inherit;
}

/* ═══════════════════════════════════════════════════════════════════════════
   UTILITÁRIOS
═══════════════════════════════════════════════════════════════════════════ */

.hidden { display: none !important; }

.screen {
  width: 100vw;
  height: 100vh;
  position: fixed;
  inset: 0;
  overflow: hidden;
}

/* ═══════════════════════════════════════════════════════════════════════════
   BOTÕES
═══════════════════════════════════════════════════════════════════════════ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 10px 22px;
  transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  user-select: none;
}

.btn:active { transform: scale(0.96); }

.btn--primary {
  background: var(--clr-accent);
  color: #fff;
  box-shadow: 0 4px 18px var(--clr-accent-glow);
}
.btn--primary:hover {
  background: #7c74ff;
  box-shadow: 0 6px 24px var(--clr-accent-glow);
}

.btn--secondary {
  background: var(--clr-surface-3);
  color: var(--clr-text);
  border: 1px solid var(--clr-border);
}
.btn--secondary:hover {
  background: var(--clr-surface-2);
  border-color: var(--clr-border-glow);
}

.btn--ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
}
.btn--ghost:hover {
  color: var(--clr-text);
  border-color: var(--clr-border-glow);
  background: var(--clr-surface-2);
}

.btn--icon {
  background: var(--clr-surface-2);
  color: var(--clr-text-muted);
  border: 1px solid var(--clr-border);
  padding: 8px 16px;
  font-size: 0.85rem;
}
.btn--icon:hover {
  color: var(--clr-text);
  background: var(--clr-surface-3);
}

.btn--menu {
  width: 220px;
  padding: 14px 28px;
  font-size: 1rem;
  border-radius: var(--radius-lg);
}

/* ═══════════════════════════════════════════════════════════════════════════
   TELA DE MENU
═══════════════════════════════════════════════════════════════════════════ */

.screen--menu {
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 50% 30%, var(--menu-bg-start, #1c1f3a) 0%, var(--menu-bg-end, #0f1117) 70%);
}

.menu-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(
      45deg,
      transparent 0px,
      transparent 38px,
      rgba(255,255,255,0.015) 38px,
      rgba(255,255,255,0.015) 40px
    );
  pointer-events: none;
}

.menu-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  z-index: 1;
}

.menu-header {
  text-align: center;
}

.menu-logo {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
  text-shadow: 0 4px 32px rgba(108,99,255,0.4);
}

.logo-triade {
  color: var(--clr-text);
}

.logo-stack {
  color: var(--clr-accent);
}

.menu-tagline {
  margin-top: 12px;
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.menu-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.menu-footer {
  color: var(--clr-text-dim);
  font-size: 0.75rem;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TELA DE JOGO
═══════════════════════════════════════════════════════════════════════════ */

.screen--game {
  display: flex;
  flex-direction: column;
  background: var(--clr-bg);
  overflow: auto;
}

/* Header do jogo */
.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  flex-shrink: 0;
}

.game-title {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}

/* Body do jogo */
.game-body {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 24px;
  padding: 20px;
  overflow: auto;
}

/* ─── Painel de status ───────────────────────────────────────────────────── */

.status-panel {
  width: 200px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.status-players {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.status-player {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  transition: border-color var(--t-normal), background var(--t-normal);
}

.status-player--active {
  border-color: var(--clr-accent);
  background: var(--clr-surface-2);
  box-shadow: 0 0 12px var(--clr-accent-glow);
}

.status-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
}

.status-dot--white {
  background: radial-gradient(circle at 35% 35%, #fff 0%, #c0c0cc 60%, #8888a0 100%);
  border: 2px solid #aaa;
}

.status-dot--black {
  background: radial-gradient(circle at 35% 35%, #4a4a5e 0%, #1e1e2e 60%, #050508 100%);
  border: 2px solid #333;
}

.status-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.status-name {
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-detail {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
}

.status-turn {
  padding: 10px 12px;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-accent);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 3px;
  box-shadow: 0 0 10px var(--clr-accent-glow);
}

.status-turn-label {
  font-size: 0.7rem;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.status-turn-player {
  font-size: 0.92rem;
  font-weight: 700;
}

