/* Prefixing everything with .sd-calc-wrapper to avoid WordPress conflicts */
.sd-calc-wrapper {
    padding: 20px 0;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: #333;
}

.sd-container {
    max-width: 600px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    padding: 30px;
    border-top: 6px solid #2ecc71; /* Green Theme */
}

.sd-title {
    text-align: center;
    color: #2c3e50; /* Grey Theme */
    margin-bottom: 25px;
    font-size: 24px;
}

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

.sd-input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #34495e;
}

.sd-input-group textarea {
    width: 100%;
    height: 100px;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    padding: 12px;
    font-size: 16px;
    resize: none;
    box-sizing: border-box;
    transition: border 0.3s;
}

.sd-input-group textarea:focus {
    border-color: #2ecc71;
    outline: none;
}

.sd-controls {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    margin-bottom: 25px;
}

.sd-select-box {
    flex: 1;
}

.sd-select-box select {
    width: 100%;
    padding: 10px;
    border-radius: 6px;
    border: 2px solid #ecf0f1;
    background: white;
}

#sdCalculateBtn {
    background: #2ecc71;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

#sdCalculateBtn:hover {
    background: #27ae60;
}

.sd-result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.sd-card {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #2ecc71;
    text-align: center;
}

.sd-card-label {
    display: block;
    font-size: 12px;
    color: #7f8c8d;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.sd-card-value {
    font-size: 18px;
    font-weight: bold;
    color: #2c3e50;
}

.sd-steps-box {
    margin-top: 25px;
    background: #fdfdfd;
    border: 1px dashed #2ecc71;
    padding: 15px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.6;
}

.sd-reset {
    width: 100%;
    background: transparent;
    border: 1px solid #bdc3c7;
    color: #7f8c8d;
    margin-top: 20px;
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
}

.sd-reset:hover {
    background: #f2f2f2;
}

@media (max-width: 480px) {
    .sd-controls { flex-direction: column; align-items: stretch; }
    .sd-result-grid { grid-template-columns: 1fr; }
}

.sd-formula-container {
    max-width: 650px;
    margin: 20px auto;
    background-color: #34495e; /* Professional Dark Grey */
    border-radius: 12px;
    padding: 25px;
    color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    border-bottom: 5px solid #2ecc71; /* Emerald Green Accent */
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.sd-formula-title {
    color: #2ecc71;
    text-align: center;
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sd-formula-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.sd-formula-card {
    background: rgba(0, 0, 0, 0.2);
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #2ecc71;
}

.formula-name {
    margin: 0 0 8px 0;
    font-size: 14px;
    color: #bdc3c7;
    font-weight: 600;
}

.formula-display {
    font-family: 'Courier New', Courier, monospace;
    font-size: 18px;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
    padding: 8px;
    border-radius: 4px;
    text-align: center;
}

.sd-formula-legend {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 10px;
}

.sd-formula-legend p {
    margin: 0;
    font-size: 12px;
    color: #ecf0f1;
}

.sd-formula-legend strong {
    color: #2ecc71;
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .sd-formula-legend {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}