* {
  margin: 0;
  padding: 0;
}

body {
  background-color: #f1f2f3;
}

.container {
  box-sizing: border-box;
  width: 100%;
  max-width: 1640px;
  min-width: 1240px;
  margin: 25px auto;
  color: #333;
}

.container * {
  box-sizing: border-box;
}

header {
  position: relative;
  margin-bottom: 20px;
  text-align: center;
}

header h1 {
  font-size: 32px;
  margin-bottom: 5px;
}

header p {
  font-size: 16px;
  line-height: 1.6;
}

.calculator-container {
  display: flex;
  gap: 20px;
  margin-bottom: 25px;
}

.input-section,
.result-section {
  flex: 1;
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #2575fc;
  color: #2575fc;
}

.input-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  color: #555;
}

input[type="number"],
select {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

input[type="number"]:focus,
select:focus {
  border-color: #2575fc;
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 117, 252, 0.2);
}

.buttons {
  display: flex;
  gap: 15px;
  margin-top: 25px;
  flex-wrap: wrap;
}

button {
  padding: 12px 36px;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.calculate-btn {
  background-color: #4CAF50;
  color: white;
}

.example-btn {
  background-color: #2196F3;
  color: white;
}

.copy-btn {
  background-color: #FF9800;
  color: white;
}

.clear-btn {
  background-color: #f44336;
  color: white;
}

button:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.result-content {
  text-align: center;
  padding: 20px 0;
}

.bac-value {
  font-size: 3.5rem;
  font-weight: bold;
  color: #2575fc;
  margin: 25px 0;
}

.bac-status {
  font-size: 1.5rem;
  margin-bottom: 25px;
  padding: 15px;
  border-radius: 8px;
}

.safe {
  background-color: #E8F5E9;
  color: #2E7D32;
}

.warning {
  background-color: #FFF8E1;
  color: #F57C00;
}

.danger {
  background-color: #FFEBEE;
  color: #D32F2F;
}

.legal-info {
  background-color: #E3F2FD;
  padding: 15px;
  border-radius: 8px;
  font-size: 0.9rem;
}

.legal-info p{
  margin: 10px 0;
}

.info-section {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  margin-bottom: 30px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.info-card {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 8px;
  border-left: 4px solid #2575fc;
}

.info-card h3 {
  margin-bottom: 10px;
  color: #2575fc;
}

.info-card p{
  margin-top: 15px;
}

footer {
  text-align: center;
  color: #666;
  font-size: 0.9rem;
}

.notice {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 15px 25px;
  background-color: #333;
  color: white;
  border-radius: 5px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s;
}

.notice.show {
  opacity: 1;
}