.status-turn-player--white { color: #e8e8f0; }
.status-turn-player--black { color: var(--clr-accent); }

.status-phase {
  padding: 8px 12px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  text-align: center;
  line-height: 1.4;
}

/* ─── Painel de legenda ──────────────────────────────────────────────────── */

.legend-panel {
  width: 160px;
  flex-shrink: 0;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 0.78rem;
  align-self: flex-start;
}

.legend-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-muted);
  margin-bottom: 10px;
}

.legend-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.legend-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--clr-text-muted);
}

.legend-dot {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
}

.legend-dot--move    { background: var(--clr-success); opacity: 0.8; }
.legend-dot--capture { background: var(--clr-danger);  opacity: 0.8; }
.legend-dot--stack   { background: var(--clr-accent);  opacity: 0.8; }
.legend-dot--return  { background: var(--clr-warning);  opacity: 0.8; }
.legend-dot--selected { background: var(--clr-accent); border: 2px solid white; }

.legend-stack-info {
  border-top: 1px solid var(--clr-border);
  padding-top: 10px;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

.legend-stack-info h4 {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clr-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TABULEIRO
═══════════════════════════════════════════════════════════════════════════ */

.board-container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.board {
  display: grid;
  grid-template-columns: repeat(var(--board-cols, 8), var(--cell-size, 72px));
  grid-template-rows:    repeat(var(--board-rows, 6), var(--cell-size, 72px));
  border: var(--board-border, 3px solid #4a5080);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--board-shadow, 0 8px 40px rgba(0,0,0,0.6));
  --cell-size: 72px;
}

/* ─── Casas ──────────────────────────────────────────────────────────────── */

.cell {
  width: var(--cell-size, 72px);
  height: var(--cell-size, 72px);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast);
  cursor: default;
}

.cell--light {
  background: var(--clr-cell-light);
}

.cell--dark {
  background: var(--clr-cell-dark);
  cursor: pointer;
}

.cell--dark:hover {
  background: #323862;
}

/* Highlights */
.cell--selected {
  background: var(--clr-hl-select) !important;
  box-shadow: inset 0 0 0 2px var(--clr-accent);
}

.cell--move {
  background: var(--clr-hl-move) !important;
  cursor: pointer;
}
.cell--move::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(45, 212, 191, 0.55);
  border: 2px solid rgba(45, 212, 191, 0.9);
  pointer-events: none;
}

.cell--capture {
  background: var(--clr-hl-capture) !important;
  cursor: pointer;
}
.cell--capture::after {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 77, 109, 0.5);
  border: 2px solid rgba(255, 77, 109, 0.9);
  pointer-events: none;
}

.cell--stack {
  background: var(--clr-hl-stack) !important;
  cursor: pointer;
  box-shadow: inset 0 0 0 2px var(--clr-accent);
}

.cell--return {
  background: var(--clr-hl-return) !important;
  cursor: pointer;
  animation: pulse-return 1s ease-in-out infinite alternate;
}

/* ═══════════════════════════════════════════════════════════════════════════
   PEÇAS E PILHAS
═══════════════════════════════════════════════════════════════════════════ */

.stack-wrapper {
  position: relative;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  pointer-events: none;
}

.piece {
  position: absolute;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  /* Offset vertical por camada: peças mais fundas ficam "abaixo" */
  bottom: calc(var(--layer, 0) * 5px);
  transition: transform var(--t-normal);
}

/* Peça branca */
.piece--white {
  background: radial-gradient(circle at 35% 30%,
    var(--clr-piece-w-top, #f0f0f0) 0%,
    var(--clr-piece-w-mid, #d8d8e0) 55%,
    var(--clr-piece-w-edge, #9090a8) 100%
  );
  border: 2px solid rgba(255,255,255,0.3);
  box-shadow:
    0 3px 8px rgba(0,0,0,0.4),
    inset 0 1px 3px rgba(255,255,255,0.6),
    inset 0 -2px 4px rgba(0,0,0,0.2);
}

