/* Units Interface Styles */

.input-with-units {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.input-with-units input {
    flex: 1;
    min-width: 0;
}

.unit-selector {
    background: white;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    padding: 12px 8px;
    font-size: 14px;
    font-family: 'Inter', sans-serif;
    color: #495057;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
    max-width: 160px;
    flex-shrink: 0;
}

.unit-selector:hover {
    border-color: #3498db;
}

.unit-selector:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.unit-info {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #6c757d;
    margin-top: 4px;
}

.unit-info .conversion-icon {
    font-size: 10px;
    opacity: 0.7;
}

.units-panel {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
}

.units-panel h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 8px;
}

.units-toggle {
    background: none;
    border: none;
    color: #3498db;
    cursor: pointer;
    font-size: 14px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.units-toggle:hover {
    background: rgba(52, 152, 219, 0.1);
}

.units-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.unit-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.unit-group label {
    font-size: 13px;
    font-weight: 500;
    color: #6c757d;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .input-with-units {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }
    
    .unit-selector {
        min-width: 100%;
        max-width: 100%;
    }
    
    .units-grid {
        grid-template-columns: 1fr;
    }
}

/* Unit conversion feedback */
.conversion-feedback {
    background: #e3f2fd;
    border: 1px solid #2196f3;
    border-radius: 4px;
    padding: 8px 12px;
    margin-top: 8px;
    font-size: 12px;
    color: #1976d2;
    display: none;
}

.conversion-feedback.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced input styling when units are enabled */
.input-item.with-units {
    position: relative;
}

.input-item.with-units .input-with-units input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: 0;
}

.input-item.with-units .unit-selector {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    border-left: 0;
}

/* Results with units */
.result-value.with-units {
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-unit {
    font-size: 0.9em;
    color: #6c757d;
    font-weight: normal;
}

/* Unit display elements */
.unit-display {
    background: #f8f9fa;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    padding: 12px 16px;
    font-size: 14px;
    font-family: 'Inter', sans-serif;
    color: #6c757d;
    font-weight: 500;
    min-width: 60px;
    text-align: center;
    flex-shrink: 0;
}

.input-item.with-units .input-with-units input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: 0;
}

.input-item.with-units .unit-display {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    border-left: 0;
    margin-left: -2px;
}

/* Unit validation states */
.unit-selector.error {
    border-color: #dc3545;
    background-color: #fff5f5;
}

.unit-selector.warning {
    border-color: #ffc107;
    background-color: #fffbf0;
}

.unit-selector.success {
    border-color: #28a745;
    background-color: #f0fff4;
}