:root {
    --primary-color: #4a90e2;
    --bg-color: #f8f9fa;
    --text-color: #333;
    --card-bg: #ffffff;
}

.justify-text {
    text-align: justify;
}

.center-text {
    text-align: center;
}

.aviso-retangulo {
  width: 60%;               
  max-width: 600px;        
  background-color: #fff3cd; 
  color: #856404;          
  text-align: center;
  border: 2px solid #ffeeba;
  padding: 15px;            
  border-radius: 8px;       
  margin: 20px auto;        
  font-family: sans-serif;
}

.copy-container {
    max-width: 350px;
    margin: 20px auto;
    font-family: 'Segoe UI', sans-serif;
}

.copy-label {
    display: block;
    font-size: 17px;
    color: #777;
    margin-bottom: 8px;
    text-align: left;
}

.copy-wrapper {
    display: flex;
    background: #fff;
    border: 2px solid #eee;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.copy-wrapper:focus-within {
    border-color: #4a90e2;
    box-shadow: 0 0 8px rgba(74, 144, 226, 0.2);
}

.copy-input {
    flex: 1;
    border: none;
    padding: 12px 15px;
    font-size: 14px;
    min-width: 84px;
    color: #2E9E71;
    outline: none;
    background: transparent;
}

.copy-btn {
    background: #f8f9fa;
    border: none;
    border-left: 1px solid #eee;
    padding: 0 15px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    font-size: 0.85rem;
    font-weight: bold;
    color: #4a90e2;
}

.copy-btn:hover {
    background: #edf2f7;
}

.copy-btn.success {
    background: #2ecc71;
    color: white;
}

.calc-container {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 350px;
    margin: 20px auto;
    padding: 25px;
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
    color: var(--text-color);
}

.calc-header h2 {
    margin: 0 0 10px 0;
    font-size: 1.4rem;
    color: var(--primary-color);
}

.calc-header p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 20px;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

input[type="number"] {
    width: 80%;
    padding: 12px;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 1.1rem;
    text-align: center;
    transition: border-color 0.3s;
    outline: none;
}

input[type="number"]:focus {
    border-color: var(--primary-color);
}

.result-box {
    background: var(--bg-color);
    padding: 15px;
    border-radius: 10px;
    margin-top: 10px;
}

.result-label {
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #888;
}

.result-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: #2ecc71;
    display: block;
    margin-top: 5px;
}

.warning {
    color: #e74c3c;
    font-size: 1rem;
    margin-top: 10px;
    min-height: 1.2em;
}

@media (max-width: 400px) {
    .calc-container {
        width: 90%;
        margin: 10px auto;
    }
}