/* Peça preta */
.piece--black {
  background: radial-gradient(circle at 35% 30%,
    var(--clr-piece-b-top, #2a2a3a) 0%,
    var(--clr-piece-b-mid, #1a1a28) 55%,
    var(--clr-piece-b-edge, #050508) 100%
  );
  border: 2px solid rgba(255,255,255,0.08);
  box-shadow:
    0 3px 8px rgba(0,0,0,0.7),
    inset 0 1px 3px rgba(255,255,255,0.1),
    inset 0 -2px 4px rgba(0,0,0,0.5);
}

/* Peça desbloqueada para empilhamento — brilho sutil */
.piece--unlocked {
  box-shadow:
    0 3px 8px rgba(0,0,0,0.4),
    0 0 8px rgba(108, 99, 255, 0.5),
    inset 0 1px 3px rgba(255,255,255,0.2);
}

/* Badge de contagem */
.stack-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--clr-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(108,99,255,0.5);
  z-index: 10;
  pointer-events: none;
}

/* Badge dourado para pilha de 3 (movimento para trás desbloqueado) */
.stack-badge--max {
  background: var(--clr-warning);
  color: #1a1000;
  box-shadow: 0 2px 8px rgba(251,191,36,0.6);
}

/* Indicador ⚡ — aparece embaixo de pilhas com 3 peças */
.stack-bolt {
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  line-height: 1;
  pointer-events: none;
  animation: bolt-pulse 1.4s ease-in-out infinite alternate;
  z-index: 10;
}

/* Brilho dourado nas peças de pilha máxima */
.stack-wrapper--max .piece {
  filter: drop-shadow(0 0 5px rgba(251, 191, 36, 0.45));
}

@keyframes bolt-pulse {
  0%   { opacity: 0.5; transform: translateX(-50%) scale(0.9); }
  100% { opacity: 1.0; transform: translateX(-50%) scale(1.15); }
}

/* Pontos indicadores de tamanho */
.stack-dots {
  position: absolute;
  bottom: -14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 3px;
  pointer-events: none;
}

.stack-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--clr-text-muted);
  opacity: 0.7;
}

/* ═══════════════════════════════════════════════════════════════════════════
   OVERLAYS (modais, vitória)
═══════════════════════════════════════════════════════════════════════════ */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity var(--t-normal);
  backdrop-filter: blur(4px);
}

.overlay--visible {
  opacity: 1;
}

.overlay-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-glow);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  max-width: 480px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow:
    0 24px 60px rgba(0,0,0,0.7),
    0 0 0 1px rgba(255,255,255,0.04);
  transform: translateY(16px);
  transition: transform var(--t-normal);
}

.overlay--visible .overlay-card {
  transform: translateY(0);
}

.overlay-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* ─── Tela de vitória ────────────────────────────────────────────────────── */

.victory-card {
  text-align: center;
  border-color: var(--clr-accent);
  box-shadow:
    0 24px 60px rgba(0,0,0,0.7),
    0 0 40px var(--clr-accent-glow);
}

.victory-crown {
  font-size: 3.5rem;
  margin-bottom: 12px;
  animation: spin-bounce 0.8s cubic-bezier(0.34,1.56,0.64,1) forwards;
}

.victory-title {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
  text-shadow: 0 0 24px var(--clr-accent-glow);
  margin-bottom: 8px;
}

.victory-winner {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 6px;
}

.victory-reason {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  margin-bottom: 4px;
}

/* ─── Modal de regras ────────────────────────────────────────────────────── */

.rules-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--clr-accent);
}

.rules-body {
  display: flex;
  flex-direction: column;
  gap: 18px;
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.rules-body section h3 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.rules-body ul {
  list-style: disc;
  padding-left: 20px;
  margin-top: 4px;
}

.rules-body strong {
  color: var(--clr-text);
}

/* ─── Modal de configurações ─────────────────────────────────────────────── */

.settings-note {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-bottom: 8px;
}

.setting-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.setting-row label {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  font-weight: 600;
}

.setting-input {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-size: 0.9rem;
  padding: 8px 12px;
  outline: none;
  transition: border-color var(--t-fast);
}

.setting-input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 2px var(--clr-accent-glow);
}

