.om-stage {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.om-otp-display {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  font-family: monospace;
  background: var(--bg-card);
  padding: 20px 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text-color);
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.om-message {
  font-size: 1.2rem;
  color: var(--text-color);
  text-align: center;
  margin-top: 10px;
  min-height: 1.5em;
}

.om-keyboard {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 5px;
  margin-top: 10px;
  width: 100%;
  max-width: 400px;
}

.om-key {
  background: var(--bg-card);
  border: none;
  border-radius: 5px;
  padding: 10px 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-color);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: all 0.2s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.om-key:active {
  transform: scale(0.95);
  background: var(--border);
}

.om-key.del { grid-column: span 2; background: #e74c3c; color: #fff; }
.om-key.ok { grid-column: span 3; background: var(--accent); color: #fff; }
.om-key.wide { grid-column: span 2; }
.om-key.space { grid-column: span 3; }

.om-keyboard.alphanumeric {
  grid-template-columns: repeat(10, 1fr);
  gap: 4px;
}
.om-keyboard.alphanumeric .om-key {
  font-size: 1.1rem;
  padding: 12px 0;
}