body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #232946;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  margin: 0;
}

.container {
  background: #121629;
  padding: 2rem 2.5rem;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  margin-top: 40px;
}

h1 {
  letter-spacing: 2px;
  text-align: center;
}

#timer {
  text-align: center;
  font-size: 1.2rem;
  margin: 1rem 0;
}

#grid {
  display: grid;
  grid-template-columns: repeat(5, 48px);
  grid-gap: 8px;
  justify-content: center;
  margin: 20px 0;
}

.cell {
  width: 48px;
  height: 48px;
  background: #eebbc3;
  color: #232946;
  font-weight: bold;
  font-size: 1.2rem;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  outline: none;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cell:active {
  background: #ffadad;
}

.cell.clicked {
  background: #232946;
  color: #eebbc3;
  cursor: default;
}

#startBtn {
  padding: 0.6rem 1.4rem;
  font-size: 1.1rem;
  border: none;
  background: #eebbc3;
  color: #232946;
  border-radius: 6px;
  margin-bottom: 16px;
  cursor: pointer;
  transition: background 0.2s;
}

#startBtn:active {
  background: #ffadad;
}

#result {
  margin-top: 16px;
  text-align: center;
  font-size: 1.15rem;
  min-height: 2em;
}