/* ═══════════════════════════════════════════════════════════════════════════
   TOAST
═══════════════════════════════════════════════════════════════════════════ */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--clr-surface-3);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  color: var(--clr-text);
  font-size: 0.88rem;
  padding: 10px 22px;
  z-index: 2000;
  opacity: 0;
  transition: opacity var(--t-fast), transform var(--t-fast);
  white-space: nowrap;
  max-width: 90vw;
  white-space: normal;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast--error {
  border-color: var(--clr-danger);
  background: #2a1020;
  color: #ffb3c0;
}

.toast--info {
  border-color: var(--clr-accent);
  background: #171230;
  color: #c0b8ff;
}

/* ═══════════════════════════════════════════════════════════════════════════
   ANIMAÇÕES
═══════════════════════════════════════════════════════════════════════════ */

/* Captura — flash vermelho + scale */
@keyframes capture-flash {
  0%   { transform: scale(1);    background-color: rgba(255, 77, 109, 0.5); }
  40%  { transform: scale(1.06); background-color: rgba(255, 77, 109, 0.7); }
  100% { transform: scale(1);    background-color: transparent; }
}

.anim--capture {
  animation: capture-flash 0.3s ease forwards;
}

/* Empilhamento — bounce */
@keyframes stack-bounce {
  0%   { transform: scale(1); }
  30%  { transform: scale(1.08) translateY(-4px); }
  60%  { transform: scale(0.97) translateY(2px); }
  100% { transform: scale(1); }
}

.anim--stack .stack-wrapper {
  animation: stack-bounce 0.35s cubic-bezier(0.34,1.56,0.64,1) forwards;
}

/* Movimento — fade + slide */
@keyframes move-in {
  0%   { opacity: 0.3; transform: scale(0.88); }
  100% { opacity: 1;   transform: scale(1); }
}

.anim--move .stack-wrapper {
  animation: move-in 0.2s ease forwards;
}

/* Retorno — pulso dourado */
@keyframes pulse-return {
  0%   { box-shadow: inset 0 0 0 2px rgba(251,191,36,0.4); }
  100% { box-shadow: inset 0 0 0 3px rgba(251,191,36,0.9), 0 0 12px rgba(251,191,36,0.3); }
}

/* Vitória — coroa */
@keyframes spin-bounce {
  0%   { transform: scale(0) rotate(-180deg); opacity: 0; }
  70%  { transform: scale(1.2) rotate(10deg); opacity: 1; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVIDADE
═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  :root {
    --cell-size: 56px;
  }

  .game-body {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 12px;
  }

  .status-panel {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .status-players {
    flex-direction: row;
    flex: 1;
  }

  .status-player {
    flex: 1;
  }

  .status-turn, .status-phase {
    flex: 1;
    min-width: 120px;
  }

  .legend-panel {
    width: 100%;
  }

  .legend-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px 16px;
  }

  .piece {
    width: 38px;
    height: 38px;
  }

  .stack-wrapper {
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 600px) {
  :root {
    --cell-size: 44px;
  }

  .piece {
    width: 30px;
    height: 30px;
  }

  .stack-wrapper {
    width: 34px;
    height: 34px;
  }

  .stack-badge {
    width: 16px;
    height: 16px;
    font-size: 0.6rem;
    top: -4px;
    right: -4px;
  }

  .stack-dots {
    display: none;
  }

  .game-header {
    padding: 8px 12px;
  }

  .game-title {
    font-size: 1.1rem;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   SCROLLBAR
═══════════════════════════════════════════════════════════════════════════ */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--clr-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--clr-border-glow);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-accent);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SELETOR DE TEMAS
═══════════════════════════════════════════════════════════════════════════ */

.theme-picker {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.theme-picker-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-muted);
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
}

.theme-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  border-radius: 10px;
  padding: 8px 6px;
  border: 2px solid transparent;
  background: var(--clr-surface-2);
  transition: border-color var(--t-fast), transform var(--t-fast), background var(--t-fast);
  user-select: none;
}

.theme-card:hover {
  border-color: var(--clr-border-glow);
  transform: translateY(-2px);
}

.theme-card--active {
  border-color: var(--clr-accent) !important;
  background: var(--clr-surface-3);
  box-shadow: 0 0 12px var(--clr-accent-glow);
}

