:root {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --board-bg: #1b263b;
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --correct: #22c55e;
  --present: #eab308;
  --absent: #475569;
  --key-bg: #334155;
  --key-hover: #475569;
  --border-color: #334155;
  --tile-empty-bg: rgba(255, 255, 255, 0.03);
  --tile-border: #475569;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

.game-container {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 12px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.globe-icon {
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.3));
  transition: transform 0.3s ease;
}

.brand:hover .globe-icon {
  transform: rotate(15deg) scale(1.08);
}

h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #f1f5f9;
}

.nav-buttons {
  display: flex;
  gap: 6px;
}

.icon-btn {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.icon-btn:hover {
  background: var(--key-hover);
  transform: translateY(-1px);
}

.mode-selector {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 12px 0;
}

.mode-btn {
  background-color: var(--card-bg);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.mode-btn.active {
  background-color: #2563eb;
  color: #ffffff;
  border-color: #3b82f6;
  box-shadow: 0 0 12px rgba(37, 99, 235, 0.4);
}

/* Griglia di gioco */
.board-wrapper {
  background-color: var(--board-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.2);
  margin-bottom: 12px;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.board {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.tile-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
}

.tile {
  width: 38px;
  height: 44px;
  border: 2px solid var(--tile-border);
  background-color: var(--tile-empty-bg);
  display: flex;
  justify-content: center;
  align-items: center;
  font-weight: 800;
  font-size: 1.15rem;
  text-transform: uppercase;
  border-radius: 6px;
  color: #ffffff;
  user-select: none;
  transition: border-color 0.15s, background-color 0.15s;
}

.tile.filled {
  border-color: #94a3b8;
  background-color: rgba(255, 255, 255, 0.08);
  animation: pop 0.1s ease-in-out;
}

.tile.space {
  width: 24px;
  background-color: rgba(255, 255, 255, 0.03);
  border-style: dashed;
  color: #64748b;
}

.tile.ghost {
  opacity: 0.25;
  border-style: dotted;
}

/* Animazioni dei colori */
.tile.flip {
  animation: flip 0.5s ease forwards;
}

.tile.correct { background-color: var(--correct) !important; border-color: var(--correct) !important; }
.tile.present { background-color: var(--present) !important; border-color: var(--present) !important; }
.tile.absent { background-color: var(--absent) !important; border-color: var(--absent) !important; }

@keyframes pop {
  0% { transform: scale(0.85); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes flip {
  0% { transform: rotateX(0deg); }
  50% { transform: rotateX(90deg); }
  100% { transform: rotateX(0deg); }
}

/* Pulsanti Azione */
.actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 8px 0;
}

.danger-btn, .secondary-btn, .paypal-btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.danger-btn { background-color: #dc2626; color: white; }
.danger-btn:hover { background-color: #b91c1c; }

.secondary-btn { background-color: #2563eb; color: white; }
.secondary-btn:hover { background-color: #1d4ed8; }

.paypal-btn { 
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: #0070ba; 
  color: white; 
  text-decoration: none; 
  margin-top: 16px; 
  padding: 12px 24px; 
  border-radius: 8px;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(0, 112, 186, 0.3);
}

.paypal-btn:hover { background-color: #005ea6; }

.hidden { display: none !important; }

.message-container {
  text-align: center;
  font-weight: 700;
  font-size: 0.95rem;
  min-height: 24px;
  margin: 6px 0;
  color: #fde047;
}

/* Tastiera Virtuale */
.keyboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}

.keyboard-row {
  display: flex;
  justify-content: center;
  gap: 5px;
}

.key {
  background-color: var(--key-bg);
  color: white;
  border: none;
  border-radius: 6px;
  padding: 14px 0;
  flex: 1;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  text-align: center;
  user-select: none;
  transition: background-color 0.2s, transform 0.05s;
}

.key:active { transform: scale(0.96); }
.key.large { flex: 1.5; font-size: 0.75rem; }
.key.space-key { flex: 4; font-size: 0.8rem; letter-spacing: 1px; }

.key.correct { background-color: var(--correct) !important; }
.key.present { background-color: var(--present) !important; }
.key.absent { background-color: var(--absent) !important; opacity: 0.5; }

/* Modal Modali */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal.show { display: flex; }

.modal-content {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 24px;
  border-radius: 12px;
  max-width: 420px;
  width: 90%;
  position: relative;
  line-height: 1.6;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
  margin-bottom: 12px;
  font-size: 1.25rem;
  color: #f8fafc;
}

.modal-content ul {
  padding-left: 20px;
  font-size: 0.9rem;
  color: #cbd5e1;
}

.modal-content li { margin-bottom: 8px; }

.close-btn {
  position: absolute;
  top: 12px; right: 16px;
  font-size: 1.6rem;
  color: var(--text-muted);
  cursor: pointer;
}

.close-btn:hover { color: white; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  text-align: center;
  margin-top: 16px;
}

.stat-box {
  background-color: var(--board-bg);
  padding: 10px 4px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.stat-box div { font-size: 1.4rem; font-weight: 800; color: #3b82f6; }
.stat-box span { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; }

.coffee-text {
  font-size: 0.95rem;
  color: #cbd5e1;
}

.badge {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
}
.badge.green { background-color: var(--correct); }
.badge.yellow { background-color: var(--present); color: black; }
.badge.gray { background-color: var(--absent); }