body {
  font-family: Arial, sans-serif;
  background-color: #f0f0f0;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  text-align: center;
  color: #333;
  margin-bottom: 30px;
}

.content-wrapper {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

/* Kalkulator Tradisional */
.calculator-container {
  background-color: #333;
  border-radius: 10px;
  padding: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  width: 300px;
}

.calculator-display {
  background-color: #e6e6e6;
  border-radius: 5px;
  padding: 10px;
  margin-bottom: 15px;
  font-family: "Courier New", monospace;
  position: relative;
  min-height: 60px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.2);
}

.calculator-expression {
  font-size: 30px;
  color: #666;
  font-weight: bold;
  /* min-height: 20px; */
  text-align: right;
  margin-bottom: 5px;
}

.calculator-result {
  font-size: 30px;
  font-weight: bold;
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.calculator-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr); /* Membuat 4 kolom yang sama lebar */
  gap: 8px; /* Jarak antar tombol */
}

.calculator-button {
  background-color: #555;
  color: white;
  border: none;
  border-radius: 5px;
  padding: 15px 0;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 3px 0 #333;
}

.calculator-button:active {
  box-shadow: 0 1px 0 #333;
  transform: translateY(2px);
}

.calculator-button:hover {
  background-color: #666;
}

.number-button {
  background-color: #777;
}

.operator-button {
  background-color: #ff9500;
  color: white;
}

.operator-button:hover {
  background-color: #ffaa33;
}

.function-button {
  background-color: #aaa;
  color: #333;
}

.function-button:hover {
  background-color: #ccc;
}

.equal-button {
  background-color: #2196f3;
}

.equal-button:hover {
  background-color: #0d8bf2;
}

.zero-button {
  grid-column: span 1; /* Membuat tombol "0" menempati 2 kolom */
}

#hidden-form {
  display: none;
}

/* Riwayat Perhitungan */
.history-container {
  background-color: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  flex: 1;
  min-width: 300px;
}

.history-container h2 {
  color: #333;
  margin-top: 0;
  border-bottom: 2px solid #eee;
  padding-bottom: 10px;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

.history-table th,
.history-table td {
  padding: 10px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.history-table th {
  background-color: #f7f7f7;
  font-weight: bold;
}

.history-table tr:hover {
  background-color: #f9f9f9;
}

.delete-btn {
  background-color: #f44336;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background-color 0.3s;
  margin-top: 15px;
}

.delete-btn:hover {
  background-color: #d32f2f;
}

.message {
  background-color: #fff3cd;
  color: #856404;
  padding: 10px;
  border-radius: 5px;
  margin-bottom: 20px;
  text-align: center;
}

@media (max-width: 768px) {
  .content-wrapper {
    flex-direction: column;
  }

  .calculator-container,
  .history-container {
    width: 100%;
  }
}

.delete-btn.small-btn {
  padding: 5px 8px;
  font-size: 12px;
  margin-top: 0;
}