.theme-preview {
  width: 48px;
  height: 36px;
  border-radius: 6px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  border: 1px solid rgba(255,255,255,0.1);
  flex-shrink: 0;
}

.theme-preview-sq {
  width: 100%;
  height: 100%;
}

.theme-preview-sq--dark  { background: var(--sq-dark); }
.theme-preview-sq--light { background: var(--sq-light); }

.theme-name {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--clr-text-muted);
  text-align: center;
}

.theme-card--active .theme-name {
  color: var(--clr-text);
}

/* Checkmark quando ativo */
.theme-card--active .theme-preview::after {
  content: '✓';
  position: absolute;
  font-size: 1rem;
  color: var(--clr-accent);
}

/* ─── Tema Classic: casas com textura de madeira simulada ──────────────── */
[data-theme="classic"] .cell--dark {
  background-image: repeating-linear-gradient(
    135deg,
    rgba(0,0,0,0.04) 0px, rgba(0,0,0,0.04) 2px,
    transparent 2px, transparent 8px
  );
}

/* ─── Tema Neon: efeito grid nas casas escuras ──────────────────────────── */
[data-theme="neon"] .cell--dark {
  background-image: linear-gradient(
    rgba(0,255,136,0.03) 1px, transparent 1px
  ),
  linear-gradient(90deg, rgba(0,255,136,0.03) 1px, transparent 1px);
  background-size: 12px 12px;
}

[data-theme="neon"] .cell--selected {
  box-shadow: inset 0 0 0 2px #00ff88, 0 0 12px rgba(0,255,136,0.4);
}

[data-theme="neon"] .cell--move::after {
  background: rgba(0,255,136,0.4);
  border-color: #00ff88;
  box-shadow: 0 0 8px rgba(0,255,136,0.5);
}

[data-theme="neon"] .cell--capture::after {
  background: rgba(255,0,102,0.4);
  border-color: #ff0066;
  box-shadow: 0 0 8px rgba(255,0,102,0.5);
}

/* ─── Tema Marble: gradiente sutil nas casas ────────────────────────────── */
[data-theme="marble"] .cell--dark {
  background-image: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.06) 0%, transparent 60%);
}

[data-theme="marble"] .cell--light {
  background-image: radial-gradient(ellipse at 30% 30%, rgba(255,255,255,0.12) 0%, transparent 60%);
}

/* ─── Tema Forest: textura de grama nas casas claras ───────────────────── */
[data-theme="forest"] .cell--light {
  background-image: repeating-linear-gradient(
    90deg,
    rgba(0,0,0,0.04) 0px, rgba(0,0,0,0.04) 1px,
    transparent 1px, transparent 6px
  );
}

/* ─── Tema Lava: gradiente quente nas casas ─────────────────────────────── */
[data-theme="lava"] .cell--dark {
  background-image: radial-gradient(ellipse at 50% 100%, rgba(255,100,0,0.15) 0%, transparent 70%);
}

[data-theme="lava"] .cell--light {
  background-image: radial-gradient(ellipse at 50% 100%, rgba(255,140,0,0.20) 0%, transparent 70%);
}

/* ═══════════════════════════════════════════════════════════════════════════
   MODO DE JOGO — Modal de seleção (2P vs Bot)
═══════════════════════════════════════════════════════════════════════════ */

.mode-card {
  max-width: 520px;
}

/* ─── Botões de modo (2P / Bot) ──────────────────────────────────────────── */

.mode-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.mode-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 12px;
  background: var(--clr-surface-2);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
  color: var(--clr-text-muted);
}

.mode-btn:hover {
  border-color: var(--clr-border-glow);
  background: var(--clr-surface-3);
  transform: translateY(-2px);
}

.mode-btn--active {
  border-color: var(--clr-accent) !important;
  background: var(--clr-surface-3) !important;
  color: var(--clr-text) !important;
  box-shadow: 0 0 16px var(--clr-accent-glow);
}

.mode-icon {
  font-size: 2rem;
  line-height: 1;
}

.mode-label {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.mode-desc {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  text-align: center;
  line-height: 1.4;
}

