.calculator {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border: 1px solid #e6eef6;
    border-radius: 12px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    box-shadow: 0 10px 24px rgba(16, 42, 67, 0.12);
}

.calculator__form {
    display: grid;
    gap: 1rem;
}

.calculator__controls {
    display: grid;
    gap: 0.75rem;
}

.calculator__controls label {
    font-family: Roboto, Arial, sans-serif;
    font-size: 0.95rem;
    color: var(--muted);
}

.calculator__controls input,
.calculator__controls select {
    padding: 0.5rem 0.75rem;
    border-radius: 10px;
    border: 1px solid #d7e2ed;
    font-size: 1rem;
    background: #ffffff;
    color: var(--text);
}

.calculator__controls input:focus,
.calculator__controls select:focus {
    outline: 2px solid rgba(11, 105, 255, 0.4);
}

.calculator__submit {
    justify-self: start;
    padding: 0.55rem 1.2rem;
    border-radius: 10px;
    border: 1px solid rgba(11, 105, 255, 0.8);
    background: var(--accent);
    color: #ffffff;
    font-family: Roboto, Arial, sans-serif;
    font-size: 1rem;
    cursor: pointer;
}

.calculator__submit:hover {
    filter: brightness(1.05);
}

.calculator__result {
    margin-top: 1rem;
    padding: 0.9rem 1rem;
    border-radius: 10px;
    border: 1px solid rgba(11, 105, 255, 0.15);
    background: rgba(11, 105, 255, 0.05);
}

.calculator__result strong {
    font-family: Roboto, Arial, sans-serif;
}