.mode-btn--active .mode-desc {
  color: var(--clr-text-muted);
}

/* ─── Seção de nível do bot ──────────────────────────────────────────────── */

.bot-level-section {
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: fade-in 0.2s ease;
}

.bot-level-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--clr-text-muted);
  margin-bottom: 2px;
}

/* ─── Botões de nível ────────────────────────────────────────────────────── */

.bot-level-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.level-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 8px;
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
  color: var(--clr-text-muted);
}

.level-btn:hover {
  border-color: var(--clr-border-glow);
  transform: translateY(-1px);
}

.level-btn--active {
  border-color: var(--clr-accent) !important;
  background: var(--clr-surface-2) !important;
  color: var(--clr-text) !important;
  box-shadow: 0 0 10px var(--clr-accent-glow);
}

/* Cores por nível quando ativo */
.level-btn[data-level="easy"].level-btn--active   { border-color: var(--clr-success) !important; box-shadow: 0 0 10px rgba(45,212,191,0.3); }
.level-btn[data-level="medium"].level-btn--active { border-color: var(--clr-warning) !important; box-shadow: 0 0 10px rgba(251,191,36,0.3); }
.level-btn[data-level="hard"].level-btn--active   { border-color: var(--clr-danger)  !important; box-shadow: 0 0 10px rgba(255,77,109,0.3); }

.level-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.level-name {
  font-size: 0.82rem;
  font-weight: 700;
}

.level-hint {
  font-size: 0.65rem;
  color: var(--clr-text-muted);
  text-align: center;
  line-height: 1.3;
}

/* ─── Seleção de cor ─────────────────────────────────────────────────────── */

.color-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.color-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--t-fast), background var(--t-fast);
  color: var(--clr-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.color-btn:hover {
  border-color: var(--clr-border-glow);
  background: var(--clr-surface-2);
}

.color-btn--active {
  border-color: var(--clr-accent) !important;
  background: var(--clr-surface-2) !important;
  color: var(--clr-text) !important;
  box-shadow: 0 0 10px var(--clr-accent-glow);
}

.color-dot {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

.color-dot--white {
  background: radial-gradient(circle at 35% 35%, #fff 0%, #c0c0cc 60%, #8888a0 100%);
  border: 1px solid rgba(255,255,255,0.5);
}

.color-dot--black {
  background: radial-gradient(circle at 35% 35%, #4a4a5e 0%, #1e1e2e 60%, #050508 100%);
  border: 1px solid rgba(255,255,255,0.1);
}

.color-hint {
  font-size: 0.65rem;
  color: var(--clr-text-muted);
  font-weight: 400;
  margin-left: auto;
}

/* ═══════════════════════════════════════════════════════════════════════════
   INDICADOR "BOT PENSANDO"
═══════════════════════════════════════════════════════════════════════════ */

.game-header-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.bot-thinking {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-accent);
  letter-spacing: 0.05em;
  animation: fade-in 0.2s ease;
}

.bot-thinking-dots {
  display: flex;
  gap: 3px;
  align-items: center;
}

.bot-thinking-dots span {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--clr-accent);
  animation: dot-bounce 1.2s ease-in-out infinite;
}

.bot-thinking-dots span:nth-child(1) { animation-delay: 0s; }
.bot-thinking-dots span:nth-child(2) { animation-delay: 0.2s; }
.bot-thinking-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dot-bounce {
  0%, 80%, 100% { transform: scale(0.7); opacity: 0.4; }
  40%           { transform: scale(1.2); opacity: 1.0; }
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Tabuleiro bloqueado visualmente na vez do bot ─────────────────────── */
.board-container.bot-turn {
  opacity: 0.92;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   BADGE DE MODO NO STATUS PANEL
═══════════════════════════════════════════════════════════════════════════ */

.status-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--clr-surface-3);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  align-self: center;
}

.status-mode-badge--bot {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: rgba(108,99,255,0.1);
}

/* ─── Responsivo ─────────────────────────────────────────────────────────── */

@media (max-width: 500px) {
  .mode-options {
    grid-template-columns: 1fr;
  }

  .bot-level-options {
    grid-template-columns: 1fr;
  }

  .color-options {
    grid-template-columns: 1fr;
  }
}